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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 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 2
#define ADC_GRP1_BUF_DEPTH 8
#define ADC_GRP2_NUM_CHANNELS 8
#define ADC_GRP2_BUF_DEPTH 16
static adcsample_t samples1[ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH];
static adcsample_t samples2[ADC_GRP2_NUM_CHANNELS * ADC_GRP2_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 (samples2 == buffer) {
nx += n;
}
else {
ny += n;
}
}
static void adcerrorcallback(ADCDriver *adcp, adcerror_t err) {
(void)adcp;
(void)err;
}
/*
* ADC conversion group.
* Mode: Linear buffer, 8 samples of 2 channels, SW triggered.
* Channels: IN1, IN9.
*/
static const ADCConversionGroup adcgrpcfg1 = {
FALSE,
ADC_GRP1_NUM_CHANNELS,
NULL,
adcerrorcallback,
.u.adc = {
0, /* CR1 */
ADC_CR2_SWSTART, /* CR2 */
0, /* LTR */
0, /* HTR */
{ /* SMPR[2] */
0,
ADC_SMPR2_SMP_AN9(ADC_SAMPLE_41P5) | ADC_SMPR2_SMP_AN1(ADC_SAMPLE_41P5),
},
{ /* SQR[3] */
0,
0,
ADC_SQR3_SQ2_N(ADC_CHANNEL_IN9) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN1)
}
}
};
/*
* ADC conversion group.
* Mode: Continuous, 16 samples of 8 channels, SW triggered.
* Channels: IN1, IN9, IN1, IN9, IN1, IN9, VBat, Sensor.
*/
static const ADCConversionGroup adcgrpcfg2 = {
TRUE,
ADC_GRP2_NUM_CHANNELS,
adccallback,
adcerrorcallback,
.u.adc = {
0, /* CR1 */
ADC_CR2_SWSTART, /* CR2 */
0, /* LTR */
0, /* HTR */
{ /* SMPR[2] */
ADC_SMPR1_SMP_SENSOR(ADC_SAMPLE_239P5) | ADC_SMPR1_SMP_VREF(ADC_SAMPLE_239P5),
ADC_SMPR2_SMP_AN9(ADC_SAMPLE_41P5) | ADC_SMPR2_SMP_AN1(ADC_SAMPLE_41P5)
},
{ /* SQR[3] */
0,
ADC_SQR2_SQ8_N(ADC_CHANNEL_SENSOR) | ADC_SQR2_SQ7_N(ADC_CHANNEL_VBAT),
ADC_SQR3_SQ6_N(ADC_CHANNEL_IN9) | ADC_SQR3_SQ5_N(ADC_CHANNEL_IN1) |
ADC_SQR3_SQ4_N(ADC_CHANNEL_IN9) | ADC_SQR3_SQ3_N(ADC_CHANNEL_IN1) |
ADC_SQR3_SQ2_N(ADC_CHANNEL_IN9) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN1)
}
}
};
/*
* Red LEDs blinker thread, times are in milliseconds.
*/
static WORKING_AREA(waThread1, 128);
static msg_t Thread1(void *arg) {
(void)arg;
chRegSetThreadName("blinker");
while (TRUE) {
palClearPad(GPIOC, GPIOC_LED1);
chThdSleepMilliseconds(500);
palSetPad(GPIOC, GPIOC_LED1);
chThdSleepMilliseconds(500);
}
return 0;
}
/*
* Application entry point.
*/
int main(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/*
* Creates the blinker thread.
*/
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
/*
* Activates the ADC1 driver, the temperature sensor and the VBat
* measurement.
*/
adcStart(&ADCD1, NULL);
adcSTM32EnableTSVREFE();
adcSTM32EnableVBATE();
/*
* Linear conversion.
*/
adcConvert(&ADCD1, &adcgrpcfg1, samples1, ADC_GRP1_BUF_DEPTH);
chThdSleepMilliseconds(1000);
/*
* Starts an ADC continuous conversion.
*/
adcStartConversion(&ADCD1, &adcgrpcfg2, samples2, ADC_GRP2_BUF_DEPTH);
/*
* Normal main() thread activity, in this demo it does nothing.
*/
while (TRUE) {
if (palReadPad(GPIOA, GPIOA_WKUP_BUTTON)) {
adcStopConversion(&ADCD1);
}
chThdSleepMilliseconds(500);
}
}
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