123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 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 8
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#define ADC_GRP1_BUF_DEPTH 16
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static adcsample_t samples[ADC_GRP1_NUM_CHANNELS * ADC_GRP1_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 (samples == 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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/*
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* ADC conversion group.
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* Mode: Streaming, continuous, 16 samples of 8 channels, SW triggered.
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* Channels: IN10, IN11, IN10, IN11, IN10, IN11, Sensor, VRef.
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*/
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static const ADCConversionGroup adcgrpcfg = {
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TRUE,
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ADC_GRP1_NUM_CHANNELS,
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adccallback,
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0,
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ADC_CR2_TSVREFE,
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0,
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0,
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ADC_SQR1_NUM_CH(ADC_GRP1_NUM_CHANNELS),
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ADC_SQR2_SQ8_N(ADC_CHANNEL_SENSOR) | ADC_SQR2_SQ7_N(ADC_CHANNEL_VREFINT),
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ADC_SQR3_SQ6_N(ADC_CHANNEL_IN11) | ADC_SQR3_SQ5_N(ADC_CHANNEL_IN10) |
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ADC_SQR3_SQ4_N(ADC_CHANNEL_IN11) | ADC_SQR3_SQ3_N(ADC_CHANNEL_IN10) |
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ADC_SQR3_SQ2_N(ADC_CHANNEL_IN11) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN10)
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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(IOPORT3, GPIOC_LED);
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chThdSleepMilliseconds(500);
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palSetPad(IOPORT3, GPIOC_LED);
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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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* 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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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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* Starts an ADC continuous conversion.
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*/
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adcStart(&ADCD1, NULL);
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adcStartConversion(&ADCD1, &adcgrpcfg, samples, ADC_GRP1_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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chThdSleepMilliseconds(500);
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}
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return 0;
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}
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