User`s manual

BL4S100 User’s Manual 76

addISROut

int addISROut(int channel, int ier, void (*handler)());

FUNCTION DESCRIPTION

Adds an interrupt handler for the interrupts specified in the ier parameter for the given

RIO block hosting the given digital output pin. The interrupt service routine (ISR) is al-

ways disabled when created. Call

enableISR() to enable the ISR. The ISR handler

given is responsible for clearing the interrupt(s) within the hosting RIO block.

PARAMETERS

channel digital output channel to bind to ISR, 0–7 (OUT0–OUT7)

ier bit mask of interrupt(s) this handler services:

BL_IER_DQE — decrement/quadrature/end

BL_IER_IIB — increment/inphase/begin

BL_IER_ROLL_D — counter rollover on decrement

BL_IER_ROLL_I — counter rollover on increment

BL_IER_MATCH3 — Match 3 condition

BL_IER_MATCH2 — Match 2 condition

BL_IER_MATCH1 — Match 1 condition

BL_IER_MATCH0 — Match 0 condition

handler pointer to the interrupt service function

RETURN VALUE

Success — returns the handler ID number (0..RSB_MAX_ISR-1).

-EINVAL— Invalid parameter given.

-ENOSPC — No more room in ISR table (increase RSB_MAX_ISR).