blob: a8ffcc8fa04ba986b1b917b41691f5878448f59d [file] [log] [blame]
/*
* Copyright (c) 2018 Linaro Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <device.h>
#include <errno.h>
#include <drivers/led.h>
#include <sys/util.h>
#include <zephyr.h>
#define LOG_LEVEL CONFIG_LOG_DEFAULT_LEVEL
#include <logging/log.h>
LOG_MODULE_REGISTER(app);
#define LED_DEV_NAME DT_LABEL(DT_INST(0, ti_lp3943))
#define NUM_LEDS 16
#define DELAY_TIME K_MSEC(1000)
void main(void)
{
const struct device *led_dev;
int i, ret;
led_dev = device_get_binding(LED_DEV_NAME);
if (led_dev) {
LOG_INF("Found LED device %s", LED_DEV_NAME);
} else {
LOG_ERR("LED device %s not found", LED_DEV_NAME);
return;
}
/*
* Display a continuous pattern that turns on 16 LEDs at 1s one by
* one until it reaches the end and turns off LEDs in reverse order.
*/
LOG_INF("Displaying the pattern");
while (1) {
/* Turn on LEDs one by one */
for (i = 0; i < NUM_LEDS; i++) {
ret = led_on(led_dev, i);
if (ret < 0) {
return;
}
k_sleep(DELAY_TIME);
}
/* Turn off LEDs one by one */
for (i = NUM_LEDS - 1; i >= 0; i--) {
ret = led_off(led_dev, i);
if (ret < 0) {
return;
}
k_sleep(DELAY_TIME);
}
}
}