MicroPython Forum (Archive)

That's interesting. I used that branch just now for flashing. May it be that the flash is connected to a different flexspi port or requires different timings?

Comparing at the schematics, the FLEXSPI connections seem identical. We never tested the 1052 port with QSPI flash. I could get a ARCH MIX board for testing. It seems to export more pins than the NXP EVK board. It seems to be on backlog at the moment, with a delivery time of three weeks.

Roberthh wrote: ↑

Tue Oct 05, 2021 2:26 pm

That's interesting. I used that branch just now for flashing. May it be that the flash is connected to a different flexspi port or requires different timings?

I've checked the schematics for MIMXRT1050-EVK

and Arch-Mix


It looks the same.
As I've described only the write to Flash does not work.

I dont have the schematic for VisionSOM-RT (1062) module at the moment, but as booting and Flash read operations works, I suppose the connection is the same.

I looked into the files, and for the 1050, the qspi_nor_flash_config.c looks wrong. Try to use the file from the MIMXRT1020_EVK at that place.

Roberthh wrote: ↑

Tue Oct 05, 2021 3:00 pm

I looked into the files, and for the 1050, the qspi_nor_flash_config.c looks wrong. Try to use the file from the MIMXRT1020_EVK at that place.

Thanks, I'll try it later today.

According to the mex file I have for VisionSOM-RT (1062) module the qspi flash connection is the same as on MIMXRT1020_EVK/Arch-Mix.

Roberthh wrote: ↑

Tue Oct 05, 2021 3:00 pm

I looked into the files, and for the 1050, the qspi_nor_flash_config.c looks wrong. Try to use the file from the MIMXRT1020_EVK at that place.

Unfortunately I have only access to the code vi phone now so a diff is not as easy. I just spotted that we have 133MHz clock speed configured in the 1050. That was one thing I found odd because that did not work for me with the 1020.

What else did you spot? Was the write command different?

It is different to what works on the 1020 or Teensy (like 8 pads, differential clock, ..., all the settings from the hyperflash).

I guess I need to take a look at that tonight, too.

I've just checked on both boards and using the qspi_nor_flash_config.c from MIMXRT1020_EVK it works!
The file system is mounted on boot (from _boot.py) everything (at least what I've tested) works.

@Roberthh thank you for the help and congratulations on the great work.