File content as of revision 4:651d06e860e7:

#include "mbed.h"
#include "MODSERIAL.h"

Ticker Blinker;

DigitalOut ledr(LED_RED);
DigitalOut ledg(LED_GREEN);
DigitalOut ledb(LED_BLUE);

InterruptIn  sw2(SW2);
InterruptIn  sw3(SW3);

MODSERIAL pc(USBTX, USBRX);

volatile char c;
volatile char  color;

void Buttonpress()
{    
    if (c == 'r')
    {
        color = 'r';
    }
    else if (c == 'g')
    {
        color = 'g';        
    }
    else if (c == 'b')
    {
        color = 'b';
    }
    else if (c == NULL)
    {
        ledr = 1;
        ledg = 1;
        ledb = 1;
    }
    else
    {
        pc.printf("Character %c is not valid \r\n",c);
        c = color;
        
        ledr = 0;
        ledg = 0;
        ledb = 0;
        wait(0.1f);
        ledr = 1;
        ledg = 1;
        ledb = 1;
        wait(0.1f);
        ledr = 0;
        ledg = 0;
        ledb = 0;
        wait(0.1f);
        ledr = 1;
        ledg = 1;
        ledb = 1;
        wait(0.1f);
        ledr = 0;
        ledg = 0;
        ledb = 0;
        wait(0.1f);
        ledr = 1;
        ledg = 1;
        ledb = 1;
        wait(0.1f);        
    }     
    
    if (color == 'r')
    {
        ledr = !ledr;
        ledg = 1;
        ledb = 1;
    }
    else if (color == 'g')
    {
        ledr = 1;
        ledg = !ledg;
        ledb = 1;
    }
    else if (color == 'b')
    {
        ledr = 1;
        ledg = 1;
        ledb = !ledb;
    }
    
    wait(0.25f);
    ledr = 1;
    ledg = 1;
    ledb = 1;
       
}

void CurrentColor()
{
    if (color == 'r')
    {
        pc.printf("The current blinking color is: red. \r\n");
    }
    else if (color == 'g')
    {
        pc.printf("The current blinking color is: green. \r\n");
    }
    else if (color == 'b')
    {
        pc.printf("The current blinking color is: blue. \r\n");
    }
    else
    {
        pc.printf("The LED is currently not blinking.\r\n");
    }
}

void LEDOFF()
{
    color = NULL;
    c = NULL;
    
    ledr = 1;
    ledg = 1;
    ledb = 1;
}

int main()
{
    ledr = 1;
    ledg = 1;
    ledb = 1;
    
    pc.printf("\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n ~~~A$$De$troyer69~~~ \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n");
    
    pc.baud(115200);
    Blinker.attach(Buttonpress, 0.5);
    sw2.fall(CurrentColor);
    sw3.rise(LEDOFF);
    
    
    while (true)
    {
        c = pc.getc();
        
    }
    
}