esp-who/components/common/app_led.c

65 lines
2.0 KiB
C
Raw Normal View History

#include "app_led.h"
#if CONFIG_LED_ILLUMINATOR_ENABLED
#include "esp_log.h"
#include "driver/ledc.h"
static const char *TAG = "app_led";
#if CONFIG_LED_LEDC_LOW_SPEED_MODE
#define CONFIG_LED_LEDC_SPEED_MODE LEDC_LOW_SPEED_MODE
#else
#define CONFIG_LED_LEDC_SPEED_MODE LEDC_HIGH_SPEED_MODE
#endif
void app_led_init()
{
gpio_set_direction(CONFIG_LED_LEDC_PIN, GPIO_MODE_OUTPUT);
ledc_timer_config_t ledc_timer = {
.duty_resolution = LEDC_TIMER_8_BIT, // resolution of PWM duty
.freq_hz = 1000, // frequency of PWM signal
.speed_mode = LEDC_LOW_SPEED_MODE, // timer mode
.timer_num = CONFIG_LED_LEDC_TIMER // timer index
};
ledc_channel_config_t ledc_channel = {
.channel = CONFIG_LED_LEDC_CHANNEL,
.duty = 0,
.gpio_num = CONFIG_LED_LEDC_PIN,
.speed_mode = LEDC_LOW_SPEED_MODE,
.hpoint = 0,
.timer_sel = CONFIG_LED_LEDC_TIMER};
#if CONFIG_LED_LEDC_HIGH_SPEED_MODE
ledc_timer.speed_mode = ledc_channel.speed_mode = LEDC_HIGH_SPEED_MODE;
#endif
switch (ledc_timer_config(&ledc_timer))
{
case ESP_ERR_INVALID_ARG:
ESP_LOGE(TAG, "ledc_timer_config() parameter error");
break;
case ESP_FAIL:
ESP_LOGE(TAG, "ledc_timer_config() Can not find a proper pre-divider number base on the given frequency and the current duty_resolution");
break;
case ESP_OK:
if (ledc_channel_config(&ledc_channel) == ESP_ERR_INVALID_ARG)
{
ESP_LOGE(TAG, "ledc_channel_config() parameter error");
}
break;
default:
break;
}
ESP_LOGE(TAG, "LED has been initialized.");
}
void app_led_duty(int duty)
{ // Turn LED On or Off
if (duty > CONFIG_LED_MAX_INTENSITY)
duty = CONFIG_LED_MAX_INTENSITY;
ledc_set_duty(CONFIG_LED_LEDC_SPEED_MODE, CONFIG_LED_LEDC_CHANNEL, duty);
ledc_update_duty(CONFIG_LED_LEDC_SPEED_MODE, CONFIG_LED_LEDC_CHANNEL);
ESP_LOGI(TAG, "Set LED intensity to %d", duty);
}
#endif