Use the Interrupt Priority Registers to assign a priority from 0 to 3 to each of the available interrupts. 0 is the highest priority, and 3 is the lowest. Note: Writing 1 to an NVIC_ICPR bit does not affect the active state of the corresponding interrupt. These registers are only word-accessible
IP_0 | Priority of interrupt 0 |
IP_1 | Priority of interrupt 1 |
IP_2 | Priority of interrupt 2 |
IP_3 | Priority of interrupt 3 |