156 lines
4.0 KiB
C
156 lines
4.0 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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#include "ccportab.h"
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#include "portab.h"
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/*===========================================================================*/
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/* ADC driver related. */
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/*===========================================================================*/
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#define ADC_GRP1_BUF_DEPTH 1
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#define ADC_GRP2_BUF_DEPTH 64
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/* Buffers are allocated with size and address aligned to the cache
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line size.*/
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#if CACHE_LINE_SIZE > 0
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CC_ALIGN(CACHE_LINE_SIZE)
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#endif
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adcsample_t samples1[CACHE_SIZE_ALIGN(adcsample_t, ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH)];
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#if CACHE_LINE_SIZE > 0
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CC_ALIGN(CACHE_LINE_SIZE)
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#endif
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adcsample_t samples2[CACHE_SIZE_ALIGN(adcsample_t, 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 n= 0, nx = 0, ny = 0;
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void adccallback(ADCDriver *adcp) {
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(void)adcp;
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/* Updating counters.*/
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n++;
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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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if ((n % 200) == 0U) {
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palToggleLine(PORTAB_LINE_LED2);
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}
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}
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/*
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* ADC errors callback, should never happen.
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*/
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void adcerrorcallback(ADCDriver *adcp, adcerror_t err) {
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(void)adcp;
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(void)err;
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chSysHalt("it happened");
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}
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/*===========================================================================*/
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/* Application code. */
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/*===========================================================================*/
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/*
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* This is a periodic thread that does absolutely nothing except flashing
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* a LED attached to TP1.
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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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palSetLine(PORTAB_LINE_LED1);
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chThdSleepMilliseconds(500);
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palClearLine(PORTAB_LINE_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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/* Board-dependent GPIO setup code.*/
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portab_setup();
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/*
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* Creates the example thread.
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*/
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
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/*
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* Starting PORTAB_ADC1 driver and the temperature sensor.
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*/
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adcStart(&PORTAB_ADC1, &portab_adccfg1);
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adcSTM32EnableVREF(&PORTAB_ADC1);
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adcSTM32EnableTS(&PORTAB_ADC1);
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/* Performing a one-shot conversion on two channels.*/
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adcConvert(&PORTAB_ADC1, &portab_adcgrpcfg1, samples1, ADC_GRP1_BUF_DEPTH);
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cacheBufferInvalidate(samples1, sizeof (samples1) / sizeof (adcsample_t));
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/*
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* Starting PORTAB_GPT1 driver, it is used for triggering the ADC.
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*/
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gptStart(&PORTAB_GPT1, &portab_gptcfg1);
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/*
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* Starting an ADC continuous conversion triggered with a period of
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* 1/10000 second.
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*/
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adcStartConversion(&PORTAB_ADC1, &portab_adcgrpcfg2,
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samples2, ADC_GRP2_BUF_DEPTH);
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gptStartContinuous(&PORTAB_GPT1, 100U);
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/*
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* Normal main() thread activity, if the button is pressed then the
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* conversion is stopped.
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*/
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while (true) {
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if (palReadLine(PORTAB_LINE_BUTTON) == PORTAB_BUTTON_PRESSED) {
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gptStopTimer(&PORTAB_GPT1);
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adcStopConversion(&PORTAB_ADC1);
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}
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chThdSleepMilliseconds(500);
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}
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return 0;
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}
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