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Rasberry Pi Debug Probe

  • CMSIS-DAP
  • UART (U) and I2C connector (D)
  • Does not provide power, target board needs to be powered but mind it needs shared ground

Pinout

  • Orange - TX/SC (Output from Probe)
  • Black - GND
  • Yellow - RX/SD (Input to Probe or I/O)

Pico connection

  • The Debug Probe "D" port to Pico H SWD JST-SH connector

  • The Debug Probe "U" port, with the three-pin JST-SH connector to 0.1-inch header (male):

    • Debug Probe RX connected to Pico H TX pin

    • Debug Probe TX connected to Pico H RX pin

    • Debug Probe GND connected to Pico H GND pin

Debugging

 openocd -f interface/cmsis-dap.cfg -f target/rp2040.cfg -c "adapter speed 5000"
 # on another terminal
 telnet localhost 4444
 reg

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