tjc8048k070_011串口屏与stm32f407zgt6通信代码

好的，以下是基于HAL库实现的tjc8048k070_011串口屏与STM32F407ZGT6的通信代码示例：

#include "stm32f4xx_hal.h"
#include <string.h>

#define UART_TX_BUF_SIZE 128
#define UART_RX_BUF_SIZE 128

UART_HandleTypeDef huart;

uint8_t uart_tx_buf[UART_TX_BUF_SIZE];
uint8_t uart_rx_buf[UART_RX_BUF_SIZE];

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART3_UART_Init(void);

int main(void)
{
    HAL_Init();
    SystemClock_Config();
    MX_GPIO_Init();
    MX_USART3_UART_Init();

    // 初始化串口屏
    uint8_t init_cmd[] = {0x55, 0x03, 0x00, 0x01, 0x01, 0xf9};
    HAL_UART_Transmit(&huart, init_cmd, sizeof(init_cmd), 1000);

    // 发送字符串到串口屏
    uint8_t str_cmd[] = {0x55, 0x05, 0x00, 0x02, 0x00, 0x08, 'H', 'e', 'l', 'l', 'o', '!', 0x92};
    HAL_UART_Transmit(&huart, str_cmd, sizeof(str_cmd), 1000);

    while (1)
    {
        // 接收串口屏发回的数据
        uint8_t rx_len = 0;
        while (1)
        {
            if (HAL_UART_Receive(&huart, &uart_rx_buf[rx_len], 1, 1000) == HAL_TIMEOUT)
            {
                break;
            }
            rx_len++;
            if (rx_len >= UART_RX_BUF_SIZE)
            {
                break;
            }
            if (uart_rx_buf[rx_len-1] == 0x92) // 收到校验位表示数据接收完整
            {
                break;
            }
        }
        if (rx_len > 0)
        {
            // 处理接收到的数据
            // ...
        }

        // 发送指令到串口屏
        uint8_t cmd[] = {0x55, 0x03, 0x00, 0x03, 0x01, 0xf8};
        HAL_UART_Transmit(&huart, cmd, sizeof(cmd), 1000);
        HAL_Delay(1000); // 延时等待串口屏执行指令
    }
}

void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

    /** Configure the main internal regulator output voltage 
    */
    __HAL_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
    RCC_OscInitStruct.PLL.PLLM = 16;
    RCC_OscInitStruct.PLL.PLLN = 336;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
    RCC_OscInitStruct.PLL.PLLQ = 7;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
        Error_Handler();
    }
    /** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers 
    */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                                |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
    {
        Error_Handler();
    }
}

static void MX_USART3_UART_Init(void)
{
    huart.Instance = USART3;
    huart.Init.BaudRate = 9600;
    huart.Init.WordLength = UART_WORDLENGTH_8B;
    huart.Init.StopBits = UART_STOPBITS_1;
    huart.Init.Parity = UART_PARITY_NONE;
    huart.Init.Mode = UART_MODE_TX_RX;
    huart.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart.Init.OverSampling = UART_OVERSAMPLING_16;
    if (HAL_UART_Init(&huart) != HAL_OK)
    {
        Error_Handler();
    }
}

void Error_Handler(void)
{
    while(1) {}
}

#ifdef  USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{
    /* User can add his own implementation to report the file name and line number,
       ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
}
#endif /* USE_FULL_ASSERT */

在上述代码中，我们使用USART3初始化了STM32F407ZGT6的串口功能，并通过HAL库提供的HAL_UART_Transmit和HAL_UART_Receive函数实现了与tjc8048k070_011串口屏之间的通信。在主函数中，我们首先发送初始化命令到串口屏，然后发送一个显示字符串的命令，并通过HAL_UART_Receive函数接收串口屏发回的数据，最后循环发送一个指令到串口屏并延时等待其执行。

需要注意的是，上述代码仅为示例代码，实际使用时需要根据具体的需求进行修改和调试。另外，需要根据tjc8048k070_011串口屏的通信协议文档来设置正确的波特率、校验位等参数，以确保STM32F407ZGT6与串口屏之间的通信正常。