About MB7

MB7 · 2022-10-31

Hi community,This question is all about the behavior of the DMA1_Channel1_IRQHandler in my application.I am working with an STM32G431CBT. It is running at 168MHz. Configured with 4 Flash wait states.NVIC interrupt priorities are setup using CMSIS fun...

MB7 · 2022-11-04

I changed the setting of the IO pin to use the BSSR register, but that did not make a difference.Next I tried moving the "GPIOC->BSRR |= (1U << (14+16)); ////Set Pin low" upwards in the ISR-Code to see whether there is that point from which on there ...

MB7 · 2022-11-04

8000cc0: 41f00000 .word 0x41f00000 08000cc4 <DMA1_Channel1_IRQHandler>: 8000cc4: 4b73 ldr r3, [pc, #460] ; (8000e94 <DMA1_Channel1_IRQHandler+0x1d0>) 8000cc6: 681a ldr r2, [r3, #0] 8000cc8: 0792 lsls r2, r2, #30 8000cca: b510...

MB7 · 2022-11-04

This is what I could find in the .map file regarding the DMA1_Channel1_IRQHandler: .text 0x0000000008000c88 0x3c /home/MB/opt/stm32CubeIDE_1.10.1/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.10.3-2021.10.linux64_1...

MB7 · 2022-11-01

@Community member OK seems I have to go through quite some learning curve here. How can I check the alignment of the Handler?@S.Ma I tried that. Did not make a difference at all.@Community member The ISR looks like this:void DMA1_Channel1_IRQHandl...

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How can it be that the amount of lines of code in main() affect the time it takes to execute an interrupt routine?

Re: How can it be that the amount of lines of code in main() affect the time it takes to execute an interrupt routine?

Re: How can it be that the amount of lines of code in main() affect the time it takes to execute an interrupt routine?

Re: How can it be that the amount of lines of code in main() affect the time it takes to execute an interrupt routine?

Re: How can it be that the amount of lines of code in main() affect the time it takes to execute an interrupt routine?