File content as of revision 0:171d347f33f7:

#include "mbed.h"
#include "DebounceIn.h"
#include "stdint.h"
#include "MCP23017.h"
#include "WattBob_TextLCD.h"
#include "VL6180.h"

//Hyperterminal configuration
//9600 bauds, 8-bit data, no parity
//VL6180X defines

#define IDENTIFICATIONMODEL_ID 0x0000

Serial PC(USBTX, USBRX);
VL6180  TOF_sensor(p28, p27);
DigitalOut myled(LED1);

#define     BACK_LIGHT_ON(INTERFACE)    INTERFACE->write_bit(1,BL_BIT)
#define     BACK_LIGHT_OFF(INTERFACE)   INTERFACE->write_bit(0,BL_BIT)

MCP23017            *par_port;
WattBob_TextLCD     *lcd;


DigitalOut myled1 (p12); DigitalOut myled2 (p13);
DigitalOut myled3 (p14); DigitalOut myled4 (p15);

DebounceIn pb1(p8); DebounceIn pb2(p9);
DebounceIn pb3(p10); DebounceIn pb4(p11);

int old_pb1 = 0, old_pb2 = 0, old_pb3 = 0, old_pb4 = 0;
int new_pb1, new_pb2, new_pb3, new_pb4;

int i = 0, j, row, led; 
int order[10][4];
int levelreset, tries, level = 1;
float delay; uint8_t dist;

/*int order[4][4] = {1,2,3,4,
4,3,2,1,
3,2,1,4,
2,1,3,4};*/

void level1();
void reset();
void light(int,int);

int Dist()
{
    lcd->cls(); lcd->locate(0,0);
    dist = TOF_sensor.getDistance();
    lcd->printf("Dist=%d", dist);
    wait(0.5);
    return dist;
}

// SPST Pushbutton count demo using internal PullUp function
// no external PullUp resistor needed
// Pushbutton from P8 to GND.
// Demonstrates need for debounce - will not count more than once per button hit
// This ocuurs on all switches due to mechanical contact bounce


int main()
{
    // Use internal pullup for pushbutton
    pb1.mode(PullUp);
    pb2.mode(PullUp);
    pb3.mode(PullUp);
    pb4.mode(PullUp);
    // Delay for initial pullup to take effect
    wait(.001);
    TOF_sensor.VL6180_Init();
    par_port = new MCP23017(p9, p10, 0x40);
    par_port->config(0x0F00, 0x0F00, 0x0F00);           // configure MCP23017 chip on WattBob
    lcd = new WattBob_TextLCD(par_port);
    BACK_LIGHT_ON(par_port);
    //char c = PC.getc();
    //if (c == 'o')
    while(1)
    {
        while(Dist() < 250)
        while(level <= 4)
        {
            if (level == 0) break;
            for (row=0; row<10; row++)
                for (j=0; j<4; j++)
                    { order [row][j] = (rand()% 4) + 1;}
            row = rand()%4;
            tries = 0;
            level1();
        }
    }
}



void level1()
{
    while(Dist() < 250)
    {
        levelreset = 0;
        for (j=0; j<4; j++)
        { led = order[row][j]; light(led,1); } //switches on the respective LEDs according to the order

    while(Dist() < 250)
    {
        new_pb1 = pb1; new_pb2 = pb2;
        new_pb3 = pb3; new_pb4 = pb4;
        
    if( ((new_pb1 == 0) && (old_pb1 == 1)) || ((new_pb2 == 0) && (old_pb2 == 1)) || ((new_pb3 == 0) && (old_pb3 == 1)) || ((new_pb4 == 0) && (old_pb4 == 1)) )
    {
        switch(order[row][i])
        {
            case 1:
            {
                if((new_pb1 == 0) && (old_pb1 == 1))
                { light(1,0); i++;}
                else {reset(); levelreset = 1; tries++;}
            } break;
            case 2:
            {
                if((new_pb2 == 0) && (old_pb2 == 1))
                { light(2,0); i++;}
                else {reset(); levelreset = 1; tries++;}
            } break;
            case 3:
            {
                if((new_pb3 == 0) && (old_pb3 == 1))
                { light(3,0); i++;}
                else {reset(); levelreset = 1; tries++;}
            } break;
            case 4:
            {
                if((new_pb4 == 0) && (old_pb4 == 1))
                { light(4,0); i++;}
                else {reset(); levelreset = 1; tries++;}
            } break;
        }
        if (levelreset == 1)
        {
            if (tries > 3) {reset(); level = 0; return;}
            else break;
        }
        else if (levelreset == 0)
            if(i >= 4){level++; reset(); return;}
    }
        old_pb1 = new_pb1; old_pb2 = new_pb2;
        old_pb3 = new_pb3; old_pb4 = new_pb4;
    }
    }
}



void reset() //function to turn off LEDs and reset order
{
    myled1 = 0; myled2 = 0; myled3 = 0; myled4 = 0;
    i = 0; wait(1); return;
}

void light(int n, int m) //to turn on LEDs
{
    if (m == 0) //for answer
    {
        //turns LED on for 1 second
        if(n == 1) {myled1 = 1; wait(1); myled1 = 0;}
        else if(n == 2) {myled2 = 1; wait(1); myled2 = 0;}
        else if(n == 3) {myled3 = 1; wait(1); myled3 = 0;}
        else if(n == 4) {myled4 = 1; wait(1); myled4 = 0;}
    }
    
    else if (m == 1) //for demo
    {
        //sets delay based on level number
        if(level == 1) delay = 1;
        else if (level == 2) delay = 0.75;
        else if (level == 3) delay = 0.50;
        else if (level == 4) delay = 0.25;
        
        //turns LED on for delay seconds before turning off
        if(n == 1) {myled1 = 1; wait(delay); myled1 = 0; wait(0.2);}
        else if(n == 2) {myled2 = 1; wait(delay); myled2 = 0; wait(0.2);}
        else if(n == 3) {myled3 = 1; wait(delay); myled3 = 0; wait(0.2);}
        else if(n == 4) {myled4 = 1; wait(delay); myled4 = 0; wait(0.2);}
    }
    return;
}