Hello Everyone,
In my application, i am using external Nor flash. I run my code from XiP then i want to configure flash section like 0x3000 0000 + (Bootloader) and 0x3040 0000 - (EEprom). Therefore, i imported SDK example which is "evkbmimxrt1170_fsl_romapi_cm7". I used everything same even pin initialize in example. I just changed some Lut commands and .option0.U = 0xC0000005U. When i run code, i get Vendor ID successfully. After that, example calls ROM_FLEXSPI_NorFlash_Erase() function and my program crashes. Error is 7001 "Sequence execution timeout error occurred during FLEXSPI transfer"
(Some informations in my app: AT25SF321B is my external Nor Flash.
SerialNorTotalSize = 0x400000 , SerialNorSectorSize = 0x1000, SerialNorPageSize = 0x100, FLEXSPI_BASE = 0x30000000, SECTOR_INDEX_FROM_END = 2 )
Here is my questions:
1) My flash size is 4MB so 0x400000 is end adress. In example, Erase function use address 0x3FE000 but reference manuel says flexspi starts from 0x30000000 + 0x400000(flash size). Therefore, should we send 0x303FE000 to erase function?
2) While testing my code, i sent 0x3FE000 address to write 256 bytes(1 page) buffer. After function call, function assigns buffer's value to right address but my program crashes. I did not figure out what causes that yet.
3) ROM_FLEXSPI functions are function pointer. I did not find any explanation about functions. In reference manuel, functions are just copy-pasted. Is there any documentation?
4) I do not know that i set correst Lut sequence for erase function. Page program, read command etc. mentioned in reference manuel but there is not erase command. Can you check my Lut?
5) As i mentioned above, can i split flash sections with ROM_FLEXSPI functions?
6) I want to check memory after function calls. Hence, can i debug this example?
I share my config below and i realy need help about Error => "7001 - Sequence execution timeout error occurred during FLEXSPI transfer".
Best Regards,
Basri KAYA
Solved! Go to Solution.
Disable irq and check the datasheet of flash. It works fine. If anyone has problem, i can help.
Disable irq and check the datasheet of flash. It works fine. If anyone has problem, i can help.