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83 lines
2.9 KiB
C++
83 lines
2.9 KiB
C++
/*
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OpenMQTTGateway Addon - ESP8266 or Arduino program for home automation
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Act as a wifi or ethernet gateway between your 433mhz/infrared IR signal and a MQTT broker
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Send and receiving command by MQTT
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GPIO Input derived from HC SR-501 reading Addon and https://www.arduino.cc/en/Tutorial/Debounce
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This reads a high (open) or low (closed) through a circuit (switch, float sensor, etc.) connected to ground.
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Copyright: (c)Florian ROBERT
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Contributors:
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- 1technophile
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- QuagmireMan
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This file is part of OpenMQTTGateway.
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OpenMQTTGateway is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenMQTTGateway is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "User_config.h"
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#ifdef ZsensorGPIOInput
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unsigned long lastDebounceTime = 0;
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int InputState = 3; // Set to 3 so that it reads on startup
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int lastInputState = 3;
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void setupGPIOInput() {
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Log.notice(F("Reading GPIO at pin: %d" CR), GPIOInput_PIN);
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pinMode(GPIOInput_PIN, INPUT_PULLUP); // declare GPIOInput pin as input_pullup to prevent floating. Pin will be high when not connected to ground
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}
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void MeasureGPIOInput() {
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int reading = digitalRead(GPIOInput_PIN);
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// check to see if you just pressed the button
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// (i.e. the input went from LOW to HIGH), and you've waited long enough
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// since the last press to ignore any noise:
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// If the switch changed, due to noise or pressing:
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if (reading != lastInputState) {
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// reset the debouncing timer
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lastDebounceTime = millis();
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}
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if ((millis() - lastDebounceTime) > GPIOInputDebounceDelay) {
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// whatever the reading is at, it's been there for longer than the debounce
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// delay, so take it as the actual current state:
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# if defined(ESP8266) || defined(ESP32)
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yield();
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# endif
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// if the Input state has changed:
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if (reading != InputState) {
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InputState = reading;
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Log.trace(F("Creating GPIOInput buffer" CR));
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const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(1);
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StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;
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JsonObject& GPIOdata = jsonBuffer.createObject();
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if (InputState == HIGH) {
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GPIOdata.set("gpio", "HIGH");
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}
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if (InputState == LOW) {
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GPIOdata.set("gpio", "LOW");
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}
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if (GPIOdata.size() > 0)
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pub(subjectGPIOInputtoMQTT, GPIOdata);
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}
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}
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// save the reading. Next time through the loop, it'll be the lastInputState:
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lastInputState = reading;
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}
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#endif
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