Hello, I meet a problem about interrupt preemption of mpc5604 these days. Our system has many interrupts, such as iic receive, uart receive, pit interrupt and so on . I set the uart interrupt priority to 5, which is higher than iic with 3, but when I debug, the uart interrupt can't preempt the iic's interrupt leading to it miss receiving some uart bytes.
In the reference manual, it says a higher priority can preempt lower priority. But are there any setting for it?
Thanks very much.