#include "mbed.h"

Serial pc(USBTX, USBRX);
PwmOut led(LED1);

float brightness = 0.0;


int main()
{
    pc.printf("Press 'u' to turn LED1 brightness up, 'd' to turn it down\n");
    while(1)
    {
        if(pc.readable())
        {
            char c = pc.getc();
            char extra[10];
            char count = 0;
            while(pc.readable())
            {
                if(count < 10)
                extra[count++] = pc.getc();
            }
            
            
            if( (c == 'u') && (brightness < 0.5))
            {
                brightness += 0.01;
                led = brightness;
            }
            else if( (c == 'd') && (brightness > 0.0))
            {
                brightness -= 0.01;
                led = brightness;   
            }
            if(pc.writeable())
            {     
                pc.printf("c = %c\n", c);
                pc.printf("brightness = %f, count = %d\n", brightness,count);
                for(int i = 0; i < count; ++i)
                    pc.printf("extra[%d] = 0x%d\n",i, extra[i]);
            }
               
        }
        
       
    }
}