开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
  1. BITX20
  2. Messages
Single Messages Topics Expanded Polls

Re: Why do I2C bit-banging instead of using the Pi4 I2C controller?

 

There is a completely free I2C interface on pins 27 and 28. These are reserved by the firmware for RPi 'hat' modules.
The firmware can be instructed to ignore these pins correctly by using

disable_poe_fan = 1



and

force_eeprom_read = 0
Join [email protected] to automatically receive all group messages.