Hello Mike, I tried building this version, but get a compile-time error:

$ make BOARD=MCUDEV_DEVEBOX_H7XX_M
Use make V=1 or set BUILD_VERBOSE in your environment to increase build verbosity.
stm32lib submodule not found, fetching it now...
(cd ../.. && git submodule update --init lib/stm32lib)
Submodule 'lib/stm32lib' (https://github.com/micropython/stm32lib) registered for path 'lib/stm32lib'
Cloning into '/Users/jcw/code/git/micropython/lib/stm32lib'...
Submodule path 'lib/stm32lib': checked out '668d7a9e54aea98f8fe8a858eac1d3daa80fa824'
mkdir -p build-MCUDEV_DEVEBOX_H7XX_M/genhdr
GEN build-MCUDEV_DEVEBOX_H7XX_M/genhdr/pins.h
GEN stmconst build-MCUDEV_DEVEBOX_H7XX_M/modstm_qstr.h
make: *** No rule to make target `lib/mbedtls/library/aes.c', needed by `build-MCUDEV_DEVEBOX_H7XX_M/genhdr/qstr.i.last'.  Stop.

I'm doing this with freshly checked out µPy and this repo, running on latest macOS with arm-none-eabi-gcc toolchain provided by latest PlatformIO. Please let me know if you need more precise information, or if there's something further I can adjust or try. The only aes.c I can see is "../ports/cc3200/hal/aes.c".

-jcw

Found that when compiling STM32H750 the size of the data is too big - so the compiler will split into two parts.

Do you know how to flash both of them so the STM32H750 will support micropython?

https://github.com/mcauser/MCUDEV_DEVEBOX_H7XX_M/blob/master/README.md says "400MHz". Why not 480 as in the specs?

Hi,

few days ago I got 2 boards for my DIY project.
I don't get any communication with the boards, although they seem to be alive:

• via USB is not possible because there is no USB<->Serial converter on the board
• via SWD doesn't work! I don't know why and I don't want to waste my time (hours for hours...) to investigate this problem.

What kind of communication with this boards is possible?

Thanks in advance,
Michael

I have buy this board for create a project but no communication when I connect usb at pc. But the two k1 k2 led working, the k2 led, the light flashes

Hi !
Thanks a lot for your job !

I get this error with your files :

sudo make BOARD=MCUDEV_DEVEBOX_H7XX_M

CC system_stm32.c
In file included from ./mpconfigport.h:31:0,
from ../../py/mpconfig.h:62,
from ../../py/mphal.h:29,
from system_stm32.c:78:
system_stm32.c: In function 'SystemClock_Config':
boards/MCUDEV_DEVEBOX_H7XX_M/mpconfigboard.h:16:30: error: 'RCC_PLLP_DIV2' undeclared (first use in this function)
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2) // divide PLL clock by this to get core clock
^
system_stm32.c:295:34: note: in expansion of macro 'MICROPY_HW_CLK_PLLP'
RCC_OscInitStruct.PLL.PLLP = MICROPY_HW_CLK_PLLP;
^~~~~~~~~~~~~~~~~~~
boards/MCUDEV_DEVEBOX_H7XX_M/mpconfigboard.h:16:30: note: each undeclared identifier is reported only once for each function it appears in
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2) // divide PLL clock by this to get core clock
^
system_stm32.c:295:34: note: in expansion of macro 'MICROPY_HW_CLK_PLLP'
RCC_OscInitStruct.PLL.PLLP = MICROPY_HW_CLK_PLLP;
^~~~~~~~~~~~~~~~~~~
system_stm32.c:298:34: error: 'MICROPY_HW_CLK_PLLR' undeclared (first use in this function)
RCC_OscInitStruct.PLL.PLLR = MICROPY_HW_CLK_PLLR;
^~~~~~~~~~~~~~~~~~~
system_stm32.c:333:38: error: 'MICROPY_HW_CLK_PLL3M' undeclared (first use in this function)
PeriphClkInitStruct.PLL3.PLL3M = MICROPY_HW_CLK_PLL3M;
^~~~~~~~~~~~~~~~~~~~
system_stm32.c:334:38: error: 'MICROPY_HW_CLK_PLL3N' undeclared (first use in this function)
PeriphClkInitStruct.PLL3.PLL3N = MICROPY_HW_CLK_PLL3N;
^~~~~~~~~~~~~~~~~~~~
system_stm32.c:335:38: error: 'MICROPY_HW_CLK_PLL3P' undeclared (first use in this function)
PeriphClkInitStruct.PLL3.PLL3P = MICROPY_HW_CLK_PLL3P;
^~~~~~~~~~~~~~~~~~~~
system_stm32.c:336:38: error: 'MICROPY_HW_CLK_PLL3Q' undeclared (first use in this function)
PeriphClkInitStruct.PLL3.PLL3Q = MICROPY_HW_CLK_PLL3Q;
^~~~~~~~~~~~~~~~~~~~
system_stm32.c:337:38: error: 'MICROPY_HW_CLK_PLL3R' undeclared (first use in this function)
PeriphClkInitStruct.PLL3.PLL3R = MICROPY_HW_CLK_PLL3R;
^~~~~~~~~~~~~~~~~~~~
../../py/mkrules.mk:47: recipe for target 'build-MCUDEV_DEVEBOX_H7XX_M/system_stm32.o' failed
make: *** [build-MCUDEV_DEVEBOX_H7XX_M/system_stm32.o] Error 1

This seems to be linked to the mcuboard definition file, but I don't understand anything :)

Do you have any idea to solve this ?

Best regards !

Hi,
Could you pls provide a bin/hex file for this project to us? We can directly flash the micropython firmware to device. many thanks.

Hi Mike! First of all thank you for you great work on this new board.
This post is not for an issue with the code, but rather a warning about the hardware.
Micropyton connection works like a charm.

I tried to connect an OV2640 camera (like this) to the 24pin connector on the back, but the camera started getting hot and finally burnt...
After reviewing the schematic I noticed that the camera connector pinout is not standard.
I tried to contact the vendor with little results.

Just be careful when you connect!
Any guess about what camera to connect?

OV2640 flex cable pinout:

MCUDEV camera pinout:

hello,
want to compile micropython for this board, and i have this error at the end:
arm-none-eabi-ld: build-MCUDEV_DEVEBOX_H7XX_M/firmware.elf section .eth_buffers' will not fit in region RAM_D2'
arm-none-eabi-ld: region `RAM_D2' overflowed by 805273600 bytes

if you have an idea?

thanck you

Hi!
Who can explain this?
743VIT has 2M, it is ok, no questions.
750VBT has 128k flash.
How is it possible to program it with 400k+ of code?
Or what am I missing?

I just received the H750 board.
ST-LINK V2 requires to connect RST (reset pin) in order to do reset and start programming automatically.
However the board does not extend RST pin to any header pin.

As this can not be solved with current board, We recommend that developer extends RST to a header pin.
I recommend also to make RST available on SWD header as this is the mostly used scenario.
Second, we can not solve this issue now with soldering a pin because developer did not leave any spare pin on headers!

Hi,
I have board H7 blue,
I need test whith CDC usb, my teste with Stm32cubeIDE problem clock setinng for USB.
ENABLE USB DEVICE = error clock set

GPIO test ok

see code:

MX_GPIO_Init();
MX_USB_DEVICE_Init();

while (1)
{
CDC_Transmit_HS( buf, sizeof(buf));
HAL_GPIO_TogglePin(GPIOA , LED_A10_Pin);
HAL_GPIO_TogglePin(GPIOA , LED_A15_Pin);
HAL_Delay(2000);
}

thanks,
Carlos.