From: cl@isbd.net   
      
   I use I2C extensively on a Pi 4B on our little boat.  To do all the   
   I2C stuff I use the smbus package (the standard python3-smbus that is).   
      
   Currently I have a 120 second delay after booting the system before   
   actually using the I2C bus, I can't quite remember when I did this or   
   quite why it's so long.  It's likely much longer than necessary as   
   this was originally implemented on a much older Pi than the current 4B.   
      
   So, the best way to reduce the delay would be to have some definite   
   way of telling if the SMBus/I2C is up and running. Does anyone know   
   how one might do this?  Alternatively does anyone here use smbus on a   
   Pi 4B with a much shorter delay?   
      
      
   --   
   Chris Green   
   ·   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)