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sensors.c
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sensors.c
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/*
* sensors.c
*
* Created on: 01.04.2013
* Author: pae
*/
/*
* BOARD STM32F103C_MINNI MCU STM32F103C8T6
*
* PERIPHERALS MODES REMAP FUNCTIONS PINS
* ADC1 IN8 0 ADC1_IN8 PB0
* ADC1 IN9 0 ADC1_IN9 PB1
*/
#include "ch.h"
#include "hal.h"
#include "sensors.h"
adc_read_t sensors; // описание датчиков
static BinarySemaphore adcsem, adc_cbsem; // семафор управления процессом adc
static adcsample_t samples[SENSORSALL]; // буфер чтения АЦП
static void adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n);
static void adcerrcallback(ADCDriver *adcp, adcerror_t err);
/*
* ADC conversion group.
* Mode: Linear buffer, 1 samples of 17 channels, SW triggered.
* Channels: IN0-17 (239.5 cycles sampling time)
*/
static const ADCConversionGroup adcgrpcfg = {
FALSE, //circular
SENSORSALL, //number of channels
adccallback, //adc callback function
adcerrcallback, //error callback function
/* HW dependent part.*/
0, //cr1
0, //cr2
//SMPR1 register
// ADC_SMPR1_SMP_VREF(ADC_SAMPLE_239P5) |
// ADC_SMPR1_SMP_SENSOR(ADC_SAMPLE_239P5) |
// ADC_SMPR1_SMP_AN15(ADC_SAMPLE_239P5) |
// ADC_SMPR1_SMP_AN14(ADC_SAMPLE_239P5) |
// ADC_SMPR1_SMP_AN13(ADC_SAMPLE_239P5) |
// ADC_SMPR1_SMP_AN12(ADC_SAMPLE_239P5) |
// ADC_SMPR1_SMP_AN11(ADC_SAMPLE_239P5) |
// ADC_SMPR1_SMP_AN10(ADC_SAMPLE_239P5) |
0,
//SMPR2 register
// ADC_SMPR2_SMP_AN9(ADC_SAMPLE_239P5) |
// ADC_SMPR2_SMP_AN8(ADC_SAMPLE_239P5) |
// ADC_SMPR2_SMP_AN7(ADC_SAMPLE_239P5) |
// ADC_SMPR2_SMP_AN6(ADC_SAMPLE_239P5) |
// ADC_SMPR2_SMP_AN5(ADC_SAMPLE_239P5) |
// ADC_SMPR2_SMP_AN4(ADC_SAMPLE_239P5) |
// ADC_SMPR2_SMP_AN3(ADC_SAMPLE_239P5) |
// ADC_SMPR2_SMP_AN2(ADC_SAMPLE_239P5) |
// ADC_SMPR2_SMP_AN1(ADC_SAMPLE_239P5) |
ADC_SMPR2_SMP_AN0(ADC_SAMPLE_239P5) |
0,
//SQR1 register
// ADC_SQR1_SQ16_N(ADC_CHANNEL_SENSOR) |
// ADC_SQR1_SQ15_N(ADC_CHANNEL_IN15) |
// ADC_SQR1_SQ14_N(ADC_CHANNEL_IN14) |
// ADC_SQR1_SQ13_N(ADC_CHANNEL_IN13) |
ADC_SQR1_NUM_CH(SENSORSALL),
//SQR2 register
// ADC_SQR2_SQ12_N(ADC_CHANNEL_IN12) |
// ADC_SQR2_SQ11_N(ADC_CHANNEL_IN11) |
// ADC_SQR2_SQ10_N(ADC_CHANNEL_IN10) |
// ADC_SQR2_SQ9_N(ADC_CHANNEL_IN9) |
// ADC_SQR2_SQ8_N(ADC_CHANNEL_IN8) |
// ADC_SQR2_SQ7_N(ADC_CHANNEL_IN7) |
0,
//SQR3 register
// ADC_SQR3_SQ6_N(ADC_CHANNEL_IN9) |
// ADC_SQR3_SQ5_N(ADC_CHANNEL_IN8) |
// ADC_SQR3_SQ4_N(ADC_CHANNEL_IN3) |
// ADC_SQR3_SQ3_N(ADC_CHANNEL_IN9) |
// ADC_SQR3_SQ2_N(ADC_CHANNEL_IN9) |
ADC_SQR3_SQ1_N(ADC_CHANNEL_IN8) |
0
};
/*
* ADC end conversion callback
*/
static void adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n) {
(void) buffer; (void) n;
if (adcp->state == ADC_COMPLETE){
chBSemSignal(&adc_cbsem);
}
}
static void adcerrcallback(ADCDriver *adcp, adcerror_t err) {
(void)adcp;
(void)err;
if (adcp->state == ADC_ERROR){
sensors.error = ADC_CONV_ERROR;
chBSemSignal(&adc_cbsem);
}
}
/*
* процесс опроса датчиков АЦП
*/
static Thread *ADCThread_p;
WORKING_AREA(waADCThread, 128);
__attribute__((noreturn))
msg_t ADCThread(void *arg) {
chRegSetThreadName("ADCThd");
chBSemInit(&adcsem,FALSE);
chBSemInit(&adc_cbsem,TRUE);
(void)arg;
while (TRUE) {
adc_read_t *req;
Thread *tp;
tp = chMsgWait();
req = (adc_read_t *) chMsgGet(tp);
chMsgRelease(tp, (msg_t) req);
req->error = ADC_NO_ERROR;
chBSemReset(&adc_cbsem,TRUE);
adcStartConversion(&ADCD1, &adcgrpcfg, samples, 1);
if (chBSemWaitTimeout(&adc_cbsem, MS2ST(ADC_TIMEOUT_MS)) == RDY_TIMEOUT){
req->error = ADC_TIMEOUT;
}
if (req->error == ADC_NO_ERROR) {
// датчик напряжения аккумулятора
req->sensor[BATTSENSOR].value = samples[BATTSENSOR];
// остальные датчики
for (uint8_t i = 0; i < SENSORSNUM; i++){
req->sensor[i].value = samples[i];
}
}
chBSemSignal(&adcsem);
}
}
/*
* Initializes the ADC driver 1.
*/
void sensors_init(void){
adcStart(&ADCD1, NULL);
palSetPadMode(GPIOB, GPIOB_PIN0, PAL_MODE_INPUT_ANALOG); // 00: PB.00 -> ADC1 channel 8
// palSetPadMode(GPIOB, GPIOB_PIN1, PAL_MODE_INPUT_ANALOG); // 01: PB.01 -> ADC1 channel 9
sensors.sensor[BATTSENSOR].type = 2;
for (uint8_t i = 0; i < SENSORSNUM; i++){
sensors.sensor[i].type = 0;
}
ADCThread_p = chThdCreateStatic(waADCThread, sizeof(waADCThread), ADC_PRIO, ADCThread, NULL);
}
adc_error_t sensors_read(void) {
adc_read_t *adc_read_p = &sensors;
chBSemWait(&adcsem); /* to be sure */
chMsgSend(ADCThread_p, (msg_t) adc_read_p);
/* wait for reply */
if(chBSemWaitTimeout(&adcsem, MS2ST(ADC_TIMEOUT_MS)) == RDY_TIMEOUT) {
adc_read_p->error = ADC_TIMEOUT;
return ADC_TIMEOUT;
}
chBSemReset(&adcsem, FALSE);
if (adc_read_p->error == ADC_CONV_ERROR){
return ADC_CONV_ERROR;
}
adc_read_p->error = ADC_NO_ERROR;
return ADC_NO_ERROR;
}