TMS320F28377D: QS on F021_API: ERASE failed?

Hi Li,

Please include EALLOW before the erase function.

Thanks and regards,

Vamsi

Hi Vamsi:

    I tried your way then there is no error return from "Fapi_doBlankCheck()" function. However, through the following erasing process, I found the on-chip flash was not erased.  Please see the code below:

Fapi_StatusType FlashSectorErase(U32 SectorAddress,U16 SectorLen)
{
	U16 nRetrys = 0;		

	Fapi_StatusType oReturnCheck = Fapi_Error_Fail;
	Fapi_FlashStatusWordType oFlashStatusWord;
	uint16 repeat;
	
	SeizeFlashPump();
	watchdogDisable();
	
  //
  // Grab flash semaphore for Zone1 to enable access to flash registers.
  //
  DINT;
  EALLOW;
  DcsmCommonRegs.FLSEM.all = 0xA501;

  Flash0EccRegs.ECC_ENABLE.bit.ENABLE = 0x0;
  Flash0CtrlRegs.FRD_INTF_CTRL.bit.DATA_CACHE_EN = 0;
  Flash0CtrlRegs.FRD_INTF_CTRL.bit.PREFETCH_EN = 0;
  EDIS;

  oReturnCheck = Fapi_issueAsyncCommandWithAddress(Fapi_EraseSector,(uint32 *)SectorAddress);
  uart_len = sprintf(uart_buff, "Fapi_issueAsyncCommandWithAddress: 0x%08lx\n", SectorAddress);
  uartSendText(uart_buff, uart_len);
  //EDIS; If add EDIS here, my program will reboot, but why?

  if(oReturnCheck == Fapi_Status_Success)
  {
#if 1
    do
    {
      // Wait until FSM is done with erase sector operation
      while (Fapi_checkFsmForReady() != Fapi_Status_FsmReady)
      {
      
      }     

      if(SectorAddress != SECTOR_E_ADDR)
      {
        oReturnCheck = Fapi_doBlankCheck((uint32 *)SectorAddress,SectorLen,&oFlashStatusWord);
        uart_len = sprintf(uart_buff, "Fapi_doBlankCheck: 0x%08lx\n", SectorAddress);
        uartSendText(uart_buff, uart_len);
      }

      if (Fapi_Error_Fail == oReturnCheck)
      {
        uart_len = sprintf(uart_buff, "Fapi_doBlankCheck NOk \n");
        uartSendText(uart_buff, uart_len);    
        oReturnCheck = Fapi_issueAsyncCommandWithAddress(Fapi_EraseSector,(uint32 *)SectorAddress);
        uart_len = sprintf(uart_buff, "Fapi_issueAsyncCommandWithAddress: 0x%08lx\n", SectorAddress);
        uartSendText(uart_buff, uart_len);        
        nRetrys ++;
      }

    }while((nRetrys < 5)&&(Fapi_Error_Fail == oReturnCheck));
#endif
  }

	Fapi_flushPipeline();
	EINT;
	watchdogSet(WDT_4ms);
	ReleaseFlashPump();

	return oReturnCheck;
}

 Is there anything wrong with my code? By the way, why the function "Fapi_issueAsyncCommandWithAddress" will cause chip reboot???

Best Wish

Li

Hi Li,

Could you confirm whether the flash API and the FlashSectorErase() are executed from RAM or Flash?  They should be executed from RAM.

I will review the code in a day or two.

Thanks and regards,
Vamsi

Hi Li,

I still did not see the EALLOW before the erase function.

Also, please take a look at this Flash API usage FAQ, it may help for your debug:  https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/951668/faq-faq-on-flash-api-usage-for-c2000-devices 

Thanks and regards,
Vamsi

Hi Vamsi:

  DINT;
  EALLOW;
  DcsmCommonRegs.FLSEM.all = 0xA501;

  Flash0EccRegs.ECC_ENABLE.bit.ENABLE = 0x0;
  Flash0CtrlRegs.FRD_INTF_CTRL.bit.DATA_CACHE_EN = 0;
  Flash0CtrlRegs.FRD_INTF_CTRL.bit.PREFETCH_EN = 0;
  EDIS;

  // EALLOW; if I add EALLOW here, the CPU will reboot.
  oReturnCheck = Fapi_issueAsyncCommandWithAddress(Fapi_EraseSector,(uint32 *)SectorAddress);
  uart_len = sprintf(uart_buff, "Fapi_issueAsyncCommandWithAddress: 0x%08lx\n", SectorAddress);
  uartSendText(uart_buff, uart_len);
  //EDIS; If add EDIS here, my program will reboot, but why?

if I add EALLOW like above, the CPU will reboot.

Thanks and regards,

Li

Hi Li,

Can you answer my previous question copied below?

Thanks and regards,

Vamsi

Hi Vamsi:

Here below is to copy api to ram.

#ifdef __TI_COMPILER_VERSION__
    #if __TI_COMPILER_VERSION__ >= 15009000
#pragma CODE_SECTION(FlashSectorErase, ".TI.ramfunc")
    #else
#pragma CODE_SECTION(FlashSectorErase, "ramfuncs")
    #endif
#endif

Thanks

Li

Hi Li,

How about linker command file and memcpy()?  Are they configured correctly?

Thanks and regards,

Vamsi

Hi Li,

Thank you for the update.  I am closing this post.

Thanks and regards,

Vamsi