How to solve Keil MDK 5.38a AC6 problem by update CMSIS file

1Introduction

This application note provides a guide to how to solve Keil MDK5.38a AC6 compilation problem.Starting with MDK5.37, the AC5(ARMCC) compiler is no longer installed by default and needs to be installed separately.If you use an older version of the CMSIS file, the compilation will fail, so we need to install plug-in AC5 or update the CMSIS file.

2Update CMSIS file

Click “Manage run”.

Choose the Core latest version.

Delete the below path, you can use AC6 compile well.