Q: FAQ: Controlling the priority of interrupts in Z-stack (CC2430, CC2431, ZigBee

In the 1.4.0 release and later release the RF interrupt priority group higher than the rest of the interrupts. The setting of this priority is done in mac_mcu.c. There is a function macMcuInit() where the IP0 and IP1 interrupts priority levels are set. The CC2430 datasheet includes detailed information on how to set interrupt priorities - but note that changing interrupt priorities could affect stack performance.