Z-World PK2300, User Manual, Page: 40 / 139

PK2300 40 s System Development
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Refer to Chapter 5, “Software Reference,” for further details.
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How to Read the Inputs
This section provides information on using the Dynamic C software drivers
for the PK2300’s protected digital inputs.
The following software driver reads the status of a specified protected
digital input. A sample program is provided.
• int eioBrdDI ( unsigned chanNum )
Reads the state of an input channel.
PARAMETER:
chanNum
must be a number ranging from 0 (for
IN-01) through 15 (for IN-16).
RETURN VALUE:
• 0 if and only if the input channel reads low.
• 1 if and only if the input channel reads high.
The Input Demonstration Program shows how to read the status of a digital
input.
Input Demonstration Program
#use eziopk23.lib // Use the PK2300 I/O
// library
#define INPUT1 0 // Assign INPUT1 protected
// digital input IN-01
main() {
int I; // Create integer I
eioBrdInit(0); // Initialize the PK2300
I = eioBrdDI(INPUT1); // Assign integer I the
// status of INPUT1
printf(“IN-01 Status: %d\n”, I);
// Print status of IN-01
// to the STDIO window
I = eioBrdDI(INPUT1); // Assign integer I the
// status of INPUT1
printf(“IN-01 Status: %d\n”, I);
// Print status of IN-01
// to the STDIO window
} // End of program