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Code: Select all

Digital Input: 0 > State: 1
Digital Input: 1 > State: 0
Digital Input: 2 > State: 0
Digital Input: 3 > State: 0
Digital Input: 4 > State: 0
Digital Input: 5 > State: 0
Digital Input: 6 > State: 0
Digital Input: 7 > State: 0
Digital Input: 0 > State: 0
Digital Input: 0 > State: 1
Digital Input: 0 > State: 0
Digital Input: 0 > State: 1
(and so on)

Code: Select all

//
//  sbcexample.c
//
// This simple example creates an InterfaceKit handle, hooks the event
// handlers and opens it.
// It reads the status of the inputs and outputs then waits for an InterfaceKit
// to be attached and waits for events to be fired.
// Digital output 0 will trigger on when any sensor value is greater than 500.
//
// Modified by Kat Dornian on 2014-03-26.
//
// Copyright 2014 Phidgets Inc.
// This work is licensed under the Creative Commons Attribution 2.5 Canada License.
// To view a copy of this license, visit http://creativecommons.org/licenses/by/2.5/ca/

// To compile:
// g++ -o test encoder.c -lphidget21 -ldl -lpthread -lm

#include <stdio.h>
#include <unistd.h>
#include <phidget21.h>
#include "kservo.hpp"
#define phi0 0

//Callback that will run if an input changes.
//Index - Index of the input that generated the event, State - boolean (0 or 1) representing the input state (on or off)
int CCONV InputChangeHandler(CPhidgetInterfaceKitHandle IFK, void *usrptr, int Index, int State)
{
		fprintf(stdout, "Digital Input: %d > State: %d\n", Index, State);
	    fflush(stdout);

	return 0;
}

int interfacekit_simple()
{
	int result;
	const char *err;

	//Declare an InterfaceKit handle
	CPhidgetInterfaceKitHandle ifKit = 0;

	//create the InterfaceKit object
	CPhidgetInterfaceKit_create(&ifKit);

	//open the interfacekit for device connections
	CPhidget_open((CPhidgetHandle)ifKit, -1);

	//get the program to wait for an interface kit device to be attached
	printf("Waiting for interface kit to be attached....");

	if((result = CPhidget_waitForAttachment((CPhidgetHandle)ifKit, 10000))) {
		CPhidget_getErrorDescription(result, &err);
		printf("Problem waiting for attachment: %s\n", err);

		return 0;
	}

	//Registers a callback that will run if an input changes.
	//Requires the handle for the Phidget, the function that will be called, and an arbitrary pointer that will be supplied to the callback function (may be NULL).

	CPhidgetInterfaceKit_set_OnInputChange_Handler (ifKit, InputChangeHandler, NULL);

	//keep displaying interface kit until program is ended
    while(1) {
        usleep(1000);
    }

	CPhidget_close((CPhidgetHandle)ifKit);
	CPhidget_delete((CPhidgetHandle)ifKit);

	//all done, exit
	return 0;
}

int main(int argc, char* argv[])
{
	interfacekit_simple();

	// int enc = CPhidgetRFID_getOutputState(IFK, 0);
	//printf("%d \n",&enc);

	return 0;
}