Problem with ESP32 RMT

main.c

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "driver/rmt.h"

static const char *TAG = "test";

rmt_item32_t items[] = {
    {{{ 50, 0, 50, 0 }}},
    {{{ 2, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
    {{{ 1, 1, 1, 0 }}},
};

void app_main(void *ignore)
{
    rmt_config_t config;
    config.rmt_mode = RMT_MODE_TX;
    config.channel = RMT_CHANNEL_0;
    config.gpio_num = 12;
    config.mem_block_num = 1;
    config.tx_config.carrier_en = 0;
    config.tx_config.loop_en = 1;
    config.tx_config.idle_output_en = 1;
    config.tx_config.idle_level = 0;
    config.clk_div = 10;

    ESP_LOGI(TAG, "rmt_config");
    ESP_ERROR_CHECK(rmt_config(&config));
    ESP_LOGI(TAG, "rmt_driver_install");
    ESP_ERROR_CHECK(rmt_driver_install(config.channel, 0, 0));
    int number_of_items = sizeof(items) / sizeof(rmt_item32_t);
    ESP_LOGI(TAG, "rmt_write_items");
    ESP_ERROR_CHECK(rmt_write_items(RMT_CHANNEL_0, items, number_of_items, false));

    while (1) {
        ESP_LOGI(TAG, "Waiting");
        vTaskDelay(1000 / portTICK_PERIOD_MS);
    }
    vTaskDelete(NULL);
}