Making a "PROGRAM" into a funtion I can call.

ok, here story......

code: [select]


#include <arduino.h>
//
//      code modified.
//      turn clockwise increment value.
//      turn counter clockwise decrement value.
//

// -----------------------------------------------------------------------------
// constants

const int                                 pinclk   = 2;     // used generating interrupts using clk signal
const int                                 pindt    = 3;     // used reading dt signal
const int                                 pinsw    = 4;     // used push button switch
const int                                 debounce = 10;     // used debounce routine

// -----------------------------------------------------------------------------
// global vars

volatile int                             virtualposition    = 0;

// -----------------------------------------------------------------------------
// forward decls

void isr();
void loop();
void setup();

// -----------------------------------------------------------------------------
// interrupt service routine executed when high low transition detected on clk


void isr() 
{

    static unsigned long                lastinterrupttime = 0;

    unsigned long                       interrupttime = millis();

    if (interrupttime - lastinterrupttime > debounce)
    {
        if (digitalread(pindt))
            virtualposition = (virtualposition + 1);
        else
            virtualposition = virtualposition - 1;
    }
    lastinterrupttime = interrupttime;
} // isr


// -----------------------------------------------------------------------------

void setup()
{
    serial.begin(9600);

    pinmode(pinclk,input);
    pinmode(pindt, input);
    pinmode(pinsw, input_pullup);

    attachinterrupt(0, isr, falling);   // interrupt 0 connected pin 2 on arduino uno

    serial.println("start");

} // setup

// -----------------------------------------------------------------------------

void loop()
{
    int                                    lastcount = 0;
    while (true)
    {
        if (!(digitalread(pinsw)))   // check if pushbutton pressed
        {       
            virtualposition = 0;            // if yes, reset counter zero
            while (!digitalread(pinsw)) {}  // wait til switch released
            delay(10);                      // debounce
            serial.println("reset");        // using word reset instead of count here find out buggy encoder
        }
        if (virtualposition != lastcount)
        {
            lastcount = virtualposition;
            serial.print("count = ");
            serial.println(virtualposition);
        }
    } // while
} //loop


this works.

the "original" 1 turn direction , numbers did front reversed code did.

now, nice piece of code.  works - think - doesn't anything.

i wanting use code can put rotary encoders in other projects.

but mean need turn can "include" in other codes.

i how instead of "serial.print........" return value calling code.
but stuck on how can include in other sketches.


could explain me how this?
i shall try in mean time, appreciate help.

code: [select]

    while (true)
running infinite loop inside infinite loop() pointless. rid of infinite loop.

creating series of functions (initencoder(), encodermoved(), etc.) want do. initencoder() function need take function pointer argument, can have multiple instances of encoder, each own isr.

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