Hello Kristine: My SF_UART_COMMS_CFG_QUEUE_SIZE_WORDS is set to 100. I had to change all irq's to priority 0 then my UART's work as planned. I then added I2C drivers (did not need framework). At irq level 2 for the I2C drivers the I2C did not work. Changed all irq's for I2C to level 0 and it is working fine now. Bottom line so far is that when I set all user selectable irq's to level 0 I now have two UART's and one I2C working well. Today I add an RSPI and finally two more UART's. I will post my results. Thanks for your help !!! Steve D
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