Raspberry Pi Pico J-Link problem... :(

fek9 · June 20, 2021, 9:25am

Morning folks

This morning I discovered a program called ‘SEGGER J-Flash Lite V7.20’ among others that had been installed by PlatformIO when I installed support for Raspberry Pi Pico board…

I used the blinky LED hex file compiled by platformio to directly upload to the Pi Pico board bypassing platformio completely…

The first upload had no problem as shown above as

Downloading… Done

the LED is blinking.

On the second upload the EDU mini reports

ERROR: Could not connect to target.

Blinking LED stops and the serial port disconnects, then it is in it’s lower power stupor.
Only a reset/power cycle will bring it back, blinking the LED code from the first upload.

Registered on Github this morning will open an issue

github.com/platformio/platform-raspberrypi

Request to Add J-Link and ST-Link Upload & Debug Support to RP2040 Pico

opened 06:19PM - 06 May 21 UTC

closed 02:08AM - 07 Jul 21 UTC

zpm1066

Currently, PlatformIO only seems to support `cmsis-dap and raspberry-swd` debug …options. `jlink` and `stlink` do not appear to be supported. `SEGGER` have updated their J-Link probe firmware to support Pico uploads (flash to QSPI) and debugging, see https://www.segger.com/products/debug-probes/j-link/ for `Release Notes`. I've been able to debug a Pico using a combination of `VSCODE + cmake + Picoprobe` and the `PlatformIO Debugger`. In addition, a Pico `elf` can be debugged using a `SEGGER Educ Mini probe & Ozone Debugger` combination. I'm not sure what changes are required in PlatformIO Debugger to work but the Raspberry Pico probe needed `OpenOCD` to be built with the Picoprobe driver, as detailed in the Raspberry Pi documentation at https://datasheets.raspberrypi.org/pico/getting-started-with-pico.pdf. It would be highly productive if we can have an out-of-the-box `jlink` (and `stlink`) support for `RP2040 Pico` upload & debug. I'm available to assist with any testing required to support this feature request. Your efforts to provide a complete PlatformIO support for the RP2040 are much appreciated by all of us in the `PlatformIO` and `Raspberry Pi` communities. Thanks you.