在CC1310 rfPacketRx例程中RF接收回调函数中加入UART后程序就跑飞了

大家好！在《CC1310 ti\simplelink_cc13x0_sdk_1_40_00_10\examples\nortos\CC1310_LAUNCHXL\drivers\rfPacketRx》例程中

RF接收回调函数callback中加入UART_write后程序就跑飞了，会是什么原因，怎么解决？

下面是 《rfPacketRx_nortos.c 》文件内容

/***** Includes *****/
#include <stdlib.h>
#include <assert.h>

/* Drivers */
#include <ti/drivers/rf/RF.h>
#include <ti/drivers/PIN.h>

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

#include "RFQueue.h"
#include "smartrf_settings/smartrf_settings.h"

/* Pin driver handle */
static PIN_Handle ledPinHandle;
static PIN_State ledPinState;

/*
* Application LED pin configuration table:
* - All LEDs board LEDs are off.
*/
PIN_Config pinTable[] =
{
Board_PIN_LED2 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
PIN_TERMINATE
};

/***** Defines *****/
#define RX_TASK_STACK_SIZE 1024
#define RX_TASK_PRIORITY 2

/* Packet RX Configuration */
#define DATA_ENTRY_HEADER_SIZE 8 /* Constant header size of a Generic Data Entry */
#define MAX_LENGTH 30 /* Max length byte the radio will accept */
#define NUM_DATA_ENTRIES 2 /* NOTE: Only two data entries supported at the moment */
#define NUM_APPENDED_BYTES 2 /* The Data Entries data field will contain:
* 1 Header byte (RF_cmdPropRx.rxConf.bIncludeHdr = 0x1)
* Max 30 payload bytes
* 1 status byte (RF_cmdPropRx.rxConf.bAppendStatus = 0x1) */

/***** Prototypes *****/
static void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e);

/***** Variable declarations *****/
static RF_Object rfObject;
static RF_Handle rfHandle;

/* Buffer which contains all Data Entries for receiving data.
* Pragmas are needed to make sure this buffer is 4 byte aligned (requirement from the RF Core) */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_ALIGN (rxDataEntryBuffer, 4);
static uint8_t rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES,
MAX_LENGTH,
NUM_APPENDED_BYTES)];
#elif defined(__IAR_SYSTEMS_ICC__)
#pragma data_alignment = 4
static uint8_t rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES,
MAX_LENGTH,
NUM_APPENDED_BYTES)];
#elif defined(__GNUC__)
static uint8_t rxDataEntryBuffer [RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES,
MAX_LENGTH, NUM_APPENDED_BYTES)] __attribute__ ((aligned (4)));
#else
#error This compiler is not supported.
#endif

/* Receive dataQueue for RF Core to fill in data */
static dataQueue_t dataQueue;
static rfc_dataEntryGeneral_t* currentDataEntry;
static uint8_t packetLength;
static uint8_t* packetDataPointer;

//static PIN_Handle pinHandle;

static uint8_t packet[MAX_LENGTH + NUM_APPENDED_BYTES - 1]; /* The length byte is stored in a separate variable */

UART_Handle uart;   // 串口句柄定义为全局型

/***** Function definitions *****/

void *mainThread(void *arg0)
{
const char echoPrompt[] = "Echoing characters:\r\n";

UART_Params uartParams;

RF_Params rfParams;
RF_Params_init(&rfParams);

UART_init();

/* Create a UART with data processing off. */
UART_Params_init(&uartParams);
uartParams.writeDataMode = UART_DATA_BINARY;
uartParams.readDataMode = UART_DATA_BINARY;
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);
}                                                                                               //上面黑体加粗的部分为uart初始化

UART_write(uart, echoPrompt, sizeof(echoPrompt));   //执行这个函数都是正常的

/* Open LED pins */
ledPinHandle = PIN_open(&ledPinState, pinTable);
if (ledPinHandle == NULL)
{
while(1);
}

if( RFQueue_defineQueue(&dataQueue,
rxDataEntryBuffer,
sizeof(rxDataEntryBuffer),
NUM_DATA_ENTRIES,
MAX_LENGTH + NUM_APPENDED_BYTES))
{
/* Failed to allocate space for all data entries */
while(1);
}

/* Modify CMD_PROP_RX command for application needs */
RF_cmdPropRx.pQueue = &dataQueue; /* Set the Data Entity queue for received data */
RF_cmdPropRx.rxConf.bAutoFlushIgnored = 1; /* Discard ignored packets from Rx queue */
RF_cmdPropRx.rxConf.bAutoFlushCrcErr = 1; /* Discard packets with CRC error from Rx queue */
RF_cmdPropRx.maxPktLen = MAX_LENGTH; /* Implement packet length filtering to avoid PROP_ERROR_RXBUF */
RF_cmdPropRx.pktConf.bRepeatOk = 1;
RF_cmdPropRx.pktConf.bRepeatNok = 1;

/* Request access to the radio */
rfHandle = RF_open(&rfObject, &RF_prop, (RF_RadioSetup*)&RF_cmdPropRadioDivSetup, &rfParams);

/* Set the frequency */
RF_postCmd(rfHandle, (RF_Op*)&RF_cmdFs, RF_PriorityNormal, NULL, 0);

/* Enter RX mode and stay forever in RX */
RF_runCmd(rfHandle, (RF_Op*)&RF_cmdPropRx, RF_PriorityNormal, &callback, IRQ_RX_ENTRY_DONE);

while(1);
}

void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e)
{
if (e & RF_EventRxEntryDone)
{
/* Toggle pin to indicate RX */
PIN_setOutputValue(ledPinHandle, Board_PIN_LED2,!PIN_getOutputValue(Board_PIN_LED2));

/* Get current unhandled data entry */
currentDataEntry = RFQueue_getDataEntry();

/* Handle the packet data, located at &currentDataEntry->data:
* - Length is the first byte with the current configuration
* - Data starts from the second byte */
packetLength = *(uint8_t*)(&currentDataEntry->data);
packetDataPointer = (uint8_t*)(&currentDataEntry->data + 1);

/* Copy the payload + the status byte to the packet variable */
memcpy(packet, packetDataPointer, (packetLength + 1));

UART_write(uart, packet, (packetLength + 1));    //执行这个uart发送函数，程序就跑飞了，是什么原因？

RFQueue_nextEntry();
}
}

建议你不要把UART_write放在Callback函数中。

是的，不建议您将UART_write放在Callback函数中，现在是必须要放吗？