Commits on Jul 26, 2022

1. RP2040: Fix I2C lockups and improve error handling …

   Problem:
   
   * in edge-case scenarios the tx empty interrupt was still enabled after a
     transmission was finished. This would lead to endless interrupt tail
     chaining that completely starved the system.
   
   Solution:
   
   * all irqs are now disabled at the end of a transaction by default
   
   Error handling:
   
   * all error condition irqs like over and underruns of tx and rx fifos
     are now enabled and handled with an wake-up of the sleeping thread
     plus disabling of all irqs
   
   Optimizations:
   
   * irq status register is only read once for evalutation in the irq
     handler
   * better utilization of the rx fifos during reception, which are now only
     read if all data has been successfully received.

   

   KarlK90 committed Jul 26, 2022
   Configuration menu

   • View commit details
   • Copy full SHA for c7dbb1d
   • Browse repository at this point

   Copy the full SHA

   c7dbb1d View commit details

   Browse the repository at this point in the history