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tests/periph_adc: adapted to ADC interface changes

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This commit is contained in:
Hauke Petersen 2015-12-07 21:29:52 +01:00
parent 58a8884acf
commit dbaafc0ea1
2 changed files with 25 additions and 46 deletions
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4
tests/periph_adc/README.md
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@ -1,11 +1,11 @@
Expected result Expected result
=============== ===============
When running this test, you should see the samples of all configured ADC channels When running this test, you should see the samples of all configured ADC lines
continuously streamed to std-out. continuously streamed to std-out.
Background Background
========== ==========
This test application will initialize each configured ADC device to sample with This test application will initialize each configured ADC lines to sample with
10-bit accuracy. Once configured the application will continuously convert each 10-bit accuracy. Once configured the application will continuously convert each
available channel and print the conversion results to std-out. available channel and print the conversion results to std-out.

63
tests/periph_adc/main.c
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@ -1,9 +1,9 @@
/* /*
* Copyright (C) 2014 Freie Universität Berlin * Copyright (C) 2014-2015 Freie Universität Berlin
* *
* This file is subject to the terms and conditions of the GNU Lesser General * This file is subject to the terms and conditions of the GNU Lesser
* Public License v2.1. See the file LICENSE in the top level directory for more * General Public License v2.1. See the file LICENSE in the top level
* details. * directory for more details.
*/ */
/** /**
@ -11,7 +11,7 @@
* @{ * @{
* *
* @file * @file
* @brief Test case for the low-level ADC driver * @brief Test application for peripheral ADC drivers
* *
* @author Hauke Petersen <hauke.petersen@fu-berlin.de> * @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* *
@ -20,64 +20,43 @@
#include <stdio.h> #include <stdio.h>
#include "cpu.h"
#include "board.h"
#include "xtimer.h" #include "xtimer.h"
#include "periph/adc.h" #include "periph/adc.h"
#if ADC_NUMOF < 1
#error "Please enable at least 1 ADC device to run this test"
#endif
#define RES ADC_RES_10BIT #define RES ADC_RES_10BIT
#define DELAY (100 * 1000U) #define DELAY (100 * 1000U)
static int values[ADC_NUMOF][ADC_MAX_CHANNELS];
int main(void) int main(void)
{ {
uint32_t last = xtimer_now();
int sample = 0;
puts("\nRIOT ADC peripheral driver test\n"); puts("\nRIOT ADC peripheral driver test\n");
puts("This test simply converts each available ADC channel about every 10ms\n\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++) { for (int i = 0; i < ADC_NUMOF; i++) {
/* initialize result vector */ if (adc_init(ADC_LINE(i)) < 0) {
for (int j = 0; j < ADC_MAX_CHANNELS; j++) { printf("Initialization of ADC_LINE(%i) failed\n", i);
values[i][j] = -1;
}
/* initialize ADC device */
printf("Initializing ADC_%i @ %i bit resolution", i, (6 + (2* RES)));
if (adc_init(i, RES) == 0) {
puts(" ...[ok]");
}
else {
puts(" ...[failed]");
return 1; return 1;
} else {
printf("Successfully initialized ADC_LINE(%i)\n", i);
} }
} }
puts("\n");
while (1) { while (1) {
/* convert each channel for this ADC device */
for (int i = 0; i < ADC_NUMOF; i++) { for (int i = 0; i < ADC_NUMOF; i++) {
for (int j = 0; j < ADC_MAX_CHANNELS; j++) { sample = adc_sample(ADC_LINE(i), RES);
values[i][j] = adc_sample(i, j); if (sample < 0) {
printf("ADC_LINE(%i): 10-bit resolution not applicable\n", i);
} else {
printf("ADC_LINE(%i): %i\n", i, sample);
} }
} }
xtimer_usleep_until(&last, DELAY);
/* print the results */
printf("Values: ");
for (int i = 0; i < ADC_NUMOF; i++) {
for (int j = 0; j < ADC_MAX_CHANNELS; j++) {
if (values[i][j] >= 0) {
printf("ADC_%i-CH%i: %4i ", i, j, values[i][j]);
}
}
}
printf("\n");
/* sleep a little while */
xtimer_usleep(DELAY);
} }
return 0; return 0;