Flash Driver is not writing into 0x80F00,801F00 etc

[kotteeswarangs]

Hi,

I am using K70 Microcontroller - MK70FN1MOVMJ12.

I want to write DDR to Flash. I am using Flash driver - flash_kinetis.c (I tried latest driver , but it is not writing to the flash at all, so I have used old driver -atleast it writes into flash)

If I mention my flash start address 0x8000 and the length is 256 . It is writing the all the locations(every 0x100) except

0x80F00,0x81F00,0x82F00 etc

I dont know why the flash driver is not writing to the specific location 0x80F00 (next 256 data is only 0xFFFFFFFF),0x81F00 etc (I see AccErr when I debug).

My code is this:

***********************************************************************

length = 256;

ram_data = (unsigned long*)0x70000000;

for(mn=0;mn<256;mn++)

{

         ram_data[mn] =  mn;

}    

length >>= 2;

for(original_address.complete = 0x80000;original_address.complete < 0x90000;original_address.complete = original_address.complete+0x100)

{

            write_flash_ret = WRITE_FLASH_FUNC(original_address.complete, (LWord*)ram_data, length);

}

*****************************************************************************

Please have a look on the above and let me know your response.

Thanks,

Regards,

Kotteeswaran G S

[Kan_Li]

Hi Kotteeswaran  G S,

I have some validation code for your reference, if you think demo_normal is a little bit complicated , you may try the validation code, which is based on TWr-K70F120M.

Hope that helps,

Have a great day,
Kan

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[kotteeswarangs]

Hi,

Please note that I am using bare metal code and the observations are:

1.If length is 256, it is writing exactly 256 long words except for the address 0x80F00,801F00,802F00 etc (up to 256 long words)

2. If we add any lines (after flash write – kind of delay), it makes to write beyond 256 long words – say next 30-40 long words.

3. If the length is 128 ..it is writing up to 256 long words.(first 128 long words are correct , other locations just junk data)

Thanks,

Regards,

Kotteeswaran  G S