120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
|
|
|
|
This file is part of ChibiOS/RT.
|
|
|
|
ChibiOS/RT is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ChibiOS/RT is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
|
|
#define ADC_GRP1_NUM_CHANNELS 8
|
|
#define ADC_GRP1_BUF_DEPTH 16
|
|
|
|
/*
|
|
* ADC configuration, empty for STM32, nothing to configure.
|
|
*/
|
|
static const ADCConfig adccfg = {};
|
|
|
|
static adcsample_t samples[ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH];
|
|
|
|
/*
|
|
* ADC streaming callback.
|
|
*/
|
|
size_t nx = 0, ny = 0;
|
|
static void adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n) {
|
|
|
|
(void)adcp;
|
|
if (samples == buffer) {
|
|
nx += n;
|
|
}
|
|
else {
|
|
ny += n;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ADC conversion group.
|
|
* Mode: Streaming, continuous, 16 samples of 8 channels, SW triggered.
|
|
* Channels: IN10, IN11, IN10, IN11, IN10, IN11, Sensor, VRef.
|
|
*/
|
|
static const ADCConversionGroup adcgrpcfg = {
|
|
TRUE,
|
|
ADC_GRP1_NUM_CHANNELS,
|
|
adccallback,
|
|
0,
|
|
ADC_CR2_TSVREFE,
|
|
0,
|
|
0,
|
|
ADC_SQR1_NUM_CH(ADC_GRP1_NUM_CHANNELS),
|
|
ADC_SQR2_SQ7_N(ADC_CHANNEL_SENSOR) | ADC_SQR2_SQ6_N(ADC_CHANNEL_VREFINT),
|
|
ADC_SQR3_SQ5_N(ADC_CHANNEL_IN11) | ADC_SQR3_SQ4_N(ADC_CHANNEL_IN10) |
|
|
ADC_SQR3_SQ3_N(ADC_CHANNEL_IN11) | ADC_SQR3_SQ2_N(ADC_CHANNEL_IN10) |
|
|
ADC_SQR3_SQ1_N(ADC_CHANNEL_IN11) | ADC_SQR3_SQ0_N(ADC_CHANNEL_IN10)
|
|
};
|
|
|
|
/*
|
|
* Red LEDs blinker thread, times are in milliseconds.
|
|
*/
|
|
static WORKING_AREA(waThread1, 128);
|
|
static msg_t Thread1(void *arg) {
|
|
|
|
(void)arg;
|
|
while (TRUE) {
|
|
palClearPad(IOPORT3, GPIOC_LED);
|
|
chThdSleepMilliseconds(500);
|
|
palSetPad(IOPORT3, GPIOC_LED);
|
|
chThdSleepMilliseconds(500);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Entry point, note, the main() function is already a thread in the system
|
|
* on entry.
|
|
*/
|
|
int main(int argc, char **argv) {
|
|
|
|
(void)argc;
|
|
(void)argv;
|
|
|
|
/*
|
|
* Setting up analog inputs used by the demo.
|
|
*/
|
|
palSetGroupMode(GPIOC, PAL_PORT_BIT(0) | PAL_PORT_BIT(1),
|
|
PAL_MODE_INPUT_ANALOG);
|
|
|
|
/*
|
|
* Creates the blinker thread.
|
|
*/
|
|
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
|
|
|
|
/*
|
|
* Starts an ADC continuous conversion.
|
|
*/
|
|
adcStart(&ADCD1, &adccfg);
|
|
adcStartConversion(&ADCD1, &adcgrpcfg, samples, ADC_GRP1_BUF_DEPTH);
|
|
|
|
/*
|
|
* Normal main() thread activity, in this demo it does nothing.
|
|
*/
|
|
while (TRUE) {
|
|
if (palReadPad(GPIOA, GPIOA_BUTTON))
|
|
adcStopConversion(&ADCD1);
|
|
chThdSleepMilliseconds(500);
|
|
}
|
|
return 0;
|
|
}
|