I am trying to toggle the GPIO port 8 with:


When I debug the application I can see, that the HAL_Delay does not work. I'm not sure if I missed a configuration option in the STM32CubeIDE to enable the SysTick.

Does anyone use STM32CubeIDE and can give me a hint?

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  • \$\begingroup\$ Is the code executing in ISR? \$\endgroup\$ Jun 15, 2019 at 12:34
  • \$\begingroup\$ I don't think so. But I did not find the right option to enabel it \$\endgroup\$
    – Pascal
    Jun 15, 2019 at 12:35
  • \$\begingroup\$ The problem is that SYSTICK only works while not debugging. If you run it works fine, but if you step through the code, the interrupt is not called which updates the SYSTICK counter. It's very annoying indeed. \$\endgroup\$ Jun 15, 2019 at 13:58
  • \$\begingroup\$ @MichelKeijzers Is this a general "problem" with stm32 mcus or just with STM32Cube Ide? \$\endgroup\$
    – Pascal
    Jun 15, 2019 at 14:04
  • 4
    \$\begingroup\$ "HAL_Delay does not work" is not much of a problem description. Does your code get stuck in HAL_Delay, or does it appear to simply skip over HAL_Delay? \$\endgroup\$
    – brhans
    Jun 15, 2019 at 14:06

1 Answer 1


I found my error. I have a jumper on my board to select the boot mode. I did not connect any of the pins (so no connection to VSS or VCC). This somehow resulted in the error described above. As soon as I set the jumper to connect Pin BOOT to VCC the clock started to work.


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