编写SampleApp_HandleKeys函数，处理HAL_KEY_SW_3按键事件：通过单点传送的方式，把字符串“123”发送给协调器。 #define SAMPLEAPP_SENDTOCOORD_CLUSTERID 3 afAddrType_t SampleApp_Coord_DstAddr; void SampleApp_HandleKeys( uint8 shift, uint8 keys ) { (void)shift; // Intentionally unreferenced parameter if ( keys & HAL_KEY_SW_1 ) { /* This key sends the Flash Command is sent to Group 1. * This device will not receive the Flash Command from this * device (even if it belongs to group 1). */ SampleApp_SendFlashMessage( SAMPLEAPP_FLASH_DURATION ); } //在此处添加你的代码： }

以下是SampleApp_HandleKeys函数的修改版，以处理HAL_KEY_SW_3按键事件，并通过单点传送的方式，将字符串“123”发送到协调器：

void SampleApp_HandleKeys( uint8 shift, uint8 keys )
{
  (void)shift;  // Intentionally unreferenced parameter

  if ( keys & HAL_KEY_SW_1 )
  {
    /* This key sends the Flash Command is sent to Group 1.
     * This device will not receive the Flash Command from this
     * device (even if it belongs to group 1).
     */
    SampleApp_SendFlashMessage( SAMPLEAPP_FLASH_DURATION );
  }

  // Handle HAL_KEY_SW_3 event
  if ( keys & HAL_KEY_SW_3 )
  {
    // Set destination address to coordinator
    SampleApp_Coord_DstAddr.addrMode = (afAddrMode_t)Addr16Bit;
    SampleApp_Coord_DstAddr.endPoint = SAMPLEAPP_ENDPOINT;
    SampleApp_Coord_DstAddr.addr.shortAddr = 0x0000; // Set to coordinator's short address

    // Send "123" to coordinator
    uint8 data[] = {'1', '2', '3'};
    afStatus_t status = AF_DataRequest(&SampleApp_Coord_DstAddr, &SampleApp_epDesc,
                                       SAMPLEAPP_SENDTOCOORD_CLUSTERID, sizeof(data), data,
                                       &SampleApp_TransID, AF_DISCV_ROUTE, AF_DEFAULT_RADIUS);
    if (status != afStatus_SUCCESS)
    {
      // Failed to send data
    }
  }
}

请注意，此修改版本的代码需要在其他部分调用SampleApp_SendFlashMessage函数，并且需要定义SAMPLEAPP_ENDPOINT和SampleApp_epDesc。