HAL_NVIC_SetPriorityGrouping() function

Sets the priority grouping field (preemption priority and subpriority) using the required unlock sequence.

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Declaration

Definition

from stm32f4xx_hal_cortex.h:260

void HAL_NVIC_SetPriorityGrouping(uint32_t PriorityGroup);

Implemented in stm32f4xx_hal_cortex.c:141

Arguments

Argument

Description

PriorityGroup

The priority grouping bits length. This parameter can be one of the following values: @arg NVIC_PRIORITYGROUP_0: 0 bits for preemption priority 4 bits for subpriority @arg NVIC_PRIORITYGROUP_1: 1 bits for preemption priority 3 bits for subpriority @arg NVIC_PRIORITYGROUP_2: 2 bits for preemption priority 2 bits for subpriority @arg NVIC_PRIORITYGROUP_3: 3 bits for preemption priority 1 bits for subpriority @arg NVIC_PRIORITYGROUP_4: 4 bits for preemption priority 0 bits for subpriority

Return value

None

Notes

When the NVIC_PriorityGroup_0 is selected, IRQ preemption is no more possible. The pending IRQ priority will be managed only by the subpriority.

Examples

References

from examples

HAL_NVIC_SetPriorityGrouping() function

Syntax

Arguments

Return value

Notes

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