Hallo
Habe einen UP Down Counter mit Debounce, mein Problem ist, das zählen über die 2 Taster funktioniert nicht.
Die einzelen Segmente springen unkontrolliert hin und her.
Habe ich im Code einen Fehler?
Hier ist der gesamte Code

#define BUTTON_DOWN 10
#define BUTTON_UP 12

int ledPinA = 2; // LED connected to digital pin 3
int ledPinB = 3; // LED connected to digital pin 4
int ledPinC = 4; // LED connected to digital pin 5
int ledPinD = 5; // LED connected to digital pin 6
int ledPinE = 6; // LED connected to digital pin 7
int ledPinF = 7; // LED connected to digital pin 8
int ledPinG = 8; // LED connected to digital pin 9
int ledPinDP = 9; // LED connected to digital pin 10

int val_down = HIGH;
int old_val_down = LOW;
int val_up = HIGH;
int old_val_up = LOW;
int state = LOW;
int gear = 1;

void setup() {
pinMode(BUTTON_DOWN, INPUT);
pinMode(BUTTON_UP, INPUT);

pinMode(ledPinA, OUTPUT);
pinMode(ledPinB, OUTPUT);
pinMode(ledPinC, OUTPUT);
pinMode(ledPinD, OUTPUT);
pinMode(ledPinE, OUTPUT);
pinMode(ledPinF, OUTPUT);
pinMode(ledPinG, OUTPUT);
pinMode(ledPinDP, OUTPUT);

Serial.begin(9600);
}

void led0()
{
digitalWrite(ledPinA, LOW);
digitalWrite(ledPinB, LOW);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, LOW);
digitalWrite(ledPinE, LOW);
digitalWrite(ledPinF, LOW);
digitalWrite(ledPinG, HIGH);
digitalWrite(ledPinDP, HIGH);
}

void led1()
{
digitalWrite(ledPinA, HIGH);
digitalWrite(ledPinB, LOW);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, HIGH);
digitalWrite(ledPinE, HIGH);
digitalWrite(ledPinF, HIGH);
digitalWrite(ledPinG, HIGH);
digitalWrite(ledPinDP, HIGH);
}

void led2()
{
digitalWrite(ledPinA, LOW);
digitalWrite(ledPinB, LOW);
digitalWrite(ledPinC, HIGH);
digitalWrite(ledPinD, LOW);
digitalWrite(ledPinE, LOW);
digitalWrite(ledPinF, HIGH);
digitalWrite(ledPinG, LOW);
digitalWrite(ledPinDP, HIGH);
}

void led3()
{
digitalWrite(ledPinA, LOW);
digitalWrite(ledPinB, LOW);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, LOW);
digitalWrite(ledPinE, HIGH);
digitalWrite(ledPinF, HIGH);
digitalWrite(ledPinG, LOW);
digitalWrite(ledPinDP, HIGH);
}

void led4()
{
digitalWrite(ledPinA, HIGH);
digitalWrite(ledPinB, LOW);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, HIGH);
digitalWrite(ledPinE, HIGH);
digitalWrite(ledPinF, LOW);
digitalWrite(ledPinG, LOW);
digitalWrite(ledPinDP, HIGH);
}

void led5()
{
digitalWrite(ledPinA, LOW);
digitalWrite(ledPinB, HIGH);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, LOW);
digitalWrite(ledPinE, HIGH);
digitalWrite(ledPinF, LOW);
digitalWrite(ledPinG, LOW);
digitalWrite(ledPinDP, HIGH);
}

void led6()
{
digitalWrite(ledPinA, LOW);
digitalWrite(ledPinB, HIGH);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, LOW);
digitalWrite(ledPinE, LOW);
digitalWrite(ledPinF, LOW);
digitalWrite(ledPinG, LOW);
digitalWrite(ledPinDP, HIGH);
}

void led7()
{
digitalWrite(ledPinA, LOW);
digitalWrite(ledPinB, LOW);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, HIGH);
digitalWrite(ledPinE, HIGH);
digitalWrite(ledPinF, HIGH);
digitalWrite(ledPinG, HIGH);
digitalWrite(ledPinDP, HIGH);
}

void led8()
{
digitalWrite(ledPinA, LOW);
digitalWrite(ledPinB, LOW);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, LOW);
digitalWrite(ledPinE, LOW);
digitalWrite(ledPinF, LOW);
digitalWrite(ledPinG, LOW);
digitalWrite(ledPinDP, HIGH);
}

void led9()
{
digitalWrite(ledPinA, LOW);
digitalWrite(ledPinB, LOW);
digitalWrite(ledPinC, LOW);
digitalWrite(ledPinD, LOW);
digitalWrite(ledPinE, HIGH);
digitalWrite(ledPinF, LOW);
digitalWrite(ledPinG, LOW);
digitalWrite(ledPinDP, HIGH);
}

void ledDP()
{
digitalWrite(ledPinA, HIGH);
digitalWrite(ledPinB, HIGH);
digitalWrite(ledPinC, HIGH);
digitalWrite(ledPinD, HIGH);
digitalWrite(ledPinE, HIGH);
digitalWrite(ledPinF, HIGH);
digitalWrite(ledPinG, HIGH);
digitalWrite(ledPinDP, LOW);
}

void setLed(int number)
{
switch (number) {
case 0:
ledDP();
break;
case 1:
led1();
break;
case 2:
led2();
break;
case 3:
led3();
break;
case 4:
led4();
break;
case 5:
led5();
break;
case 6:
led6();
break;
case 7:
led7();
break;
case 8:
led8();
break;
case 9:
led9();
break;
}
}

void oldloop()
{
ledDP();
delay(1000); // wait for a second
led0();
delay(1000); // wait for a second
led1();
delay(1000); // wait for a second
led2();
delay(1000); // wait for a second
led3();
delay(1000); // wait for a second
led4();
delay(1000); // wait for a second
led5();
delay(1000); // wait for a second
led6();
delay(1000); // wait for a second
led7();
delay(1000); // wait for a second
led8();
delay(1000); // wait for a second
led9();
delay(1000); // wait for a second
}

void loop()
{
val_up = digitalRead(BUTTON_UP);
if ((val_up == HIGH) && (old_val_up == LOW)) {
gear += 1;
Serial.print("gear number: ");
Serial.println(gear, DEC);
delay(100);
}
old_val_up = val_up;

val_down = digitalRead(BUTTON_DOWN);
if ((val_down == HIGH) && (old_val_down == LOW)) {
gear -= 1;
Serial.print("gear number: ");
Serial.println(gear, DEC);
delay(100);
}
old_val_down = val_down;

if (gear >= 6) {
gear = 6;
}
if (gear <= 1) {
gear = 1;
}

setLed(gear);
}