About herbert

herbert · 2024-08-07

Hello all,it seems that when starting a timer in PWM mode, using TIM_CHANNEL_ALL does not work. Everything works fine as long as I start the channels consecutively, (i.e. TIM_CHANNEL_1, then TIM_CHANNEL_2, etc.) but as soon as I change this to TIM_CH...

herbert · 2024-03-12

Hallo All,I am currently stuck and need your help. The following function counts the no. of 1 in a 32 bit word on an STM32F407. Why does it fail for values which have their bit 31 set? Precisely, it ignores bit 31 and in these cases is off by one. ...

herbert · 2023-10-16

Hello Community,I have several really large const arrays (with graphics data for LCD displays) which need not to be copied into RAM at startup, as this overflows my available RAM (on STM32F411 Discovery board). As there is no way to configure such be...

herbert · 2023-08-17

Hello,after upgrading from 1.12.1 to 1.13.1 I encounter the following problem when trying to download my (previously working fine) project onto STM32:Any ideas?regardsHerbert

herbert · 2023-04-24

Hello,when configuring a binary semaphore with CubeIDE the parameter initial_count defaults to 1. Is there a way to tell CubeIDE to always initialize this with value 0 for my projects?regardsHerbert

herbert · 2024-08-07

Thank you, I was wrongly (read carelessly) assuming this works, being lured into the belief by the naming. A closer look into the HAL manual would have revealed the truth ...:face_with_rolling_eyes:Herbert

herbert · 2024-03-13

Thanks you for your input. Yes, I know and normally use the Gillies-Miller method for sideways addition. I was just drafting this other solution to make some time measuring experiments to show to my students how much faster sideways addition is.Herby

herbert · 2023-10-16

Your suspicion is correct, thank you. I was chasing the wrong culprit. Some other arrays seem to be too large. I have reduced their size and the overflowed RAM collapsed from 68K to 2K. So it is there I have to go and look for a solution.

herbert · 2023-10-16

Here is my map file. No secret in there. I have just renamed it from .map to .log so that st will allow me to post it here.

herbert · 2023-10-16

I have done that already, but the error messages remain: Frankly, I have completely run out of ideas by now.

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User Activity

Problem on STM32F407 and 411 Discovery boards with TIM_CHANNEL_ALL

Help needed with STM32 ASM function

How to persuade linker not to copy const data arrays from flash into RAM at startup

Error in connection to STM32 after upgrading to CubeIDE 1.13.1

How to configure CubeIDE to initialize binary semaphores with the initial count 0?

Re: Problem on STM32F407 and 411 Discovery boards with TIM_CHANNEL_ALL

Re: Help needed with STM32 ASM function

Re: How to persuade linker not to copy const data arrays from flash into RAM at startup

Re: How to persuade linker not to copy const data arrays from flash into RAM at startup

Re: How to persuade linker not to copy const data arrays from flash into RAM at startup