Regression seen in Blinky application on Target nRF52840_DK

[naveenkaje]

Description

The blinky application did not work with nRF52840_DK with ARM compiler on master branch’s tip. See details of the commits and tools used below.

• Target: NRF62840_DK
• Tool chain: ARM Compiler 5.06
• Tools used: mbed cli, built with command "mbed compile -m NRF52840_DK -t ARM”
• SHA: f4382d9 (tip as of 7/11)
• Steps to reproduce: compile blinky using the above commands and flash on nRF52840 dev kit. The blinky does not work as expected. Use GCC_ARM compiler instead, and it works.

Other useful information:
We found out that it worked with mbed-os-5.9.0 (#866850acc15e86cd4ac11bf4404078a49f921ddd), it worked as expecte on nRF52840

The tip (SHA: f4382d9 works for blinky with nRF52_DK)

Please feel free to reach out to me if you need further information.

Issue request type

[ ] Question
[ ] Enhancement
[ x] Bug

[naveenkaje]

I forgot to mention that the application builds and works fine on GCC_ARM tool chain.

[TacoGrandeTX]

My nRF52840 programs are working okay on mbed-os-5.9.2 using ARM compiler 5.

[marcuschangarm]

This should fix it: https://github.com/marcuschangarm/mbed-os/commit/eecdcd9e880c465fccd6366cefa7a54884cb48c4

[adbridge]

Fixed by the aforementioned PR