TMS320F28075: Flash Write not working

Hello Vamsi,

Thanks for sharing important information. I have modified ALIGN(4) to ALIGN(8) and now the text file generated is aligned to what exactly required during flash writing.

Is it ok,  if i write FF on the highlighted place during flashing, as its empty.or should i keep it as it is.

After writing firmware on flash i tried to boot, but controller generated illegal isr. error. Do i have to make flash off after firmware write finish. 

Or the firmware written on the flash is having some issue.

Regards,

Sandeep Chavan

Vamsi,

i am able to jump to application code from bootloader code, but application code is generating some issue. in Disassembly i see one error that no code at 88dcc address. But code is present on that location.

In application code i have toggled one gpio. In debugger i saw that gpio is not getting toggled.

but when i individually run that application on same memory, application code runs perfectly fine.

Even i downloaded application code using ccs and then from Bootloader code to application code jump is taken , in that scenario also application code is working fine. i saw gpio toggle in debug session.

for flash write i am using Fapi_AutoEccGeneration mode. After bootloader start i have used below sequence

first flash sectors init

EALLOW;
// Flash0EccRegs.ECC_ENABLE.bit.ENABLE = 0x0;

Fapi_StatusType oReturnCheck;
oReturnCheck = Fapi_initializeAPI(F021_CPU0_BASE_ADDRESS, 120);
if(oReturnCheck != Fapi_Status_Success)
{
Example_Error(oReturnCheck);
}
oReturnCheck = Fapi_setActiveFlashBank(Fapi_FlashBank0);
if(oReturnCheck != Fapi_Status_Success)
{
Example_Error(oReturnCheck);
}

//Flash0EccRegs.ECC_ENABLE.bit.ENABLE = 0xA;

EDIS;


Then if address is received, on serial port i erase particular sector only once using below function


char FlashSectorErase(uint32 Bzero_Sector_start)
{
char status=SET;

Fapi_StatusType oReturnCheck;

Fapi_FlashStatusWordType oFlashStatusWord;

EALLOW;
Flash0EccRegs.ECC_ENABLE.bit.ENABLE = 0x0;

oReturnCheck = Fapi_issueAsyncCommandWithAddress(Fapi_EraseSector,(uint32 *)Bzero_Sector_start);


// Wait until FSM is done with erase sector operation

while (Fapi_checkFsmForReady() != Fapi_Status_FsmReady){}


// Verify that Sector is erased. The Erase step itself does a

oReturnCheck = Fapi_doBlankCheck((uint32 *)Bzero_Sector_start,
Bzero_16KSector_u32length,
&oFlashStatusWord);

if(oReturnCheck != Fapi_Status_Success)
{
status = CLEAR;

Example_Error(oReturnCheck);
}
Flash0EccRegs.ECC_ENABLE.bit.ENABLE = 0xA;
EDIS;

return status;
}

Then if data is received, on serial port then in bunch of 128 bit i write it on flash

unsigned char Flashwrite( Uint16 *BufAddr, Uint16 SizeofBuf)
{
char status=SET;

unsigned short i=0,increment=0;

uint32 u32Index = 0;

Fapi_StatusType oReturnCheck;

volatile Fapi_FlashStatusType oFlashStatus;

Fapi_FlashStatusWordType oFlashStatusWord;


EALLOW;

if(SizeofBuf % 8)
{
increment = SizeofBuf % 8;

SizeofBuf += 8 - increment;

}

for(i=0; i< SizeofBuf; i++)
{
Buffer[i] = 0xFFFF;
Buffer[i] = *BufAddr;
BufAddr++;
}
Buffer[i] = 0xFFFF;


for(i=0, u32Index =flash_address;
(u32Index < (flash_address + SizeofBuf)); i+= 8, u32Index+= 8)
{

oReturnCheck = Fapi_issueProgrammingCommand((uint32 *)u32Index,Buffer+i,
8,0,0,
Fapi_AutoEccGeneration);

while(Fapi_checkFsmForReady() == Fapi_Status_FsmBusy);

if(oReturnCheck != Fapi_Status_Success)
{
//
// Check Flash API documentation for possible errors
//
Example_Error(oReturnCheck);
}

//
// Read FMSTAT register contents to know the status of FSM after
// program command for any debug
//
oFlashStatus = Fapi_getFsmStatus();

//
// Verify the values programmed. The Program step itself does a verify
// as it goes. This verify is a 2nd verification that can be done.
//
oReturnCheck = Fapi_doVerify((uint32 *)u32Index, 4, Buffer32+(i/2),
&oFlashStatusWord);

if(oReturnCheck != Fapi_Status_Success)
{
status = CLEAR;

// Check Flash API documentation for possible errors
//
Example_Error(oReturnCheck);
}
}
// Flash0EccRegs.ECC_ENABLE.bit.ENABLE = 0xA;

EDIS;

if(oReturnCheck != Fapi_Status_Success)
{
status = CLEAR;
}

return status;
}


after finishing the firmware download, using jump instruction to jump to application code.

Please let me know if i missed something

Regards,
Sandeep Chavan