References about Sipeed and Kendryte K210:

ArduinoCore-k210

kendryte-standalone-sdk

Sipeed documents

kendryte-standalone-demo many demo programs that can be adapted

https://github.com/sipeed Sipeed's main github

http://dl.sipeed.com/MAIX/HDK/Maix-Bit/Maix-Bit%20V2.0(with%20MEMS%20microphone) schematic of your board

Some-Sipeed-MAIX-GO-k210-stuff

kendryte_standalone_programming_guide_20190311144158_en all the information about programming peripherals on the K210 processor

Train, Convert, Run MobileNet on Sipeed MaixPy and MaixDuino !