I’ve taken the I2c slave example project in SPRAAN8 and ported it over for C2802x using the 2802x peripheral header files and examples. In running this example, I noticed that when the master sends a NACK and STOP, the NACK interrupt flag in the I2C Status Register is never set and the NACK INTCODE of 010 is never generated even though I have enabled NACK in the I2C Interrupt Enable Register. I get the STOP INTCODE of 110 and the SCD interrupt flag in the I2C Status Register is set. Is STOP a higher priority than NACK? Is that why the NACK interrupt condition is not reported? So is there anything in the C2802x I2C peripheral to indicate that a NACK was sent by the master when the C2802x is in slave mode? The I2C manual isn’t very clear.
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