The MAIX Go has a MSA300 accelerometer. I have been trying to get it to work but without success. Somehow the i2c does not seem to respond. There is no example in maixpy or in kendryte-standalone-demo. Has anyone got it to work or know of an example?
After digging in the arduino code you mentioned I found the mistake. I made the classical error of getting the i2c address wrong. In the schematic it states 0x4C and 0x4D, that means that the actual i2c address is shifted right one bit: 0x26. I also noted that the I2C1_SDA, and I2C1_SCL should both be I2C0.
Anyway, for those interested in a standalone-sdk implementation have a look at the accelerometer example here.
You can use any I2C device with FPIO, and there is actually no difference between them.