HAL_UART_Transmit_DMA 发送字符串数组

以下是使用HAL_UART_Transmit_DMA发送字符串数组的示例代码：

#include "stm32l1xx_hal.h"

#define UART_BUFFER_SIZE 100

UART_HandleTypeDef huart;

void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{
    // UART transmit complete callback function
    // This function is called when the DMA transfer is complete
    // You can perform any necessary operations here
}

void HAL_UART_Transmit_DMA_StringArray(uint8_t *strArray[], uint16_t arraySize)
{
    // Calculate the total length of the string array
    uint16_t totalLength = 0;
    for (uint16_t i = 0; i < arraySize; i++)
    {
        totalLength += strlen((char *)strArray[i]);
    }

    // Create a buffer to hold the concatenated string
    uint8_t buffer[UART_BUFFER_SIZE];
    memset(buffer, 0, UART_BUFFER_SIZE);

    // Concatenate the strings into the buffer
    uint16_t bufferIndex = 0;
    for (uint16_t i = 0; i < arraySize; i++)
    {
        strcpy((char *)(buffer + bufferIndex), (char *)strArray[i]);
        bufferIndex += strlen((char *)strArray[i]);
    }

    // Start the DMA transfer
    HAL_UART_Transmit_DMA(&huart, buffer, totalLength);
}

使用上述代码，你可以通过调用`HAL_UART_Transmit_DMA_StringArray`函数来发送一个字符串数组。该函数会将字符串数组中的所有字符串连接起来，并使用DMA进行传输。