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3. Interrupt Handling
Interrupt Handling
The inputs of both CIOs Z8536 or the inputs of both UPPs HD63143 can be configurated as interrupt
sources on the DPIO32.
The CIOs are directly connected to the local interrupt logic. The HD63143 can trigger an interrupt,
because its interrupt output can be applied to a CIO input via multiplexers (see hardware manual
DPIO32, figure 'Assignment of Inputs and Outputs to the Controllers'). The input channels used for this
are channel 16 and channel 32. If the HD63143 are to trigger interrupts, these inputs cannot be used for
external signals anymore!
The entries for the configuration of CIO-Z8536 interrupts and HD63143 interrupts are constructed
largely independently from each other. They use, however, the same parameters for the assignment of
EVENTs to the pins. Therefore, always the last entry made for this pin is valid!
3.1 Setting the Interrupt Modes of the CIO Z8536 Inputs - IRQDP1
This function sets the interrupt mode for the 32 inputs guided to the CIOs Z8536.
Declaration:
SPC IRQDP1 ENTRY (FIXED, FIXED) GLOBAL;
Variable definition:
DCL (irpin, irmode) FIXED;
Value ranges:
irpin : Number of input channel:
0 ...no channel selected
1...32 ...input channel of the DPIO32
Attention: The interrupt mode of pins 16 and 32 can also be changed later via
function IRQUP1!
irmode: Interrupt mode:
0 ...no interrupt
1 ...interrupt at rising edge
2 ...interrupt at falling edge
3 ...pulse mode: interrupt at rising edge
4 ...pulse mode: interrupt at falling edge
5 ...pulse mode: interrupt at rising and falling edge
Procedure call:
CALL IRQDP1 (irpin, irmode)
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