File content as of revision 3:7486869c8027:

#include "mbed.h"
#include "XNucleo53L0A1.h"
#include <stdio.h>
#include "Speaker.h"

Serial pc(USBTX,USBRX);
DigitalOut shdn(p26);
#define VL53L0_I2C_SDA   p28
#define VL53L0_I2C_SCL   p27

static XNucleo53L0A1 *board=NULL;
uint32_t distance;

bool state = false;
Speaker mySpeaker(p22);
double freq [30];

double *record(double freq1[30]) 
{
    double freq2;
    int status;
    uint32_t distance;
    DevI2C *device_i2c = new DevI2C(VL53L0_I2C_SDA, VL53L0_I2C_SCL);
    /* creates the 53L0A1 expansion board singleton obj */
    board = XNucleo53L0A1::instance(device_i2c, A2, D8, D2);
    shdn = 0; //must reset sensor for an mbed reset to work
    wait(0.1);
    shdn = 1;
    wait(0.1);
    /* init the 53L0A1 board with default values */
    status = board->init_board();
    while (status) {
        status = board->init_board();
    }
    for(int i = 0; i<30; i++)
    {
        status = board->sensor_centre->get_distance(&distance);
        if (status == VL53L0X_ERROR_NONE) {
            if (distance < 58){
                freq2 = 523.25;
                }
            else if(distance >= 58 && distance < 116){
                freq2 = 554.37;
                }
            else if(distance >= 116 && distance < 174){
                freq2 = 587.33;
                }
            else if(distance >= 174 && distance < 232){
                freq2 = 622.25;
                }
            else if(distance >= 232 && distance < 290){
                freq2 = 659.26;
                }
            else if(distance >= 290 && distance < 348){
                freq2 = 698.46;
                }
            else if(distance >= 348 && distance < 406){
                freq2 = 739.99;
                }
            else if(distance >= 406 && distance < 464){
                freq2 = 783.99;
                }
            else if(distance >= 464 && distance < 522){
                freq2 = 830.61;
                }
            else if(distance >= 522 && distance < 580){
                freq2 = 880.00;
                }
            else if(distance >= 580 && distance < 638){
                freq2 = 932.33;
                }
            else {
                freq2 = 987.77;
                }
            freq1[i] = freq2;
            wait (1);
            }
    }
    return freq1;
}

int main()
{
    while (1)
    {
        if (state == false){
            record(freq);
            state = true;
        }
        if (state == true){
            for (int i = 0; i<30; i++){
                mySpeaker.PlayNote(freq[i],1.0,0.1);
            }
        state = false;
        }
    }
}