ESP32(-S3) LEDC 带可编程死区的互补输出示例

#include <driver/ledc.h>

ledc_timer_config_t ledc_timer = {
    .speed_mode       = LEDC_LOW_SPEED_MODE,
    .duty_resolution  = LEDC_TIMER_8_BIT,
    .timer_num        = LEDC_TIMER_0,
    .freq_hz          = 100000,
    .clk_cfg          = LEDC_AUTO_CLK
};
ESP_ERROR_CHECK(ledc_timer_config(&ledc_timer));

uint32_t deadTime = 20; // Large value to show clearly on the oscilloscope

ledc_channel_config_t ledc_noninverted_channel = {
    .gpio_num       = GPIO_NUM_10,
    .speed_mode     = LEDC_LOW_SPEED_MODE,
    .channel        = LEDC_CHANNEL_0,
    .intr_type      = LEDC_INTR_DISABLE,
    .timer_sel      = LEDC_TIMER_0,
    .duty           = 127-deadTime/2, // Set duty to 50%
    .hpoint         = 0
};
ESP_ERROR_CHECK(ledc_channel_config(&ledc_noninverted_channel));

ledc_channel_config_t ledc_complementary_channel = {
    .gpio_num       = GPIO_NUM_11,
    .speed_mode     = LEDC_LOW_SPEED_MODE,
    .channel        = LEDC_CHANNEL_1,
    .intr_type      = LEDC_INTR_DISABLE,
    .timer_sel      = LEDC_TIMER_0,
    .duty           = 127-deadTime/2, // Set cycle to start just after 50%
    .hpoint         = 127,
};
ESP_ERROR_CHECK(ledc_channel_config(&ledc_complementary_channel));