Errore nel programma del robot Arduino

Codice:


int ENA = 9;
int IN1 = 10;
int IN2 = 8;
 
int ENB = 6;
int IN3 = 13;
int IN4 = 7;
 
void setup ()
{
pinMode (ENA, OUTPUT);
pinMode (IN1, OUTPUT);
pinMode (IN2, OUTPUT);
pinMode (ENB, OUTPUT);
pinMode (IN3, OUTPUT);
pinMode (IN4, OUTPUT);
}
void ferma ()
{
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
analogWrite(ENA, 0);
analogWrite(ENB, 0);
delay(2000);
}
 
void avanti ()
{
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
analogWrite(ENA, 200);
analogWrite(ENB, 200);
delay(5000);
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
analogWrite(ENA, 0);
analogWrite(ENB, 0);
}
 
void indietro ()
{
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
analogWrite(ENA, 200);
analogWrite(ENB, 200);
delay(3000);
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
analogWrite(ENA, 0);
analogWrite(ENB, 0);
}
void test_motor_1 ()
{
for (int i = 0; i < 256; i++)
{
digitalWrite (IN1, HIGH);
digitalWrite (IN2, LOW);
analogWrite (ENA, i);
delay (50);
}
 
delay (3000);
digitalWrite (IN1, LOW);
digitalWrite (IN2, LOW);
 
for (int i = 0; i < 256; i++)
{
digitalWrite (IN1, LOW);
digitalWrite (IN2, HIGH);
analogWrite (ENA, i);
delay (50);
}
 
delay (3000);
digitalWrite (IN2, LOW);
}
 
void test_motor_2 ()
{
for (int i = 0; i < 256; i++)
{
digitalWrite (IN3, HIGH);
digitalWrite (IN4, LOW);
analogWrite (ENB, i);
delay (50);
}
 
delay (3000);
digitalWrite (IN3, LOW);
for (int i = 0; i < 256; i++)
{
digitalWrite (IN3, LOW);
digitalWrite (IN4, HIGH);
analogWrite (ENB, i);
delay (50);
}
delay (3000);
digitalWrite (IN4, LOW);
}
 
void loop()
{
avanti();
ferma();
indietro();
ferma();
}


Arduino compilatore ha scritto:Lo sketch usa 1.842 byte (5%) dello spazio disponibile per i programmi. Il massimo è 32.256 byte.
Le variabili globali usano 21 byte (1%) di memoria dinamica, lasciando altri 2.027 byte liberi per le variabili locali. Il massimo è 2.048 byte.