Arduino - Afficheur 4 Digit 7 Segment (FR)

/**** Code ****/
// 5461AS
int time = 5;

int pinA = 9;
int pinB = 8;
int pinC = 7;
int pinD = 6;
int pinE = 5;
int pinF = 4;
int pinG = 3;
int pinDP = 2;

int DIG1 = 13;
int DIG2 = 12;
int DIG3 = 11;
int DIG4 = 10;

void choose_digit(char num) {
switch(num) {
default:
// 0 default value
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, LOW);
digitalWrite(pinDP,LOW);
break;

case 1:
digitalWrite(pinA, LOW);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, LOW);
digitalWrite(pinDP,LOW);
break;

case 2:
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, LOW);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, LOW);
digitalWrite(pinG, HIGH);
digitalWrite(pinDP, LOW);
break;

case 3:
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, HIGH);
digitalWrite(pinDP, LOW);
break;

case 4:
digitalWrite(pinA, LOW);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
digitalWrite(pinDP, LOW);
break;

case 5:
digitalWrite(pinA, HIGH);
digitalWrite(pinB, LOW);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
digitalWrite(pinDP, LOW);
break;

case 6:
digitalWrite(pinA, HIGH);
digitalWrite(pinB, LOW);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
digitalWrite(pinDP, LOW);
break;

case 7:
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, LOW);
digitalWrite(pinDP, LOW);
break;

case 8:
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
digitalWrite(pinDP, LOW);
break;

case 9:
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
digitalWrite(pinDP, LOW);
break;

}

}

void pick_digit(int digit) {
digitalWrite(DIG1, HIGH);
digitalWrite(DIG2, HIGH);
digitalWrite(DIG3, HIGH);
digitalWrite(DIG4, HIGH);

switch(digit) {
case 1: digitalWrite(DIG1, LOW); break;
case 2: digitalWrite(DIG2, LOW); break;
case 3: digitalWrite(DIG3, LOW); break;
default:digitalWrite(DIG4, LOW); break;
}

}

void decimal_place() {
digitalWrite(pinDP, HIGH);
}

void seven_segment(int number) {

unsigned char thousands = int (number/1000);
unsigned char hundreds = int ((number/100)%10);
unsigned char tens = int ((number/10)%10);
unsigned char ones = int (number%10);

//1234
choose_digit(thousands);
pick_digit(1);
delay(time);

choose_digit(hundreds);
pick_digit(2);
delay(time);

choose_digit(tens);
pick_digit(3);
decimal_place(); // add decimal point
delay(time);

choose_digit(ones);
pick_digit(4);
delay(time);

}

void setup() {

pinMode(DIG1, OUTPUT);
pinMode(DIG2, OUTPUT);
pinMode(DIG3, OUTPUT);
pinMode(DIG4, OUTPUT);

pinMode(pinA, OUTPUT);
pinMode(pinB, OUTPUT);
pinMode(pinC, OUTPUT);
pinMode(pinD, OUTPUT);
pinMode(pinE, OUTPUT);
pinMode(pinF, OUTPUT);
pinMode(pinG, OUTPUT);
pinMode(pinDP,OUTPUT);

Serial.begin(9600);

}

void loop() {

int sensor_value = analogRead(A0);
Serial.println(sensor_value);

seven_segment(sensor_value);
delay(1);

}