update code from BL_MCU_SDK to add support for additional cores (BL808)

[sfranzyshen]

I am curious what the source for these files are? are they created by you? or pulled from somewhere else?
If these are your files, do you have any plans to support the bl808 platform?

[strongwong]

@sfranzyshen ,
Hi, thank you for following my repository.
Most of these files are from earlier versions of BL_MCU_SDK and I recreated them according to Arduino's file organization structure. I'm sorry that I didn't rebuild them according to the latest evolution of BL_MCU_SDK.
If you are sure you need it, I can try to rebuild them according to the latest version of BL_MCU_SDK to support BL702/BL616/BL808 and so on.

[sfranzyshen]

Thank you @strongwong for your quick response. I can not speak for the rest of the community but I would like to see a Arduino core for the BL808 ... as it has started to appear in development (Ox64, MAIX M1s) boards and modules. For me, it is an excellent platform to teach on ... as it has large ram (64MB) for interpretive environments (microPython, JS, WASM) and for under $10 US ... So I would like to see it ... and hopefully others will too