Interrupt Enable Control Function; Table 2.6:Interrupt Disable/Enable Control; Interrupt Triggering Edge Control; Table 2.7:Interrupt Triggering Edge Control - Advantech UNO-3074 User Manual

2.5.6 Interrupt Enable Control Function

Table 2.6: Interrupt Disable/Enable Control
DI0EN & DI1EN
0
1
The user can choose to enable or disable the interrupt function by writing
its corresponding value to the interrupt disable/enable control bit in the
interrupt control register, as shown in Table 2.6.

2.5.7 Interrupt Triggering Edge Control

The interrupt can be triggered by a rising edge or a falling edge of the
interrupt signal, as determined by the value in the interrupt triggering edge
control bit in the interrupt control register, as shown in Table 2.7.
Table 2.7: Interrupt Triggering Edge Control
DI0TE & DI1TE
0
1

2.5.8 Interrupt Flag Bit

The interrupt flag bit is a flag indicating the status of an interrupt. It is a
readable/writable bit. To find the status of the interrupt, you have to read
the bit value. To clear the interrupt, you have to write "1" to this bit. This
bit must first be cleared to service the next coming interrupt.
Table 2.8: Interrupt Flag Bit Values
DI0F & DI1F
Read
Write
UNO-3074 User Manual
Interrupt Disable/Enable Control
Disable
Enable
Triggering edge of interrupt signal
Falling edge trigger
Rising edge trigger
Interrupt Status
0 No interrupt
1 Interrupt occur
0 Don't care
1 Clear interrupt
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