main.c
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/*
* Copyright 2015 Ludwig Knüpfer
* Copyright 2017 HAW Hamburg
*
* 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 the ISL29125 RGB light sensor
*
* @author Ludwig Knüpfer <ludwig.knuepfer@fu-berlin.de>
* @author Martin Heusmann <martin.heusmann@haw-hamburg.de>
* @author Cenk Gündoğan <mail-github@cgundogan.de>
*
* @}
*/
#ifndef TEST_ISL29125_I2C
#error "TEST_ISL29125_I2C not defined"
#endif
#ifndef TEST_ISL29125_IRQ_PIN
#error "ISL29125_IRQ_PIN not defined"
#endif
#include <stdio.h>
#include <string.h>
#include "xtimer.h"
#include "isl29125.h"
#define SLEEP (250 * 1000U)
void cb(void *arg)
{
(void) arg;
printf("INT: external interrupt\n");
}
int main(void)
{
isl29125_t dev;
isl29125_rgb_t data;
color_rgb_t data8bit;
memset(&data, 0x00, sizeof(data));
/* Parameters for testing, change if needed. */
uint16_t lower_threshold = 0;
uint16_t higher_threshold = 8000;
puts("ISL29125 light sensor test application\n");
printf("Initializing ISL29125 sensor at I2C_%i... ", TEST_ISL29125_I2C);
if (isl29125_init(&dev, TEST_ISL29125_I2C, TEST_ISL29125_IRQ_PIN,
ISL29125_MODE_RGB, ISL29125_RANGE_10K,
ISL29125_RESOLUTION_16) == 0) {
puts("[OK]\n");
}
else {
puts("[Failed]");
return 1;
}
puts("Initializing interrupt");
if (isl29125_init_int(&dev, ISL29125_INTERRUPT_STATUS_RED,
ISL29125_INTERRUPT_PERSIST_1, ISL29125_INTERRUPT_CONV_DIS,
lower_threshold, higher_threshold, cb, NULL) != 0) {
puts("[Failed]");
return 1;
}
/* try out some modes */
static const isl29125_mode_t modes[] = {
ISL29125_MODE_DOWN, ISL29125_MODE_STANDBY, ISL29125_MODE_RGB,
ISL29125_MODE_R, ISL29125_MODE_G, ISL29125_MODE_B,
ISL29125_MODE_RG, ISL29125_MODE_GB};
static const char* mode_names[] = {
"ISL29125_MODE_DOWN", "ISL29125_MODE_STANDBY", "ISL29125_MODE_RGB",
"ISL29125_MODE_R", "ISL29125_MODE_G", "ISL29125_MODE_B",
"ISL29125_MODE_RG", "ISL29125_MODE_GB"};
for (int i = 0; i < sizeof(modes); i++) {
printf("Setting mode %s\n", mode_names[i]);
isl29125_set_mode(&dev, modes[i]);
xtimer_usleep(SLEEP);
isl29125_read_rgb_color(&dev, &data8bit);
printf("RGB value: (%3i / %3i / %3i) 8 bit\n",
data8bit.r, data8bit.g, data8bit.b);
}
puts("Resetting mode to RGB and reading continuously");
isl29125_set_mode(&dev, ISL29125_MODE_RGB);
xtimer_usleep(SLEEP);
while (1) {
isl29125_read_rgb_lux(&dev, &data);
printf("RGB value: (%5i / %5i / %5i) lux\n",
(int)data.red, (int)data.green, (int)data.blue);
xtimer_usleep(SLEEP);
printf("IRQ-Status: %i \n", isl29125_read_irq_status(&dev));
}
return 0;
}