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   XPost: sci.electronics.design   
      
   On 2024-01-15, john larkin  wrote:   
   > The Raspberry Pi pico has its 3-pin SWD debug port. I'd like to   
   > connect it to the 40-pin header on the back of the Pi400, to use the   
   > 400 as the dev/debug platform for some RP2040-based boxes.   
      
   What debug software are you planning to use? OpenOCD?   
      
   The pinout seems to be quite flexible - look at   
   interface/raspberrypi-gpio-connector.cfg in the OpenOCD sources /   
   distribution.   
      
   If you want something nice with level translation that handles power   
   sequencing between Pi and Target board, the JTAG Hat should do what you   
   want:   
      
   https://github.com/mschwingen/hardware/tree/master/JTAG_hat   
      
   I think this should also work an a pi400.   
      
   cu   
   Michael   
   --   
   Some people have no respect of age unless it is bottled.   
      
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