#include <stdio.h>
#include <avr/ina90.h>
#include <avr/iom103.h>
#include <math.h>

float foo(float SP);


main() {
	float setpoint=0.0;

	while(1) setpoint=foo(setpoint);
}

float foo(float SP) {
	if (SP>255) {
		SP=0;
	}
	else {
		SP=SP+1.0;
	}
	return SP;
}