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Paul_TESSON
Paul_TESSON
Associate II
February 3, 2024
Solved

Interrupt problem on stm32f7 (bare-metal)

  • February 3, 2024
  • 4 replies
  • 2293 views

Hello, I would like to contact you because, following the code made on Keil uvision 5, I cannot get my interrupt to work.
Objective of the code, turn on and off the LED (pb0) of the card with the button (pc13) on it itself.
PCB Used : STM32F767ZI

Best answer by Paul_TESSON

I have found the problem, we must remove pupdr.

4 replies

STTwo-32
STTwo-32
Technical Moderator
February 3, 2024

Hello @Paul_TESSON 

I suggest you to refer to this LL_example to understand the configuration. Then you can convert it to use direct register programming if you want.

Best Regards.

STTwo-32 

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TDK
TDK
Super User
February 3, 2024

Is SCB->VTOR set to 0x08000000?

Can you step through and verify GPIOC->IDR reflects that the pin is toggling?

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waclawek.jan
waclawek.jan
Super User
February 4, 2024

Start with plain loopdelay blinky.

Then proceed with copying state of button into LED in a loop.

Buttons are bouncy, EXTI on a pushbutton is not a good idea (except for simple experiments).

Generally, read out and check/post content of relevant GPIO and EXTI and SYSCFG registers.

A generic "interrupt does not fire" checklist here.

JW

 

    Paul_TESSON
    Paul_TESSONAuthorAnswer
    Associate II
    February 11, 2024

    I have found the problem, we must remove pupdr.

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