For questions about programming the STM32 H7. The STM32 H7 is an ARM Cortex-M7F MCUs (sometimes with optional ARM Cortex-M4F coprocessors) from ST Microelectronics. (Please also add a language tag!)
Questions tagged [stm32h7]
48 questions
6
votes
1 answer
Why does D2 RAM work correctly even when clock is disabled?
TL;DR: documentation states I have to enable a specific memory region in the microcontroller before I can use it. However, I can use it before enabling it, or even after disabling it. How is this possible?
I'm currently developing an application…
wovano
- 4,543
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- 49
2
votes
0 answers
How to use openocd to debug stm32h745-disco board?
I am using a dual core board stm32h745-disco, which contains cortex-m7 and cortex-m4.
When I used openocd to set up the gdb server for the board,
$ openocd -f tcl/board/stm32h745i-disco.cfg
Info : The selected transport took over low-level target…
Spencer
- 31
- 1
2
votes
2 answers
How to manage devices that cannot access d-cache in ARM
I'm using an SPI device with DMA enabled in an STM32H7 SoC. The DMA periph. cannot access d-cache, so in order to make it work I have disabled d-cache entirely (for more info. about this, see this explanation). However, I would like to avoid…
Dan
- 2,452
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2
votes
1 answer
I get an Error when setting PCROP STM32H7 (STM32H743)
Goal
I'm trying to set a PCROP area on my STM32H743VI microcontroller, but I'm getting the error code HAL_FLASH_ERROR_OB_CHANGE when executing HAL_FLASH_OB_Launch() and my PCROP area is not set.
The relevant part of the code I'm using should be the…
Dugnom
- 342
- 1
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- 12
2
votes
1 answer
ST-LINK error on STM32CubeProgrammer: Problem occurred while trying to connect
On STM32CubeProgrammer trying to connect to ST-Link module on STM32H7B3LI, I get this:
ST-LINK error (DEV_CONNECT_ERR)
Error: Problem occurred while trying to connect
I already tried installing the firmware here but it doesn't help:…
Francisco Skrobola
- 31
- 1
- 4
1
vote
0 answers
STM32H723 HSE frequency for usb + ethernet at 550MHz
Is there a HSE frequency that will provide the desired target frequencies for a 550MHz cpu clock, usb, and ethernet?
Using STM32CubeIDE I've plugged in an 8MHz HSE and 550MHz cpu core but this is showing a 110MHz click into USB. Shouldn't this be…
Chris Morgan
- 1,277
- 1
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1
vote
0 answers
VSCode: How to define unique includePaths for each core (sub-directories) in STM32h7 dual-core project within same git repo?
I have a git repository for a STM32 H7 dual-core project. Opening the repo-level folder my structure looks like the following:
PARENT DIRECTORY (STM32H755)
├── .git
├── .vscode
│ └── c_cpp_properties.json
│
├── CM4
│ ├── Core
│ │ ├── Inc
│ …
kcmorenachos
- 11
- 2
1
vote
2 answers
How could I have known ETH won't work with AXI SRAM? Is it the same for SDMMC2? STM32H745
A while ago I wrote my own ethernet driver for fun, and most of the time was spent banging my head on the keyboard because it wasn't working - as is tradition.
Problem ended up being that ethernet simply couldn't read from or write to AXI SRAM.
I…
TrisT
- 639
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1
vote
0 answers
stm32h743 webserver how download text file from browser
I have set up an STM32H743 nucleo webserver which works OK by presenting a small webpage on a browser (I am using LWIP+CubeIDE).
I can give the webserver simple commands via CGI (see below) and thereby print something to the serial…
user1504343
- 49
- 6
1
vote
0 answers
ST-LINK server preventing debugging. 'Info : stlinkserver already running, exit'
Just trying to build and run / debug the default, unedited STM32 project you get when you open STM32CubeIDE. After telling me I needed the download the ST-Link server for it to work, I did, then updated the board when prompted. It now gives me 'Info…
mady1028
- 11
- 2
1
vote
0 answers
LED Blinks "Too" Fast @ NUCLEO-H755ZI-Q
Hi!
According to the STM32H755ZI's manual RM0399, §9.5.6 (pg. 377), the default clock should be 64 MHz (HSI) after reset. Since the same code worked perfectly on other devices like e.g. a NUCLEO-F303K8, I expected the (red) LED to blink with 1 Hz.…
Christian M.
- 46
- 8
0
votes
0 answers
Issues while writing into an External NOR while XiP from a different section of the same External NOR
I am working on a custom PCB with STM32H753 microcontroller and an External NOR flash memory to which I am accessing via FMC interface @ 0x60000000.
I have a secure boot (SBSFU) running on the internal flash of the uC and my application executes on…
Sreedhar
- 33
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- 4
0
votes
0 answers
Flickering LTDC display on STM32H735G-DK with double buffering and DMA2D
I have connected a 800x480 pixel display via LTDC to a STM32H735G-DK discovery board. In principle it is running and showing the pictures correctly. The problem is, when putting the decoded picture into the double buffer, the currently shown picture…
peter
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- 2
0
votes
0 answers
Setting up http server on STM32H750B-DK with LwIP and FreeRTOS
I am trying to set up an http server on STM32H750B-DK (on STM32CubeIDE) with LwIP. When I program it without implementing FreeRTOS I call the function MX_LWIP_Process in while function in main:
* Function given to help user to continue LwIP…
AK16
- 1
0
votes
0 answers
Unable to debug the Application using STMCubeIDE with break points - ST Link
Our total Flash is divided between Boot Loader and application, and their linker scripts will look like below:
Boot Loader starts at 0x08000000.
The application starts at 0x0804C000.
I'm able to debug the Boot Loader code step by step with…
