STM nuclo32-l32kc Timer1 internal clock and GPIO on pin PA12

• STM nuclo32-l32kc Timer1 internal clock and GPIO on pin PA12
  Posted by conducteur on 06 May, 2021 15:34
• Hi
  
  I'm learning STM32 microcontrollers, and there's something that I don't really understand.
  It seems that I can't assign Timer1 with an internal clock because I need PA12  as GPIO Output? 
  
  I tried to find more details in the datasheets, but did not find it. I don't see why a GPIO pin blocks the use of this timer?
  
  I want to use ch1 for input capture, but this is on a different pin then PA12 (PA8).
  
  

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• #1 Reply
  Posted by gamalot on 06 May, 2021 15:48
• No, the internal clock will definitely not conflict with a GPIO pin. There will be conflicts only when you select an external clock source. For example, selecting ETR2 will conflict with PA12 set to GPIO output mode.
  

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• #2 Reply
  Posted by conducteur on 06 May, 2021 15:57
• Oh thank you. I misunderstood the warning. It's seems logical that it only relates to the options in pink.....
  
  thank you!