STM32Wl getting sent Data with OnRxDone

[GHube.1]

Hello there!

I just modified the PingPong example for the NUCLEO WL55JC1 Board so I have one defined transmitter and one receiver.

As you can see in the picture, the Master transmits continuously the bytes "PING" (wich I want to replace later).

/* Send the next PING frame */
            Buffer[0] = 'P';
            Buffer[1] = 'I';
            Buffer[2] = 'N';
            Buffer[3] = 'G';
            /* We fill the buffer with numbers for the payload */
            for (i = 4; i < BufferSize; i++)
            {
              Buffer[i] = i - 4;
            }
            APP_LOG(TS_ON, VLEVEL_L, "...PING\n\r");
 
            APP_LOG(TS_ON, VLEVEL_L, "Master Tx start\n\r");
 
            Radio.SetChannel(RF_FREQUENCY);
 
            /* Add delay between TX and RX =
            time Busy_signal is ON in RX opening window */
            HAL_Delay(Radio.GetWakeupTime() + TCXO_WORKAROUND_TIME_MARGIN);
 
            Radio.Send(Buffer, BufferSize);

The transmition works and the receiver gets into the command "OnRxDone", so they're both synchronized.

After OnRxDone status = TX means its again doing a Radio.RX. If this works, again OnRxDone, and so on. But now I want to output the sent data on a COM-Port.

OnRxDone command:

static void OnRxDone(uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
{
 
 
#if defined(USE_BSP_DRIVER)
            BSP_LED_Off(LED_RED) ;
            BSP_LED_Toggle(LED_GREEN) ;
#elif defined(MX_BOARD_PSEUDODRIVER)
            SYS_LED_Off(SYS_LED_RED) ;
            SYS_LED_Toggle(SYS_LED_GREEN) ;
#endif /* USE_BSP_DRIVER || MX_BOARD_PSEUDODRIVER */
 
 
  APP_LOG(TS_ON, VLEVEL_L, "OnRxDone\n\r");
  APP_LOG(TS_ON, VLEVEL_L,  "RssiValue=%d dBm, SnrValue=%d\n\r", rssi, snr);
 
  Radio.Sleep();
 
  BufferSize = size;
  memcpy(Buffer, payload, BufferSize);
 
  RssiValue = rssi;
  SnrValue = snr;
  State = TX;
  UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_PingPong_Process), CFG_SEQ_Prio_0);
 
}

If I output just Buffer it's empty. Any advices?

Notes:

Thats the built-in "send" command:

* \brief Sends the buffer of size. Prepares the packet to be sent and sets
     *        the radio in transmission
     *
     * \param [IN]: buffer     Buffer pointer
     * \param [IN]: size       Buffer size
     */
    void    ( *Send )( uint8_t *buffer, uint8_t size );

and that the "rx" command:

* \brief Rx Done callback prototype.
     *
     * \param [IN] payload Received buffer pointer
     * \param [IN] size    Received buffer size
     * \param [IN] rssi    RSSI value computed while receiving the frame [dBm]
     * \param [IN] snr     SNR value computed while receiving the frame [dB]
     *                     FSK : N/A ( set to 0 )
     *                     LoRa: SNR value in dB
     */
    void    ( *RxDone )( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr );

Thanks in advance!

Regards

[Tesla DeLorean]

>>If I output just Buffer it's empty. Any advices?

Perhaps keep the receive and transmit buffers separate, and look at what payload/size actually enter with. If size is zero nothing will get copied.

In the OnRxDone() routine enqueue the payload/size data to the buffering you have for the COM Port output.

[IREMI.1]

Hi, how do you output the buffer?

in FW version 1.1.0 (available soon) buffer is output by the example as such :

 APP_LOG(TS_ON, VLEVEL_H, "payload. size=%d \n\r", size);

 for (int i = 0; i < PAYLOAD_LEN; i++)

 {

  APP_LOG(TS_OFF, VLEVEL_H, "%02X", Buffer[i]);

  if (i % 16 == 15)

  {

   APP_LOG(TS_OFF, VLEVEL_H, "\n\r");

  }

 }