blob: 788df54b24addcb5116049dbac5c157e5227cf38 [file] [log] [blame]
/*
* Copyright (c) 2018 Linaro Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/device.h>
#include <errno.h>
#include <zephyr/drivers/led.h>
#include <zephyr/sys/util.h>
#include <zephyr/kernel.h>
#define LOG_LEVEL CONFIG_LOG_DEFAULT_LEVEL
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(app);
#define NUM_LEDS 16
#define DELAY_TIME K_MSEC(1000)
int main(void)
{
const struct device *const led_dev = DEVICE_DT_GET_ANY(ti_lp3943);
int i, ret;
if (!led_dev) {
LOG_ERR("No device with compatible ti,lp3943 found");
return 0;
} else if (!device_is_ready(led_dev)) {
LOG_ERR("LED device %s not ready", led_dev->name);
return 0;
} else {
LOG_INF("Found LED device %s", led_dev->name);
}
/*
* 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 0;
}
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 0;
}
k_sleep(DELAY_TIME);
}
}
return 0;
}