173 lines
4.4 KiB
C
173 lines
4.4 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "ch.h"
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#include "hal.h"
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#define ADC_GRP1_NUM_CHANNELS 2
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#define ADC_GRP1_BUF_DEPTH 8
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#define ADC_GRP2_NUM_CHANNELS 8
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#define ADC_GRP2_BUF_DEPTH 16
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static adcsample_t samples1[ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH];
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static adcsample_t samples2[ADC_GRP2_NUM_CHANNELS * ADC_GRP2_BUF_DEPTH];
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/*
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* ADC streaming callback.
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*/
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size_t nx = 0, ny = 0;
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static void adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n) {
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(void)adcp;
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if (samples2 == buffer) {
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nx += n;
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}
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else {
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ny += n;
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}
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}
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static void adcerrorcallback(ADCDriver *adcp, adcerror_t err) {
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(void)adcp;
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(void)err;
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}
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/*
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* ADC conversion group.
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* Mode: Linear buffer, 8 samples of 2 channels, SW triggered.
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* Channels: IN1, IN9.
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*/
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static const ADCConversionGroup adcgrpcfg1 = {
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FALSE,
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ADC_GRP1_NUM_CHANNELS,
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NULL,
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adcerrorcallback,
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.u.adc = {
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0, /* CR1 */
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ADC_CR2_SWSTART, /* CR2 */
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0, /* LTR */
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0, /* HTR */
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{ /* SMPR[2] */
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0,
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ADC_SMPR2_SMP_AN9(ADC_SAMPLE_41P5) | ADC_SMPR2_SMP_AN1(ADC_SAMPLE_41P5),
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},
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{ /* SQR[3] */
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0,
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0,
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ADC_SQR3_SQ2_N(ADC_CHANNEL_IN9) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN1)
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}
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}
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};
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/*
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* ADC conversion group.
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* Mode: Continuous, 16 samples of 8 channels, SW triggered.
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* Channels: IN1, IN9, IN1, IN9, IN1, IN9, VBat, Sensor.
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*/
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static const ADCConversionGroup adcgrpcfg2 = {
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TRUE,
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ADC_GRP2_NUM_CHANNELS,
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adccallback,
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adcerrorcallback,
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.u.adc = {
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0, /* CR1 */
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ADC_CR2_SWSTART, /* CR2 */
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0, /* LTR */
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0, /* HTR */
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{ /* SMPR[2] */
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ADC_SMPR1_SMP_SENSOR(ADC_SAMPLE_239P5) | ADC_SMPR1_SMP_VREF(ADC_SAMPLE_239P5),
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ADC_SMPR2_SMP_AN9(ADC_SAMPLE_41P5) | ADC_SMPR2_SMP_AN1(ADC_SAMPLE_41P5)
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},
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{ /* SQR[3] */
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0,
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ADC_SQR2_SQ8_N(ADC_CHANNEL_SENSOR) | ADC_SQR2_SQ7_N(ADC_CHANNEL_VBAT),
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ADC_SQR3_SQ6_N(ADC_CHANNEL_IN9) | ADC_SQR3_SQ5_N(ADC_CHANNEL_IN1) |
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ADC_SQR3_SQ4_N(ADC_CHANNEL_IN9) | ADC_SQR3_SQ3_N(ADC_CHANNEL_IN1) |
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ADC_SQR3_SQ2_N(ADC_CHANNEL_IN9) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN1)
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}
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}
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};
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/*
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* Red LEDs blinker thread, times are in milliseconds.
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*/
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static WORKING_AREA(waThread1, 128);
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static msg_t Thread1(void *arg) {
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(void)arg;
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chRegSetThreadName("blinker");
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while (TRUE) {
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palClearPad(GPIOC, GPIOC_LED1);
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chThdSleepMilliseconds(500);
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palSetPad(GPIOC, GPIOC_LED1);
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chThdSleepMilliseconds(500);
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}
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return 0;
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}
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/*
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* Application entry point.
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*/
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int main(void) {
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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/*
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* Creates the blinker thread.
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*/
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
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/*
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* Activates the ADC1 driver, the temperature sensor and the VBat
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* measurement.
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*/
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adcStart(&ADCD1, NULL);
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adcSTM32Calibrate(&ADCD1);
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adcSTM32EnableTSVREFE();
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adcSTM32EnableVBATE();
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/*
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* Linear conversion.
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*/
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adcConvert(&ADCD1, &adcgrpcfg1, samples1, ADC_GRP1_BUF_DEPTH);
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chThdSleepMilliseconds(1000);
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/*
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* Starts an ADC continuous conversion.
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*/
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adcStartConversion(&ADCD1, &adcgrpcfg2, samples2, ADC_GRP2_BUF_DEPTH);
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/*
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* Normal main() thread activity, in this demo it does nothing.
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*/
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while (TRUE) {
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if (palReadPad(GPIOA, GPIOA_WKUP_BUTTON)) {
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adcStopConversion(&ADCD1);
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}
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chThdSleepMilliseconds(500);
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}
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}
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