HELLO.  

I have one remote and One controller.  

It takes about 40 ms to send out data from Remote  to controller.  and the controller send out feedback data delayed for  5 ms after received the data from remote.

the remote start RX after sending out data. so there is 5 ms gap time for remote and controller to read feedback data.  

But it fail. 

remote can not get the data.  and the controller really send out the  feedback data.

//CODE of REMTOTE. . IF DONE TX . 。Int flag  . and enable feedback then startRX.

    if(Sflag&SI4463_ST_TXDNE)                        
    {
            BeginLog(BUSRT_LOG_LVL_STATE);
            LogMsg("TxDone");            
            EndLog();
            SI446X_RX_FIFO_RESET( );
            if(FEATURE_EN_FDBAK&(pDTEntry->pRFPara->feature))
            {
                SIStartRx(pDTEntry->pRFPara->RFChannel,sizeof(TTXFrame));
            }
            else                    
            {
             *ulNotificationValue |= FAST_RX_DNE_EVENT;      
            }
    }    

//Controller.

//read an package from device.
    if(Sflag&(SI4463_ST_RXDNE))
    {
        SIReadDataFromDevice((uint8_t*)&rxMsg,&revLth);        
        if(FrmCRCCheck(&rxMsg) == 0x00)
        {                
            //do something herer

         //feedback.
            if(feature&FEATURE_EN_FDBAK)
            {
                vTaskDelay(5);//Delay about 5 ms then send data 
                //SendBack the data to Devcie.    
                LogMSG(BUSRT_LOG_LVL_STATE,"Send FB Data to Remote");    
                if(SISendOutData(pDTEntry->pRFPara->RFChannel,(uint8_t*)&txMsg,sizeof(TTransFrame)) == BFALSE)
                {                    
                    if(SISendOutData(pDTEntry->pRFPara->RFChannel,(uint8_t*)&txMsg,sizeof(TTransFrame)) == BFALSE)
                    {                    
                        pDTEntry->pRamRetain->SWResetType = SFRESET_LINK_STUCK;
                    }
                }
            }

else

{

//start rx again

}

    
    }

HI  .

I want to get a good performance of SI4463 communication.   The setting attached  now reach to  300 meters. what can i change to get longer distance.?  It shall be compatible with the setting in use.