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在学习zigbee的过程中,通过串口助手给串口发送一个数据后,按我原先的理解,就会执行一次回调函数 代码如下:
#include "OSAL.h"
#include "AF.h"
#include "ZDApp.h"
#include "ZDObject.h"
#include "ZDProfile.h"
#include <string.h>
#include "Coordinator.h"
#include "DebugTrace.h"
#if !defined( WIN32 )
#include "OnBoard.h"
#endif
/* HAL */
#include "hal_lcd.h"
#include "hal_led.h"
#include "hal_key.h"
#include "hal_uart.h"
unsigned char rmsg[16];
static void ReceiveMessage(uint8 port,uint8 event);
uint16 stringTohex(unsigned char rmsg[16]);
const cId_t GenericApp_ClusterList[GENERICAPP_MAX_CLUSTERS] =
{
GENERICAPP_CLUSTERID
};
const SimpleDescriptionFormat_t GenericApp_SimpleDesc =
{
GENERICAPP_ENDPOINT, // int Endpoint;
GENERICAPP_PROFID, // uint16 AppProfId[2];
GENERICAPP_DEVICEID, // uint16 AppDeviceId[2];
GENERICAPP_DEVICE_VERSION, // int AppDevVer:4;
GENERICAPP_FLAGS, // int AppFlags:4;
GENERICAPP_MAX_CLUSTERS, // byte AppNumInClusters;
(cId_t *)GenericApp_ClusterList, // byte *pAppInClusterList;
GENERICAPP_MAX_CLUSTERS, // byte AppNumInClusters;
(cId_t *)GenericApp_ClusterList // byte *pAppInClusterList;
};
endPointDesc_t GenericApp_epDesc;
byte GenericApp_TaskID;
byte GenericApp_TransID;
void GenericApp_MessageMSGCB( afIncomingMSGPacket_t *pckt );
void GenericApp_SendTheMessage( void );
void GenericApp_Init( uint8 task_id )
{
halUARTCfg_t uartConfig;
GenericApp_TaskID = task_id;
//GenericApp_NwkState = DEV_INIT;
GenericApp_TransID = 0;
// Device hardware initialization can be added here or in main() (Zmain.c).
// If the hardware is application specific - add it here.
// If the hardware is other parts of the device add it in main().
//GenericApp_DstAddr.addrMode = (afAddrMode_t)AddrNotPresent;
//GenericApp_DstAddr.endPoint = 0;
//GenericApp_DstAddr.addr.shortAddr = 0;
// Fill out the endpoint description.
GenericApp_epDesc.endPoint = GENERICAPP_ENDPOINT;
GenericApp_epDesc.task_id = &GenericApp_TaskID;
GenericApp_epDesc.simpleDesc
= (SimpleDescriptionFormat_t *)&GenericApp_SimpleDesc;
GenericApp_epDesc.latencyReq = noLatencyReqs;
// Register the endpoint description with the AF
afRegister( &GenericApp_epDesc );
uartConfig.configured =TRUE;
uartConfig.baudRate =HAL_UART_BR_115200;
uartConfig.flowControl =FALSE;
uartConfig.callBackFunc=ReceiveMessage; //串口回调函数的初始化
HalUARTOpen(0,&uartConfig);
}
uint16 GenericApp_ProcessEvent( byte task_id, uint16 events )
{
afIncomingMSGPacket_t *MSGpkt;
if ( events & SYS_EVENT_MSG )
{
MSGpkt = (afIncomingMSGPacket_t *)osal_msg_receive( GenericApp_TaskID );
while ( MSGpkt )
{
switch ( MSGpkt->hdr.event )
{
case AF_INCOMING_MSG_CMD:
GenericApp_MessageMSGCB(MSGpkt);
break;
default:
break;
}
// Release the memory
osal_msg_deallocate( (uint8 *)MSGpkt );
// Next
MSGpkt = (afIncomingMSGPacket_t *)osal_msg_receive( GenericApp_TaskID );
}
// return unprocessed events
return (events ^ SYS_EVENT_MSG);
}
// Discard unknown events
return 0;
}
void GenericApp_MessageMSGCB( afIncomingMSGPacket_t *pkt )
{
//unsigned char buffer[2] ={0x0A,0X0D};
RFTX rftx;
//unsigned char buffer[10];
switch ( pkt->clusterId )
{
case GENERICAPP_CLUSTERID:
//osal_memcpy(buffer,pkt->cmd.Data,10);
//HalUARTWrite(0,buffer,10);
osal_memcpy(&rftx,pkt->cmd.Data,sizeof(rftx));
HalUARTWrite(0,(uint8*)&rftx,sizeof(rftx));
//HalUARTWrite(0,buffer,2);
break;
}
}
static void ReceiveMessage(uint8 port,uint8 event)
{
HalUARTRead(0,rmsg,16);
if(rmsg[0]=='&'&&rmsg[15]=='&')
{
afAddrType_t my_DstAddr;
my_DstAddr.addrMode=(afAddrMode_t)Addr16Bit;
my_DstAddr.endPoint=GENERICAPP_ENDPOINT;
my_DstAddr.addr.shortAddr=stringTohex(rmsg);
AF_DataRequest(&my_DstAddr,
&GenericApp_epDesc,
GENERICAPP_CLUSTERID,
sizeof(rmsg),
//1,
(uint8 *)&rmsg,
//theMessageData,
//(uint8 *)&x,
&GenericApp_TransID,
AF_DISCV_ROUTE,
AF_DEFAULT_RADIUS);
}
//x++;
}
uint16 stringTohex(unsigned char rmsg[16])
{
uint16 hex;
if(rmsg[4]<='9'&&rmsg[4]>='0')
hex=(rmsg[4]-'0')*16*16*16;
if(rmsg[4]<='f'&&rmsg[4]>='a')
hex=((rmsg[4]-'a')+10)*16*16*16;
if(rmsg[4]<='F'&&rmsg[4]>='A')
hex=((rmsg[4]-'A')+10)*16*16*16;
if(rmsg[5]<='9'&&rmsg[5]>='0')
hex=(rmsg[5]-'0')*16*16+hex;
if(rmsg[5]<='f'&&rmsg[5]>='a')
hex=((rmsg[5]-'a')+10)*16*16+hex;
if(rmsg[5]<='F'&&rmsg[5]>='A')
hex=((rmsg[5]-'A')+10)*16*16+hex;
if(rmsg[6]<='9'&&rmsg[6]>='0')
hex=(rmsg[6]-'0')*16+hex;
if(rmsg[6]<='f'&&rmsg[6]>='a')
hex=((rmsg[6]-'a')+10)*16+hex;
if(rmsg[6]<='F'&&rmsg[6]>='A')
hex=((rmsg[6]-'A')+10)*16+hex;
if(rmsg[7]<='9'&&rmsg[7]>='0')
hex=(rmsg[7]-'0')+hex;
if(rmsg[7]<='f'&&rmsg[7]>='a')
hex=((rmsg[7]-'a')+10)+hex;
if(rmsg[7]<='F'&&rmsg[7]>='A')
hex=((rmsg[7]-'A')+10)+hex;
return hex;
}
但是下载到板子之后,我却发现发送一次数据给串口,会一直不停的调用回调函数
解决办法 :
找到static void HalUARTPollDMA(void)函数
将该函数中的///防止串口回调函数一直执行
if (dmaCfg.txMT)
{
dmaCfg.txMT = FALSE;
evt |= HAL_UART_TX_EMPTY;
}
if (dmaCfg.txMT)
{
dmaCfg.txMT = FALSE;
evt |= HAL_UART_TX_EMPTY;
}
注释掉就行