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halbeeee · 2024-02-13

Hello everyone, I'm working on an STM32H755BI (industrial temperature range), and i'm quite disappointed by the maximum clock reachable from the system.As can be seen, the MCU can reach up to 480MHz in the core M7 and 240MHz in the core M4.After mont...

halbeeee · 2023-06-12

Hello, i would like to post a problem that i have: i have a custom STM32H755BI (dual core) board that i usually flash with CubeIDE and i debug. Unortunatelly i noticed that the board works fine, but if i reboot the board and i connect with a j-link s...

halbeeee · 2023-03-23

Hello, i'm using an STM32H7 but unfortunately for a known bug of the firmware package i'm not able to select the ADC prescaler. Uprading to a newer firmware package is not considered.At the moment i resolved applying a prescaler with the linehadc1.In...

halbeeee · 2022-09-12

Hello, I want to try to use PTP in my project, but the lack of documentation took me into a dead point. I'm currently using an STM32H755 which support the protocol.I have a lot of question but as first thing I want to understand the faesability of th...

halbeeee · 2024-02-26

M4 and M7 can run at the same frequency with no problem, BUT:If you use the M4 at 200/240 MHz (VOS0/1) you can use the M7 at 400/480MHz, no point of reducing the clock of the M7 at its 50%;If you use (VOS2/3) The M7 can be used at 200/300 MHZ BUT the...

halbeeee · 2024-02-13

Yes you are right, I confused AHB4 and APB4 but this not change the fact that CubeMX don't allow me to apply 150MHz, which now is also a value that can be used according to the datasheet.Is a kind of bug? Or a limit?

halbeeee · 2024-02-13

@TDK Thank you for the reply. The maximum clock was reduced to 300MHz with the FW package 1.11.0 if i'm not wrong. But the datasheet confirms this maximum value of 300MHz and there is nothing to do. The reliability is a crucial requirements so i have...

halbeeee · 2024-02-13

Sorry, but i didn't get the point of your comment. How can my problem and the application note you posted be related?

halbeeee · 2023-03-23

Thank for your answer, very useful. The only question is that you told me to modify the SystemClock_Config(), but looking on your code seems like that the function that i need to modify is PeriphCommonClock_Config(), which i don't have. Is there a wa...

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STM32H755, is the clock too slow?

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Change ADC clock in STM32H7

Getting started with PTP (IEEE 1588)

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