#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_ops.h"
#include "driver/i2c_master.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_log.h"

#include <string.h>
#include "driver/uart.h"

static const char *TAG = "PMME-Device";

#define UART_NUM UART_NUM_2
#define BUF_SIZE 32
#define UART_BUF_SIZE 128
#define TXD_PIN 17
#define RXD_PIN 16

void app_main(void)
{
    ESP_LOGI(TAG, "Initialize UART, Wait 1 second");
    vTaskDelay(pdMS_TO_TICKS(1000));
    ESP_LOGI(TAG, "Initialize UART, ok now go...");
    uart_config_t uart_config = {
        .baud_rate = 9600,
        .data_bits = UART_DATA_8_BITS,
        .parity = UART_PARITY_DISABLE,
        .stop_bits = UART_STOP_BITS_1,
        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
        // .rx_flow_ctrl_thresh = 122,
    };
    ESP_ERROR_CHECK(uart_param_config(UART_NUM, &uart_config));
    ESP_ERROR_CHECK(uart_set_pin(UART_NUM, TXD_PIN, RXD_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
    ESP_ERROR_CHECK(uart_driver_install(UART_NUM, UART_BUF_SIZE * 2, 0, 0, NULL, 0));

    ESP_LOGI(TAG, "Create a simple pattern");
    uint8_t uart_data[BUF_SIZE];
    int frequency_check = 2000;
    while (1) {
        int len = uart_read_bytes(UART_NUM, uart_data, BUF_SIZE, frequency_check / portTICK_PERIOD_MS);
        ESP_LOGI(TAG, "Received %d bytes from sensor", len);
        if (len > 0) {
            for(int i = 0; i < len && i < 16; i++) {
                ESP_LOGI(TAG, "0x%02X", uart_data[i]);
            }
        }

        vTaskDelay(pdMS_TO_TICKS(frequency_check));
    }
}