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- int pbVal = 0;
- int pbPin;
- #define ledPin 13
- void setup() {
- Serial.begin(9600);
- Serial.println("Test Push Button");
- Serial.println("================");
- Serial.println();
- Serial.println("Connecting guidelines:");
- Serial.println("Place the PB above the mid rail of the breadboard");
- Serial.println("in way that two legs are on one side of the rail");
- Serial.println("and the other two legs are on the other side");
- Serial.println();
- Serial.println("One leg is connected to 5V");
- Serial.println("the opposite leg is connected to digital pin, and");
- Serial.println("to a 10K Ohm resistor that goes to GND");
- Serial.println("This is PULL DOWN connection");
- Serial.println();
- Serial.println();
- Serial.println("The program reads the state of the button (pressed or released)");
- Serial.println("and prints the state to screen and controlls the on board led");
- pinMode(ledPin, OUTPUT);
- Serial.println();
- Serial.println();
- Serial.println("Enter the pin number that the PB is connected to:");
- while (Serial.available() == 0);
- pbPin = Serial.parseInt();
- while (pbPin < 2 || pbPin > 13) {
- Serial.println("Pin number " + String(pbPin) + " is invalid.");
- Serial.println("Check your connection and/or eneterd data");
- Serial.println();
- Serial.println("Enter the pin number that the PB is connected to:");
- Serial.println();
- while (Serial.available() == 0);
- pbPin = Serial.parseInt();
- }
- pinMode(pbPin, INPUT);
- }
- void loop() {
- pbVal = digitalRead(pbPin);
- Serial.println("PB state is:" + String((pbVal ? "HIGH" : "LOW")) );
- digitalWrite(ledPin, pbVal);
- delay(1000);
- }
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