CC1310 串口回调函数问题

回调函数写成这种形式：void Uart_ReadCallback(UART_Handle handle, void *rxBuf, size_t size)

我想知道 rxBuf和size这两个参数分别代表什么含义？

在接收测试中，分别用两种write，发一个字节都没问题，但是我同时发两个字节就会卡死，真是非常纳闷。

#include <stdint.h>
#include <stddef.h>

/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/UART.h>

/* Example/Board Header files */
#include "Board.h"
uint8_t a = 0;
static UART_Handle uart;
void Uart_ReadCallback(UART_Handle handle, void *rxBuf, size_t size)
{UART_write(handle, (uint8_t*)rxBuf, 1);//UART_write(handle, &size, 1);UART_read(uart, &a, 1);
}
/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{charinput;const char  echoPrompt[] = "Echoing characters:\r\n";UART_Params uartParams;/* Call driver init functions */GPIO_init();UART_init();/* Configure the LED pin */GPIO_setConfig(Board_GPIO_LED0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);/* Turn on user LED */GPIO_write(Board_GPIO_LED0, Board_GPIO_LED_ON);/* Create a UART with data processing off. */UART_Params_init(&uartParams);uartParams.writeDataMode = UART_DATA_BINARY;uartParams.readDataMode = UART_DATA_BINARY;uartParams.readMode = UART_MODE_CALLBACK;uartParams.readCallback = Uart_ReadCallback;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));UART_read(uart, &input, 1);/* Loop forever echoing */while (1) {//UART_read(uart, &input, 1);//UART_write(uart, &input, 1);}
}

Felix ZF：

可以阅读下面的文档，详细了解。

我按照文档中的代码段，进行了测试，可以实现多个字节的发送。

测试代码如下：

/*
 *  ======== uartecho.c ========
 */
#include <stdint.h>
#include <stddef.h>

/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/UART.h>

/* Example/Board Header files */
#include "Board.h"

#define MAX_NUM_RX_BYTES    1000   // Maximum RX bytes to receive in one go
#define MAX_NUM_TX_BYTES    1000   // Maximum TX bytes to send in one go
uint32_t wantedRxBytes;            // Number of bytes received so far
uint8_t rxBuf[MAX_NUM_RX_BYTES];   // Receive buffer
uint8_t txBuf[MAX_NUM_TX_BYTES];   // Transmit buffer
// Read callback function
static void readCallback(UART_Handle handle, void *rxBuf, size_t size)
{
    size_t i = 0;

    // Make sure we received all expected bytes
    if (size == wantedRxBytes) {
        // Copy bytes from RX buffer to TX buffer
       for(i = 0; i < size; i++)
           txBuf[i] = ((uint8_t*)rxBuf)[i];
       // Echo the bytes received back to transmitter
       UART_write(handle, txBuf, size);
       // Start another read, with size the same as it was during first call to
       // UART_read()
       UART_read(handle, rxBuf, wantedRxBytes);
    }
    else {
        // Handle error or call to UART_readCancel()
    }
}
// Write callback function
static void writeCallback(UART_Handle handle, void *rxBuf, size_t size)
{
    // Do nothing
}

/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    UART_Handle handle;
    UART_Params params;
    // Init UART
    UART_init();
    // Specify non-default parameters
    UART_Params_init(&params);
    params.baudRate      = 115200;
    params.writeMode     = UART_MODE_CALLBACK;
    params.writeDataMode = UART_DATA_BINARY;
    params.writeCallback = writeCallback;
    params.readMode      = UART_MODE_CALLBACK;
    params.readDataMode  = UART_DATA_BINARY;
    params.readCallback  = readCallback;
    // Open the UART and initiate the first read
    handle = UART_open(Board_UART0, &params);
    wantedRxBytes = 6;
    int rxBytes = UART_read(handle, rxBuf, wantedRxBytes);
    while(true); // Wait forever
}

 

user4959119：

回复 Felix ZF:

你好FZ，文档我看了还是不理解，我看咱们回调函数里面的参数size还可以配合for循环使用，按中断来说来一个字节中断一次，size应该永远为1吧，在for里面看起来就像一次可以接收多个数据然后再处理，这个问题请解释一下吧。。。

user4959119：

回复 Felix ZF:

哦买嘎，了然，thank you！

user5322468：

回复 Felix ZF:

我的串口接收到数据，进入处理，处理里面有flash操作，flash 会导致串口的接收回调再也无法接收到中断数据。但是串口却在正常运行（串口在发送数据，无法接收中断回调）。