ESP32-C3 support #442

sh-user · 2021-11-12T23:57:40Z

ESP32-C3
RISC-V processor (RV32IMC)
I am getting compile error, is there a solution to the problem?

C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputULP.cpp:24:10: fatal error: esp32/ulp.h: No such file or directory
 #include <esp32/ulp.h>
          ^~~~~~~~~~~~~
compilation terminated.

The text was updated successfully, but these errors were encountered:

NoNamedCat · 2021-11-19T03:15:39Z

The ESP32-C3 don't have the ULP (Ultra low processor) that is "another core" in the ESP32... Bitluni made the ULP sound driver that is .h header file problen in the compiler log that you posted. I'm not going to tell you how you can solve that but i think that is a glimple for what you can do. :)
Don't use the "AudioOutputULP" with the ESP32-C3 because it does not have an ULP.
(Sorry about my english)

FedericoBusero · 2021-11-28T22:16:50Z

Making it compile for ESP32-C3 needs more effort

AudioOutputULP.cpp :

Replace #ifdef ESP32 by

#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3

uint32_t and size_t is not the same on RISC-V:
AudioFileSource SPIRAMBuffer.cpp
uint32_t toReadFromBuffer = std::min(len, (uint32_t)(writePtr - readPtr));
AudioOutputSPDIF.cpp:269:
size_t bytes_written;
before
esp_err_t ret = i2s_write((i2s_port_t)portNo, (const char*)&buf, 8 * channels, &bytes_written, 0);

also check calls to (mixing int and FLAC__bitreader_read_raw_int32)
FLAC__bitreader_read_raw_int32

Also ESP32-C3 lacks an internal DAC
AudioOutputI2S.cpp:

      if (output_mode == INTERNAL_DAC)
      {
#ifdef I2S_MODE_DAC_BUILT_IN
        mode = (i2s_mode_t)(mode | I2S_MODE_DAC_BUILT_IN);
#else
 	    return false;
#endif
      } 
      else if (output_mode == INTERNAL_PDM)
      {
#ifdef I2S_MODE_PDM
        mode = (i2s_mode_t)(mode | I2S_MODE_PDM);
#else
	    return false;
#endif
      }

...

      if (output_mode == INTERNAL_DAC || output_mode == INTERNAL_PDM)
      {
#ifdef I2S_DAC_CHANNEL_BOTH_EN
        i2s_set_pin((i2s_port_t)portNo, NULL);
        i2s_set_dac_mode(I2S_DAC_CHANNEL_BOTH_EN);
#else
	    return false;
#endif
      }

FedericoBusero · 2021-11-28T22:20:49Z

Please re-open this issue

sh-user · 2021-11-28T22:27:31Z

@FedericoBusero Thank you for your interest in this issue, I will try to run

sh-user · 2021-12-05T23:13:55Z

Arduino 1.8.13
ESP8266Audio library 1.9.4
Example StreamMP3FromHTTP.ino does not compile

C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioFileSourceICYStream.cpp:23: warning: "_GNU_SOURCE" redefined
 #define _GNU_SOURCE
 
<command-line>: note: this is the location of the previous definition
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputI2S.cpp: In member function 'bool AudioOutputI2S::begin(bool)':
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputI2S.cpp:186:56: warning: 'I2S_COMM_FORMAT_I2S' is deprecated [-Wdeprecated-declarations]
       i2s_comm_format_t comm_fmt = (i2s_comm_format_t)(I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB);
                                                        ^~~~~~~~~~~~~~~~~~~
In file included from C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/driver/include/driver/i2s.h:16,
                 from C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputI2S.cpp:23:
C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/hal/include/hal/i2s_types.h:95:5: note: declared here
     I2S_COMM_FORMAT_I2S       __attribute__((deprecated)) = 0x01, /*!< I2S communication format I2S, correspond to `I2S_COMM_FORMAT_STAND_I2S`*/
     ^~~~~~~~~~~~~~~~~~~
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputI2S.cpp:186:78: warning: 'I2S_COMM_FORMAT_I2S_MSB' is deprecated [-Wdeprecated-declarations]
       i2s_comm_format_t comm_fmt = (i2s_comm_format_t)(I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB);
                                                                              ^~~~~~~~~~~~~~~~~~~~~~~
In file included from C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/driver/include/driver/i2s.h:16,
                 from C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputI2S.cpp:23:
C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/hal/include/hal/i2s_types.h:96:5: note: declared here
     I2S_COMM_FORMAT_I2S_MSB   __attribute__((deprecated)) = 0x01, /*!< I2S format MSB, (I2S_COMM_FORMAT_I2S |I2S_COMM_FORMAT_I2S_MSB) correspond to `I2S_COMM_FORMAT_STAND_I2S`*/
     ^~~~~~~~~~~~~~~~~~~~~~~
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputI2S.cpp:189:39: warning: 'I2S_COMM_FORMAT_I2S_MSB' is deprecated [-Wdeprecated-declarations]
         comm_fmt = (i2s_comm_format_t)I2S_COMM_FORMAT_I2S_MSB;
                                       ^~~~~~~~~~~~~~~~~~~~~~~
In file included from C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/driver/include/driver/i2s.h:16,
                 from C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputI2S.cpp:23:
C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/hal/include/hal/i2s_types.h:96:5: note: declared here
     I2S_COMM_FORMAT_I2S_MSB   __attribute__((deprecated)) = 0x01, /*!< I2S format MSB, (I2S_COMM_FORMAT_I2S |I2S_COMM_FORMAT_I2S_MSB) correspond to `I2S_COMM_FORMAT_STAND_I2S`*/
     ^~~~~~~~~~~~~~~~~~~~~~~
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputSPDIF.cpp: In constructor 'AudioOutputSPDIF::AudioOutputSPDIF(int, int, int)':
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputSPDIF.cpp:97:49: warning: 'I2S_COMM_FORMAT_I2S' is deprecated [-Wdeprecated-declarations]
     .communication_format = (i2s_comm_format_t)(I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB),
                                                 ^~~~~~~~~~~~~~~~~~~
In file included from C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/driver/include/driver/i2s.h:16,
                 from C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputSPDIF.cpp:44:
C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/hal/include/hal/i2s_types.h:95:5: note: declared here
     I2S_COMM_FORMAT_I2S       __attribute__((deprecated)) = 0x01, /*!< I2S communication format I2S, correspond to `I2S_COMM_FORMAT_STAND_I2S`*/
     ^~~~~~~~~~~~~~~~~~~
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputSPDIF.cpp:97:71: warning: 'I2S_COMM_FORMAT_I2S_MSB' is deprecated [-Wdeprecated-declarations]
     .communication_format = (i2s_comm_format_t)(I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB),
                                                                       ^~~~~~~~~~~~~~~~~~~~~~~
In file included from C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/driver/include/driver/i2s.h:16,
                 from C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\AudioOutputSPDIF.cpp:44:
C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.1/tools/sdk/esp32c3/include/hal/include/hal/i2s_types.h:96:5: note: declared here
     I2S_COMM_FORMAT_I2S_MSB   __attribute__((deprecated)) = 0x01, /*!< I2S format MSB, (I2S_COMM_FORMAT_I2S |I2S_COMM_FORMAT_I2S_MSB) correspond to `I2S_COMM_FORMAT_STAND_I2S`*/
     ^~~~~~~~~~~~~~~~~~~~~~~
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\libflac\stream_decoder.c: In function 'read_residual_partitioned_rice_':
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\libflac\stream_decoder.c:2786:82: warning: passing argument 2 of 'FLAC__bitreader_read_rice_signed_block' from incompatible pointer type [-Wincompatible-pointer-types]
    if(!FLAC__bitreader_read_rice_signed_block(decoder->private_->input, residual + sample, u, rice_parameter))
                                                                         ~~~~~~~~~^~~~~~~~
In file included from C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\libflac\stream_decoder.c:48:
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\libflac\private/bitreader.h:84:76: note: expected 'int *' but argument is of type 'FLAC__int32 *' {aka 'long int *'}
 FLAC__bool FLAC__bitreader_read_rice_signed_block(FLAC__BitReader *br, int vals[], uint32_t nvals, uint32_t parameter);
                                                                        ~~~~^~~~~~
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\libflac\stream_decoder.c:2795:66: warning: passing argument 2 of 'FLAC__bitreader_read_raw_int32' from incompatible pointer type [-Wincompatible-pointer-types]
     if(!FLAC__bitreader_read_raw_int32(decoder->private_->input, &i, rice_parameter))
                                                                  ^~
In file included from C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\libflac\stream_decoder.c:48:
C:\Users\Alex1\Documents\Arduino\libraries\ESP8266Audio\src\libflac\private/bitreader.h:76:77: note: expected 'FLAC__int32 *' {aka 'long int *'} but argument is of type 'int *'
 FLAC__bool FLAC__bitreader_read_raw_int32(FLAC__BitReader *br, FLAC__int32 *val, uint32_t bits);
                                                                ~~~~~~~~~~~~~^~~
fork/exec C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\tools\esptool_py\3.1.0/esptool.exe: This version of %1 is not compatible with the version of Windows you're running. Check your computer's system information and then contact the software publisher.
Error compiling for board ESP32C3 Dev Module.

FedericoBusero · 2021-12-06T20:16:30Z

I see a lot of warnings that are perfectly normal: these are things that can be improved in the code. The last lines are the wrong ones:

fork/exec C:\Users\Alex1\AppData\Local\Arduino15\packages\esp32\tools\esptool_py\3.1.0/esptool.exe: This version of %1 is not compatible with the version of Windows you're running. Check your computer's system information and then contact the software publisher.
Error compiling for board ESP32C3 Dev Module.

I think you first need to check if you can upload anything (Hello World, Blink...) on the ESP32C3. Check that you use the latest ESP32 Arduino board package or maybe you need to update to a newer Arduino IDE?

P.S.: The warnings are related to

new API for I2S since IDF 4.2. But they don't impact StreamMP3FromHTTP.ino when run on ESP32C3
It is rather straightforward to change to code the get rid of this warning, but I first want to check compatibility with ESP32, different versions of IDF, ...
FLAC, which is of course no used in StreamMP3FromHTTP.ino

sh-user · 2021-12-07T20:53:55Z

The problem is esptool, does not work on 32 bit Windows, only on 64 bit

sh-user · 2021-12-08T15:21:34Z

Example PlayWAVFromPROGMEM compiles normally, but gives an error to the console

ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0x484
load:0x403ce000,len:0x90c
load:0x403d0000,len:0x2398
SHA-256 comparison failed:
Calculated: e0c357829f601add6a50d6ea19f89687ec5acf531610506a38b33d09b4a71c7e
Expected: 77332826ec7bc491df854452f675071e3a094e80858dd7d91dd7e27940204216
Attempting to boot anyway...
entry 0x403ce000
WAV start
+0 0x3fc92d04
E (1205) I2S: i2s_set_pin(294): bck_io_num invalid
WAV done
WAV done
WAV done

sh-user · 2021-12-08T16:12:53Z

found info for ESP32-C3

#elif CONFIG_IDF_TARGET_ESP32C3
// TODO: change contacts
#define MASTER_BCK_IO 4
#define MASTER_WS_IO 5
#define SLAVE_BCK_IO 14
#define SLAVE_WS_IO 15
#define DATA_IN_IO 19
#define DATA_OUT_IO 18
#define I2S0_DATA_OUT_IDX I2SO_SD_OUT_IDX
#define I2S0_DATA_IN_IDX I2SI_SD_IN_IDX

I think I need to change AudioOutputI2S.cpp

bclkPin = 26;
wclkPin = 25;
doutPin = 22;

sh-user · 2021-12-12T21:27:00Z

i tried to change

bclkPin = 4;
wclkPin = 5;
doutPin = 18;

bclkPin = 14;
wclkPin = 15;
doutPin = 18;

but the sound could not be received, maybe I'm doing something wrong

FedericoBusero · 2021-12-13T18:37:03Z

The test environment in which I developped the ESP32C3 code:

ESP Module: ESP32-C3-01M / ESP32-C3-14
The pins you are using are indeed the ones that are specified in the documentation (but in theory all GPIO pins should work as I understand it). Those pins 4/5/18 do work on ESP32-C3-01M but on my ESP32-C3-14, pin 4 doesn't seem work for I2S use. Pins 6/5/18 work on all my chips, but in the example code I used 6/7/10.
Arduino ESP32 Core version : 2.0.1
This is really important: earlier versions even don't compile the code for ESP32-C3 when using I2S. What is strange is that when trying to make applications for ESP32, you can't use version 2.0.1 when using I2S, because this version is buggy: it worked until 2.0.0rc2. But for ESP32C3 you really need to use 2.0.1
I2S module: MAX98357A
comm_fmt=I2S_COMM_FORMAT_STAND_I2S in AudioOutputI2S.cpp
Remark that I created a pull request because the first version compiled, but some things were not perfect:

#461

- #ifdef I2S_MODE_PDM/I2S_MODE_DAC_BUILT_IN doesn't work because these are enum's which cannot be used by the preprocessor. I replaced them with #if CONFIG_IDF_TARGET_ESP32
- comm_fmt should be I2S_COMM_FORMAT_STAND_I2S according to the documentation, so I changed following lines in AudioOutputI2S.cpp

#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 2, 0)
        comm_fmt = (i2s_comm_format_t) (I2S_COMM_FORMAT_STAND_I2S);
#else
        comm_fmt = (i2s_comm_format_t) (I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB);
#endif

The source code of the test program looks like this:

#include "AudioFileSourcePROGMEM.h"
#include "AudioGeneratorRTTTL.h"
#include "AudioOutputI2S.h"

#define I2S_SPEAKER_SERIAL_CLOCK GPIO_NUM_6 // BCLK
#define I2S_SPEAKER_LEFT_RIGHT_CLOCK GPIO_NUM_7 // WSEL,LRC 
#define I2S_SPEAKER_SERIAL_DATA GPIO_NUM_10 // DIN

const char rudolph[] PROGMEM = 
"Rudolph the Red Nosed Raindeer:d=8,o=5,b=250:g,4a,g,4e,4c6,4a,2g.,g,a,g,a,4g,4c6,2b.,4p,f,4g,f,4d,4b,4a,2g.,g,a,g,a,4g,4a,2e.,4p,g,4a,a,4e,4c6,4a,2g.,g,a,g,a,4g,4c6,2b.,4p,f,4g,f,4d,4b,4a,2g.,g,a,g,a,4g,4d6,2c.6,4p,4a,4a,4c6,4a,4g,4e,2g,4d,4e,4g,4a,4b,4b,2b,4c6,4c6,4b,4a,4g,4f,2d,g,4a,g,4e,4c6,4a,2g.,g,a,g,a,4g,4c6,2b.,4p,f,4g,f,4d,4b,4a,2g.,4g,4a,4g,4a,2g,2d6,1c.6.";

AudioGeneratorRTTTL *rtttl;
AudioFileSourcePROGMEM *file;
AudioOutputI2S *out;

void setup()
{
  Serial.begin(115200);
  delay(1000);

  Serial.printf("RTTTL start\n");

  audioLogger = &Serial;
  file = new AudioFileSourcePROGMEM( rudolph, strlen_P(rudolph) );
  out = new AudioOutputI2S();
  out -> SetPinout(I2S_SPEAKER_SERIAL_CLOCK,I2S_SPEAKER_LEFT_RIGHT_CLOCK,I2S_SPEAKER_SERIAL_DATA);
  rtttl = new AudioGeneratorRTTTL();
  rtttl->begin(file, out);
}

void loop()
{
  if (rtttl->isRunning()) {
    if (!rtttl->loop()) rtttl->stop();
  } else {
    Serial.printf("RTTTL done\n");
    delay(1000);
  }
}

sh-user · 2021-12-13T21:16:22Z

@FedericoBusero thanks i checked this example on ESP32-C3-12F (C3FN4), options 4/5/18, 6/5/18, 6/7/10 work!
My mistake is that I connected the speaker to RX like ESP8266

sh-user · 2021-12-18T20:50:39Z

Checked AudioGeneratorMP3 using out->SetPinout() works fine.
There is a problem with starting AudioGeneratorAAC, I get a cyclic reset.

Source code:

#include <Arduino.h>
#include <WiFi.h>
#include "AudioFileSourceICYStream.h"
#include "AudioFileSourceBuffer.h"
#include "AudioGeneratorAAC.h"
#include "AudioOutputI2SNoDAC.h"

#define I2S_SPEAKER_SERIAL_CLOCK GPIO_NUM_6       // BCLK
#define I2S_SPEAKER_LEFT_RIGHT_CLOCK GPIO_NUM_7   // WSEL,LRC 
#define I2S_SPEAKER_SERIAL_DATA GPIO_NUM_10       // DIN

const int preallocateBufferSize = 16*1024;
const int preallocateCodecSize = 85332;      //AAC+SBR codec max mem needed
void *preallocateBuffer = NULL;
void *preallocateCodec = NULL;

const char *ssid = "********";
const char *password = "********";
const char *URL="http://ice23.securenetsystems.net/KARP";

AudioGenerator *aac = NULL;
AudioFileSourceICYStream *file = NULL;
AudioFileSourceBuffer *buff = NULL;
AudioOutputI2SNoDAC *out = NULL;

void setup() {
  Serial.begin(115200);
  Serial.println("Connecting to WiFi");
  WiFi.disconnect();
  WiFi.softAPdisconnect(true);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    Serial.println("...Connecting to WiFi");
    delay(1000);
  }
  Serial.println("Connected");

  file = new AudioFileSourceICYStream(URL);
  buff = new AudioFileSourceBuffer(file, preallocateBuffer, preallocateBufferSize);
  out = new AudioOutputI2SNoDAC();
  out->SetPinout(I2S_SPEAKER_SERIAL_CLOCK,I2S_SPEAKER_LEFT_RIGHT_CLOCK,I2S_SPEAKER_SERIAL_DATA);
  aac = new AudioGeneratorAAC(preallocateCodec, preallocateCodecSize);
  aac->begin(buff, out);
}

void loop() {
  static int lastms = 0;
  if (aac->isRunning()) {
    if (millis()-lastms > 1000) {
      lastms = millis();
      Serial.printf("Running for %d ms...\n", lastms);
      Serial.flush();
     }
    if (!aac->loop()) aac->stop();
  } else {
    Serial.printf("AAC done\n");
    delay(1000);
  }
}

Connecting to WiFi
...Connecting to WiFi
...Connecting to WiFi
...Connecting to WiFi
...Connecting to WiFi
Connected
Guru Meditation Error: Core  0 panic'ed (Store access fault). Exception was unhandled.

Core  0 register dump:
MEPC    : 0x40058924  RA      : 0x40058978  SP      : 0x3fc9b720  GP      : 0x3fc8da00  
TP      : 0x3fc7d184  T0      : 0x42004f7c  T1      : 0x0000000f  T2      : 0xffffffff  
S0/FP   : 0x3fc9b748  S1      : 0x00001640  A0      : 0x00001644  A1      : 0x00000000  
A2      : 0x0000005c  A3      : 0x4005897c  A4      : 0x00001644  A5      : 0x00000004  
A6      : 0x00000000  A7      : 0x00000000  S2      : 0x3fc9b74c  S3      : 0x00000000  
S4      : 0x00000000  S5      : 0x00000000  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x7fffffff  T4      : 0x00000000  T5      : 0x0ccccccc  T6      : 0x00000019  
MSTATUS : 0x00001881  MTVEC   : 0x40380001  MCAUSE  : 0x00000007  MTVAL   : 0x0000164f  
MHARTID : 0x00000000  

Stack memory:
3fc9b720: 0x3fca482c 0x3fc8d590 0x3fca486c 0x00000000 0x00013714 0x00001640 0x3fca508c 0x42004844
3fc9b740: 0x00000000 0x00000000 0x000136b4 0x00001640 0x3fca5038 0x3fc94888 0x3fca508c 0x42003fb4
3fc9b760: 0x3fca508c 0x3fc94888 0x3fc94880 0x42000204 0x00000000 0x3fc95000 0x42012000 0x42013d6a
3fc9b780: 0x00000000 0x00000000 0x00000000 0x403894ac 0x00000000 0x00000000 0x00000000 0x00000000
3fc9b7a0: 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0x27146414 0x01010107 0x00000001 0x00000000
3fc9b7c0: 0x43500000 0xffffffff 0x7fefffff 0x00000000 0x3fc00000 0x00000000 0x40300000 0x00000000
3fc9b7e0: 0x3fe00000 0x00000000 0x3ff80000 0x636f4361 0x3fd287a7 0x8b60c8b3 0x3fc68a28 0x509f79fb
3fc9b800: 0x3fd34413 0x00000000 0x3ff00000 0x00000000 0x40240000 0x00000000 0x401c0000 0x00000000
3fc9b820: 0x40140000 0x00000010 0x00000000 0x00527a03 0xa5a5a5a5 0xa5a5a5a5 0x00000154 0x3fc9b580
3fc9b840: 0x00001272 0x3fc91a7c 0x3fc91a7c 0x3fc9b83c 0x3fc91a74 0x00000018 0x3fca4c7c 0x3fca4c7c
3fc9b860: 0x3fc9b83c 0x00000000 0x00000001 0x3fc99838 0x706f6f6c 0x6b736154 0xfed13000 0x00d83ca7
3fc9b880: 0x00000000 0x3fc9b830 0x00000001 0x00000000 0x3fca072c 0x4201dd5a 0x0000000b 0x3fc95d7c
3fc9b8a0: 0x3fc95de4 0x3fc95e4c 0x00000000 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000
3fc9b8c0: 0x4207d65e 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9b8e0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9b900: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9b920: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9b940: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9b960: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9b980: 0x00000000 0x00000000 0x00000000 0x3fc90000 0x00000054 0x00000000 0x3fc9b994 0x00000000
3fc9b9a0: 0x00000000 0x00000000 0x3fc9b9ac 0xffffffff 0x3fc9b9ac 0x3fc9b9ac 0x00000000 0x3fc9b9c0
3fc9b9c0: 0xffffffff 0x3fc9b9c0 0x3fc9b9c0 0x00000001 0x00000001 0x00000000 0x8000ffff 0x00000000
3fc9b9e0: 0x92ed1005 0x3fc9b98c 0x00000100 0x00000000 0x00000000 0x3fc9625c 0x00000000 0x00000000
3fc9ba00: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9ba20: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9ba40: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9ba60: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9ba80: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9baa0: 0x00000000 0x0000000a 0x3fc9bf9c 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fc9bac0: 0x00000000 0x00000000 0x00000000 0x00000000 0x3fc9baf0 0x00000000 0x3fc9be3c 0x3fc9bde4
3fc9bae0: 0x3fc9bf44 0x3fc9beec 0x3fc9be94 0x000000ec 0x00000200 0x00000200 0x00000002 0x40386660
3fc9bb00: 0x4038615e 0x40385a5a 0x40386604 0x403865e8 0x3fc9bbe0 0x3fc9bbe0 0x3fc9bbe0 0x3fc9bbe0



ELF file SHA256: 0000000000000000

Rebooting...

FedericoBusero · 2021-12-18T22:07:26Z

In the example code, following lines are in the setup function

  // First, preallocate all the memory needed for the buffering and codecs, never to be freed
  preallocateBuffer = malloc(preallocateBufferSize);
  preallocateCodec = malloc(preallocateCodecSize);
  if (!preallocateBuffer || !preallocateCodec) {
    Serial.begin(115200);
    Serial.printf_P(PSTR("FATAL ERROR:  Unable to preallocate %d bytes for app\n"), preallocateBufferSize+preallocateCodecSize);
    while (1) delay(1000); // Infinite halt
  }

sh-user · 2021-12-19T00:56:44Z

Use malloc worked, but a hiss is heard instead of a sound. I have tested different flow rates.

FedericoBusero · 2021-12-19T14:23:53Z

I could reproduce the problem, it is situated in the AAC-decoder library which is not yet RISC-V compatible. You can make it work by replacing

#ifdef __XTENSA__		
		unsigned int lo32;
		signed int   hi32;
#else

by

#if defined(__XTENSA__) || defined (__riscv)
		unsigned int lo32;
		signed int   hi32;
#else

in libhelix-aac/assembly.h

But maybe, a new section for RISC-V should be created, inspired by
ultraembedded/libhelix-mp3@0a0e067

sh-user · 2021-12-19T16:03:32Z

works, but you can hear a slowdown in the playback speed by about two times, probably somewhere there is an offset

earlephilhower · 2021-12-19T19:23:03Z

@FedericoBusero would you like to do a PR for that fix? I don't have a RISC-V based chip to work with myself...

FedericoBusero · 2021-12-19T19:55:12Z

I'll do a PR. I just compared some implementations of the same functions to see which are the fastest, but the ones in libhelix-mp3 are slower.
The problem about the playback speed, I guess, is not a bug but just too slow performance of the chip: when the audio has no ticks, the sound is at the correct speed. But if there are a lot of ticks because of slow speed, playback becomes too slow. Maybe the wifi-implementation is not fully optimised yet.

FedericoBusero · 2021-12-19T19:57:18Z

#466

sh-user · 2021-12-19T22:41:49Z

I found information that it is possible to use a DMA buffer, but this is probably off topic.
https://docs.espressif.com/projects/esp-idf/en/latest/esp32c3/api-reference/peripherals/i2s.html

FedericoBusero · 2021-12-21T21:18:35Z

The stuttering sound is solved in my case by changing

.dma_buf_len = 64,

into

.dma_buf_len = 128,
in AudioOutputI2S.cpp

sh-user · 2021-12-22T17:22:26Z

.dma_buf_len = 128 works well, no more stuttering

earlephilhower · 2021-12-22T17:26:48Z

@FedericoBusero or @sh-user , want to do a PR? Making it 128 for all ESP32 variants is safe...

sh-user · 2021-12-25T22:58:15Z

checked .dma_buf_len = 128 on ESP8266, works well including 320kbps

Increase I2S bufer size from 64 samples/ block to 128 samples/block. Thus fixes sound artefacts described in issue earlephilhower#442

sh-user closed this as completed Nov 19, 2021

sh-user reopened this Nov 28, 2021

FedericoBusero mentioned this issue Nov 30, 2021

ESP32-C3 Support #454

Merged

FedericoBusero mentioned this issue Dec 8, 2021

I2S Fix Builtin DAC&PDM on ESP32 & compiling warning ESP32-C3 #461

Merged

FedericoBusero added a commit to FedericoBusero/ESP8266Audio that referenced this issue Dec 26, 2021

Increase I2S buffer size

0181192

Increase I2S bufer size from 64 samples/ block to 128 samples/block. Thus fixes sound artefacts described in issue earlephilhower#442

FedericoBusero mentioned this issue Dec 26, 2021

Increase I2S buffer size #472

Merged

earlephilhower closed this as completed in 4971e5c Dec 26, 2021

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ESP32-C3 support #442

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ESP32-C3 support #442

ESP32-C3 support #442

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