#include <stdio.h>
#include "serial_mcu.h"
#include "esp_log.h"
#include "driver/uart.h"
#include "esp_err.h"
#include "string.h"
#include "driver/gpio.h"
// 这里是 serial_mcu.c 的实现代码

static const char *TAG = "serial_mcu";


#define TXD_PIN (GPIO_NUM_21)   // TXD 引脚
#define RXD_PIN (GPIO_NUM_20)   // RXD 引脚
#define UART_PORT_NUM      UART_NUM_1   // 使用 UART1

static const int RX_BUF_SIZE = 1024;   // 接收缓冲区大小

// 初始化串口
void serial_mcu_init(void)
{
    // TODO: 初始化串口
    ESP_LOGD(TAG, "Serial MCU initialized");

    const uart_config_t uart_config = {
        .baud_rate = 230400,     // 波特率
        .data_bits = UART_DATA_8_BITS,   // 数据位
        .parity = UART_PARITY_DISABLE,   // 校验位
        .stop_bits = UART_STOP_BITS_1,   // 停止位
        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,   // 流控
        .source_clk = UART_SCLK_DEFAULT,    // 时钟源
    };

    // 配置串口
    uart_driver_install(UART_PORT_NUM, RX_BUF_SIZE * 2, 0, 0, NULL, 0);
    uart_param_config(UART_PORT_NUM, &uart_config);
    uart_set_pin(UART_PORT_NUM, TXD_PIN, RXD_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);  // 设置引脚
    // 日志
    ESP_LOGI(TAG, "UART driver installed");}

int sendControlFrame(uint8_t cmd, uint8_t data)
{
    uint8_t buf[3] = {0x55, cmd, data};
    int txBytes = uart_write_bytes(UART_NUM_1, (const char*)buf, 3);
    ESP_LOGI("TX", "Sent %d bytes CMD=0x%02X DATA=%d", txBytes, cmd, data);
    return txBytes;
}