Any got luck flashing bootloader with RPi and OpenOCD?

[victpork]

Want to flash the bootloader to the latest version (0.2.13-42-g82464f9-dirty for mine). But haven't got any DAP probe at hand and I was thinking of using my RPi3 as alternative. However can't get it working as it shows "Error connecting DP: cannot read IDR" when starting a connection.

[blsmit5728]

I actually just did this with a PicoProbe, or at least the PicoProbe firmware on a Pi Pico board.
Firmware for Pico: https://github.com/rgrr/yapicoprobe/
Wiring:
Pico Pin 4->CLK
Pico Pin 5-> DIO
Pico Pin 9 -> RST
Pico Pin 36 -> 3V3
Pico Pin 38 -> GND
Using XPACKOpenOCD for there I didn't write down the line I used to run openocd.... but I found it googling around.

[blsmit5728]

Sites that were helpful:
https://community.element14.com/products/roadtest/b/blog/posts/tutorial-02-part-2-debugging-nrf52840-using-raspberry-pi-arduino-nano-33-ble-sense-roadtest
[https://asmw.de/posts/bootloader-fix-for-makerdiary-nrf52840-mdk-usb-dongle/](this is what I based my command off of)
Using the two above I was able to get the flashing to work.

[idreamsi]

Has anyone done this without using DAP probe?
I also only have access to RPI Pico and Raspberry Pi.
@victpork Did you succeed?

[idreamsi]

Finally, I used the following method and quickly came back.
https://github.com/idreamsi/bootloader-fix-for-makerdiary-nrf52840-mdk-usb-dongle/

[victpork]

Hi, Yup, after following @blsmit5728 instructions I flashed yapicoproble onto a pico and flashed the bootloader onto the mdk dongle.

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On 24 Jan 2024 at 03:15 +1300, Infinite Dreams ***@***.***>, wrote: Has anyone done this without using DAP probe? I also only have access to RPI Pico and Raspberry Pi. @victpork Did you succeed? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: ***@***.***>