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4.7.10. __enable_irq

This intrinsic enables IRQ interrupts.

Note

Typically, this intrinsic enables IRQ interrupts by clearing the I-bit in the CPSR. However, for Cortex M-profile processors, it clears the exception mask register (PRIMASK).

Syntax

void __enable_irq(void)

Restrictions

The __enable_irq intrinsic can only be executed in privileged modes, that is, in non user modes. In User mode this intrinsic does not change the interrupt flags in the CPSR.

See also

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