157 lines
4.2 KiB
C
157 lines
4.2 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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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 4
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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 1 channel, SW triggered.
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* Channels: IN10.
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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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ADC_CFGR1_RES_12BIT, /* CFGRR1 */
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ADC_TR(0, 0), /* TR */
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ADC_SMPR_SMP_1P5, /* SMPR */
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ADC_CHSELR_CHSEL10 /* CHSELR */
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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: IN10, IN11, Sensor, VRef.
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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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ADC_CFGR1_RES_12BIT, /* CFGRR1 */
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ADC_TR(0, 0), /* TR */
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ADC_SMPR_SMP_28P5, /* SMPR */
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ADC_CHSELR_CHSEL10 | ADC_CHSELR_CHSEL11 |
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ADC_CHSELR_CHSEL16 | ADC_CHSELR_CHSEL17 /* CHSELR */
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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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palSetPad(GPIOC, GPIOC_LED4);
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chThdSleepMilliseconds(500);
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palClearPad(GPIOC, GPIOC_LED4);
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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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* Setting up analog inputs used by the demo.
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*/
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palSetGroupMode(GPIOC, PAL_PORT_BIT(0) | PAL_PORT_BIT(1),
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0, PAL_MODE_INPUT_ANALOG);
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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 and the thermal sensor.
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*/
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adcStart(&ADCD1, NULL);
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adcSTM32SetCCR(ADC_CCR_VBATEN | ADC_CCR_TSEN | ADC_CCR_VREFEN);
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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_BUTTON)) {
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adcStopConversion(&ADCD1);
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adcSTM32SetCCR(0);
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}
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chThdSleepMilliseconds(500);
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}
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}
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