#include "mbed.h"

AnalogIn ain(p20);
DigitalOut led(p21);

int main()
{
	float val;
	while (1)
	{
		val = ain;
		if(ain < 0.2)
		{
			led = 1;
		} else
		{
			led = 0;
		}

		printf("%f\n",val);
		wait(0.1);
	}
}