File content as of revision 16:581a3b02f4c3:

#include "mbed.h"
#include "rtos.h"
#include "wave_player.h"
#include "SDFileSystem.h"
#include "button.h"

// DEFINE I/O
PwmOut myservo(p21);
DigitalIn pb1 (p20);
PwmOut myservo2(p22);
DigitalIn pb2 (p19);
DigitalOut led1(LED1);
DigitalOut led2(LED4);

//AnalogIn linpot(p20);
//Serial pc(USBTX, USBRX);
//SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card
//AnalogOut DACout(p26);
//wave_player waver(&DACout);
button button1(myservo, pb1);
button button2(myservo2, pb2);

// INITIALIZE VARIABLES
// add mode, reset buttons
int start = 0;
int submit = 0;
// FIX THIS: button up: state = 2, button halfway: state = 0; button down: state = 1
int state = 2;
int state2 = 2;
int count = 0;

// FUNCTIONS
// play a file on the speaker
/*void playSound(wave_player waver)
{
    FILE *wave_file;
    wave_file=fopen("/sd/lesson.wav","r");
    waver.play(wave_file);
    fclose(wave_file);
}*/

// THREADS

// thread for the custom button
void button_thread()
{
    while(true) {
        // button was up and is moving down, move servo in
        //pc.printf("in button thread");
        if (pb1 == 1 && state == 2) {
            button1.moveServoIn();
            state = 1;
            led1 = 0;
        }
        // button was down and is being pushed again, move servo out
        else if (pb1 == 1 && state == 1) {
            button1.moveServoOut();
            state = 2;
            led1 = 1;
        }
        Thread::wait(100); // wait till thread is done
    }
}

void button2_thread()
{
    // TODO: Add states
    while(true) {
    // button was up and is moving down, move servo in
        if (pb2 == 1 && state2 == 2) {
                button2.moveServoIn();
                state2 = 1;
                led2 = 0;
                count = 0;
        }
        // button was down and is being pushed again, move servo out
        else if (pb2 == 1 && state2 == 1) {
            button2.moveServoOut();
            state2 = 2;
            led2 = 1;
        }
        Thread::wait(100); // wait till thread is done
    }
}

void submit_thread()
{
    Thread::wait(500); // wait till thread is done
}

void start_thread()
{
    // read pb_start
    // if 1
    start = 1;
    //pc.printf("start %d ", start);
    // else 0
    Thread::wait(500); // wait till thread is done
}


int main()
{
    // SETUP
    // pull up the pushbutton to prevent bouncing
    //pb1.mode(PullUp);
    //pb2.mode(PullUp);
    //wait(.001);
    
    // servo begins at 30 degrees
    // replace with a button setup function
    for(int i=0; i<=3; i++) {
        myservo = i/100.0;
        wait(0.01);
    }
    for(int i=0; i<=3; i++) {
        myservo2 = i/100.0;
        wait(0.01);
    }

    led1 = 1;
    led2 = 1;
    Thread t3(button_thread);
    Thread t4(button2_thread);
    t3.start(button_thread);
    t4.start(button2_thread);

    // start threads for reset, mode, start
    //Thread t1(start_thread);
    //pc.printf("start thread");
    //Thread t2(submit_thread);
    // setup SDcard and Speaker

    // when started
    //while (start == 0){}
    //Thread t3(button_thread);
    //pc.printf("button thread");
    //Thread t4(button2_thread);
    //pc.printf("button2 thread");

    //Thread t3(submit_thread);

    // when submitted
    //while (submit == 0) {}

    // start button threads and submit thread
    // if submit close button threads and submit thread
    // check result
    // play results on speaker
    // save results

    // read linear potentiometer
    //if (linpot < 0.5) {
    //float potval = linpot;
    //pc.printf("linear pot: %f\n", potval);
    // MAIN THREAD
    while(true) {
        Thread::wait(500); // wait till thread is done
    }
}