Exercice : Code source ARDUINO à comprendre
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int etat;
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int oldEtatBP;
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const int WAIT = 0;
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const int START = 1;
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const int STOP = 2;
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const int pinBP = 3;
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const int pinLEDR = 4;
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const int pinLEDV = 5;
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void setup() {
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pinMode(pinBP, INPUT);
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pinMode(pinLEDR, OUTPUT);
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pinMode(pinLEDV, OUTPUT);
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etat = WAIT;
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oldEtatBP = LOW;
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digitalWrite(pinLEDR, LOW);
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digitalWrite(pinLEDV, LOW);
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}
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void loop() {
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int etatBP = digitalRead(pinBP);
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if (oldEtatBP == LOW && etatBP == HIGH) {
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if (etat == WAIT || etat == STOP) {
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etat = START;
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digitalWrite(pinLEDV, HIGH);
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digitalWrite(pinLEDR, LOW);
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}
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else {29
etat = STOP;
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digitalWrite(pinLEDV, LOW);
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digitalWrite(pinLEDR, HIGH);
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}
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}
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oldEtatBP = etatBP;
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delay(200);
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}
int etat;
int oldEtatBP;
const int WAIT = 0;
const int START = 1;
const int STOP = 2;
const int pinBP = 3;
const int pinLEDR = 4;
const int pinLEDV = 5;
void setup() {
pinMode(pinBP, INPUT);
pinMode(pinLEDR, OUTPUT);
pinMode(pinLEDV, OUTPUT);
etat = WAIT;
oldEtatBP = LOW;
digitalWrite(pinLEDR, LOW);
digitalWrite(pinLEDV, LOW);
}
void loop() {
int etatBP = digitalRead(pinBP);
if (oldEtatBP == LOW && etatBP == HIGH) {
if (etat == WAIT || etat == STOP) {
etat = START;
digitalWrite(pinLEDV, HIGH);
digitalWrite(pinLEDR, LOW);
}
else {
etat = STOP;
digitalWrite(pinLEDV, LOW);
digitalWrite(pinLEDR, HIGH);
}
}
oldEtatBP = etatBP;
delay(200);
}Le code source ci-dessus :