I am working on a real time control project with a ADSP-21469 develpoment kit, the program includes mainly three interrupts, one of them is the SPORT 1 that interrupts every 5us, another is the low priority timer to calcualte the control output about every 2ms, and the last one if the UART interrupt to communicate with a host PC. I need SPORT 1 interrupt be able to interrupt the timer and UART interrupts to ensure absolute reliable signal processing and sensor feedback. I use:
but this did not work, the SPORT1 interupt can interrupt UART interrupt, but seems can not inrerupt the timer interrupt. do I need to set priority in the PICRx registers,
any help is highly appreciated.