My board is not in list. I want program in “A31G224CLN” microcontroller of ABOV Semiconductor Co. Ltd.
Wow that only gives 5 results on google.
PlatformIO would have to explicitly write a platform and integration code to work with this bespoke MCU. You can file an issue at https://github.com/platformio/platformio-core/issues, but with little popularity an official integration is questionable.