The following picture is the optional picture of the interface compiler of the magic wand after the compiler version 5 has been downloaded and loaded. The pre-installed version of keil 5.37 is v6.18. If you learn STM32, you will buy a development board. Whether it is wildfire, punctuality or general, the data routines given are several years ago, and the compilation error in keil5.37, because there is no compiler version5.
Connect first: Legacy Arm Compilers – Arm Developer
After downloading, install it in D:\keil53.7\ARM\Compiler_5.06u7, Compiler_5.06u7 is a new folder,
Settings: project->manage->projet items->Folder/Extensions->click...->Add anther ARM Compiler Version to lister->select the path installed above.
