Maix GO uart

Hello everyone,
I was trying to perform serial communication in my Maix Go board but when I entered the following command:
fm.register(baord_info.PIN15,fm.fpioa.UART1_TX)

An error is given:
NameError: name ‘board info’ isn’t defined

The above command is copied from here: https://maixpy.sipeed.com/zh/libs/machine/uart.html
Which should works well but now I don’t know how to solve this. Is there anyone know the reason?

hi, please refer to maixpy_scripts in github, the wiki is some how out of date