F28M36P63C2: F28M36 Flash Programming(F021 Flash API) not working with 120Mhz(C28 &M3) SysClk

Rakesh Dara

Part Number: F28M36P63C2

Dear Friend,

I am implementing Flash Programming in F28M36 concerto controller using F021 Flash API's with M3SSCLK as 120Mhz and C28SSCLK as 120MHz.

After executing the below function i am getting status as Fapi_Error_InvalidHclkValue.

oReturnCheck = Fapi_setActiveFlashBank(Fapi_FlashBank0);

Changes i done Mentioned Here:

M3 Side:

1.Flash.c File

    #if CPU_FRQ_120MHZ
    HWREG(FLASH_CONFIG_BASE +
          FLASHCTRL_O_FRDCNTL) = (2 << FLASHCTRL_FRDCNTL_RWAIT_S);
    #endif

2.FlasProgrammingm3.c file

    #if CPU_FRQ_120MHZ
    oReturnCheck = Fapi_initializeAPI(F021_CPU0_BASE_ADDRESS, 100);
    #endif

C28 side i also done same thing

Please guide me to resolve the problem

over 8 years ago

0 Vamsi Gudivada over 8 years ago

TI__Guru* 87155 points

Rakesh,

Why are you passing 100MHz instead of 120MHz for Fapi_initializeAPI() function?

Thanks and regards,
Vamsi

0 Rakesh Dara over 8 years ago in reply to Vamsi Gudivada

Intellectual 330 points

Dear Vamsi,
In my software 120 as argument for Fapi_initializeAPI() function but here i written wrong.

0 Vamsi Gudivada over 8 years ago in reply to Rakesh Dara

TI__Guru* 87155 points

Rakesh,

If the configured wait-states are 2, you should not get that error for 120MHz. Can you check the RWAIT bit field's value in FRDCNTL register in debugger memory window after you execute the Flash initialization function? Make sure the wait state value is written correctly in to the RWAIT bit field in FRDCNTL.

Another note: Table 3-2. Possible Speed Combinations for Cortex-M3 and C28x Cores in data manual gives the possible speed combinations for M3 and C28x. 120MHz is not a possible option.

Thanks and regards,

Vamsi

0 Rakesh Dara over 8 years ago in reply to Vamsi Gudivada

Intellectual 330 points

Dear Vamsi,
In debug window FRDCNTL register memory location contains 1 instead of 2.
During Step by step execution 75Mhz corresponding FRDCNTL register executed because of #define(Newly created 120Mhz) problem.
After removing the #define issue Flash programming done successfully with 120Mhz SYSCLK.

And your Note: Operating C28 and M3 120Mhz option is possible.

Thanks for the support.

Thanks&Regards
Rakesh D

0 Vamsi Gudivada over 8 years ago in reply to Rakesh Dara

TI__Guru* 87155 points

Rakesh,

Glad that it helped.

Regarding the 120MHz operation, I will check with our system control expert.

Thanks and regards,
Vamsi

0 Vamsi Gudivada over 8 years ago in reply to Vamsi Gudivada

TI__Guru* 87155 points

Rakesh,

I checked with our system control expert and he mentioned that 120MHz is fine.
I am closing this thread.

Thanks and regards,
Vamsi

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F28M36P63C2: F28M36 Flash Programming(F021 Flash API) not working with 120Mhz(C28 &M3) SysClk