CC2640串口收发

Jacktang

CC2640串口收发 [复制链接]

CC2640的串口收发很容易，直接调用协议栈中的几个函数即可

 /* Call driver init functions */
    GPIO_init();
    UART_init();

    /* Create a UART with data processing off. */
    UART_Params_init(&uartParams);
    uartParams.writeDataMode = UART_DATA_BINARY;
    uartParams.readDataMode = UART_DATA_BINARY;
    uartParams.readTimeout = 500000;//5s 5秒
    uartParams.readReturnMode = UART_RETURN_FULL;
    uartParams.readEcho = UART_ECHO_OFF;
    uartParams.baudRate = 115200;

    uart = UART_open(Board_UART0, &uartParams);

    if (uart == NULL) {
        /* UART_open() failed */
        while (1);
    }

    UART_write(uart, echoPrompt, sizeof(echoPrompt));

    /* Loop forever echoing */
    int k = 0;
    while (1) {
        k = UART_read(uart, input, 10);
        UART_write(uart, input, k);
    }

 

这几个参数的设置，可以追进去看一下

/*!
 *  @brief  Function to initialize the UART_Params struct to its defaults
 *
 *  @param  params      An pointer to UART_Params structure for
 *                      initialization
 *
 *  Defaults values are:
 *      readMode = UART_MODE_BLOCKING;
 *      writeMode = UART_MODE_BLOCKING;
 *      readTimeout = UART_WAIT_FOREVER;
 *      writeTimeout = UART_WAIT_FOREVER;
 *      readCallback = NULL;
 *      writeCallback = NULL;
 *      readReturnMode = UART_RETURN_NEWLINE;
 *      readDataMode = UART_DATA_TEXT;
 *      writeDataMode = UART_DATA_TEXT;
 *      readEcho = UART_ECHO_ON;
 *      baudRate = 115200;
 *      dataLength = UART_LEN_8;
 *      stopBits = UART_STOP_ONE;
 *      parityType = UART_PAR_NONE;
 */
extern void UART_Params_init(UART_Params *params);

readTimeout的单位是0.01毫秒级别

以及读取时的模式阻塞还是非阻塞

/*!
 *  @brief      UART return mode settings
 *
 *  This enumeration defines the return modes for UART_read() and
 *  UART_readPolling(). This mode only functions when in #UART_DATA_TEXT mode.
 *
 *  #UART_RETURN_FULL unblocks or performs a callback when the read buffer has
 *  been filled.
 *  #UART_RETURN_NEWLINE unblocks or performs a callback whenever a newline
 *  character has been received.
 *
 *  UART operation | UART_RETURN_FULL | UART_RETURN_NEWLINE |
 *  -------------- | ---------------- | ------------------- |
 *  UART_read()    | Returns when buffer is full | Returns when buffer is full or newline was read |
 *  UART_write()   | Sends data as is | Sends data with an additional newline at the end |
 *
 *  @pre        UART driver must be used in #UART_DATA_TEXT mode.
 */
typedef enum UART_ReturnMode_ {
    /*! Unblock/callback when buffer is full. */
    UART_RETURN_FULL,

    /*! Unblock/callback when newline character is received. */
    UART_RETURN_NEWLINE
} UART_ReturnMode;