HOW TO READ A DIGITAL INPUT. ARDUINO IDE

HOW TO READ A DIGITAL INPUT. ARDUINO IDE

Before reading a digital input it is needed to set the pin as INPUT. See the following post to configure a pin.

The function for reading from a digital input using Arduino IDE is DigitalRead().  This function is used to read a digital signal (high or low).

 On Industrial Shields equipment’s is followed with the corresponding pinout. This functions are normally used inside the setup() function.

*With next version of Industrial Shields boards won’t be necessary to configure the pins, just selecting the properly board, I/O’s will be automatically configured. 

Next is showed the syntax:

DigitalRead(pin);

Pin: Could be any industrial shields equipment pin or any Arduino board pin that you wish to set. 

Code Example, reading from a digitalRead:

void setup() {

pinMode(I0_2,INPUT);
}

void loop() {

digitalRead(I0_2);

}

SEE ALSO: HOW TO USE THE MAPPING PINS OF INDUSTRIAL SHIELDS BOARDSHOW TO WRITE A DIGITAL OUTPUT. ARDUINO IDE

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