SensorShieldLib

Easily watch and communicate sensors value in JSON.

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Example:

#include <sensorShieldLib.h>

SensorShield board;

void setup() {
	board.init(); // initialises and starts Serial

	board.addSensor("btn1", 2);
	board.addSensor("btn2", 8, INPUT_PULLUP);
	board.addSensor("pot1", A0);
}

void loop() {
	board.update();
}

On board.update();, the lib checks sensors values and if any changed from previous loop, outputs JSON on Serial 9600 bds: {"btn1":1,"btn2":0,"pot1":768}

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Features

• A SensorShield class:

SensorShield board;

• Simple initialisation:

board.init();

• Support initialisation with different Stream:

Serial.begin(115200);
board.init(Serial);

• Set your digital/analog pins ranges ( lib is configured by default for UNO ):

board.setDigitalPinsRange(2, 53);
board.setAnalogPinsRange(A0, A15);

• Easy sensor attach with auto recognition for analog/digital read:

board.addSensor("btn1", 2);
board.addSensor("pot1", A0);

• Support INPUT_PULLUP pinMode for digital sensors:

board.addSensor("btn2", 8, INPUT_PULLUP);

• Use an int or float function as a sensor:

int secondsPassed() {
	return millis() / 1000 ;
}
//...
board.addSensor("seconds", secondsPassed);

• Link a function with a sensor to compute its value instead of only reading its pin:

float multBy2(int value) {
	return value * 2;
}
//...
board.addSensor("pot1", A0);
board.setSensorProcess("pot1", multBy2);

• Set minimun change needed on sensor value before updating its value and sending JSON:

board.setSensorSensitivity("pot1", 10);

• Send JSON on each loop by setting sensitivity to 0:

board.setSensorSensitivity(0);

• Set limit values of interest for a particular sensor:

board.setSensorLimits("pot1", 150, 850);

• Possibility to add a visual signal when sending JSON with a led ...:

board.emitLightOnChange(13);

• ... And to turn it on/off if desired:

board.emitLightOnChange(false);

• Reads all digital/analog sensors on update and automatically send JSON on changes:

void loop() {
	board.update();
}

• Public access to boolean hasNewValue:

if(board.hasNewValue == true) { ...... }

• Public access to String JSONMessage:

String s = board.JSONMessage;