STM32H5 I3C Target don't send ACK when receive header

[Sunwaz]

My I3C target don't send ACK after controller send an arbitration header ,and it will generate a DOVER flag and ERRF flag.

ex.

Send HAL_I3C_Ctrl_IsDeviceI3C_Ready before controller transmit data.

Send HAL_I3C_DIRECTION_READ 

and so on

[Foued_KH]

Hello @Sunwaz ,

Did you assign a dynamic address for the slave before starting the I3C communication ?

Let me know !
Foued

[Sunwaz]

Hi @Foued_KH 

 Yes.

I can enter I3C interrupt handle.But it will generate a HAL_I3C_ERROR_DOVER or HAL_I3C_ERROR_SIZE failed.

void bsp_i3c_config( void ){
 aContextBuffers_Tmp.RxBuf.pBuffer = i3cRxBuffer_Tmp;
 aContextBuffers_Tmp.RxBuf.Size = sizeof(i3cRxBuffer_Tmp);
 aContextBuffers_Tmp.TxBuf.pBuffer = i3cTxBuffer_Tmp;
 aContextBuffers_Tmp.TxBuf.Size = sizeof(i3cTxBuffer_Tmp);

 aContextBuffers.RxBuf.pBuffer = i3cRxBuffer;
 aContextBuffers.RxBuf.Size = sizeof(i3cTxBuffer);
 aContextBuffers.CtrlBuf.pBuffer = i3cCtrlBuffer;
 aContextBuffers.CtrlBuf.Size = 1;

if(HAL_I3C_ActivateNotification(&hi3c1 , &aContextBuffers_Tmp , HAL_I3C_ALL_TGT_ITS) != HAL_OK){
  TARGT_DEBUG("[i3c error]start active notification failed!\r\n");
  Error_Handler();
}

if(HAL_I3C_Tgt_HotJoinReq_IT(&hi3c1) != HAL_OK){
 TARGT_DEBUG("[i3c error]enable hot join function failed!\r\n");
 Error_Handler();
 }
}

void bsp_i3c_app( void ){
if(i3c_Event & 0x01){
    if(LL_I3C_IsEnabledOwnDynAddress(hi3c1.Instance)){
       TARGT_DEBUG("[i3c event]update Dynamic Address [%d]\r\n",LL_I3C_GetOwnDynamicAddress(hi3c1.Instance));
      if(HAL_I3C_Tgt_Receive_DMA(&hi3c1, &aContextBuffers) != HAL_OK){
        TARGT_DEBUG("[i3c error]enable receive it failed!\r\n");
        Error_Handler();
      }
     i3c_Event &=~ (0x01);
  }
 }else if(i3c_Event & 0x02){
   bsp_i3c_errorHandle();
   i3c_Event &=~ 0x02;
 }else if(i3c_Event & 0x04){
    uint16_t bufferSize = LL_I3C_GetXferDataCount(hi3c1.Instance);
    if( bufferSize != 0){
      TARGT_DEBUG("[i3c event]Rx data done!Size [%d]\r\n\t[Rx]%s\r\n",bufferSize,aContextBuffers.RxBuf.pBuffer);
      memset(aContextBuffers.RxBuf.pBuffer , 0 , bufferSize);
      bsp_i3c_ProtocolParsing(aContextBuffers.RxBuf.pBuffer , bufferSize);
    }
    if(HAL_I3C_Tgt_Receive_DMA(&hi3c1, &aContextBuffers) != HAL_OK){
       TARGT_DEBUG("[i3c error]enable receive it failed!\r\n");
       Error_Handler();
    }
    i3c_Event &=~ 0X04;
  }
}

[Sunwaz]

When the controller send this command, the target will report HAL_I3C_ERROR_DOVER code.

[Sunwaz]

And when the dynamic address of the target does not match,it will not respond to this command.