2.5.5 Muliti Interrupt Source Assume: P2C0 is initial Low, active High,
P5C0 is initial High, active Low
P8C0 is initial Low, active High
P11C0 is initial High, active Low
as follows:
P5C0
P2C0
P8C0
P11C0
P2C0 & P5C0 are
return to normal
at the same time.
P8C0 & P11C0 are
return to normal at
the same time.
P2C0 & P5C0 are
active at the same
time.
P8C0 & P11C0
are active at the
same time.
Refer to DEMO5.C for the source. All these four falling edges & rising edges can
be detected by DEMO5.C.
Note: When the interrupt is active, the user program has to identify the active
signals. Multiple signals maybe active simultaneously. So the interrupt service
routine has to service all active signals at the same time.
OME-PIO-D96 User Manual (Ver.1.1, Mar/2003) ---- 14