NVIC_PriorityGroup_0 | 0 bits for pre-emption priority 4 bits for subpriority |
NVIC_PriorityGroup_1 | 1 bits for pre-emption priority 3 bits for subpriority |
NVIC_PriorityGroup_2 | 2 bits for pre-emption priority 2 bits for subpriority |
NVIC_PriorityGroup_3 | 3 bits for pre-emption priority 1 bits for subpriority |
NVIC_PriorityGroup_4 | 4 bits for pre-emption priority 0 bits for subpriority |