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Arm Mbed OS is a platform operating system designed for the internet of things
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Mbed breaks the debugger interface on the Disco-L475VG-IOT01A #14182

Closed ithinuel closed 3 years ago

ithinuel commented 3 years ago

Description of defect

Mbed does something to the debug interface that prevents common debugger to connect normally to board. Only connect under reset works, and the debugger session only works for the early stages of boot. As Mbed/sdk kicks in the connection to the target is lost.

Target(s) affected by this defect ?

disco l475vg iot01a

Toolchain(s) (name and version) displaying this defect ?

GCC_ARM

What version of Mbed-os are you using (tag or sha) ?

2e905a0060b

What version(s) of tools are you using. List all that apply (E.g. mbed-cli)

openocd 0.10.0 pyocd 0.28.3 mbed 1.10.5

How is this defect reproduced ?

build a blinky or a test app. Try to step through it using gdb connected to openocd or pyocd.

ciarmcom commented 3 years ago

Thank you for raising this detailed GitHub issue. I am now notifying our internal issue triagers. Internal Jira reference: https://jira.arm.com/browse/IOTOSM-3286

jeromecoutant commented 3 years ago

Do you have #14032 ?

ithinuel commented 3 years ago

I did not ! It seems to work fine now. Thank you !