164 lines
3.6 KiB
C
164 lines
3.6 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 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 1
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#define ADC_GRP1_BUF_DEPTH 8
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#define ADC_GRP2_NUM_CHANNELS 1
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#define ADC_GRP2_BUF_DEPTH 32
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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) {
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if (adcIsBufferComplete(adcp)) {
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nx += 1;
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}
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else {
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ny += 1;
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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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* SDADC configuration.
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*/
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static const ADCConfig sdadc_config = {
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0,
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{
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SDADC_CONFR_GAIN_1X | SDADC_CONFR_SE_ZERO_VOLT | SDADC_CONFR_COMMON_VSSSD,
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0,
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0
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}
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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 1 channel, SW triggered.
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* Channels: ADC_IN5P.
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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.sdadc = {
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SDADC_CR2_JSWSTART, /* CR2 */
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SDADC_JCHGR_CH(5), /* JCHGR */
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{ /* CONFCHR[2]*/
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SDADC_CONFCHR1_CH5(0),
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0
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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, 32 samples of 1 channel, SW triggered.
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* Channels: ADC_IN5P.
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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.sdadc = {
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SDADC_CR2_JSWSTART, /* CR2 */
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SDADC_JCHGR_CH(5), /* JCHGR */
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{ /* CONFCHR[2]*/
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SDADC_CONFCHR1_CH5(0),
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0
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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 THD_WORKING_AREA(waThread1, 128);
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static THD_FUNCTION(Thread1, 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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}
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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 SDADC1 driver.
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*/
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adcStart(&SDADCD1, &sdadc_config);
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adcSTM32Calibrate(&SDADCD1);
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/*
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* Linear conversion.
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*/
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adcConvert(&SDADCD1, &adcgrpcfg1, samples1, ADC_GRP1_BUF_DEPTH);
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/*
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* Starts an ADC continuous conversion.
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*/
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adcStartConversion(&SDADCD1, &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(&SDADCD1);
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}
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chThdSleepMilliseconds(500);
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}
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}
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