File content as of revision 0:6d566e6d9aa7:

#include "mbed.h"

#include "C12832.h" //LCD display library

Serial pc(USBTX,USBRX); //serial port to communicate with pc
//PwmOut PWM1(p21); //used for the pwm setup
//PwmOut led (LED1);

//task5 testing and orages song
DigitalIn fire(p14);
PwmOut spkr(p26); //pwm directed to pin26 speaker


//extra song, Star WARS
float frequency [] = {175,175,175,233,349,311,294,523,932,698,622,587,523,932,698,622,587,622,523};
float beat [] = {21,21,21,128,64,21,21,21,128,64,21,21,21,128,64,21,21,21,128};
int length = sizeof(beat)/sizeof(beat[0]); //to get the length of the array //not use it in a main()

//oranges and lemons song
//float frequency [] = {659, 554, 659, 554, 550, 494, 554, 587, 494, 659, 554, 440}; //frequency array
//float beat[] = {1, 1, 1, 1, 1, 0.5, 0.5, 1, 1, 1, 1, 2}; //beat array

C12832 lcd(p5, p7, p6, p8, p11); //define lcd pins

char getChar();
float getFloat();
//void basicPWM();
//void ledPwm(float);


int main()
{
    //Task2.1
    //pc.printf("Workshop 6\n\r"); //the \n\r gives new line and cariage return carriage return
    
    //Task2.2
    /*char c; //this holds the data pc sends
    while(1)
    {
        c = pc.getc(); //gets character from input stream
        lcd.cls();
        lcd.locate(10,10);
        lcd.printf("%c", c); //display the character
    }*/
    
    //Task2.3
    /*while(1)
    {
        float num = getFloat(); //read the formated data as printf prints it
        lcd.cls();
        lcd.locate(10,10);
        lcd.printf("%4.3f",num); //4.3 decimal accuracy
    }*/
    //basicPWM();
    
    //Task4
    /*float brightness = 0.0;
    char c;
    
    while(1)
    {
        pc.printf("Control of LED dimmer by host terminal \n\r");
        pc.printf("Press 'u'= brighter, 'd'=dimmer\n\r");
        pc.printf("%c %1.3f \n \r", c, brightness);
        
        c = pc.getc();

        if(brightness > 0.2) //set 0.2 upper limit
        {
            brightness = 0.2;
        }
        else if(brightness < 0.0) //set 0.0 lower limit
        {
            brightness = 0.0;
        }
        else
        {
            if(c == 'u')
            {
                brightness = brightness + 0.0001; //brightness increase
            }
            if(c == 'd')
            {
                brightness = brightness - 0.0001; //brightness decrease
            }
        }
        
        ledPwm(brightness);
        
        
    }*/
    
    //Task 5, speaker test
    /*while(1)
    {
        for(float i= 2000.0; i<10000.0; i+=100)
        {
            spkr.period(1.0/i); //frequency sweep from 2Khz to 10KHz, period=1/f 
            spkr = 0.5; //50% duty cycle
            wait(0.1);
        }
        
        spkr = 0.0; //nute speaker
        while(!fire){}
    }*/
    
    //task5, speaker orange song
    /*while(1)
    {
        for(int i=0; i<= 11; i++)
        {
            spkr.period(1.0/frequency[i]); //variable frequency dewpending on song notes
            spkr = 0.5; //50% duty cycle
            wait(0.5*beat[i]); //hold for beat period
        }
        
        spkr = 0.0; //mute speaker
        while(!fire){}
    }*/
    
    
    while(1)
    {
        for(int i=0; i<length; i++)
        {
            spkr.period(1.0/frequency[i]); //convert frequency to time and use it as period
            spkr = 0.5; //50% duty cycle
            wait(0.5*beat[i]*0.02); //0.02 is used to adjust the speed of the music
        }
        
        spkr = 0.0; //mute the speaker
        while(!fire){}
    }
    
    //return 0;
    
    
}

/*void ledPwm(float brightness) //for the led online adjusting
{
    led.period(0.001); //100Hz=T
    led = brightness;
}*/

/*void basicPWM() //for the PWM online adjusting 
{
    //create a PWM signal to see on the osciloscope (Pulse = 100Hz and DT= 50%
    PWM1.period(getFloat()); //set the PWM period to 10ms, used to configure period remotel as well
    PWM1 = getFloat(); //set the duty cycle to 50% (from 0.0 to 1.0 0% to 100%)
}*/

float getFloat()
{
    float num;
    pc.scanf("%f", &num);
    return (num);
}

char getChar()
{
    char c;
    pc.getc();
    return c;
}