You need Keil MDK ARM installed of the latest version. Then you should have the path
C:\Keil_v5\ARM\ARMCLANG
copy the reference_package.json
as package.json
into this folder.
If your path is different, adapt the platformio.ini
with regards to the path
platform_packages = toolchain-armcc@symlink://C:\Keil_v5\ARM\ARMCLANG
GCC
Linking .pio\build\GCC_genericSTM32F103VC\firmware.elf
Checking size .pio\build\GCC_genericSTM32F103VC\firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM: [ ] 2.3% (used 1152 bytes from 49152 bytes)
Flash: [ ] 1.0% (used 2552 bytes from 262144 bytes)
ARMCLANG
Linking .pio\build\ARMCC_genericSTM32F103VC\firmware.elf
Checking size .pio\build\ARMCC_genericSTM32F103VC\firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM: [ ] 2.1% (used 1048 bytes from 49152 bytes)
Flash: [ ] 0.8% (used 2140 bytes from 262144 bytes)```
No idea, no HW.