ESP32(-S3) LEDC complementary output with programmable dead time example

On the ESP32 platform, you can use the LEDC PWM driver to generate programmable dead time by setting the duty (i.e. length of pulse) and hpoint(time offset of pulse) appropriately.

#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));