Make api-example can parse long API message. Thanks to Mikeqin
Polling delay, Long coinbase support, OVERHEAT to 98, Add LED on API
Avalon2: add more comments on Avalon2 options
Avalon2: MM needs n2size length <= 4
Add Avalon3.5 MM version pattern
Add iic interface
Add CDC V/P id for avalon3.5
Use xfer to exchange iic data
Delete unused code
Sync with protocal type
Add avalon2 usb cleanup
Ignore timeout when get data
Merge canaan avalon3.5