File content as of revision 0:d8909ac31fbf:

#include "mbed.h"

//Button interrupts
InterruptIn start_stop_b(p5);
InterruptIn pitch_b(p6);
InterruptIn string_b(p7);
InterruptIn mode_b(p8);

//

//AnalogIn
AnalogIn guitar(p20);

//Motor Controller outputs
PwmOut step(p26);
DigitalOut direction(p27);
DigitalOut motor_enable(p28);

//Local File pointer
LocalFileSystem local("local");

//Global Variables
bool begin=false;


//Functions
void device_init(){
return;}

void start(){
begin=true;
return;}

void stop(){
return;}

void pitch(){
return;}

void string(){
return;}

void mode(){
return;}



int main() {
    int state=0, next_state=0;


    start_stop_b.rise(&start);//Assign what functions to call when
    pitch_b.rise(&pitch);     //the interrupt occurs
    string_b.rise(&string);
    mode_b.rise(&mode);
    
    device_init();

   
    while (1) {
        state=next_state;
        switch (state) {
            case(0)://Waiting for user input
            if(begin){
                next_state=1;
            }
            else
                next_state=0;
                break;
            case(1)://Take Sample
                break;
            case(2)://Take FFT
                break;
            case(3)://Analyze FFT for Peaks
                break;
            case(4)://Compare current freq with desired
            //Determine Hz per step
                break;
            case(5)://Motor Direction Calibration
                break;
            case(6)://Step Up
                break;
            case(7)://Step Down
                break;
            default:
                break;
        }

    }
}