User`s manual

BL4S100 User’s Manual 77

setIER

int setIER(int isr_handle, int ier);

FUNCTION DESCRIPTION

Sets the Interrupt Enable Register (IER) mask for an interrupt handler. Note that the in-

terrupt handler must be currently disabled to set the IER value. Disabling the ISR can

be done by calling

enableISR() with a zero for the enable parameter.

PARAMETERS

isr_handle index to the desired ISR

ier bit mask of interrupts this handler services (bit positions match

RIO Interrupt Enable and Status registers)

RETURN VALUE

0 — success

-EINVAL— Invalid parameter given.

-EPERM — Handler is enabled, can't change IER.