Compiling v 1.14 with Winbond W25Q128 external flash

[RaulKompass]

Hello,

I compiled with Micropython v 1.14 under Manjaro Linux.

After

sudo pacman -S arm-none-eabi-gcc arm-none-eabi-newlib
sudo pacman -S stlink

I had no Problem compiling with the predefined settings.
I noticed (too) that it was necessary to change into mpy-cross directory and execute make there before going to stm32 directory and making with
make BOARD=WEACT_F411CEU6 .

I could use
make BOARD=WEACT_F411CEU6 deploy-stlink
with my STLink v2 connected to the Blackpill board.
It gave an error first but repeating a second time I had success.

Now my Problem:
In a second attempt I wanted to make binaries for my Blackpill boards from Canaduino which have Winbond W25Q128 (16 MByte) external flash added.

Following instructions here I set
#define MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE (0)
and later uncommented
#define MICROPY_HW_SPIFLASH_SIZE_BITS (128 * 1024 * 1024)

After executing the make command I ran into the Error that the type
mp_spiflash_cache_t was not defined.

Therefore I had to adapt the sources a very little bit:

I included
#include "../../drivers/memory/spiflash.h"
in line 2 of bdev.c (after #include "storage.h")

and
#define MICROPY_HW_SPIFLASH_ENABLE_CACHE (1)
in line 104 of mpconfigport.h (after #define MICROPY_HW_SPIFLASH_MOSI (pin_A7) ).

And then it compiled and worked.

@mcauser : Sorry, I'm not familiar enough with git to make a pull-request.
I hope you read this and make these changes.

A question: Do we need cache for the spiflash at all?

Greetings and thank you for your work.

rkompass

[umbors]

I encountered the same problem when I try to build it and solved refer to the method you said in the issue.
Guess it is just a mistake and I would try to make a pull-request.

[mathstudi]

Hi,
Just FYI! WeAct have their own port: https://github.com/WeActTC/WeAct_F411CE-MicroPython.
Cheers

[rkompass]

I compiled 4 versions of micropython v 1.17. Just including #define MICROPY_HW_SPIFLASH_ENABLE_CACHE (1)
in line 104 of mpconfigport.h (after #define MICROPY_HW_SPIFLASH_MOSI (pin_A7) ).
was sufficient, no need to change bdev.c .
I will drop the binaries here:
build1.17-WEACT_F411CEU6.zip is for Blackpill board without SPI Flash.
build1.17-WEACT_F411CEU6_W25Q128.zip is for Blackpill board with W25Q128 SPI Flash.

[rkompass]

And
build1.17-WEACT_F411CEU6_ulab.zip is with ulab, no external flash.
build1.17-WEACT_F411CEU6_W25Q128_ulab.zip with ulab, for W25Q128 SPI Flash.
If you solder the flash, don't forget the 100nF buffer capacitor.