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/*
* Copyright (C) 2014-2015 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief Test application for peripheral ADC drivers
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*
* @}
*/
#include <stdio.h>
#include "xtimer.h"
#include "timex.h"
#include "periph/adc.h"
#define RES ADC_RES_10BIT
#define DELAY (100LU * US_PER_MS) /* 100 ms */
int main(void)
{
xtimer_ticks32_t last = xtimer_now();
int sample = 0;
puts("\nRIOT ADC peripheral driver test\n");
puts("This test will sample all available ADC lines once every 100ms with\n"
"a 10-bit resolution and print the sampled results to STDIO\n\n");
/* initialize all available ADC lines */
for (int i = 0; i < ADC_NUMOF; i++) {
if (adc_init(ADC_LINE(i)) < 0) {
printf("Initialization of ADC_LINE(%i) failed\n", i);
return 1;
} else {
printf("Successfully initialized ADC_LINE(%i)\n", i);
}
}
while (1) {
for (int i = 0; i < ADC_NUMOF; i++) {
sample = adc_sample(ADC_LINE(i), RES);
if (sample < 0) {
printf("ADC_LINE(%i): 10-bit resolution not applicable\n", i);
} else {
printf("ADC_LINE(%i): %i\n", i, sample);
}
}
xtimer_periodic_wakeup(&last, DELAY);
}
return 0;
}