[How to configure PlatformIO to debug code via JLink] #mbed #platformio #jlink

platformio.ini

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; http://docs.platformio.org/page/projectconf.html

[env:nucleo_f429zi]
platform = ststm32
board = nucleo_f429zi
framework = mbed
; Debug options
debug_tool = custom
debug_server =
    D:/lang/segger/jlink/JLinkGDBServer
    -singlerun
    -if
    SWD
    -select
    USB
    -port
    2331
    -device
    STM32F429ZI

platformio_jlink.md

From Project Configuration File platformio.ini — PlatformIO 3.5.0a4 documentation, it provides an example of how to configure Jlink GDB server:

[env:bluepill_f103c8]
...
; Debug options
debug_tool = custom
debug_server =
    JLinkGDBServer
    -singlerun
    -if
    SWD
    -select
    USB
    -port
    2331
    -device
    STM32F103C8

If JLinkGDBServer.exe is not included in PATH, then you need to specify the full file name of JLinkGDBServer.exe.

References

1. Project Configuration File platformio.ini — PlatformIO 3.5.0a4 documentation
2. J-Link and ST Nucleo
3. Advanced Scripting — PlatformIO 3.5.0a4 documentation
4. arduino - Platform.io upload to Teensy 3.6 via SWD (J-LINK) - Stack Overflow

Alternatively just:

upload_protocol = jlink
debug_tool = jlink