File content as of revision 1:a1067f80d074:

#include "mbed.h"
#include "TARDIS_ARCHIVE.h"
DigitalOut l(LED1), l2(LED2), l3(LED3), l4(LED4);
/********************************************************/
AnalogIn pitch(p19);                //Potentiometer sets up the pitch of the song
AnalogIn tempo(p20);                //Potentiometer to set tempo of the song
DigitalIn joyUP(p15);               //Play song of the Doctor (Master)
DigitalIn joyDOWN(p12);             //Play song of the Companion (Slave)
DigitalIn joyMID(p14);              //Stop playing either master or Slave song.
PwmOut speaker(p26);                //Speaker on the mbed

/*============SERIAL COMMUNICATION==============*/
I2CSlave companion(p9, p10);          //mosi/miso/sck of the Slave
/********************************************************/
Serial pc(USBTX, USBRX);
int send_note;                   //word we will send
int rec_note;                    //value received from master
const int addr = 0x52;

/************************************|I Am the Doctor|**********************************/
float frequency[]= {//JJ song
};
float beat[]= {//JJ beat
};
/***************************************************************************************/

/*companion.write(switch_word); //load up word to send
//test for I2C, and act accordingly
int i = companion.receive();
if (i == 3)
{
//companion is addressed, Master will write
    recd_val= companion.read();*/


int main()
{
    companion.address(addr);
    while(1) {

        if (joyUP) {
            playTheDoctor();
            wait(0.01);
        } else if (joyDOWN) {
            playTheNote();
            wait(0.01);
        } else if (joyMID) {
            songOfMyPeople(frequency, beat);
            wait(0.01);
        }
        wait (0.01);
    }
}
//========================================================================================================================================
//========================================================================================================================================
//========================================================================================================================================

/*********************************************************************
******************************THE COMPANION***************************
********************************aka slave*****************************
**********************************************************************/
/*TODO: 1) Figure out what stop() returns, if any
        2) Add print statements to see what is getting sent/received
        Bonus) Implement potentiameters for tempo and pitch */
void playTheNote()
{
    for (int i=0; i<=8; i++) {
        send_note = frequency[i];
        companion.write(send_note);

        float value = lookupNoteFrq(frequency, i);
        speaker.period(1/(2*value)); // set PWM period
        speaker=0.5;
        wait(0.4*beat[i]);

        if (joyMID) {
            speaker = 0; //reset speaker duty cycle
            companion.write(-1);
            wait(2);     //delay for inferior humans
            return;
        } else if(joyDOWN) {
            speaker = 0;
            companion.stop();
            return;
        }
    }
    speaker = 0;
    companion.stop();





}

/*********************************************************************
******************************THE DOCTOR******************************
********************************aka master****************************
**********************************************************************/
/*TODO: 1) Make sure while loop condition is doing what it suppose to
        2) Initialize receive note, and play it
        3) Implement interrupts
        4) Stopping conditions
        Bonus) Potentiometers for pitch and tempo
*/
void playTheDoctor()
{

    while(companion.receive()!=0) {
        send_note = companion.receive();
        playTheNote(rec_note);
        if (joyMID) {
            speaker = 0;                    //reset speaker duty cycle
            companion.stop();           //force end condition for both master and companion
            wait(2);                        //delay for inferior humans
            return;
        } else if(joyUP) {
            speaker = 0;                   //read joyUp value.
            companion.stop();           //force end condition due to interuppt
            return;
        }
    }
    speaker = 0;
    companion.stop();//force end condition
    return;


}
/*===================================================================*/
//===================Goon Squad of helper functions==================//
void playTheNote(int k)
{
    float frqNote = notes[k];
    pc.printf("\n\rFrq of the companion note = '%f", k,
              "\n\rFrq of the companion note = '%f'", frqNote);
    speaker.period(1/(2*frqNote)); // set PWM period
    speaker=0.5;
    return;
}

/*====================Original Demo====================================*/
void songOfMyPeople(float frequency[], float beat[])
{
    while(1) { //run infinetly unless interupted
        for (int i=0; i<=8; i++) {
            float value = lookupNoteFrq(frequency, i);
            speaker.period(1/(2*value)); // set PWM period
            speaker=0.5; // set duty cycle
            wait(0.4*beat[i]);
            if (joyMID) {
                speaker = 0; //reset speaker duty cycle
                wait(2);     //delay for inferior humans
                return;
            }
        }
        speaker = 0;
        wait(0.25);
    }
}

/*===================================================================*/
float lookupNoteFrq(float frq[], int k)
{
    int location_of_note = frequency[k];
    pc.printf("\n\rLocation of the note = '%d'", location_of_note);

    float vNote = notes[location_of_note];
    pc.printf("\n\rFrq of the note = '%f'", vNote);
    return vNote;
}