Golang interface for using the Silicon Labs CP2112 USB to SMBus/I2C bridge through its USB HID interface.

Depends on the go-hid package, which is based on the hidapi C interface.

• Download the pre-compiled hidapi release.
• Unzip to an easily accessible folder like C:\usr\lib\hidapi
• Copy the hidapi\include folder hidapi\hidapi
• Set the two environment variables CGO_CFLAGS and CGO_LDFLAGS as follows:
  • $env:CGO_CFLAGS = "-IC:\usr\lib\hidapi-win-0.12.0 -g -O2"
  • $env:CGO_LDFLAGS = "-LC:\usr\lib\hidapi-win-0.12.0\x64 -g -O2"
• Check that the Go environment is properly updated with the go env command.
• Copy the hidapi\x64\hidapi.dll to your current working directory, or somewhere that is accessible from the PATH variable.

To unset an PowerShell environment variable:

$env:CGO_FLAGS = $null