From 971b14e5c2839a97154f879272b76ea8bb4c2280 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 20:56:22 +0200 Subject: [PATCH 01/20] feat(import/export): use ES and cleanup --- .gitignore | 1 + index.js | 4 +- lib/r820t.js | 637 +++++----- lib/rtl2832u.js | 403 ++++--- lib/rtlcom.js | 739 ++++++------ lib/rtlsdr.js | 79 +- lib/web-usb.js | 14 +- package-lock.json | 2916 +++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 3848 insertions(+), 945 deletions(-) create mode 100644 package-lock.json diff --git a/.gitignore b/.gitignore index ad46b30..235d321 100644 --- a/.gitignore +++ b/.gitignore @@ -59,3 +59,4 @@ typings/ # next.js build output .next +/.idea/ diff --git a/index.js b/index.js index 12dc140..20c1a72 100644 --- a/index.js +++ b/index.js @@ -1 +1,3 @@ -module.exports = require('./lib/rtlsdr'); +import {RtlSdr} from './lib/rtlsdr' + +export {RtlSdr}; diff --git a/lib/r820t.js b/lib/r820t.js index ae03dc8..d8a46b2 100644 --- a/lib/r820t.js +++ b/lib/r820t.js @@ -12,9 +12,9 @@ // See the License for the specific language governing permissions and // limitations under the License. -var RtlCom = require('./rtlcom'); +import {RtlCom} from './rtlcom'; -var CMD = RtlCom.CMD; +const CMD = RtlCom.CMD; /** * Operations on the R820T tuner chip. @@ -22,349 +22,348 @@ var CMD = RtlCom.CMD; * @param {number} xtalFreq The frequency of the oscillator crystal. * @constructor */ -function R820T(com, xtalFreq) { +export function R820T(com, xtalFreq) { - /** - * Initial values for registers 0x05-0x1f. - */ - var REGISTERS = [0x83, 0x32, 0x75, 0xc0, 0x40, 0xd6, 0x6c, 0xf5, 0x63, 0x75, - 0x68, 0x6c, 0x83, 0x80, 0x00, 0x0f, 0x00, 0xc0, 0x30, 0x48, - 0xcc, 0x60, 0x00, 0x54, 0xae, 0x4a, 0xc0]; + /** + * Initial values for registers 0x05-0x1f. + */ + const REGISTERS = [0x83, 0x32, 0x75, 0xc0, 0x40, 0xd6, 0x6c, 0xf5, 0x63, 0x75, + 0x68, 0x6c, 0x83, 0x80, 0x00, 0x0f, 0x00, 0xc0, 0x30, 0x48, + 0xcc, 0x60, 0x00, 0x54, 0xae, 0x4a, 0xc0]; - /** - * Configurations for the multiplexer in different frequency bands. - */ - var MUX_CFGS = [ - [0, 0x08, 0x02, 0xdf], - [50, 0x08, 0x02, 0xbe], - [55, 0x08, 0x02, 0x8b], - [60, 0x08, 0x02, 0x7b], - [65, 0x08, 0x02, 0x69], - [70, 0x08, 0x02, 0x58], - [75, 0x00, 0x02, 0x44], - [90, 0x00, 0x02, 0x34], - [110, 0x00, 0x02, 0x24], - [140, 0x00, 0x02, 0x14], - [180, 0x00, 0x02, 0x13], - [250, 0x00, 0x02, 0x11], - [280, 0x00, 0x02, 0x00], - [310, 0x00, 0x41, 0x00], - [588, 0x00, 0x40, 0x00] - ]; + /** + * Configurations for the multiplexer in different frequency bands. + */ + const MUX_CFGS = [ + [0, 0x08, 0x02, 0xdf], + [50, 0x08, 0x02, 0xbe], + [55, 0x08, 0x02, 0x8b], + [60, 0x08, 0x02, 0x7b], + [65, 0x08, 0x02, 0x69], + [70, 0x08, 0x02, 0x58], + [75, 0x00, 0x02, 0x44], + [90, 0x00, 0x02, 0x34], + [110, 0x00, 0x02, 0x24], + [140, 0x00, 0x02, 0x14], + [180, 0x00, 0x02, 0x13], + [250, 0x00, 0x02, 0x11], + [280, 0x00, 0x02, 0x00], + [310, 0x00, 0x41, 0x00], + [588, 0x00, 0x40, 0x00] + ]; - /** - * A bit mask to reverse the bits in a byte. - */ - var BIT_REVS = [0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6, 0xe, - 0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf]; + /** + * A bit mask to reverse the bits in a byte. + */ + const BIT_REVS = [0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6, 0xe, + 0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf]; - /** - * Whether the PLL in the tuner is locked. - */ - var hasPllLock = false; + /** + * Whether the PLL in the tuner is locked. + */ + let hasPllLock = false; - /** - * Shadow registers 0x05-0x1f, for setting values using masks. - */ - var shadowRegs; + /** + * Shadow registers 0x05-0x1f, for setting values using masks. + */ + let shadowRegs; - /** - * Initializes the tuner. - */ - async function init() { - await initRegisters(REGISTERS); - await initElectronics(); - } - - /** - * Sets the tuner's frequency. - * @param {number} freq The frequency to tune to. - * @return {number} The actual tuned frequency. - */ - async function setFrequency(freq) { - await setMux(freq); - return await setPll(freq); - } - - /** - * Stops the tuner. - */ - async function close() { - await writeEach([ - [0x06, 0xb1, 0xff], - [0x05, 0xb3, 0xff], - [0x07, 0x3a, 0xff], - [0x08, 0x40, 0xff], - [0x09, 0xc0, 0xff], - [0x0a, 0x36, 0xff], - [0x0c, 0x35, 0xff], - [0x0f, 0x68, 0xff], - [0x11, 0x03, 0xff], - [0x17, 0xf4, 0xff], - [0x19, 0x0c, 0xff] - ]); - } - - /** - * Initializes all the components of the tuner. - */ - async function initElectronics() { - await writeEach([ - [0x0c, 0x00, 0x0f], - [0x13, 49, 0x3f], - [0x1d, 0x00, 0x38] - ]); - var filterCap = await calibrateFilter(true); - await writeEach([ - [0x0a, 0x10 | filterCap, 0x1f], - [0x0b, 0x6b, 0xef], - [0x07, 0x00, 0x80], - [0x06, 0x10, 0x30], - [0x1e, 0x40, 0x60], - [0x05, 0x00, 0x80], - [0x1f, 0x00, 0x80], - [0x0f, 0x00, 0x80], - [0x19, 0x60, 0x60], - [0x1d, 0xe5, 0xc7], - [0x1c, 0x24, 0xf8], - [0x0d, 0x53, 0xff], - [0x0e, 0x75, 0xff], - [0x05, 0x00, 0x60], - [0x06, 0x00, 0x08], - [0x11, 0x38, 0x08], - [0x17, 0x30, 0x30], - [0x0a, 0x40, 0x60], - [0x1d, 0x00, 0x38], - [0x1c, 0x00, 0x04], - [0x06, 0x00, 0x40], - [0x1a, 0x30, 0x30], - [0x1d, 0x18, 0x38], - [0x1c, 0x24, 0x04], - [0x1e, 0x0d, 0x1f], - [0x1a, 0x20, 0x30] - ]); - } - - /** - * Sets the tuner to automatic gain. - */ - async function setAutoGain() { - await writeEach([ - [0x05, 0x00, 0x10], - [0x07, 0x10, 0x10], - [0x0c, 0x0b, 0x9f] - ]); - } - - /** - * Sets the tuner's manual gain. - * @param {number} gain The tuner's gain, in dB. - */ - async function setManualGain(gain) { - var step = 0; - if (gain <= 15) { - step = Math.round(1.36 + gain * (1.1118 + gain * (-0.0786 + gain * 0.0027))); - } else { - step = Math.round(1.2068 + gain * (0.6875 + gain * (-0.01011 + gain * 0.0001587))); + /** + * Initializes the tuner. + */ + async function init() { + await initRegisters(REGISTERS); + await initElectronics(); } - if (step < 0) { - step = 0; - } else if (step > 30) { - step = 30; + + /** + * Sets the tuner's frequency. + * @param {number} freq The frequency to tune to. + * @return {number} The actual tuned frequency. + */ + async function setFrequency(freq) { + await setMux(freq); + return setPll(freq); } - var lnaValue = Math.floor(step / 2); - var mixerValue = Math.floor((step - 1) / 2); - await writeEach([ - [0x05, 0x10, 0x10], - [0x07, 0x00, 0x10], - [0x0c, 0x08, 0x9f], - [0x05, lnaValue, 0x0f], - [0x07, mixerValue, 0x0f] - ]); - } - /** - * Calibrates the filters. - * @param {boolean} firstTry Whether this is the first try to calibrate. - */ - async function calibrateFilter(firstTry) { - await writeEach([ - [0x0b, 0x6b, 0x60], - [0x0f, 0x04, 0x04], - [0x10, 0x00, 0x03] - ]); - await setPll(56000000); - if (!hasPllLock) { - throw new Error("PLL not locked -- cannot tune to the selected frequency."); - return; + /** + * Stops the tuner. + */ + async function close() { + await writeEach([ + [0x06, 0xb1, 0xff], + [0x05, 0xb3, 0xff], + [0x07, 0x3a, 0xff], + [0x08, 0x40, 0xff], + [0x09, 0xc0, 0xff], + [0x0a, 0x36, 0xff], + [0x0c, 0x35, 0xff], + [0x0f, 0x68, 0xff], + [0x11, 0x03, 0xff], + [0x17, 0xf4, 0xff], + [0x19, 0x0c, 0xff] + ]); } - await writeEach([ - [0x0b, 0x10, 0x10], - [0x0b, 0x00, 0x10], - [0x0f, 0x00, 0x04] - ]); - var data = await readRegBuffer(0x00, 5); - var arr = new Uint8Array(data); - var filterCap = arr[4] & 0x0f; - if (filterCap == 0x0f) { - filterCap = 0; + + /** + * Initializes all the components of the tuner. + */ + async function initElectronics() { + await writeEach([ + [0x0c, 0x00, 0x0f], + [0x13, 49, 0x3f], + [0x1d, 0x00, 0x38] + ]); + const filterCap = await calibrateFilter(true); + await writeEach([ + [0x0a, 0x10 | filterCap, 0x1f], + [0x0b, 0x6b, 0xef], + [0x07, 0x00, 0x80], + [0x06, 0x10, 0x30], + [0x1e, 0x40, 0x60], + [0x05, 0x00, 0x80], + [0x1f, 0x00, 0x80], + [0x0f, 0x00, 0x80], + [0x19, 0x60, 0x60], + [0x1d, 0xe5, 0xc7], + [0x1c, 0x24, 0xf8], + [0x0d, 0x53, 0xff], + [0x0e, 0x75, 0xff], + [0x05, 0x00, 0x60], + [0x06, 0x00, 0x08], + [0x11, 0x38, 0x08], + [0x17, 0x30, 0x30], + [0x0a, 0x40, 0x60], + [0x1d, 0x00, 0x38], + [0x1c, 0x00, 0x04], + [0x06, 0x00, 0x40], + [0x1a, 0x30, 0x30], + [0x1d, 0x18, 0x38], + [0x1c, 0x24, 0x04], + [0x1e, 0x0d, 0x1f], + [0x1a, 0x20, 0x30] + ]); } - if (filterCap != 0 && firstTry) { - return await calibrateFilter(false); - } else { - return (filterCap); + + /** + * Sets the tuner to automatic gain. + */ + async function setAutoGain() { + await writeEach([ + [0x05, 0x00, 0x10], + [0x07, 0x10, 0x10], + [0x0c, 0x0b, 0x9f] + ]); } - } - /** - * Sets the multiplexer's frequency. - * @param {number} freq The frequency to set. - */ - async function setMux(freq) { - var freqMhz = freq / 1000000; - for (var i = 0; i < MUX_CFGS.length - 1; ++i) { - if (freqMhz < MUX_CFGS[i + 1][0]) { - break; - } + /** + * Sets the tuner's manual gain. + * @param {number} gain The tuner's gain, in dB. + */ + async function setManualGain(gain) { + let step; + if (gain <= 15) { + step = Math.round(1.36 + gain * (1.1118 + gain * (-0.0786 + gain * 0.0027))); + } else { + step = Math.round(1.2068 + gain * (0.6875 + gain * (-0.01011 + gain * 0.0001587))); + } + if (step < 0) { + step = 0; + } else if (step > 30) { + step = 30; + } + const lnaValue = Math.floor(step / 2); + const mixerValue = Math.floor((step - 1) / 2); + await writeEach([ + [0x05, 0x10, 0x10], + [0x07, 0x00, 0x10], + [0x0c, 0x08, 0x9f], + [0x05, lnaValue, 0x0f], + [0x07, mixerValue, 0x0f] + ]); } - var cfg = MUX_CFGS[i]; - await writeEach([ - [0x17, cfg[1], 0x08], - [0x1a, cfg[2], 0xc3], - [0x1b, cfg[3], 0xff], - [0x10, 0x00, 0x0b], - [0x08, 0x00, 0x3f], - [0x09, 0x00, 0x3f] - ]); - } - /** - * Sets the PLL's frequency. - * @param {number} freq The frequency to set. - */ - async function setPll(freq) { - var pllRef = Math.floor(xtalFreq); - await writeEach([ - [0x10, 0x00, 0x10], - [0x1a, 0x00, 0x0c], - [0x12, 0x80, 0xe0] - ]); - var divNum = Math.min(6, Math.floor(Math.log(1770000000 / freq) / Math.LN2)); - var mixDiv = 1 << (divNum + 1); - var data = await readRegBuffer(0x00, 5); - var arr = new Uint8Array(data); - var vcoFineTune = (arr[4] & 0x30) >> 4; - if (vcoFineTune > 2) { - --divNum; - } else if (vcoFineTune < 2) { - ++divNum; + /** + * Calibrates the filters. + * @param {boolean} firstTry Whether this is the first try to calibrate. + */ + async function calibrateFilter(firstTry) { + await writeEach([ + [0x0b, 0x6b, 0x60], + [0x0f, 0x04, 0x04], + [0x10, 0x00, 0x03] + ]); + await setPll(56000000); + if (!hasPllLock) { + throw new Error("PLL not locked -- cannot tune to the selected frequency."); + } + await writeEach([ + [0x0b, 0x10, 0x10], + [0x0b, 0x00, 0x10], + [0x0f, 0x00, 0x04] + ]); + const data = await readRegBuffer(0x00, 5); + const arr = new Uint8Array(data); + let filterCap = arr[4] & 0x0f; + if (filterCap === 0x0f) { + filterCap = 0; + } + if (filterCap !== 0 && firstTry) { + return calibrateFilter(false); + } else { + return (filterCap); + } } - await writeRegMask(0x10, divNum << 5, 0xe0); - var vcoFreq = freq * mixDiv; - var nint = Math.floor(vcoFreq / (2 * pllRef)); - var vcoFra = vcoFreq % (2 * pllRef); - if (nint > 63) { - hasPllLock = false; - return; + + /** + * Sets the multiplexer's frequency. + * @param {number} freq The frequency to set. + */ + async function setMux(freq) { + const freqMhz = freq / 1000000; + let i = 0; + for (; i < MUX_CFGS.length - 1; ++i) { + if (freqMhz < MUX_CFGS[i + 1][0]) { + break; + } + } + const cfg = MUX_CFGS[i]; + await writeEach([ + [0x17, cfg[1], 0x08], + [0x1a, cfg[2], 0xc3], + [0x1b, cfg[3], 0xff], + [0x10, 0x00, 0x0b], + [0x08, 0x00, 0x3f], + [0x09, 0x00, 0x3f] + ]); } - var ni = Math.floor((nint - 13) / 4); - var si = (nint - 13) % 4; - await writeEach([ - [0x14, ni + (si << 6), 0xff], - [0x12, vcoFra == 0 ? 0x08 : 0x00, 0x08] - ]); - var sdm = Math.min(65535, Math.floor(32768 * vcoFra / pllRef)); - await writeEach([ - [0x16, sdm >> 8, 0xff], - [0x15, sdm & 0xff, 0xff] - ]); - await getPllLock(true); - await writeRegMask(0x1a, 0x08, 0x08); - var actualFreq = 2 * pllRef * (nint + sdm / 65536) / mixDiv; - return (actualFreq); - } - /** - * Checks whether the PLL has achieved lock. - * @param {boolean} firstTry Whether this is the first try to achieve lock. - */ - async function getPllLock(firstTry) { - var data = await readRegBuffer(0x00, 3); - var arr = new Uint8Array(data); - if (arr[2] & 0x40) { - hasPllLock = true; - return; + /** + * Sets the PLL's frequency. + * @param {number} freq The frequency to set. + */ + async function setPll(freq) { + const pllRef = Math.floor(xtalFreq); + await writeEach([ + [0x10, 0x00, 0x10], + [0x1a, 0x00, 0x0c], + [0x12, 0x80, 0xe0] + ]); + let divNum = Math.min(6, Math.floor(Math.log(1770000000 / freq) / Math.LN2)); + const mixDiv = 1 << (divNum + 1); + const data = await readRegBuffer(0x00, 5); + const arr = new Uint8Array(data); + const vcoFineTune = (arr[4] & 0x30) >> 4; + if (vcoFineTune > 2) { + --divNum; + } else if (vcoFineTune < 2) { + ++divNum; + } + await writeRegMask(0x10, divNum << 5, 0xe0); + const vcoFreq = freq * mixDiv; + const nint = Math.floor(vcoFreq / (2 * pllRef)); + const vcoFra = vcoFreq % (2 * pllRef); + if (nint > 63) { + hasPllLock = false; + return; + } + const ni = Math.floor((nint - 13) / 4); + const si = (nint - 13) % 4; + await writeEach([ + [0x14, ni + (si << 6), 0xff], + [0x12, vcoFra === 0 ? 0x08 : 0x00, 0x08] + ]); + const sdm = Math.min(65535, Math.floor(32768 * vcoFra / pllRef)); + await writeEach([ + [0x16, sdm >> 8, 0xff], + [0x15, sdm & 0xff, 0xff] + ]); + await getPllLock(true); + await writeRegMask(0x1a, 0x08, 0x08); + const actualFreq = 2 * pllRef * (nint + sdm / 65536) / mixDiv; + return (actualFreq); } - if (firstTry) { - await writeRegMask(0x12, 0x60, 0xe0); - return await getPllLock(false); - } else { - hasPllLock = false; - return; + + /** + * Checks whether the PLL has achieved lock. + * @param {boolean} firstTry Whether this is the first try to achieve lock. + */ + async function getPllLock(firstTry) { + const data = await readRegBuffer(0x00, 3); + const arr = new Uint8Array(data); + if (arr[2] & 0x40) { + hasPllLock = true; + return; + } + if (firstTry) { + await writeRegMask(0x12, 0x60, 0xe0); + return getPllLock(false); + } else { + hasPllLock = false; + } } - } - /** - * Sets the initial values of the 0x05-0x1f registers. - * @param {Array.} regs The values for the registers. - */ - async function initRegisters(regs) { - shadowRegs = new Uint8Array(regs); - var cmds = []; - for (var i = 0; i < regs.length; ++i) { - cmds.push([CMD.I2CREG, 0x34, i + 5, regs[i]]); + /** + * Sets the initial values of the 0x05-0x1f registers. + * @param {Array.} regs The values for the registers. + */ + async function initRegisters(regs) { + shadowRegs = new Uint8Array(regs); + const cmds = []; + for (let i = 0; i < regs.length; ++i) { + cmds.push([CMD.I2CREG, 0x34, i + 5, regs[i]]); + } + await com.writeEach(cmds); } - await com.writeEach(cmds); - } - /** - * Reads a series of registers into a buffer. - * @param {number} addr The first register's address to read. - * @param {number} length The number of registers to read. - * @return {ArrayBuffer} An ArrayBuffer with the data. - */ - async function readRegBuffer(addr, length) { - var data = await com.i2c.readRegBuffer(0x34, addr, length); - var buf = new Uint8Array(data); - for (var i = 0; i < buf.length; ++i) { - var b = buf[i]; - buf[i] = (BIT_REVS[b & 0xf] << 4) | BIT_REVS[b >> 4]; + /** + * Reads a series of registers into a buffer. + * @param {number} addr The first register's address to read. + * @param {number} length The number of registers to read. + * @return {ArrayBuffer} An ArrayBuffer with the data. + */ + async function readRegBuffer(addr, length) { + const data = await com.i2c.readRegBuffer(0x34, addr, length); + const buf = new Uint8Array(data); + for (let i = 0; i < buf.length; ++i) { + const b = buf[i]; + buf[i] = (BIT_REVS[b & 0xf] << 4) | BIT_REVS[b >> 4]; + } + return (buf.buffer); } - return (buf.buffer); - } - /** - * Writes a masked value into a register. - * @param {number} addr The address of the register to write into. - * @param {number} value The value to write. - * @param {number} mask A mask that specifies which bits to write. - */ - async function writeRegMask(addr, value, mask) { - var rc = shadowRegs[addr - 5]; - var val = (rc & ~mask) | (value & mask); - shadowRegs[addr - 5] = val; - await com.i2c.writeRegister(0x34, addr, val); - } + /** + * Writes a masked value into a register. + * @param {number} addr The address of the register to write into. + * @param {number} value The value to write. + * @param {number} mask A mask that specifies which bits to write. + */ + async function writeRegMask(addr, value, mask) { + const rc = shadowRegs[addr - 5]; + const val = (rc & ~mask) | (value & mask); + shadowRegs[addr - 5] = val; + await com.i2c.writeRegister(0x34, addr, val); + } - /** - * Perform the write operations given in the array. - * @param {Array.>} array The operations. - */ - async function writeEach(array) { - for (var index = 0; index < array.length; index++) { - var line = array[index]; - await writeRegMask(line[0], line[1], line[2]); + /** + * Perform the write operations given in the array. + * @param {Array.>} array The operations. + */ + async function writeEach(array) { + for (let i = 0; i < array.length; i++) { + const line = array[i]; + await writeRegMask(line[0], line[1], line[2]); + } } - } - return { - init: init, - setFrequency: setFrequency, - setAutoGain: setAutoGain, - setManualGain: setManualGain, - close: close - }; + return { + init: init, + setFrequency: setFrequency, + setAutoGain: setAutoGain, + setManualGain: setManualGain, + close: close + }; } /** @@ -373,8 +372,6 @@ function R820T(com, xtalFreq) { * @return {boolean} A boolean that tells whether the tuner is present. */ R820T.check = async function (com) { - var data = await com.i2c.readRegister(0x34, 0); - return (data == 0x69); + const data = await com.i2c.readRegister(0x34, 0); + return (data === 0x69); }; - -module.exports = R820T; diff --git a/lib/rtl2832u.js b/lib/rtl2832u.js index a92b3d0..f4dc157 100644 --- a/lib/rtl2832u.js +++ b/lib/rtl2832u.js @@ -13,12 +13,12 @@ // See the License for the specific language governing permissions and // limitations under the License. -var R820T = require('./r820t'); -var RtlCom = require('./rtlcom'); +import {R820T} from './r820t'; +import {RtlCom} from './rtlcom'; -var CMD = RtlCom.CMD; -var BLOCK = RtlCom.BLOCK; -var REG = RtlCom.REG; +const CMD = RtlCom.CMD; +const BLOCK = RtlCom.BLOCK; +const REG = RtlCom.REG; /** * Operations on the RTL2832U demodulator. @@ -27,206 +27,205 @@ var REG = RtlCom.REG; * @param {number=} opt_gain The optional gain in dB. If unspecified or null, sets auto gain. * @constructor */ -function RTL2832U(conn, ppm, opt_gain) { - - /** - * Frequency of the oscillator crystal. - */ - var XTAL_FREQ = 28800000; - - /** - * Tuner intermediate frequency. - */ - var IF_FREQ = 3570000; - - /** - * The number of bytes for each sample. - */ - var BYTES_PER_SAMPLE = 2; - - /** - * Communications with the demodulator via USB. - */ - var com = new RtlCom(conn); - - /** - * The tuner used by the dongle. - */ - var tuner; - - /** - * Initialize the demodulator. - */ - async function open() { - await com.writeEach([ - [CMD.REG, BLOCK.USB, REG.SYSCTL, 0x09, 1], - [CMD.REG, BLOCK.USB, REG.EPA_MAXPKT, 0x0200, 2], - [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0210, 2] - ]); - await com.iface.claim(); - await com.writeEach([ - [CMD.REG, BLOCK.SYS, REG.DEMOD_CTL_1, 0x22, 1], - [CMD.REG, BLOCK.SYS, REG.DEMOD_CTL, 0xe8, 1], - [CMD.DEMODREG, 1, 0x01, 0x14, 1], - [CMD.DEMODREG, 1, 0x01, 0x10, 1], - [CMD.DEMODREG, 1, 0x15, 0x00, 1], - [CMD.DEMODREG, 1, 0x16, 0x0000, 2], - [CMD.DEMODREG, 1, 0x16, 0x00, 1], - [CMD.DEMODREG, 1, 0x17, 0x00, 1], - [CMD.DEMODREG, 1, 0x18, 0x00, 1], - [CMD.DEMODREG, 1, 0x19, 0x00, 1], - [CMD.DEMODREG, 1, 0x1a, 0x00, 1], - [CMD.DEMODREG, 1, 0x1b, 0x00, 1], - [CMD.DEMODREG, 1, 0x1c, 0xca, 1], - [CMD.DEMODREG, 1, 0x1d, 0xdc, 1], - [CMD.DEMODREG, 1, 0x1e, 0xd7, 1], - [CMD.DEMODREG, 1, 0x1f, 0xd8, 1], - [CMD.DEMODREG, 1, 0x20, 0xe0, 1], - [CMD.DEMODREG, 1, 0x21, 0xf2, 1], - [CMD.DEMODREG, 1, 0x22, 0x0e, 1], - [CMD.DEMODREG, 1, 0x23, 0x35, 1], - [CMD.DEMODREG, 1, 0x24, 0x06, 1], - [CMD.DEMODREG, 1, 0x25, 0x50, 1], - [CMD.DEMODREG, 1, 0x26, 0x9c, 1], - [CMD.DEMODREG, 1, 0x27, 0x0d, 1], - [CMD.DEMODREG, 1, 0x28, 0x71, 1], - [CMD.DEMODREG, 1, 0x29, 0x11, 1], - [CMD.DEMODREG, 1, 0x2a, 0x14, 1], - [CMD.DEMODREG, 1, 0x2b, 0x71, 1], - [CMD.DEMODREG, 1, 0x2c, 0x74, 1], - [CMD.DEMODREG, 1, 0x2d, 0x19, 1], - [CMD.DEMODREG, 1, 0x2e, 0x41, 1], - [CMD.DEMODREG, 1, 0x2f, 0xa5, 1], - [CMD.DEMODREG, 0, 0x19, 0x05, 1], - [CMD.DEMODREG, 1, 0x93, 0xf0, 1], - [CMD.DEMODREG, 1, 0x94, 0x0f, 1], - [CMD.DEMODREG, 1, 0x11, 0x00, 1], - [CMD.DEMODREG, 1, 0x04, 0x00, 1], - [CMD.DEMODREG, 0, 0x61, 0x60, 1], - [CMD.DEMODREG, 0, 0x06, 0x80, 1], - [CMD.DEMODREG, 1, 0xb1, 0x1b, 1], - [CMD.DEMODREG, 0, 0x0d, 0x83, 1] - ]); - - var xtalFreq = Math.floor(XTAL_FREQ * (1 + ppm / 1000000)); - await com.i2c.open(); - var found = await R820T.check(com); - if (found) { - tuner = new R820T(com, xtalFreq); +export function RTL2832U(conn, ppm, opt_gain) { + + /** + * Frequency of the oscillator crystal. + */ + const XTAL_FREQ = 28800000; + + /** + * Tuner intermediate frequency. + */ + const IF_FREQ = 3570000; + + /** + * The number of bytes for each sample. + */ + const BYTES_PER_SAMPLE = 2; + + /** + * Communications with the demodulator via USB. + */ + const com = new RtlCom(conn); + + /** + * The tuner used by the dongle. + */ + let tuner; + + /** + * Initialize the demodulator. + */ + async function open() { + await com.writeEach([ + [CMD.REG, BLOCK.USB, REG.SYSCTL, 0x09, 1], + [CMD.REG, BLOCK.USB, REG.EPA_MAXPKT, 0x0200, 2], + [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0210, 2] + ]); + await com.iface.claim(); + await com.writeEach([ + [CMD.REG, BLOCK.SYS, REG.DEMOD_CTL_1, 0x22, 1], + [CMD.REG, BLOCK.SYS, REG.DEMOD_CTL, 0xe8, 1], + [CMD.DEMODREG, 1, 0x01, 0x14, 1], + [CMD.DEMODREG, 1, 0x01, 0x10, 1], + [CMD.DEMODREG, 1, 0x15, 0x00, 1], + [CMD.DEMODREG, 1, 0x16, 0x0000, 2], + [CMD.DEMODREG, 1, 0x16, 0x00, 1], + [CMD.DEMODREG, 1, 0x17, 0x00, 1], + [CMD.DEMODREG, 1, 0x18, 0x00, 1], + [CMD.DEMODREG, 1, 0x19, 0x00, 1], + [CMD.DEMODREG, 1, 0x1a, 0x00, 1], + [CMD.DEMODREG, 1, 0x1b, 0x00, 1], + [CMD.DEMODREG, 1, 0x1c, 0xca, 1], + [CMD.DEMODREG, 1, 0x1d, 0xdc, 1], + [CMD.DEMODREG, 1, 0x1e, 0xd7, 1], + [CMD.DEMODREG, 1, 0x1f, 0xd8, 1], + [CMD.DEMODREG, 1, 0x20, 0xe0, 1], + [CMD.DEMODREG, 1, 0x21, 0xf2, 1], + [CMD.DEMODREG, 1, 0x22, 0x0e, 1], + [CMD.DEMODREG, 1, 0x23, 0x35, 1], + [CMD.DEMODREG, 1, 0x24, 0x06, 1], + [CMD.DEMODREG, 1, 0x25, 0x50, 1], + [CMD.DEMODREG, 1, 0x26, 0x9c, 1], + [CMD.DEMODREG, 1, 0x27, 0x0d, 1], + [CMD.DEMODREG, 1, 0x28, 0x71, 1], + [CMD.DEMODREG, 1, 0x29, 0x11, 1], + [CMD.DEMODREG, 1, 0x2a, 0x14, 1], + [CMD.DEMODREG, 1, 0x2b, 0x71, 1], + [CMD.DEMODREG, 1, 0x2c, 0x74, 1], + [CMD.DEMODREG, 1, 0x2d, 0x19, 1], + [CMD.DEMODREG, 1, 0x2e, 0x41, 1], + [CMD.DEMODREG, 1, 0x2f, 0xa5, 1], + [CMD.DEMODREG, 0, 0x19, 0x05, 1], + [CMD.DEMODREG, 1, 0x93, 0xf0, 1], + [CMD.DEMODREG, 1, 0x94, 0x0f, 1], + [CMD.DEMODREG, 1, 0x11, 0x00, 1], + [CMD.DEMODREG, 1, 0x04, 0x00, 1], + [CMD.DEMODREG, 0, 0x61, 0x60, 1], + [CMD.DEMODREG, 0, 0x06, 0x80, 1], + [CMD.DEMODREG, 1, 0xb1, 0x1b, 1], + [CMD.DEMODREG, 0, 0x0d, 0x83, 1] + ]); + + const xtalFreq = Math.floor(XTAL_FREQ * (1 + ppm / 1000000)); + await com.i2c.open(); + const found = await R820T.check(com); + if (found) { + tuner = new R820T(com, xtalFreq); + } + if (!tuner) { + throw new Error('Sorry, your USB dongle has an unsupported tuner chip. ' + + 'Only the R820T chip is supported.'); + } + const multiplier = -1 * Math.floor(IF_FREQ * (1 << 22) / xtalFreq); + await com.writeEach([ + [CMD.DEMODREG, 1, 0xb1, 0x1a, 1], + [CMD.DEMODREG, 0, 0x08, 0x4d, 1], + [CMD.DEMODREG, 1, 0x19, (multiplier >> 16) & 0x3f, 1], + [CMD.DEMODREG, 1, 0x1a, (multiplier >> 8) & 0xff, 1], + [CMD.DEMODREG, 1, 0x1b, multiplier & 0xff, 1], + [CMD.DEMODREG, 1, 0x15, 0x01, 1] + ]) + await tuner.init(); + await setGain(opt_gain); + await com.i2c.close(); } - if (!tuner) { - throw new Error('Sorry, your USB dongle has an unsupported tuner chip. ' + - 'Only the R820T chip is supported.'); - return; + + /** + * Sets the requested gain. + * @param {number|null|undefined} gain The gain in dB, or null/undefined + * for automatic gain. + */ + async function setGain(gain) { + if (gain == null) { + await tuner.setAutoGain(); + } else { + await tuner.setManualGain(gain); + } + } + + /** + * Set the sample rate. + * @param {number} rate The sample rate, in samples/sec. + * @return {number} The sample rate that was actually set as its first parameter. + */ + async function setSampleRate(rate) { + let ratio = Math.floor(XTAL_FREQ * (1 << 22) / rate); + ratio &= 0x0ffffffc; + const realRate = Math.floor(XTAL_FREQ * (1 << 22) / ratio); + const ppmOffset = -1 * Math.floor(ppm * (1 << 24) / 1000000); + await com.writeEach([ + [CMD.DEMODREG, 1, 0x9f, (ratio >> 16) & 0xffff, 2], + [CMD.DEMODREG, 1, 0xa1, ratio & 0xffff, 2], + [CMD.DEMODREG, 1, 0x3e, (ppmOffset >> 8) & 0x3f, 1], + [CMD.DEMODREG, 1, 0x3f, ppmOffset & 0xff, 1] + ]); + await resetDemodulator(); + return realRate; } - var multiplier = -1 * Math.floor(IF_FREQ * (1<<22) / xtalFreq); - await com.writeEach([ - [CMD.DEMODREG, 1, 0xb1, 0x1a, 1], - [CMD.DEMODREG, 0, 0x08, 0x4d, 1], - [CMD.DEMODREG, 1, 0x19, (multiplier >> 16) & 0x3f, 1], - [CMD.DEMODREG, 1, 0x1a, (multiplier >> 8) & 0xff, 1], - [CMD.DEMODREG, 1, 0x1b, multiplier & 0xff, 1], - [CMD.DEMODREG, 1, 0x15, 0x01, 1] - ]) - await tuner.init(); - await setGain(opt_gain); - await com.i2c.close(); - } - - /** - * Sets the requested gain. - * @param {number|null|undefined} gain The gain in dB, or null/undefined - * for automatic gain. - */ - async function setGain(gain) { - if (gain == null) { - await tuner.setAutoGain(); - } else { - await tuner.setManualGain(gain); + + /** + * Resets the demodulator. + */ + async function resetDemodulator() { + await com.writeEach([ + [CMD.DEMODREG, 1, 0x01, 0x14, 1], + [CMD.DEMODREG, 1, 0x01, 0x10, 1] + ]); } - } - - /** - * Set the sample rate. - * @param {number} rate The sample rate, in samples/sec. - * @return {number} The sample rate that was actually set as its first parameter. - */ - async function setSampleRate(rate) { - var ratio = Math.floor(XTAL_FREQ * (1 << 22) / rate); - ratio &= 0x0ffffffc; - var realRate = Math.floor(XTAL_FREQ * (1 << 22) / ratio); - var ppmOffset = -1 * Math.floor(ppm * (1 << 24) / 1000000); - await com.writeEach([ - [CMD.DEMODREG, 1, 0x9f, (ratio >> 16) & 0xffff, 2], - [CMD.DEMODREG, 1, 0xa1, ratio & 0xffff, 2], - [CMD.DEMODREG, 1, 0x3e, (ppmOffset >> 8) & 0x3f, 1], - [CMD.DEMODREG, 1, 0x3f, ppmOffset & 0xff, 1] - ]); - await resetDemodulator(); - return realRate; - } - - /** - * Resets the demodulator. - */ - async function resetDemodulator() { - await com.writeEach([ - [CMD.DEMODREG, 1, 0x01, 0x14, 1], - [CMD.DEMODREG, 1, 0x01, 0x10, 1] - ]); - } - - /** - * Tunes the device to the given frequency. - * @param {number} freq The frequency to tune to, in Hertz. - * @return {number} The actual tuned frequency. - */ - async function setCenterFrequency(freq) { - await com.i2c.open(); - var actualFreq = await tuner.setFrequency(freq + IF_FREQ); - await com.i2c.close(); - return (actualFreq - IF_FREQ); - } - - /** - * Resets the sample buffer. Call this before starting to read samples. - */ - async function resetBuffer() { - await com.writeEach([ - [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0210, 2], - [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0000, 2] - ]); - } - - /** - * Reads a block of samples off the device. - * @param {number} length The number of samples to read. - * @return {ArrayBuffer} An ArrayBuffer containing the read samples, which you - * can interpret as pairs of unsigned 8-bit integers; the first one is - * the sample's I value, and the second one is its Q value. - */ - async function readSamples(length) { - return await com.bulk.readBuffer(length * BYTES_PER_SAMPLE); - } - - /** - * Stops the demodulator. - */ - async function close() { - await com.i2c.open(); - await tuner.close(); - await com.i2c.close(); - await com.iface.release(); - } - - return { - open: open, - setSampleRate: setSampleRate, - setCenterFrequency: setCenterFrequency, - resetBuffer: resetBuffer, - readSamples: readSamples, - close: close - }; + + /** + * Tunes the device to the given frequency. + * @param {number} freq The frequency to tune to, in Hertz. + * @return {number} The actual tuned frequency. + */ + async function setCenterFrequency(freq) { + await com.i2c.open(); + const actualFreq = await tuner.setFrequency(freq + IF_FREQ); + await com.i2c.close(); + return (actualFreq - IF_FREQ); + } + + /** + * Resets the sample buffer. Call this before starting to read samples. + */ + async function resetBuffer() { + await com.writeEach([ + [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0210, 2], + [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0000, 2] + ]); + } + + /** + * Reads a block of samples off the device. + * @param {number} length The number of samples to read. + * @return {ArrayBuffer} An ArrayBuffer containing the read samples, which you + * can interpret as pairs of unsigned 8-bit integers; the first one is + * the sample's I value, and the second one is its Q value. + */ + async function readSamples(length) { + return com.bulk.readBuffer(length * BYTES_PER_SAMPLE); + } + + /** + * Stops the demodulator. + */ + async function close() { + await com.i2c.open(); + await tuner.close(); + await com.i2c.close(); + await com.iface.release(); + } + + return { + open: open, + setSampleRate: setSampleRate, + setCenterFrequency: setCenterFrequency, + resetBuffer: resetBuffer, + readSamples: readSamples, + close: close + }; } module.exports = RTL2832U; diff --git a/lib/rtlcom.js b/lib/rtlcom.js index 3eae4bf..4e2e001 100644 --- a/lib/rtlcom.js +++ b/lib/rtlcom.js @@ -18,399 +18,398 @@ * @param {ConnectionHandle} conn The USB connection handle. * @constructor */ -function RtlCom(conn) { - - /** - * Whether to log all USB transfers. - */ - var VERBOSE = false; - - /** - * Set in the control messages' index field for write operations. - */ - var WRITE_FLAG = 0x10; - - /** - * Writes a buffer into a dongle's register. - * @param {number} block The register's block number. - * @param {number} reg The register number. - * @param {ArrayBuffer} buffer The buffer to write. - */ - async function writeRegBuffer(block, reg, buffer) { - await writeCtrlMsg(reg, block | WRITE_FLAG, buffer); - } - - /** - * Reads a buffer from a dongle's register. - * @param {number} block The register's block number. - * @param {number} reg The register number. - * @param {number} length The length in bytes of the buffer to read. - * @return {ArrayBuffer} The read buffer. - */ - async function readRegBuffer(block, reg, length) { - return await readCtrlMsg(reg, block, length); - } - - /** - * Writes a value into a dongle's register. - * @param {number} block The register's block number. - * @param {number} reg The register number. - * @param {number} value The value to write. - * @param {number} length The width in bytes of this value. - */ - async function writeReg(block, reg, value, length) { - await writeCtrlMsg(reg, block | WRITE_FLAG, numberToBuffer(value, length)); - } - - /** - * Reads a value from a dongle's register. - * @param {number} block The register's block number. - * @param {number} reg The register number. - * @param {number} length The width in bytes of the value to read. - * @return {number} The decoded value. - */ - async function readReg(block, reg, length) { - return bufferToNumber(await readCtrlMsg(reg, block, length)); - } - - /** - * Writes a masked value into a dongle's register. - * @param {number} block The register's block number. - * @param {number} reg The register number. - * @param {number} value The value to write. - * @param {number} mask The mask for the value to write. - */ - async function writeRegMask(block, reg, value, mask) { - if (mask == 0xff) { - await writeReg(block, reg, value, 1); - } else { - var old = await readReg(block, reg, 1); - value &= mask; - old &= ~mask; - value |= old; - await writeReg(block, reg, value, 1); +export function RtlCom(conn) { + + /** + * Whether to log all USB transfers. + */ + const VERBOSE = false; + + /** + * Set in the control messages' index field for write operations. + */ + const WRITE_FLAG = 0x10; + + /** + * Writes a buffer into a dongle's register. + * @param {number} block The register's block number. + * @param {number} reg The register number. + * @param {ArrayBuffer} buffer The buffer to write. + */ + async function writeRegBuffer(block, reg, buffer) { + await writeCtrlMsg(reg, block | WRITE_FLAG, buffer); } - } - - /** - * Reads a value from a demodulator register. - * @param {number} page The register page number. - * @param {number} addr The register's address. - * @return {number} The decoded value. - */ - async function readDemodReg(page, addr) { - return await readReg(page, (addr << 8) | 0x20, 1); - } - - /** - * Writes a value into a demodulator register. - * @param {number} page The register page number. - * @param {number} addr The register's address. - * @param {number} value The value to write. - * @param {number} len The width in bytes of this value. - */ - async function writeDemodReg(page, addr, value, len) { - await writeRegBuffer(page, (addr << 8) | 0x20, numberToBuffer(value, len, true)); - return await readDemodReg(0x0a, 0x01); - } - - /** - * Opens the I2C repeater. - */ - async function openI2C() { - await writeDemodReg(1, 1, 0x18, 1); - } - - /** - * Closes the I2C repeater. - */ - async function closeI2C() { - await writeDemodReg(1, 1, 0x10, 1); - } - - /** - * Reads a value from an I2C register. - * @param {number} addr The device's address. - * @param {number} reg The register number. - */ - async function readI2CReg(addr, reg) { - await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg]).buffer); - return await readReg(BLOCK.I2C, addr, 1); - } - - /** - * Writes a value to an I2C register. - * @param {number} addr The device's address. - * @param {number} reg The register number. - * @param {number} value The value to write. - * @param {number} len The width in bytes of this value. - */ - async function writeI2CReg(addr, reg, value) { - await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg, value]).buffer); - } - - /** - * Reads a buffer from an I2C register. - * @param {number} addr The device's address. - * @param {number} reg The register number. - * @param {number} len The number of bytes to read. - */ - async function readI2CRegBuffer(addr, reg, len) { - await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg]).buffer); - return await readRegBuffer(BLOCK.I2C, addr, len); - } - - /** - * Writes a buffer to an I2C register. - * @param {number} addr The device's address. - * @param {number} reg The register number. - * @param {ArrayBuffer} buffer The buffer to write. - */ - async function writeI2CRegBuffer(addr, reg, buffer) { - var data = new Uint8Array(buffer.byteLength + 1); - data[0] = reg; - data.set(new Uint8Array(buffer), 1); - await writeRegBuffer(BLOCK.I2C, addr, data.buffer); - } - - /** - * Decodes a buffer as a little-endian number. - * @param {ArrayBuffer} buffer The buffer to decode. - * @return {number} The decoded number. - */ - function bufferToNumber(buffer) { - var len = buffer.byteLength; - var dv = new DataView(buffer); - if (len == 0) { - return null; - } else if (len == 1) { - return dv.getUint8(0); - } else if (len == 2) { - return dv.getUint16(0, true); - } else if (len == 4) { - return dv.getUint32(0, true); + + /** + * Reads a buffer from a dongle's register. + * @param {number} block The register's block number. + * @param {number} reg The register number. + * @param {number} length The length in bytes of the buffer to read. + * @return {ArrayBuffer} The read buffer. + */ + async function readRegBuffer(block, reg, length) { + return readCtrlMsg(reg, block, length); } - throw 'Cannot parse ' + len + '-byte number'; - } - - /** - * Encodes a number into a buffer. - * @param {number} value The number to encode. - * @param {number} len The number of bytes to encode into. - * @param {boolean=} opt_bigEndian Whether to use a big-endian encoding. - */ - function numberToBuffer(value, len, opt_bigEndian) { - var buffer = new ArrayBuffer(len); - var dv = new DataView(buffer); - if (len == 1) { - dv.setUint8(0, value); - } else if (len == 2) { - dv.setUint16(0, value, !opt_bigEndian); - } else if (len == 4) { - dv.setUint32(0, value, !opt_bigEndian); - } else { - throw 'Cannot write ' + len + '-byte number'; + + /** + * Writes a value into a dongle's register. + * @param {number} block The register's block number. + * @param {number} reg The register number. + * @param {number} value The value to write. + * @param {number} length The width in bytes of this value. + */ + async function writeReg(block, reg, value, length) { + await writeCtrlMsg(reg, block | WRITE_FLAG, numberToBuffer(value, length)); } - return buffer; - } - - /** - * Sends a USB control message to read from the device. - * @param {number} value The value field of the control message. - * @param {number} index The index field of the control message. - * @param {number} length The number of bytes to read. - */ - async function readCtrlMsg(value, index, length) { - var ti = { - 'requestType': 'vendor', - 'recipient': 'device', - 'direction': 'in', - 'request': 0, - 'value': value, - 'index': index, - 'length': Math.max(8, length) - }; - try { - var data = await conn.controlTransfer(ti); - data = data.slice(0, length); - if (VERBOSE) { - console.log('IN value 0x' + value.toString(16) + ' index 0x' + - index.toString(16)); - console.log(' read -> ' + dumpBuffer(data)); - } - - return data; - } catch (error) { - var msg = 'USB read failed (value 0x' + value.toString(16) + - ' index 0x' + index.toString(16) + '), message="' + error.message + '"'; - }; - } - - /** - * Sends a USB control message to write to the device. - * @param {number} value The value field of the control message. - * @param {number} index The index field of the control message. - * @param {ArrayBuffer} buffer The buffer to write to the device. - */ - async function writeCtrlMsg(value, index, buffer) { - var ti = { - 'requestType': 'vendor', - 'recipient': 'device', - 'direction': 'out', - 'request': 0, - 'value': value, - 'index': index, - 'data': buffer - }; - try { - await conn.controlTransfer(ti); - if (VERBOSE) { - console.log('OUT value 0x' + value.toString(16) + ' index 0x' + - index.toString(16) + ' data ' + dumpBuffer(buffer)); - } - } catch (error) { - var msg = 'USB write failed (value 0x' + value.toString(16) + - ' index 0x' + index.toString(16) + ' data ' + dumpBuffer(buffer) + - ') message="' + - error.message + '"'; - throw msg; - }; - } - - /** - * Does a bulk transfer from the device. - * @param {number} length The number of bytes to read. - * @return {ArrayBuffer} The received buffer. - */ - async function readBulk(length) { - var ti = { - 'direction': 'in', - 'endpoint': 1, - 'length': length - }; - try { - var data = await conn.bulkTransfer(ti); - if (VERBOSE) { - console.log('IN BULK requested ' + length + ' received ' + data.byteLength); - } - return data; - } catch(error) { - var msg = 'USB bulk read failed (length 0x' + length.toString(16) + - '), error="' + - error.message + '"'; - throw msg; + + /** + * Reads a value from a dongle's register. + * @param {number} block The register's block number. + * @param {number} reg The register number. + * @param {number} length The width in bytes of the value to read. + * @return {number} The decoded value. + */ + async function readReg(block, reg, length) { + return bufferToNumber(await readCtrlMsg(reg, block, length)); + } + + /** + * Writes a masked value into a dongle's register. + * @param {number} block The register's block number. + * @param {number} reg The register number. + * @param {number} value The value to write. + * @param {number} mask The mask for the value to write. + */ + async function writeRegMask(block, reg, value, mask) { + if (mask === 0xff) { + await writeReg(block, reg, value, 1); + } else { + let old = readReg(block, reg, 1); + value &= mask; + old &= ~mask; + value |= old; + await writeReg(block, reg, value, 1); + } + } + + /** + * Reads a value from a demodulator register. + * @param {number} page The register page number. + * @param {number} addr The register's address. + * @return {number} The decoded value. + */ + async function readDemodReg(page, addr) { + return readReg(page, (addr << 8) | 0x20, 1); + } + + /** + * Writes a value into a demodulator register. + * @param {number} page The register page number. + * @param {number} addr The register's address. + * @param {number} value The value to write. + * @param {number} len The width in bytes of this value. + */ + async function writeDemodReg(page, addr, value, len) { + await writeRegBuffer(page, (addr << 8) | 0x20, numberToBuffer(value, len, true)); + return readDemodReg(0x0a, 0x01); + } + + /** + * Opens the I2C repeater. + */ + async function openI2C() { + await writeDemodReg(1, 1, 0x18, 1); + } + + /** + * Closes the I2C repeater. + */ + async function closeI2C() { + await writeDemodReg(1, 1, 0x10, 1); + } + + /** + * Reads a value from an I2C register. + * @param {number} addr The device's address. + * @param {number} reg The register number. + */ + async function readI2CReg(addr, reg) { + await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg]).buffer); + return readReg(BLOCK.I2C, addr, 1); + } + + /** + * Writes a value to an I2C register. + * @param {number} addr The device's address. + * @param {number} reg The register number. + * @param {number} value The value to write. + */ + async function writeI2CReg(addr, reg, value) { + await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg, value]).buffer); + } + + /** + * Reads a buffer from an I2C register. + * @param {number} addr The device's address. + * @param {number} reg The register number. + * @param {number} len The number of bytes to read. + */ + async function readI2CRegBuffer(addr, reg, len) { + await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg]).buffer); + return readRegBuffer(BLOCK.I2C, addr, len); + } + + /** + * Writes a buffer to an I2C register. + * @param {number} addr The device's address. + * @param {number} reg The register number. + * @param {ArrayBuffer} buffer The buffer to write. + */ + async function writeI2CRegBuffer(addr, reg, buffer) { + const data = new Uint8Array(buffer.byteLength + 1); + data[0] = reg; + data.set(new Uint8Array(buffer), 1); + await writeRegBuffer(BLOCK.I2C, addr, data.buffer); + } + + /** + * Decodes a buffer as a little-endian number. + * @param {ArrayBuffer} buffer The buffer to decode. + * @return {number} The decoded number. + */ + function bufferToNumber(buffer) { + let len = buffer.byteLength; + const dv = new DataView(buffer); + if (len === 0) { + return null; + } else if (len === 1) { + return dv.getUint8(0); + } else if (len === 2) { + return dv.getUint16(0, true); + } else if (len === 4) { + return dv.getUint32(0, true); + } + + throw new Error('Cannot parse ' + len + '-byte number'); + } + + /** + * Encodes a number into a buffer. + * @param {number} value The number to encode. + * @param {number} len The number of bytes to encode into. + * @param {boolean=} opt_bigEndian Whether to use a big-endian encoding. + */ + function numberToBuffer(value, len, opt_bigEndian) { + const buffer = new ArrayBuffer(len); + const dv = new DataView(buffer); + if (len === 1) { + dv.setUint8(0, value); + } else if (len === 2) { + dv.setUint16(0, value, !opt_bigEndian); + } else if (len === 4) { + dv.setUint32(0, value, !opt_bigEndian); + } else { + throw new Error('Cannot write ' + len + '-byte number'); + } + return buffer; + } + + /** + * Sends a USB control message to read from the device. + * @param {number} value The value field of the control message. + * @param {number} index The index field of the control message. + * @param {number} length The number of bytes to read. + */ + async function readCtrlMsg(value, index, length) { + const ti = { + 'requestType': 'vendor', + 'recipient': 'device', + 'direction': 'in', + 'request': 0, + 'value': value, + 'index': index, + 'length': Math.max(8, length) + }; + try { + let data = await conn.controlTransfer(ti); + data = data.slice(0, length); + if (VERBOSE) { + console.log('IN value 0x' + value.toString(16) + ' index 0x' + + index.toString(16)); + console.log(' read -> ' + dumpBuffer(data)); + } + + return data; + } catch (error) { + const msg = 'USB read failed (value 0x' + value.toString(16) + + ' index 0x' + index.toString(16) + '), message="' + error.message + '"'; + throw new Error(msg); + } } - } - - /** - * Claims the USB interface. - */ - async function claimInterface() { - await conn.claimInterface(0); - } - - /** - * Releases the USB interface. - */ - async function releaseInterface() { - await conn.releaseInterface(0); - } - - /** - * Performs several write operations as specified in an array. - * @param {Array.>} array The operations to perform. - */ - async function writeEach(array) { - for (var index = 0; index < array.length; index++) { - var line = array[index]; - if (line[0] == CMD.REG) { - await writeReg(line[1], line[2], line[3], line[4]); - } else if (line[0] == CMD.REGMASK) { - await writeRegMask(line[1], line[2], line[3], line[4]); - } else if (line[0] == CMD.DEMODREG) { - await writeDemodReg(line[1], line[2], line[3], line[4]); - } else if (line[0] == CMD.I2CREG) { - await writeI2CReg(line[1], line[2], line[3]); - } else { - throw 'Unsupported operation [' + line + ']'; - } + + /** + * Sends a USB control message to write to the device. + * @param {number} value The value field of the control message. + * @param {number} index The index field of the control message. + * @param {ArrayBuffer} buffer The buffer to write to the device. + */ + async function writeCtrlMsg(value, index, buffer) { + const ti = { + 'requestType': 'vendor', + 'recipient': 'device', + 'direction': 'out', + 'request': 0, + 'value': value, + 'index': index, + 'data': buffer + }; + try { + await conn.controlTransfer(ti); + if (VERBOSE) { + console.log('OUT value 0x' + value.toString(16) + ' index 0x' + + index.toString(16) + ' data ' + dumpBuffer(buffer)); + } + } catch (error) { + const msg = 'USB write failed (value 0x' + value.toString(16) + + ' index 0x' + index.toString(16) + ' data ' + dumpBuffer(buffer) + + ') message="' + + error.message + '"'; + throw new Error(msg); + } } - } - - /** - * Returns a string representation of a buffer. - * @param {ArrayBuffer} buffer The buffer to display. - * @return {string} The string representation of the buffer. - */ - function dumpBuffer(buffer) { - var bytes = []; - var arr = new Uint8Array(buffer); - for (var i = 0; i < arr.length; ++i) { - bytes.push('0x' + arr[i].toString(16)); + + /** + * Does a bulk transfer from the device. + * @param {number} length The number of bytes to read. + * @return {ArrayBuffer} The received buffer. + */ + async function readBulk(length) { + const ti = { + 'direction': 'in', + 'endpoint': 1, + 'length': length + }; + try { + const data = await conn.bulkTransfer(ti); + if (VERBOSE) { + console.log('IN BULK requested ' + length + ' received ' + data.byteLength); + } + return data; + } catch (error) { + const msg = 'USB bulk read failed (length 0x' + length.toString(16) + + '), error="' + + error.message + '"'; + throw new Error(msg); + } } - return '[' + bytes + ']'; - } - - - return { - writeRegister: writeReg, - readRegister: readReg, - writeRegMask: writeRegMask, - demod: { - readRegister: readDemodReg, - writeRegister: writeDemodReg - }, - i2c: { - open: openI2C, - close: closeI2C, - readRegister: readI2CReg, - writeRegister: writeI2CReg, - readRegBuffer: readI2CRegBuffer - }, - bulk: { - readBuffer: readBulk - }, - iface: { - claim: claimInterface, - release: releaseInterface - }, - writeEach: writeEach - }; + + /** + * Claims the USB interface. + */ + async function claimInterface() { + await conn.claimInterface(0); + } + + /** + * Releases the USB interface. + */ + async function releaseInterface() { + await conn.releaseInterface(0); + } + + /** + * Performs several write operations as specified in an array. + * @param {Array.>} array The operations to perform. + */ + async function writeEach(array) { + for (const element of array) { + const line = element; + if (line[0] === CMD.REG) { + await writeReg(line[1], line[2], line[3], line[4]); + } else if (line[0] === CMD.REGMASK) { + await writeRegMask(line[1], line[2], line[3], line[4]); + } else if (line[0] === CMD.DEMODREG) { + await writeDemodReg(line[1], line[2], line[3], line[4]); + } else if (line[0] === CMD.I2CREG) { + await writeI2CReg(line[1], line[2], line[3]); + } else { + throw new Error('Unsupported operation [' + line + ']'); + } + } + } + + /** + * Returns a string representation of a buffer. + * @param {ArrayBuffer} buffer The buffer to display. + * @return {string} The string representation of the buffer. + */ + function dumpBuffer(buffer) { + const bytes = []; + const arr = new Uint8Array(buffer); + for (let i = 0; i < arr.length; ++i) { + bytes.push('0x' + arr[i].toString(16)); + } + return '[' + bytes + ']'; + } + + + return { + writeRegister: writeReg, + readRegister: readReg, + writeRegMask: writeRegMask, + demod: { + readRegister: readDemodReg, + writeRegister: writeDemodReg + }, + i2c: { + open: openI2C, + close: closeI2C, + readRegister: readI2CReg, + writeRegister: writeI2CReg, + readRegBuffer: readI2CRegBuffer + }, + bulk: { + readBuffer: readBulk + }, + iface: { + claim: claimInterface, + release: releaseInterface + }, + writeEach: writeEach + }; } /** * Commands for writeEach. */ -var CMD = { - REG: 1, - REGMASK: 2, - DEMODREG: 3, - I2CREG: 4 +const CMD = { + REG: 1, + REGMASK: 2, + DEMODREG: 3, + I2CREG: 4 }; /** * Register blocks. */ -var BLOCK = { - DEMOD: 0x000, - USB: 0x100, - SYS: 0x200, - I2C: 0x600 +const BLOCK = { + DEMOD: 0x000, + USB: 0x100, + SYS: 0x200, + I2C: 0x600 }; /** * Device registers. */ -var REG = { - SYSCTL: 0x2000, - EPA_CTL: 0x2148, - EPA_MAXPKT: 0x2158, - DEMOD_CTL: 0x3000, - DEMOD_CTL_1: 0x300b +const REG = { + SYSCTL: 0x2000, + EPA_CTL: 0x2148, + EPA_MAXPKT: 0x2158, + DEMOD_CTL: 0x3000, + DEMOD_CTL_1: 0x300b }; RtlCom.CMD = CMD; RtlCom.BLOCK = BLOCK; RtlCom.REG = REG; - -module.exports = RtlCom; diff --git a/lib/rtlsdr.js b/lib/rtlsdr.js index ad3b3a7..3a57ce7 100644 --- a/lib/rtlsdr.js +++ b/lib/rtlsdr.js @@ -11,72 +11,63 @@ // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. - -const usb = require('./usb'); -const RTL2832U = require('./rtl2832u'); +import {USB as usb} from './web-usb'; +import {RTL2832U} from './rtl2832u'; const FILTERS = [ - { - vendorId: 0x0bda, - productId: 0x2832 - }, - { - vendorId: 0x0bda, - productId: 0x2838 - } + { + vendorId: 0x0bda, + productId: 0x2832 + }, + { + vendorId: 0x0bda, + productId: 0x2838 + } ]; -function RtlSdr(usbDevice) { - this._usbDevice = usbDevice; - this._rtl2832u = null; +export function RtlSdr(usbDevice) { + this._usbDevice = usbDevice; + this._rtl2832u = null; } -RtlSdr.prototype.open = async function(options) { - await this._usbDevice.open(); - await this._usbDevice.selectConfiguration(1); +RtlSdr.prototype.open = async function (options) { + await this._usbDevice.open(); + await this._usbDevice.selectConfiguration(1); - this._rtl2832u = new RTL2832U(this._usbDevice, options.ppm || 0, options.gain || null); + this._rtl2832u = new RTL2832U(this._usbDevice, options.ppm || 0, options.gain || null); - await this._rtl2832u.open(); + await this._rtl2832u.open(); }; -RtlSdr.prototype.setSampleRate = async function(sampleRate) { - return await this._rtl2832u.setSampleRate(sampleRate); +RtlSdr.prototype.setSampleRate = async function (sampleRate) { + return this._rtl2832u.setSampleRate(sampleRate); }; -RtlSdr.prototype.setCenterFrequency = async function(centerFrequency) { - return await this._rtl2832u.setCenterFrequency(centerFrequency); +RtlSdr.prototype.setCenterFrequency = async function (centerFrequency) { + return this._rtl2832u.setCenterFrequency(centerFrequency); }; -RtlSdr.prototype.resetBuffer = async function() { - await this._rtl2832u.resetBuffer(); +RtlSdr.prototype.resetBuffer = async function () { + await this._rtl2832u.resetBuffer(); }; -RtlSdr.prototype.readSamples = async function(length) { - return await this._rtl2832u.readSamples(length); +RtlSdr.prototype.readSamples = async function (length) { + return this._rtl2832u.readSamples(length); }; -RtlSdr.prototype.close = async function() { - await this._rtl2832u.close(); - await this._usbDevice.close(); +RtlSdr.prototype.close = async function () { + await this._rtl2832u.close(); + await this._usbDevice.close(); }; -RtlSdr.requestDevice = async function() { - let usbDevice = await usb.requestDevice(FILTERS); +RtlSdr.requestDevice = async function () { + let usbDevice = await usb.requestDevice(FILTERS); - return new RtlSdr(usbDevice); + return new RtlSdr(usbDevice); }; -RtlSdr.getDevices = async function() { - let usbDevices = await usb.getDevices(FILTERS); - - const sdrs = []; +RtlSdr.getDevices = async function () { + let usbDevices = await usb.getDevices(FILTERS); - usbDevices.forEach((usbDevice) => { - sdrs.push(new RtlSdr(usbDevice)); - }); - - return sdrs; + return usbDevices.map((usbDevice) => new RtlSdr(usbDevice)); }; - -module.exports = RtlSdr; diff --git a/lib/web-usb.js b/lib/web-usb.js index 12d8673..45a33c6 100644 --- a/lib/web-usb.js +++ b/lib/web-usb.js @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. -function USB(device) { +export function USB(device) { this._device = device; } @@ -24,12 +24,12 @@ USB.prototype.selectConfiguration = async function(configuration) { await this._device.selectConfiguration(configuration); }; -USB.prototype.claimInterface = async function(interface) { - await this._device.claimInterface(interface); +USB.prototype.claimInterface = async function(deviceInterface) { + await this._device.claimInterface(deviceInterface); }; -USB.prototype.releaseInterface = async function(interface) { - await this._device.releaseInterface(interface); +USB.prototype.releaseInterface = async function(deviceInterface) { + await this._device.releaseInterface(deviceInterface); }; USB.prototype.controlTransfer = async function(ti) { @@ -60,7 +60,7 @@ USB.requestDevice = async function(filters) { return new USB(usbDevice); }; -USB.getDevices = async function(filters, callback) { +USB.getDevices = async function(filters) { const usbDevices = navigator.usb.getDevices(); const devices = []; @@ -74,5 +74,3 @@ USB.getDevices = async function(filters, callback) { return devices; }; - -module.exports = USB; diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..7606825 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,2916 @@ +{ + "name": "rtlsdrjs", + "version": "0.0.0", + "lockfileVersion": 2, + "requires": true, + "packages": { + "": { + "name": "rtlsdrjs", + "version": "0.0.0", + "license": "Apache-2.0", + "dependencies": { + "usb": "^1.3.1" + }, + "devDependencies": { + "browserify": "^16.1.1" + } + }, + "node_modules/acorn": { + "version": "7.4.1", + "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.4.1.tgz", + "integrity": 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"integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==", + "dev": true + } + } +} From bc8e5e27594150a33d191942d9e92a756a72c196 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 21:02:56 +0200 Subject: [PATCH 02/20] fix(usb): Add await --- lib/web-usb.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/web-usb.js b/lib/web-usb.js index 45a33c6..5286a13 100644 --- a/lib/web-usb.js +++ b/lib/web-usb.js @@ -61,7 +61,7 @@ USB.requestDevice = async function(filters) { }; USB.getDevices = async function(filters) { - const usbDevices = navigator.usb.getDevices(); + const usbDevices = await navigator.usb.getDevices(); const devices = []; usbDevices.forEach((usbDevice) => { From 3e9c386c4de11d99a93e7b158d2acc5b2bc18251 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 21:10:52 +0200 Subject: [PATCH 03/20] fix(usb): Add logging and clean up --- lib/web-usb.js | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/lib/web-usb.js b/lib/web-usb.js index 5286a13..3c3cb57 100644 --- a/lib/web-usb.js +++ b/lib/web-usb.js @@ -60,17 +60,14 @@ USB.requestDevice = async function(filters) { return new USB(usbDevice); }; -USB.getDevices = async function(filters) { +USB.getDevices = async function (filters) { const usbDevices = await navigator.usb.getDevices(); - const devices = []; - usbDevices.forEach((usbDevice) => { - filters.forEach((filter) => { - if (filter.vendorId === usbDevice.vendorId && filter.productId === usbDevice.productId) { - devices.push(new USB(usbDevice)); - } - }); - }); + console.debug('USB devices', usbDevices); - return devices; + return usbDevices + .filter((usbDevice) => { + return filters.some(filter => filter.vendorId === usbDevice.vendorId && filter.productId === usbDevice.productId); + }) + .map(usbDevice => new USB(usbDevice)); }; From fdb79dca29e5bacc5d3c4f649581c4c5c167904b Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 21:17:54 +0200 Subject: [PATCH 04/20] fix(RtlSdr): Return promise in resetBuffer --- lib/rtlsdr.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/rtlsdr.js b/lib/rtlsdr.js index 3a57ce7..cfac50b 100644 --- a/lib/rtlsdr.js +++ b/lib/rtlsdr.js @@ -48,7 +48,7 @@ RtlSdr.prototype.setCenterFrequency = async function (centerFrequency) { }; RtlSdr.prototype.resetBuffer = async function () { - await this._rtl2832u.resetBuffer(); + return this._rtl2832u.resetBuffer(); }; RtlSdr.prototype.readSamples = async function (length) { From 6f24a69995281ffee1427a4f4c1f438f47ceff2c Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 21:34:40 +0200 Subject: [PATCH 05/20] refactor(RTL2832U): Return into class --- lib/rtl2832u.js | 134 +++++++++++++++++++++++++----------------------- lib/rtlsdr.js | 2 +- 2 files changed, 70 insertions(+), 66 deletions(-) diff --git a/lib/rtl2832u.js b/lib/rtl2832u.js index f4dc157..5524567 100644 --- a/lib/rtl2832u.js +++ b/lib/rtl2832u.js @@ -20,51 +20,66 @@ const CMD = RtlCom.CMD; const BLOCK = RtlCom.BLOCK; const REG = RtlCom.REG; -/** - * Operations on the RTL2832U demodulator. - * @param {ConnectionHandle} conn The USB connection handle. - * @param {number} ppm The frequency correction factor, in parts per million. - * @param {number=} opt_gain The optional gain in dB. If unspecified or null, sets auto gain. - * @constructor - */ -export function RTL2832U(conn, ppm, opt_gain) { - +export class RTL2832U { /** * Frequency of the oscillator crystal. */ - const XTAL_FREQ = 28800000; + static XTAL_FREQ = 28800000; /** * Tuner intermediate frequency. */ - const IF_FREQ = 3570000; + static IF_FREQ = 3570000; /** * The number of bytes for each sample. */ - const BYTES_PER_SAMPLE = 2; + static BYTES_PER_SAMPLE = 2; /** * Communications with the demodulator via USB. */ - const com = new RtlCom(conn); + #com; + + /** + * ppm (?) + */ + #ppm; + + /** + * Optional gain + */ + #opt_gain; /** * The tuner used by the dongle. */ - let tuner; + #tuner; + + /** + * Operations on the RTL2832U demodulator. + * @param {ConnectionHandle} conn The USB connection handle. + * @param {number} ppm The frequency correction factor, in parts per million. + * @param {number=} opt_gain The optional gain in dB. If unspecified or null, sets auto gain. + * @constructor + */ + constructor(conn, ppm = 0, opt_gain = undefined) { + this.#com = new RtlCom(conn); + this.#ppm = ppm; + this.#opt_gain = opt_gain; + } /** * Initialize the demodulator. */ - async function open() { - await com.writeEach([ + async open() { + await this.#com.writeEach([ [CMD.REG, BLOCK.USB, REG.SYSCTL, 0x09, 1], [CMD.REG, BLOCK.USB, REG.EPA_MAXPKT, 0x0200, 2], [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0210, 2] ]); - await com.iface.claim(); - await com.writeEach([ + await this.#com.iface.claim(); + await this.#com.writeEach([ [CMD.REG, BLOCK.SYS, REG.DEMOD_CTL_1, 0x22, 1], [CMD.REG, BLOCK.SYS, REG.DEMOD_CTL, 0xe8, 1], [CMD.DEMODREG, 1, 0x01, 0x14, 1], @@ -108,18 +123,18 @@ export function RTL2832U(conn, ppm, opt_gain) { [CMD.DEMODREG, 0, 0x0d, 0x83, 1] ]); - const xtalFreq = Math.floor(XTAL_FREQ * (1 + ppm / 1000000)); - await com.i2c.open(); - const found = await R820T.check(com); + const xtalFreq = Math.floor(RTL2832U.XTAL_FREQ * (1 + this.#ppm / 1000000)); + await this.#com.i2c.open(); + const found = R820T.check(com); if (found) { - tuner = new R820T(com, xtalFreq); + this.#tuner = new R820T(this.#com, xtalFreq); } - if (!tuner) { + if (!this.#tuner) { throw new Error('Sorry, your USB dongle has an unsupported tuner chip. ' + 'Only the R820T chip is supported.'); } - const multiplier = -1 * Math.floor(IF_FREQ * (1 << 22) / xtalFreq); - await com.writeEach([ + const multiplier = -1 * Math.floor(RTL2832U.IF_FREQ * (1 << 22) / xtalFreq); + await this.#com.writeEach([ [CMD.DEMODREG, 1, 0xb1, 0x1a, 1], [CMD.DEMODREG, 0, 0x08, 0x4d, 1], [CMD.DEMODREG, 1, 0x19, (multiplier >> 16) & 0x3f, 1], @@ -127,9 +142,9 @@ export function RTL2832U(conn, ppm, opt_gain) { [CMD.DEMODREG, 1, 0x1b, multiplier & 0xff, 1], [CMD.DEMODREG, 1, 0x15, 0x01, 1] ]) - await tuner.init(); - await setGain(opt_gain); - await com.i2c.close(); + await this.#tuner.init(); + await this.setGain(this.#opt_gain); + await this.#com.i2c.close(); } /** @@ -137,11 +152,11 @@ export function RTL2832U(conn, ppm, opt_gain) { * @param {number|null|undefined} gain The gain in dB, or null/undefined * for automatic gain. */ - async function setGain(gain) { - if (gain == null) { - await tuner.setAutoGain(); + async setGain(gain) { + if (gain) { + await this.#tuner.setManualGain(gain); } else { - await tuner.setManualGain(gain); + await this.#tuner.setAutoGain(); } } @@ -150,26 +165,26 @@ export function RTL2832U(conn, ppm, opt_gain) { * @param {number} rate The sample rate, in samples/sec. * @return {number} The sample rate that was actually set as its first parameter. */ - async function setSampleRate(rate) { - let ratio = Math.floor(XTAL_FREQ * (1 << 22) / rate); + async setSampleRate(rate) { + let ratio = Math.floor(RTL2832U.XTAL_FREQ * (1 << 22) / rate); ratio &= 0x0ffffffc; - const realRate = Math.floor(XTAL_FREQ * (1 << 22) / ratio); - const ppmOffset = -1 * Math.floor(ppm * (1 << 24) / 1000000); - await com.writeEach([ + const realRate = Math.floor(RTL2832U.XTAL_FREQ * (1 << 22) / ratio); + const ppmOffset = -1 * Math.floor(this.#ppm * (1 << 24) / 1000000); + await this.#com.writeEach([ [CMD.DEMODREG, 1, 0x9f, (ratio >> 16) & 0xffff, 2], [CMD.DEMODREG, 1, 0xa1, ratio & 0xffff, 2], [CMD.DEMODREG, 1, 0x3e, (ppmOffset >> 8) & 0x3f, 1], [CMD.DEMODREG, 1, 0x3f, ppmOffset & 0xff, 1] ]); - await resetDemodulator(); + await this.resetDemodulator(); return realRate; } /** * Resets the demodulator. */ - async function resetDemodulator() { - await com.writeEach([ + async resetDemodulator() { + await this.#com.writeEach([ [CMD.DEMODREG, 1, 0x01, 0x14, 1], [CMD.DEMODREG, 1, 0x01, 0x10, 1] ]); @@ -180,18 +195,18 @@ export function RTL2832U(conn, ppm, opt_gain) { * @param {number} freq The frequency to tune to, in Hertz. * @return {number} The actual tuned frequency. */ - async function setCenterFrequency(freq) { - await com.i2c.open(); - const actualFreq = await tuner.setFrequency(freq + IF_FREQ); - await com.i2c.close(); - return (actualFreq - IF_FREQ); + async setCenterFrequency(freq) { + await this.#com.i2c.open(); + const actualFreq = this.#tuner.setFrequency(freq + IF_FREQ); + await this.#com.i2c.close(); + return (actualFreq - RTL2832U.IF_FREQ); } /** * Resets the sample buffer. Call this before starting to read samples. */ - async function resetBuffer() { - await com.writeEach([ + async resetBuffer() { + await this.#com.writeEach([ [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0210, 2], [CMD.REG, BLOCK.USB, REG.EPA_CTL, 0x0000, 2] ]); @@ -204,28 +219,17 @@ export function RTL2832U(conn, ppm, opt_gain) { * can interpret as pairs of unsigned 8-bit integers; the first one is * the sample's I value, and the second one is its Q value. */ - async function readSamples(length) { - return com.bulk.readBuffer(length * BYTES_PER_SAMPLE); + async readSamples(length) { + return this.#com.bulk.readBuffer(length * RTL2832U.BYTES_PER_SAMPLE); } /** * Stops the demodulator. */ - async function close() { - await com.i2c.open(); - await tuner.close(); - await com.i2c.close(); - await com.iface.release(); + async close() { + await this.#com.i2c.open(); + await this.#tuner.close(); + await this.#com.i2c.close(); + await this.#com.iface.release(); } - - return { - open: open, - setSampleRate: setSampleRate, - setCenterFrequency: setCenterFrequency, - resetBuffer: resetBuffer, - readSamples: readSamples, - close: close - }; } - -module.exports = RTL2832U; diff --git a/lib/rtlsdr.js b/lib/rtlsdr.js index cfac50b..b05d860 100644 --- a/lib/rtlsdr.js +++ b/lib/rtlsdr.js @@ -34,7 +34,7 @@ RtlSdr.prototype.open = async function (options) { await this._usbDevice.open(); await this._usbDevice.selectConfiguration(1); - this._rtl2832u = new RTL2832U(this._usbDevice, options.ppm || 0, options.gain || null); + this._rtl2832u = new RTL2832U(this._usbDevice, options.ppm, options.gain); await this._rtl2832u.open(); }; From c9ccbd413ba248923095f450cfec1a78dd7396c8 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 21:56:54 +0200 Subject: [PATCH 06/20] refactor(RTL2832U): Return into class --- lib/rtl2832u.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/rtl2832u.js b/lib/rtl2832u.js index 5524567..f4107e2 100644 --- a/lib/rtl2832u.js +++ b/lib/rtl2832u.js @@ -125,7 +125,7 @@ export class RTL2832U { const xtalFreq = Math.floor(RTL2832U.XTAL_FREQ * (1 + this.#ppm / 1000000)); await this.#com.i2c.open(); - const found = R820T.check(com); + const found = R820T.check(this.#com); if (found) { this.#tuner = new R820T(this.#com, xtalFreq); } From 7b22f4cce7082d9ce7d462e466dcf2518d2b1ac7 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 21:57:24 +0200 Subject: [PATCH 07/20] refactor(R820T): Return into class --- lib/r820t.js | 166 ++++++++++++++++++++++++++------------------------- 1 file changed, 86 insertions(+), 80 deletions(-) diff --git a/lib/r820t.js b/lib/r820t.js index d8a46b2..79b0bdf 100644 --- a/lib/r820t.js +++ b/lib/r820t.js @@ -22,19 +22,19 @@ const CMD = RtlCom.CMD; * @param {number} xtalFreq The frequency of the oscillator crystal. * @constructor */ -export function R820T(com, xtalFreq) { +export class R820T { /** * Initial values for registers 0x05-0x1f. */ - const REGISTERS = [0x83, 0x32, 0x75, 0xc0, 0x40, 0xd6, 0x6c, 0xf5, 0x63, 0x75, + static REGISTERS = [0x83, 0x32, 0x75, 0xc0, 0x40, 0xd6, 0x6c, 0xf5, 0x63, 0x75, 0x68, 0x6c, 0x83, 0x80, 0x00, 0x0f, 0x00, 0xc0, 0x30, 0x48, 0xcc, 0x60, 0x00, 0x54, 0xae, 0x4a, 0xc0]; /** * Configurations for the multiplexer in different frequency bands. */ - const MUX_CFGS = [ + static MUX_CFGS = [ [0, 0x08, 0x02, 0xdf], [50, 0x08, 0x02, 0xbe], [55, 0x08, 0x02, 0x8b], @@ -55,26 +55,50 @@ export function R820T(com, xtalFreq) { /** * A bit mask to reverse the bits in a byte. */ - const BIT_REVS = [0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6, 0xe, + static BIT_REVS = [0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6, 0xe, 0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf]; /** * Whether the PLL in the tuner is locked. */ - let hasPllLock = false; + #hasPllLock = false; /** * Shadow registers 0x05-0x1f, for setting values using masks. */ - let shadowRegs; + #shadowRegs; + /** + * Communications with the demodulator via USB. + */ + #com; + + /** + * Frequency of the oscillator crystal. (?) + */ + #xtalFreq; + + constructor(com, xtalFreq) { + this.#com = com; + this.#xtalFreq = xtalFreq; + } + + /** + * Checks if the R820T tuner is present. + * @param {RtlCom} com The RTL communications object. + * @return {boolean} A boolean that tells whether the tuner is present. + */ + static async check(com) { + const data = await com.i2c.readRegister(0x34, 0); + return (data === 0x69); + } /** * Initializes the tuner. */ - async function init() { - await initRegisters(REGISTERS); - await initElectronics(); + async init() { + await this.#initRegisters(R820T.REGISTERS); + await this.#initElectronics(); } /** @@ -82,16 +106,16 @@ export function R820T(com, xtalFreq) { * @param {number} freq The frequency to tune to. * @return {number} The actual tuned frequency. */ - async function setFrequency(freq) { - await setMux(freq); - return setPll(freq); + async setFrequency(freq) { + await this.#setMux(freq); + return this.#setPll(freq); } /** * Stops the tuner. */ - async function close() { - await writeEach([ + async close() { + await this.#writeEach([ [0x06, 0xb1, 0xff], [0x05, 0xb3, 0xff], [0x07, 0x3a, 0xff], @@ -109,14 +133,14 @@ export function R820T(com, xtalFreq) { /** * Initializes all the components of the tuner. */ - async function initElectronics() { - await writeEach([ + async #initElectronics() { + await this.#writeEach([ [0x0c, 0x00, 0x0f], [0x13, 49, 0x3f], [0x1d, 0x00, 0x38] ]); - const filterCap = await calibrateFilter(true); - await writeEach([ + const filterCap = await this.#calibrateFilter(true); + await this.#writeEach([ [0x0a, 0x10 | filterCap, 0x1f], [0x0b, 0x6b, 0xef], [0x07, 0x00, 0x80], @@ -149,8 +173,8 @@ export function R820T(com, xtalFreq) { /** * Sets the tuner to automatic gain. */ - async function setAutoGain() { - await writeEach([ + async setAutoGain() { + await this.#writeEach([ [0x05, 0x00, 0x10], [0x07, 0x10, 0x10], [0x0c, 0x0b, 0x9f] @@ -161,7 +185,7 @@ export function R820T(com, xtalFreq) { * Sets the tuner's manual gain. * @param {number} gain The tuner's gain, in dB. */ - async function setManualGain(gain) { + async setManualGain(gain) { let step; if (gain <= 15) { step = Math.round(1.36 + gain * (1.1118 + gain * (-0.0786 + gain * 0.0027))); @@ -175,7 +199,7 @@ export function R820T(com, xtalFreq) { } const lnaValue = Math.floor(step / 2); const mixerValue = Math.floor((step - 1) / 2); - await writeEach([ + await this.#writeEach([ [0x05, 0x10, 0x10], [0x07, 0x00, 0x10], [0x0c, 0x08, 0x9f], @@ -188,29 +212,29 @@ export function R820T(com, xtalFreq) { * Calibrates the filters. * @param {boolean} firstTry Whether this is the first try to calibrate. */ - async function calibrateFilter(firstTry) { - await writeEach([ + async #calibrateFilter(firstTry) { + await this.#writeEach([ [0x0b, 0x6b, 0x60], [0x0f, 0x04, 0x04], [0x10, 0x00, 0x03] ]); - await setPll(56000000); - if (!hasPllLock) { + await this.#setPll(56000000); + if (!this.#hasPllLock) { throw new Error("PLL not locked -- cannot tune to the selected frequency."); } - await writeEach([ + await this.#writeEach([ [0x0b, 0x10, 0x10], [0x0b, 0x00, 0x10], [0x0f, 0x00, 0x04] ]); - const data = await readRegBuffer(0x00, 5); + const data = await this.#readRegBuffer(0x00, 5); const arr = new Uint8Array(data); let filterCap = arr[4] & 0x0f; if (filterCap === 0x0f) { filterCap = 0; } if (filterCap !== 0 && firstTry) { - return calibrateFilter(false); + return this.#calibrateFilter(false); } else { return (filterCap); } @@ -220,16 +244,16 @@ export function R820T(com, xtalFreq) { * Sets the multiplexer's frequency. * @param {number} freq The frequency to set. */ - async function setMux(freq) { + async #setMux(freq) { const freqMhz = freq / 1000000; let i = 0; - for (; i < MUX_CFGS.length - 1; ++i) { - if (freqMhz < MUX_CFGS[i + 1][0]) { + for (; i < R820T.MUX_CFGS.length - 1; ++i) { + if (freqMhz < R820T.MUX_CFGS[i + 1][0]) { break; } } - const cfg = MUX_CFGS[i]; - await writeEach([ + const cfg = R820T.MUX_CFGS[i]; + await this.#writeEach([ [0x17, cfg[1], 0x08], [0x1a, cfg[2], 0xc3], [0x1b, cfg[3], 0xff], @@ -243,16 +267,16 @@ export function R820T(com, xtalFreq) { * Sets the PLL's frequency. * @param {number} freq The frequency to set. */ - async function setPll(freq) { - const pllRef = Math.floor(xtalFreq); - await writeEach([ + async #setPll(freq) { + const pllRef = Math.floor(this.#xtalFreq); + await this.#writeEach([ [0x10, 0x00, 0x10], [0x1a, 0x00, 0x0c], [0x12, 0x80, 0xe0] ]); let divNum = Math.min(6, Math.floor(Math.log(1770000000 / freq) / Math.LN2)); const mixDiv = 1 << (divNum + 1); - const data = await readRegBuffer(0x00, 5); + const data = await this.#readRegBuffer(0x00, 5); const arr = new Uint8Array(data); const vcoFineTune = (arr[4] & 0x30) >> 4; if (vcoFineTune > 2) { @@ -260,27 +284,27 @@ export function R820T(com, xtalFreq) { } else if (vcoFineTune < 2) { ++divNum; } - await writeRegMask(0x10, divNum << 5, 0xe0); + await this.#writeRegMask(0x10, divNum << 5, 0xe0); const vcoFreq = freq * mixDiv; const nint = Math.floor(vcoFreq / (2 * pllRef)); const vcoFra = vcoFreq % (2 * pllRef); if (nint > 63) { - hasPllLock = false; + this.#hasPllLock = false; return; } const ni = Math.floor((nint - 13) / 4); const si = (nint - 13) % 4; - await writeEach([ + await this.#writeEach([ [0x14, ni + (si << 6), 0xff], [0x12, vcoFra === 0 ? 0x08 : 0x00, 0x08] ]); const sdm = Math.min(65535, Math.floor(32768 * vcoFra / pllRef)); - await writeEach([ + await this.#writeEach([ [0x16, sdm >> 8, 0xff], [0x15, sdm & 0xff, 0xff] ]); - await getPllLock(true); - await writeRegMask(0x1a, 0x08, 0x08); + await this.#getPllLock(true); + await this.#writeRegMask(0x1a, 0x08, 0x08); const actualFreq = 2 * pllRef * (nint + sdm / 65536) / mixDiv; return (actualFreq); } @@ -289,18 +313,18 @@ export function R820T(com, xtalFreq) { * Checks whether the PLL has achieved lock. * @param {boolean} firstTry Whether this is the first try to achieve lock. */ - async function getPllLock(firstTry) { - const data = await readRegBuffer(0x00, 3); + async #getPllLock(firstTry) { + const data = await this.#readRegBuffer(0x00, 3); const arr = new Uint8Array(data); if (arr[2] & 0x40) { - hasPllLock = true; + this.#hasPllLock = true; return; } if (firstTry) { - await writeRegMask(0x12, 0x60, 0xe0); - return getPllLock(false); + await this.#writeRegMask(0x12, 0x60, 0xe0); + return this.#getPllLock(false); } else { - hasPllLock = false; + this.#hasPllLock = false; } } @@ -308,13 +332,13 @@ export function R820T(com, xtalFreq) { * Sets the initial values of the 0x05-0x1f registers. * @param {Array.} regs The values for the registers. */ - async function initRegisters(regs) { - shadowRegs = new Uint8Array(regs); + async #initRegisters(regs) { + this.#shadowRegs = new Uint8Array(regs); const cmds = []; for (let i = 0; i < regs.length; ++i) { cmds.push([CMD.I2CREG, 0x34, i + 5, regs[i]]); } - await com.writeEach(cmds); + await this.#com.writeEach(cmds); } /** @@ -323,12 +347,12 @@ export function R820T(com, xtalFreq) { * @param {number} length The number of registers to read. * @return {ArrayBuffer} An ArrayBuffer with the data. */ - async function readRegBuffer(addr, length) { - const data = await com.i2c.readRegBuffer(0x34, addr, length); + async #readRegBuffer(addr, length) { + const data = await this.#com.i2c.readRegBuffer(0x34, addr, length); const buf = new Uint8Array(data); for (let i = 0; i < buf.length; ++i) { const b = buf[i]; - buf[i] = (BIT_REVS[b & 0xf] << 4) | BIT_REVS[b >> 4]; + buf[i] = (R820T.BIT_REVS[b & 0xf] << 4) | R820T.BIT_REVS[b >> 4]; } return (buf.buffer); } @@ -339,39 +363,21 @@ export function R820T(com, xtalFreq) { * @param {number} value The value to write. * @param {number} mask A mask that specifies which bits to write. */ - async function writeRegMask(addr, value, mask) { - const rc = shadowRegs[addr - 5]; + async #writeRegMask(addr, value, mask) { + const rc = this.#shadowRegs[addr - 5]; const val = (rc & ~mask) | (value & mask); - shadowRegs[addr - 5] = val; - await com.i2c.writeRegister(0x34, addr, val); + this.#shadowRegs[addr - 5] = val; + await this.#com.i2c.writeRegister(0x34, addr, val); } /** * Perform the write operations given in the array. * @param {Array.>} array The operations. */ - async function writeEach(array) { + async #writeEach(array) { for (let i = 0; i < array.length; i++) { const line = array[i]; - await writeRegMask(line[0], line[1], line[2]); + await this.#writeRegMask(line[0], line[1], line[2]); } } - - return { - init: init, - setFrequency: setFrequency, - setAutoGain: setAutoGain, - setManualGain: setManualGain, - close: close - }; } - -/** - * Checks if the R820T tuner is present. - * @param {RtlCom} com The RTL communications object. - * @return {boolean} A boolean that tells whether the tuner is present. - */ -R820T.check = async function (com) { - const data = await com.i2c.readRegister(0x34, 0); - return (data === 0x69); -}; From 957c1d9595985a65cbab4e7e3283e5c79a28f24d Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 21:59:00 +0200 Subject: [PATCH 08/20] fix(RTL2832U): Change to use static --- lib/rtl2832u.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/rtl2832u.js b/lib/rtl2832u.js index f4107e2..e7bfac7 100644 --- a/lib/rtl2832u.js +++ b/lib/rtl2832u.js @@ -197,7 +197,7 @@ export class RTL2832U { */ async setCenterFrequency(freq) { await this.#com.i2c.open(); - const actualFreq = this.#tuner.setFrequency(freq + IF_FREQ); + const actualFreq = this.#tuner.setFrequency(freq + RTL2832U.IF_FREQ); await this.#com.i2c.close(); return (actualFreq - RTL2832U.IF_FREQ); } From 367cfd1ece59baca8450bffe3fd974af709060f4 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 22:29:16 +0200 Subject: [PATCH 09/20] refactor(RtlCom): Return into class --- lib/rtlcom.js | 253 +++++++++++++++++++++++++------------------------- 1 file changed, 124 insertions(+), 129 deletions(-) diff --git a/lib/rtlcom.js b/lib/rtlcom.js index 4e2e001..7351971 100644 --- a/lib/rtlcom.js +++ b/lib/rtlcom.js @@ -13,22 +13,78 @@ // See the License for the specific language governing permissions and // limitations under the License. -/** - * Low-level communications with the RTL2832U-based dongle. - * @param {ConnectionHandle} conn The USB connection handle. - * @constructor - */ -export function RtlCom(conn) { +export class RtlCom { /** * Whether to log all USB transfers. */ - const VERBOSE = false; + static VERBOSE = false; /** * Set in the control messages' index field for write operations. */ - const WRITE_FLAG = 0x10; + static WRITE_FLAG = 0x10; + + /** + * Commands for writeEach. + */ + static CMD = { + REG: 1, + REGMASK: 2, + DEMODREG: 3, + I2CREG: 4 + }; + + /** + * Register blocks. + */ + static BLOCK = { + DEMOD: 0x000, + USB: 0x100, + SYS: 0x200, + I2C: 0x600 + }; + + /** + * Device registers. + */ + static REG = { + SYSCTL: 0x2000, + EPA_CTL: 0x2148, + EPA_MAXPKT: 0x2158, + DEMOD_CTL: 0x3000, + DEMOD_CTL_1: 0x300b + }; + + #conn; + + /** + * Low-level communications with the RTL2832U-based dongle. + * @param {ConnectionHandle} conn The USB connection handle. + * @constructor + */ + constructor(conn) { + this.#conn = conn; + } + + demod = { + readRegister: this.#readDemodReg, + writeRegister: this.#writeDemodReg + } + i2c = { + open: this.#openI2C, + close: this.#closeI2C, + readRegister: this.#readI2CReg, + writeRegister: this.#writeI2CReg, + readRegBuffer: this.#readI2CRegBuffer + } + bulk = { + readBuffer: this.#readBulk + } + iface = { + claim: this.#claimInterface, + release: this.#releaseInterface + } /** * Writes a buffer into a dongle's register. @@ -36,8 +92,8 @@ export function RtlCom(conn) { * @param {number} reg The register number. * @param {ArrayBuffer} buffer The buffer to write. */ - async function writeRegBuffer(block, reg, buffer) { - await writeCtrlMsg(reg, block | WRITE_FLAG, buffer); + async #writeRegBuffer(block, reg, buffer) { + await this.#writeCtrlMsg(reg, block | RtlCom.WRITE_FLAG, buffer); } /** @@ -47,8 +103,8 @@ export function RtlCom(conn) { * @param {number} length The length in bytes of the buffer to read. * @return {ArrayBuffer} The read buffer. */ - async function readRegBuffer(block, reg, length) { - return readCtrlMsg(reg, block, length); + async #readRegBuffer(block, reg, length) { + return this.#readCtrlMsg(reg, block, length); } /** @@ -58,8 +114,8 @@ export function RtlCom(conn) { * @param {number} value The value to write. * @param {number} length The width in bytes of this value. */ - async function writeReg(block, reg, value, length) { - await writeCtrlMsg(reg, block | WRITE_FLAG, numberToBuffer(value, length)); + async writeRegister(block, reg, value, length) { + await this.#writeCtrlMsg(reg, block | RtlCom.WRITE_FLAG, RtlCom.numberToBuffer(value, length)); } /** @@ -69,8 +125,8 @@ export function RtlCom(conn) { * @param {number} length The width in bytes of the value to read. * @return {number} The decoded value. */ - async function readReg(block, reg, length) { - return bufferToNumber(await readCtrlMsg(reg, block, length)); + async readRegister(block, reg, length) { + return RtlCom.bufferToNumber(await this.#readCtrlMsg(reg, block, length)); } /** @@ -80,15 +136,15 @@ export function RtlCom(conn) { * @param {number} value The value to write. * @param {number} mask The mask for the value to write. */ - async function writeRegMask(block, reg, value, mask) { + async writeRegMask(block, reg, value, mask) { if (mask === 0xff) { - await writeReg(block, reg, value, 1); + await this.writeRegister(block, reg, value, 1); } else { - let old = readReg(block, reg, 1); + let old = this.readRegister(block, reg, 1); value &= mask; old &= ~mask; value |= old; - await writeReg(block, reg, value, 1); + await this.writeRegister(block, reg, value, 1); } } @@ -98,8 +154,8 @@ export function RtlCom(conn) { * @param {number} addr The register's address. * @return {number} The decoded value. */ - async function readDemodReg(page, addr) { - return readReg(page, (addr << 8) | 0x20, 1); + async #readDemodReg(page, addr) { + return this.readRegister(page, (addr << 8) | 0x20, 1); } /** @@ -109,23 +165,23 @@ export function RtlCom(conn) { * @param {number} value The value to write. * @param {number} len The width in bytes of this value. */ - async function writeDemodReg(page, addr, value, len) { - await writeRegBuffer(page, (addr << 8) | 0x20, numberToBuffer(value, len, true)); - return readDemodReg(0x0a, 0x01); + async #writeDemodReg(page, addr, value, len) { + await this.#writeRegBuffer(page, (addr << 8) | 0x20, RtlCom.numberToBuffer(value, len, true)); + return this.#readDemodReg(0x0a, 0x01); } /** * Opens the I2C repeater. */ - async function openI2C() { - await writeDemodReg(1, 1, 0x18, 1); + async #openI2C() { + await this.#writeDemodReg(1, 1, 0x18, 1); } /** * Closes the I2C repeater. */ - async function closeI2C() { - await writeDemodReg(1, 1, 0x10, 1); + async #closeI2C() { + await this.#writeDemodReg(1, 1, 0x10, 1); } /** @@ -133,9 +189,9 @@ export function RtlCom(conn) { * @param {number} addr The device's address. * @param {number} reg The register number. */ - async function readI2CReg(addr, reg) { - await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg]).buffer); - return readReg(BLOCK.I2C, addr, 1); + async #readI2CReg(addr, reg) { + await this.#writeRegBuffer(RtlCom.BLOCK.I2C, addr, new Uint8Array([reg]).buffer); + return this.readRegister(RtlCom.BLOCK.I2C, addr, 1); } /** @@ -144,8 +200,8 @@ export function RtlCom(conn) { * @param {number} reg The register number. * @param {number} value The value to write. */ - async function writeI2CReg(addr, reg, value) { - await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg, value]).buffer); + async #writeI2CReg(addr, reg, value) { + await this.#writeRegBuffer(RtlCom.BLOCK.I2C, addr, new Uint8Array([reg, value]).buffer); } /** @@ -154,9 +210,9 @@ export function RtlCom(conn) { * @param {number} reg The register number. * @param {number} len The number of bytes to read. */ - async function readI2CRegBuffer(addr, reg, len) { - await writeRegBuffer(BLOCK.I2C, addr, new Uint8Array([reg]).buffer); - return readRegBuffer(BLOCK.I2C, addr, len); + async #readI2CRegBuffer(addr, reg, len) { + await this.#writeRegBuffer(RtlCom.BLOCK.I2C, addr, new Uint8Array([reg]).buffer); + return this.#readRegBuffer(RtlCom.BLOCK.I2C, addr, len); } /** @@ -165,11 +221,11 @@ export function RtlCom(conn) { * @param {number} reg The register number. * @param {ArrayBuffer} buffer The buffer to write. */ - async function writeI2CRegBuffer(addr, reg, buffer) { + async #writeI2CRegBuffer(addr, reg, buffer) { const data = new Uint8Array(buffer.byteLength + 1); data[0] = reg; data.set(new Uint8Array(buffer), 1); - await writeRegBuffer(BLOCK.I2C, addr, data.buffer); + await this.#writeRegBuffer(RtlCom.BLOCK.I2C, addr, data.buffer); } /** @@ -177,7 +233,7 @@ export function RtlCom(conn) { * @param {ArrayBuffer} buffer The buffer to decode. * @return {number} The decoded number. */ - function bufferToNumber(buffer) { + static bufferToNumber(buffer) { let len = buffer.byteLength; const dv = new DataView(buffer); if (len === 0) { @@ -199,7 +255,7 @@ export function RtlCom(conn) { * @param {number} len The number of bytes to encode into. * @param {boolean=} opt_bigEndian Whether to use a big-endian encoding. */ - function numberToBuffer(value, len, opt_bigEndian) { + static numberToBuffer(value, len, opt_bigEndian) { const buffer = new ArrayBuffer(len); const dv = new DataView(buffer); if (len === 1) { @@ -220,7 +276,7 @@ export function RtlCom(conn) { * @param {number} index The index field of the control message. * @param {number} length The number of bytes to read. */ - async function readCtrlMsg(value, index, length) { + async #readCtrlMsg(value, index, length) { const ti = { 'requestType': 'vendor', 'recipient': 'device', @@ -231,12 +287,12 @@ export function RtlCom(conn) { 'length': Math.max(8, length) }; try { - let data = await conn.controlTransfer(ti); + let data = await this.#conn.controlTransfer(ti); data = data.slice(0, length); - if (VERBOSE) { + if (RtlCom.VERBOSE) { console.log('IN value 0x' + value.toString(16) + ' index 0x' + index.toString(16)); - console.log(' read -> ' + dumpBuffer(data)); + console.log(' read -> ' + this.#dumpBuffer(data)); } return data; @@ -253,7 +309,7 @@ export function RtlCom(conn) { * @param {number} index The index field of the control message. * @param {ArrayBuffer} buffer The buffer to write to the device. */ - async function writeCtrlMsg(value, index, buffer) { + async #writeCtrlMsg(value, index, buffer) { const ti = { 'requestType': 'vendor', 'recipient': 'device', @@ -264,14 +320,14 @@ export function RtlCom(conn) { 'data': buffer }; try { - await conn.controlTransfer(ti); - if (VERBOSE) { + await this.#conn.controlTransfer(ti); + if (RtlCom.VERBOSE) { console.log('OUT value 0x' + value.toString(16) + ' index 0x' + - index.toString(16) + ' data ' + dumpBuffer(buffer)); + index.toString(16) + ' data ' + this.#dumpBuffer(buffer)); } } catch (error) { const msg = 'USB write failed (value 0x' + value.toString(16) + - ' index 0x' + index.toString(16) + ' data ' + dumpBuffer(buffer) + + ' index 0x' + index.toString(16) + ' data ' + this.#dumpBuffer(buffer) + ') message="' + error.message + '"'; throw new Error(msg); @@ -283,15 +339,15 @@ export function RtlCom(conn) { * @param {number} length The number of bytes to read. * @return {ArrayBuffer} The received buffer. */ - async function readBulk(length) { + async #readBulk(length) { const ti = { 'direction': 'in', 'endpoint': 1, 'length': length }; try { - const data = await conn.bulkTransfer(ti); - if (VERBOSE) { + const data = await this.#conn.bulkTransfer(ti); + if (RtlCom.VERBOSE) { console.log('IN BULK requested ' + length + ' received ' + data.byteLength); } return data; @@ -306,32 +362,32 @@ export function RtlCom(conn) { /** * Claims the USB interface. */ - async function claimInterface() { - await conn.claimInterface(0); + async #claimInterface() { + await this.#conn.claimInterface(0); } /** * Releases the USB interface. */ - async function releaseInterface() { - await conn.releaseInterface(0); + async #releaseInterface() { + await this.#conn.releaseInterface(0); } /** * Performs several write operations as specified in an array. * @param {Array.>} array The operations to perform. */ - async function writeEach(array) { + async writeEach(array) { for (const element of array) { - const line = element; - if (line[0] === CMD.REG) { - await writeReg(line[1], line[2], line[3], line[4]); - } else if (line[0] === CMD.REGMASK) { - await writeRegMask(line[1], line[2], line[3], line[4]); - } else if (line[0] === CMD.DEMODREG) { - await writeDemodReg(line[1], line[2], line[3], line[4]); - } else if (line[0] === CMD.I2CREG) { - await writeI2CReg(line[1], line[2], line[3]); + const line = element; + if (line[0] === RtlCom.CMD.REG) { + await this.writeRegister(line[1], line[2], line[3], line[4]); + } else if (line[0] === RtlCom.CMD.REGMASK) { + await this.writeRegMask(line[1], line[2], line[3], line[4]); + } else if (line[0] === RtlCom.CMD.DEMODREG) { + await this.#writeDemodReg(line[1], line[2], line[3], line[4]); + } else if (line[0] === RtlCom.CMD.I2CREG) { + await this.#writeI2CReg(line[1], line[2], line[3]); } else { throw new Error('Unsupported operation [' + line + ']'); } @@ -343,7 +399,7 @@ export function RtlCom(conn) { * @param {ArrayBuffer} buffer The buffer to display. * @return {string} The string representation of the buffer. */ - function dumpBuffer(buffer) { + #dumpBuffer(buffer) { const bytes = []; const arr = new Uint8Array(buffer); for (let i = 0; i < arr.length; ++i) { @@ -351,65 +407,4 @@ export function RtlCom(conn) { } return '[' + bytes + ']'; } - - - return { - writeRegister: writeReg, - readRegister: readReg, - writeRegMask: writeRegMask, - demod: { - readRegister: readDemodReg, - writeRegister: writeDemodReg - }, - i2c: { - open: openI2C, - close: closeI2C, - readRegister: readI2CReg, - writeRegister: writeI2CReg, - readRegBuffer: readI2CRegBuffer - }, - bulk: { - readBuffer: readBulk - }, - iface: { - claim: claimInterface, - release: releaseInterface - }, - writeEach: writeEach - }; } - -/** - * Commands for writeEach. - */ -const CMD = { - REG: 1, - REGMASK: 2, - DEMODREG: 3, - I2CREG: 4 -}; - -/** - * Register blocks. - */ -const BLOCK = { - DEMOD: 0x000, - USB: 0x100, - SYS: 0x200, - I2C: 0x600 -}; - -/** - * Device registers. - */ -const REG = { - SYSCTL: 0x2000, - EPA_CTL: 0x2148, - EPA_MAXPKT: 0x2158, - DEMOD_CTL: 0x3000, - DEMOD_CTL_1: 0x300b -}; - -RtlCom.CMD = CMD; -RtlCom.BLOCK = BLOCK; -RtlCom.REG = REG; From 14aa7c51f07337f9fba42e9b73aa160d6b085470 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 22:53:49 +0200 Subject: [PATCH 10/20] fix(RtlCom): Fix sub methods --- lib/rtlcom.js | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/lib/rtlcom.js b/lib/rtlcom.js index 7351971..bc425e8 100644 --- a/lib/rtlcom.js +++ b/lib/rtlcom.js @@ -68,23 +68,23 @@ export class RtlCom { } demod = { - readRegister: this.#readDemodReg, - writeRegister: this.#writeDemodReg + readRegister: this.#readDemodReg.bind(this), + writeRegister: this.#writeDemodReg.bind(this) } i2c = { - open: this.#openI2C, - close: this.#closeI2C, - readRegister: this.#readI2CReg, - writeRegister: this.#writeI2CReg, - readRegBuffer: this.#readI2CRegBuffer + open: this.#openI2C.bind(this), + close: this.#closeI2C.bind(this), + readRegister: this.#readI2CReg.bind(this), + writeRegister: this.#writeI2CReg.bind(this), + readRegBuffer: this.#readI2CRegBuffer.bind(this) } bulk = { - readBuffer: this.#readBulk + readBuffer: this.#readBulk.bind(this) } iface = { - claim: this.#claimInterface, - release: this.#releaseInterface - } + claim: this.#claimInterface.bind(this), + release: this.#releaseInterface.bind(this) + }; /** * Writes a buffer into a dongle's register. From 040191870d4be991108b0c7e57c74d11e803e15c Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Fri, 7 Oct 2022 23:15:46 +0200 Subject: [PATCH 11/20] fix(RTL2832U): Fix setCenterFrequency --- lib/rtl2832u.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/rtl2832u.js b/lib/rtl2832u.js index e7bfac7..4c709d1 100644 --- a/lib/rtl2832u.js +++ b/lib/rtl2832u.js @@ -197,7 +197,7 @@ export class RTL2832U { */ async setCenterFrequency(freq) { await this.#com.i2c.open(); - const actualFreq = this.#tuner.setFrequency(freq + RTL2832U.IF_FREQ); + const actualFreq = await this.#tuner.setFrequency(freq + RTL2832U.IF_FREQ); await this.#com.i2c.close(); return (actualFreq - RTL2832U.IF_FREQ); } From d94edc9df75ef63e46bef76126ebc0535890e953 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 14:48:34 +0200 Subject: [PATCH 12/20] refactor(RtlSdr): Return into class --- lib/rtlsdr.js | 103 ++++++++++++++++++++++++++++---------------------- 1 file changed, 58 insertions(+), 45 deletions(-) diff --git a/lib/rtlsdr.js b/lib/rtlsdr.js index b05d860..31da8c5 100644 --- a/lib/rtlsdr.js +++ b/lib/rtlsdr.js @@ -11,63 +11,76 @@ // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. -import {USB as usb} from './web-usb'; import {RTL2832U} from './rtl2832u'; -const FILTERS = [ - { - vendorId: 0x0bda, - productId: 0x2832 - }, - { - vendorId: 0x0bda, - productId: 0x2838 - } -]; +export class RtlSdr { + static FILTERS = [ + { + vendorId: 0x0bda, + productId: 0x2832 + }, + { + vendorId: 0x0bda, + productId: 0x2838 + } + ]; -export function RtlSdr(usbDevice) { - this._usbDevice = usbDevice; - this._rtl2832u = null; -} + #usbDevice; + #rtl2832u = null; -RtlSdr.prototype.open = async function (options) { - await this._usbDevice.open(); - await this._usbDevice.selectConfiguration(1); + constructor(usbDevice) { + this.#usbDevice = usbDevice; + } - this._rtl2832u = new RTL2832U(this._usbDevice, options.ppm, options.gain); + /** + * Use import {USB} from './web-usb'; or import {USB} from './usb' + * @param usb + * @returns {Promise<*>} + */ + static requestDevice = async function (usb) { + let usbDevice = await usb.requestDevice(RtlSdr.FILTERS); - await this._rtl2832u.open(); -}; + return new RtlSdr(usbDevice); + }; -RtlSdr.prototype.setSampleRate = async function (sampleRate) { - return this._rtl2832u.setSampleRate(sampleRate); -}; + /** + * Use import {USB} from './web-usb'; or import {USB} from './usb' + * @param usb + * @returns {Promise<*>} + */ + static getDevices = async function (usb) { + let usbDevices = await usb.getDevices(RtlSdr.FILTERS); -RtlSdr.prototype.setCenterFrequency = async function (centerFrequency) { - return this._rtl2832u.setCenterFrequency(centerFrequency); -}; + return usbDevices.map((usbDevice) => new RtlSdr(usbDevice)); + }; -RtlSdr.prototype.resetBuffer = async function () { - return this._rtl2832u.resetBuffer(); -}; + async open({ppm, gain}) { + await this.#usbDevice.open(); + await this.#usbDevice.selectConfiguration(1); -RtlSdr.prototype.readSamples = async function (length) { - return this._rtl2832u.readSamples(length); -}; + this.#rtl2832u = new RTL2832U(this.#usbDevice, ppm, gain); -RtlSdr.prototype.close = async function () { - await this._rtl2832u.close(); - await this._usbDevice.close(); -}; + await this.#rtl2832u.open(); + } -RtlSdr.requestDevice = async function () { - let usbDevice = await usb.requestDevice(FILTERS); + async setSampleRate(sampleRate) { + return this.#rtl2832u.setSampleRate(sampleRate); + } - return new RtlSdr(usbDevice); -}; + async setCenterFrequency(centerFrequency) { + return this.#rtl2832u.setCenterFrequency(centerFrequency); + } -RtlSdr.getDevices = async function () { - let usbDevices = await usb.getDevices(FILTERS); + async resetBuffer() { + return this.#rtl2832u.resetBuffer(); + } + + async readSamples(length) { + return this.#rtl2832u.readSamples(length); + } - return usbDevices.map((usbDevice) => new RtlSdr(usbDevice)); -}; + async close() { + await this.#rtl2832u.close(); + await this.#usbDevice.close(); + } +} From 080a6e606960036944bbe7d7bc7b87af093c01d1 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 15:06:04 +0200 Subject: [PATCH 13/20] refactor(RtlSdr): Return into class --- lib/rtlsdr.js | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/lib/rtlsdr.js b/lib/rtlsdr.js index 31da8c5..cce1d3b 100644 --- a/lib/rtlsdr.js +++ b/lib/rtlsdr.js @@ -37,22 +37,22 @@ export class RtlSdr { * @param usb * @returns {Promise<*>} */ - static requestDevice = async function (usb) { + static async requestDevice (usb) { let usbDevice = await usb.requestDevice(RtlSdr.FILTERS); return new RtlSdr(usbDevice); - }; + } /** * Use import {USB} from './web-usb'; or import {USB} from './usb' * @param usb * @returns {Promise<*>} */ - static getDevices = async function (usb) { + static async getDevices (usb) { let usbDevices = await usb.getDevices(RtlSdr.FILTERS); return usbDevices.map((usbDevice) => new RtlSdr(usbDevice)); - }; + } async open({ppm, gain}) { await this.#usbDevice.open(); From e004b49b43473aeec4adabfd8df0425c7d0e86e2 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 15:06:50 +0200 Subject: [PATCH 14/20] refactor(RtlCom): Boy scout rule --- lib/rtlcom.js | 35 ++++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-) diff --git a/lib/rtlcom.js b/lib/rtlcom.js index bc425e8..3694ba9 100644 --- a/lib/rtlcom.js +++ b/lib/rtlcom.js @@ -278,13 +278,13 @@ export class RtlCom { */ async #readCtrlMsg(value, index, length) { const ti = { - 'requestType': 'vendor', - 'recipient': 'device', - 'direction': 'in', - 'request': 0, - 'value': value, - 'index': index, - 'length': Math.max(8, length) + requestType: 'vendor', + recipient: 'device', + direction: 'in', + request: 0, + value, + index, + length: Math.max(8, length) }; try { let data = await this.#conn.controlTransfer(ti); @@ -311,13 +311,13 @@ export class RtlCom { */ async #writeCtrlMsg(value, index, buffer) { const ti = { - 'requestType': 'vendor', - 'recipient': 'device', - 'direction': 'out', - 'request': 0, - 'value': value, - 'index': index, - 'data': buffer + requestType: 'vendor', + recipient: 'device', + direction: 'out', + request: 0, + value, + index, + data: buffer }; try { await this.#conn.controlTransfer(ti); @@ -341,9 +341,9 @@ export class RtlCom { */ async #readBulk(length) { const ti = { - 'direction': 'in', - 'endpoint': 1, - 'length': length + direction: 'in', + endpoint: 1, + length: length }; try { const data = await this.#conn.bulkTransfer(ti); @@ -351,6 +351,7 @@ export class RtlCom { console.log('IN BULK requested ' + length + ' received ' + data.byteLength); } return data; + } catch (error) { const msg = 'USB bulk read failed (length 0x' + length.toString(16) + '), error="' + From bd90dae018ba9afa749ff10727441aa1b0ef5202 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 15:07:32 +0200 Subject: [PATCH 15/20] refactor(web-usb): Return into class --- lib/web-usb.js | 93 ++++++++++++++++++++++++++------------------------ 1 file changed, 48 insertions(+), 45 deletions(-) diff --git a/lib/web-usb.js b/lib/web-usb.js index 3c3cb57..a309f3f 100644 --- a/lib/web-usb.js +++ b/lib/web-usb.js @@ -12,62 +12,65 @@ // See the License for the specific language governing permissions and // limitations under the License. -export function USB(device) { - this._device = device; -} +export class USB { + #device; + + constructor(device) { + this.#device = device; + } -USB.prototype.open = async function() { - await this._device.open(); -}; + static async requestDevice(filters) { + const usbDevice = await navigator.usb.requestDevice({ + filters: filters + }); -USB.prototype.selectConfiguration = async function(configuration) { - await this._device.selectConfiguration(configuration); -}; + return new USB(usbDevice); + } -USB.prototype.claimInterface = async function(deviceInterface) { - await this._device.claimInterface(deviceInterface); -}; + static async getDevices(filters) { + const usbDevices = await navigator.usb.getDevices(); -USB.prototype.releaseInterface = async function(deviceInterface) { - await this._device.releaseInterface(deviceInterface); -}; + return usbDevices + .filter((usbDevice) => { + return filters.some(filter => filter.vendorId === usbDevice.vendorId && filter.productId === usbDevice.productId); + }) + .map(usbDevice => new USB(usbDevice)); + } -USB.prototype.controlTransfer = async function(ti) { - if (ti.direction === 'out') { - await this._device.controlTransferOut(ti, ti.data); - } else if (ti.direction === 'in') { - const result = await this._device.controlTransferIn(ti, ti.length); + async open() { + await this.#device.open(); + } - return result.data.buffer; - } -}; + async selectConfiguration(configuration) { + await this.#device.selectConfiguration(configuration); + } -USB.prototype.bulkTransfer = async function(ti) { - const result = await this._device.transferIn(ti.endpoint, ti.length); + async claimInterface(iface) { + await this.#device.claimInterface(iface); + } - return result.data.buffer; -}; + async releaseInterface(iface) { + await this.#device.releaseInterface(iface); + } -USB.prototype.close = async function() { - await this._device.close(); -}; + async controlTransfer(ti) { + if (ti.direction === 'out') { + await this.#device.controlTransferOut(ti, ti.data); -USB.requestDevice = async function(filters) { - const usbDevice = await navigator.usb.requestDevice({ - filters: filters - }); + } else if (ti.direction === 'in') { + const result = await this.#device.controlTransferIn(ti, ti.length); - return new USB(usbDevice); -}; + return result.data.buffer; + } + } -USB.getDevices = async function (filters) { - const usbDevices = await navigator.usb.getDevices(); + async bulkTransfer(ti) { + const result = await this.#device.transferIn(ti.endpoint, ti.length); - console.debug('USB devices', usbDevices); + return result.data.buffer; + } - return usbDevices - .filter((usbDevice) => { - return filters.some(filter => filter.vendorId === usbDevice.vendorId && filter.productId === usbDevice.productId); - }) - .map(usbDevice => new USB(usbDevice)); -}; + async close() { + await this.#device.close(); + } +} From 33c6137bb64a93f65adbe7a7160ec86b6d35c950 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 15:07:54 +0200 Subject: [PATCH 16/20] refactor(usb): Return into class --- lib/usb.js | 248 +++++++++++++++++++++++++++-------------------------- 1 file changed, 125 insertions(+), 123 deletions(-) diff --git a/lib/usb.js b/lib/usb.js index 60a5efb..cff882f 100644 --- a/lib/usb.js +++ b/lib/usb.js @@ -12,136 +12,138 @@ // See the License for the specific language governing permissions and // limitations under the License. -const usb = require('usb'); +import {usb as nodejsUsb} from 'usb'; -function USB(device) { - this._device = device; -} +export class USB { + #device; + #iface; + + constructor(device) { + this.#device = device; + } + + static async requestDevice(filters) { + return new Promise((resolve, reject) => { + for (let i = 0; i < filters.length; i++) { + const filter = filters[i]; + + const usbDevice = nodejsUsb.findByIds(filter.vendorId, filter.productId); + + if (usbDevice) { + return resolve(new USB(usbDevice)); + } + } + + reject(new Error('No devices found!')); + }); + } + + static async getDevices(filters) { + return new Promise((resolve) => { + const usbDevices = nodejsUsb.getDeviceList(); + + const devices = usbDevices + .filter((usbDevice) => { + return filters.some(filter => filter.vendorId === usbDevice.vendorId && filter.productId === usbDevice.productId); + }) + .map(usbDevice => new USB(usbDevice)); + + resolve(devices); + }); + } + + async open() { + return new Promise((resolve) => { + this.#device.open(); + + resolve(); + }); + } + + async selectConfiguration(configuration) { + return new Promise((resolve, reject) => { + this.#device.setConfiguration(configuration, (err) => { + if (err) { + return reject(err); + } -USB.prototype.open = async function() { - return new Promise((resolve) => { - this._device.open(); - - resolve(); - }); -}; - -USB.prototype.selectConfiguration = async function(configuration) { - return new Promise((resolve, reject) => { - this._device.setConfiguration(configuration, (err) => { - if (err) { - return reject(err); - } - - resolve(); - }); - }); -}; - -USB.prototype.claimInterface = async function(interface) { - return new Promise((resolve) => { - this._device.interface(interface).claim(); - this._interface = interface; - - resolve(); - }); -}; - -USB.prototype.releaseInterface = async function(interface) { - return new Promise((resolve) => { - this._device.interface(interface).release((error) => { - if (error) { - return reject(error); - } - - resolve(); - }); - }); -}; - -USB.prototype.controlTransfer = async function(ti) { - return new Promise((resolve, reject) => { - let requestType = 0; - let lengthOrData = ti.length ? ti.length : Buffer.from(ti.data); - - if (ti.requestType === 'vendor') { - requestType |= usb.LIBUSB_REQUEST_TYPE_VENDOR; + resolve(); + }); + }); } - if (ti.recipient === 'device') { - requestType |= usb.LIBUSB_RECIPIENT_DEVICE; + async claimInterface(iface) { + return new Promise((resolve) => { + this.#device.iface(iface).claim(); + this.#iface = iface; + + resolve(); + }); } - if (ti.direction === 'out') { - requestType |= usb.LIBUSB_ENDPOINT_OUT; - } else if (ti.direction === 'in') { - requestType |= usb.LIBUSB_ENDPOINT_IN; + async releaseInterface(iface) { + return new Promise((resolve, reject) => { + this.#device.iface(iface) + .release((error) => { + if (error) { + return reject(error); + } + + resolve(); + }); + }); + } + + async controlTransfer(ti) { + return new Promise((resolve, reject) => { + let requestType = 0; + let lengthOrData = ti.length ? ti.length : Buffer.from(ti.data); + + if (ti.requestType === 'vendor') { + requestType |= nodejsUsb.LIBUSB_REQUEST_TYPE_VENDOR; + } + + if (ti.recipient === 'device') { + requestType |= nodejsUsb.LIBUSB_RECIPIENT_DEVICE; + } + + if (ti.direction === 'out') { + requestType |= nodejsUsb.LIBUSB_ENDPOINT_OUT; + + } else if (ti.direction === 'in') { + requestType |= nodejsUsb.LIBUSB_ENDPOINT_IN; + } + + this.#device.controlTransfer(requestType, ti.request, ti.value, ti.index, lengthOrData, (err, data) => { + if (err) { + return reject(err); + } + + if (data) { + return resolve(Uint8Array.from(data).buffer); + } + + resolve(); + }); + }); } - this._device.controlTransfer(requestType, ti.request, ti.value, ti.index, lengthOrData, (err, data) => { - if (err) { - return reject(err); - } - - if (data) { - return resolve(Uint8Array.from(data).buffer); - } - - resolve(); - }); - }); -}; - -USB.prototype.bulkTransfer = async function(ti) { - return new Promise((resolve, reject) => { - this._device.interface(this._interface).endpoints[ti.endpoint - 1].transfer(ti.length, (err, data) => { - if (err) { - return reject(err); - } - - resolve(data.buffer); - }); - }); -}; - -USB.prototype.close = async function() { - return new Promise((resolve) => { - this._device.close(resolve); - }); -}; - -USB.requestDevice = async function(filters) { - return new Promise((resolve, reject) => { - for (let i = 0; i < filters.length; i++) { - const filter = filters[i]; - - const usbDevice = usb.findByIds(filter.vendorId, filter.productId); - - if (usbDevice) { - return resolve(new USB(usbDevice)); - } + async bulkTransfer(ti) { + return new Promise((resolve, reject) => { + this.#device.iface(this.#iface).endpoints[ti.endpoint - 1] + .transfer(ti.length, (err, data) => { + if (err) { + return reject(err); + } + + resolve(data.buffer); + }); + }); } - reject(new Error('No devices found!')); - }); -}; - -USB.getDevices = async function(filters) { - return new Promise((resolve) => { - const usbDevices = usb.getDeviceList(); - const devices = []; - - usbDevices.forEach((usbDevice) => { - filters.forEach((filter) => { - if (filter.vendorId === usbDevice.deviceDescriptor.idVendor && - filter.productId === usbDevice.deviceDescriptor.idProduct) { - devices.push(new USB(usbDevice)); - } - }); - }); - - resolve(devices); - }); -}; - -module.exports = USB; + async close() { + return new Promise((resolve) => { + this.#device.close(resolve); + }); + } +} From 3add08268c328acc4a506985b9d37d2b94a27031 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 15:08:32 +0200 Subject: [PATCH 17/20] refactor(usb): Add usb classes, needed to start the RtlSdr --- index.js | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/index.js b/index.js index 20c1a72..84618b2 100644 --- a/index.js +++ b/index.js @@ -1,3 +1,5 @@ -import {RtlSdr} from './lib/rtlsdr' +import {RtlSdr} from './lib/rtlsdr'; +import {USB as webUsb} from './lib/web-usb'; +import {USB as nodejsUsb} from './lib/usb'; -export {RtlSdr}; +export {RtlSdr, webUsb, nodejsUsb}; From 10402d11e1e7284996c333beed5f4d33f931d0a7 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 15:15:27 +0200 Subject: [PATCH 18/20] docs(README): Update setup and usage --- README.md | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/README.md b/README.md index 8827e7c..28c88fa 100644 --- a/README.md +++ b/README.md @@ -21,17 +21,17 @@ Supports [Node.js](https://nodejs.org/) and [WebUSB](https://wicg.github.io/webu Install: `npm i rtlsdrjs` -Require: `const RtlSdr = require('rtlsdrjs');` +Import: `import {RtlSdr, nodejsUsb} from 'rtlsdrjs';` ### Browser -Download a `rtlsdr.js` build from a [release](https://github.com/sandeepmistry/rtlsdrjs/releases). - -Include `rtlsdr.js` in you HTML page: `` +Import: `import {RtlSdr, webUsb} from 'rtlsdrjs';` ## Usage ```javascript +import {RtlSdr, webUsb} from 'rtlsdrjs'; + let readSamples = true; async function start() { @@ -42,7 +42,7 @@ async function start() { // // RtlSdr.getDevices() can be used to get a list of all RTL SDR's attached to system // - const sdr = await RtlSdr.requestDevice(); + const sdr = await RtlSdr.requestDevice(usb); // // open the device From d9e2b88902976892a79bb0b8dcb8b4768820b79c Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 15:19:15 +0200 Subject: [PATCH 19/20] docs(README): Update setup and usage --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 28c88fa..17aa418 100644 --- a/README.md +++ b/README.md @@ -12,7 +12,7 @@ Supports [Node.js](https://nodejs.org/) and [WebUSB](https://wicg.github.io/webu ### Software -* [Node.js](https://nodejs.org/) 8.x or later + [node-usb requirements](https://github.com/tessel/node-usb#installation) +* [Node.js](https://nodejs.org/) v14.13.0 or later + [node-usb requirements](https://github.com/tessel/node-usb#installation) * [Web browser that supports WebUSB](https://caniuse.com/#feat=webusb) ## Setup From d4b659c63a76ab0531c1ee6220f297c55b4f82f9 Mon Sep 17 00:00:00 2001 From: Peter Ahlers Date: Sun, 9 Oct 2022 15:20:38 +0200 Subject: [PATCH 20/20] feat(package): Update to version v14 --- package-lock.json | 2906 +-------------------------------------------- package.json | 12 +- 2 files changed, 33 insertions(+), 2885 deletions(-) diff --git a/package-lock.json b/package-lock.json index 7606825..437cc38 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,2417 +1,50 @@ { "name": "rtlsdrjs", - 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"browser": { - "./lib/usb.js": "./lib/web-usb.js" + "engines": { + "node": ">=14.13.0" } }