关于ZStack-CC2530-2.3.0-1.4.0中simpleApp例子的 终端节点如何向协调器发送数据，以及数据的接收

上一篇文章写到终端节点向应用层发送绑定确认，即zb_BindConfirm函数，我们可以看下源代码。

 

void zb_BindConfirm( uint16 commandId, uint8 status )
{
  (void)commandId;

  if ( ( status == ZB_SUCCESS )&& ( myAppState == APP_START ) )//条件成立
  {
    myAppState =APP_BOUND;//将应用状态修改为 绑定状态

    //Startreporting sensor values
   myApp_StartReporting();//开始传输函数
  }
  else
  {
    // Continueto discover a collector
   osal_start_timerEx( sapi_TaskID, MY_FIND_COLLECTOR_EVT,myBindRetryDelay );
  }

 

查看传输函数源代码：

 

void myApp_StartReporting( void )
{
  osal_start_timerEx( sapi_TaskID,MY_REPORT_TEMP_EVT, myTempReportPeriod );//传输温度事件
  osal_start_timerEx( sapi_TaskID,MY_REPORT_BATT_EVT, myBatteryCheckPeriod );//传输电压事件
  HalLedSet( HAL_LED_1, HAL_LED_MODE_ON);//点亮LED_1;

}

我们看终端节点sapi层如何处理这两个时间，首先找到SAPI_ProcessEvent函数中的：

 

 if ( events & ( ZB_USER_EVENTS) )
  {
    // Userevents are passed to the application
#if ( SAPI_CB_FUNC )
   zb_HandleOsalEvent( events );//事件处理函数
#endif

    // Do notreturn here, return 0 later
  }

 

进入到函数中去：

 

void zb_HandleOsalEvent( uint16 event )
{
  uint8 pData[2];

  if ( event & MY_START_EVT)
  {
   zb_StartRequest();
  }
  if ( event & MY_REPORT_TEMP_EVT)
  {
    // Read andreport temperature value
    pData[0] =TEMP_REPORT;//要发送的数据的类型
    pData[1]=  myApp_ReadTemperature();//利用此函数接收读取的温度值
   zb_SendDataRequest( 0xFFFE, SENSOR_REPORT_CMD_ID, 2, pData, 0,AF_ACK_REQUEST, 0 );//发送数据
   osal_start_timerEx( sapi_TaskID, MY_REPORT_TEMP_EVT,myTempReportPeriod );
  }

  if ( event &MY_REPORT_BATT_EVT )
  {
    // Readbattery value
    // Ifbattery level low, report battery value
    pData[0] =BATTERY_REPORT;//要发送的数据的类型
    pData[1]=  myApp_ReadBattery();//利用此函数接收读取的温度值
   zb_SendDataRequest( 0xFFFE, SENSOR_REPORT_CMD_ID, 2, pData, 0,AF_ACK_REQUEST, 0 );//发送数据
   osal_start_timerEx( sapi_TaskID, MY_REPORT_BATT_EVT,myBatteryCheckPeriod );
  }

  if ( event &MY_FIND_COLLECTOR_EVT )
  {
    // Find andbind to a collector device
   zb_BindDevice( TRUE, SENSOR_REPORT_CMD_ID, (uint8 *)NULL );
  }

}

 

好，然后我们看下协调器是怎么接收数据的,首先切换工作空间为协调器模式，查看sapi.c文件，查看SAPI_ProcessEvent函数，找到：

case AF_INCOMING_MSG_CMD:
         pMSGpkt = (afIncomingMSGPacket_t *) pMsg;
         SAPI_ReceiveDataIndication(pMSGpkt->srcAddr.addr.shortAddr,pMSGpkt->clusterId,
                                   pMSGpkt->cmd.DataLength,pMSGpkt->cmd.Data);//协调器在此函数中进行数据的接收工作。
         break;

 

查看此函数：

 

void SAPI_ReceiveDataIndication( uint16 source, uint16 command,uint16 len, uint8 *pData  )
{
#if defined ( MT_SAPI_CB_FUNC )
 
  if ( SAPICB_CHECK( SPI_CB_SAPI_RCV_DATA_IND ))
  {
   zb_MTCallbackReceiveDataIndication( source, command, len,pData  );
  }
  else
#endif  //MT_SAPI_CB_FUNC
  {
#if ( SAPI_CB_FUNC )//编译通过
   zb_ReceiveDataIndication( source, command, len,pData  );
#endif
  }
}

 

查看源代码：

 

oid zb_FindDeviceConfirm( uint8 searchType, uint8 *searchKey,uint8 *result )
{
}

CONST uint8 strDevice[] = "Device:0x";
CONST uint8 strTemp[] = "Temp: ";
CONST uint8 strBattery[] = "Battery: ";
void zb_ReceiveDataIndication( uint16 source, uint16 command,uint16 len, uint8 *pData  )
{
  uint8 buf[32];
  uint8 *pBuf;
  uint8 tmpLen;
  uint8 sensorReading;

  if (command ==SENSOR_REPORT_CMD_ID)//条件成立
  {
    // Receivedreport from a sensor
   sensorReading = pData[1];

    // Iftool available, write to serial port

    tmpLen =(uint8)osal_strlen( (char*)strDevice );
    pBuf =osal_memcpy( buf, strDevice, tmpLen );
    _ltoa(source, pBuf, 16 );
    pBuf +=4;
    *pBuf++ = '';

    if (pData[0] == BATTERY_REPORT )//如果是电压传送，执行下面函数
    {
     tmpLen = (uint8)osal_strlen( (char*)strBattery );
     pBuf = osal_memcpy( pBuf, strBattery, tmpLen );

     *pBuf++ = (sensorReading / 10 ) +'0';    //convent msb to ascii
     *pBuf++ ='.';                           // decimal point ( battery reading is in units of 0.1 V
     *pBuf++ = (sensorReading % 10 ) +'0';    //convert lsb to ascii
     *pBuf++ = ' ';
     *pBuf++ = 'V';
    }
   else//如果是温度传送，执行下面函数
    {
     tmpLen = (uint8)osal_strlen( (char*)strTemp );
     pBuf = osal_memcpy( pBuf, strTemp, tmpLen );

     *pBuf++ = (sensorReading / 10 ) +'0';    //convent msb to ascii
     *pBuf++ = (sensorReading % 10 ) +'0';    //convert lsb to ascii
     *pBuf++ = ' ';
     *pBuf++ = 'C';
    }

    *pBuf++ ='\r';
    *pBuf++ ='\n';
    *pBuf ='\0';

#if defined( MT_TASK)//若定义了MT_TASK ，则执行下面函数即串口函数，发送到PC机上显示。
    debug_str((uint8 *)buf );
#endif

    // canalso write directly to uart

  }
}

到此为止，终端节点向协调器发送数据，协调器接收数据并发送到串口 

完成。。。