90 lines
2.8 KiB
Arduino
90 lines
2.8 KiB
Arduino
/*
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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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Analog GPIO reading Addon
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Copyright: (c)Florian ROBERT
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Contributors:
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- 1technophile
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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 ZsensorADC
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# if defined(ESP8266)
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ADC_MODE(ADC_TOUT);
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# endif
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//Time used to wait for an interval before resending adc value
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unsigned long timeadc = 0;
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void setupADC() {
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Log.notice(F("ADC_GPIO: %d" CR), ADC_GPIO);
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}
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void MeasureADC() {
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if (millis() > (timeadc + TimeBetweenReadingADC)) { //retrieving value of temperature and humidity of the box from DHT every xUL
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# if defined(ESP8266)
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yield();
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# endif
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timeadc = millis();
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static int persistedadc;
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int val = analogRead(ADC_GPIO);
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if (isnan(val)) {
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Log.error(F("Failed to read from ADC !" CR));
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} else {
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if (val >= persistedadc + ThresholdReadingADC || val <= persistedadc - ThresholdReadingADC) {
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Log.trace(F("Creating ADC buffer" CR));
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# if defined(ADC_DIVIDER)
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const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(2);
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# else
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const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(1);
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# endif
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StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;
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JsonObject& ADCdata = jsonBuffer.createObject();
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ADCdata.set("adc", (int)val);
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# if defined(ADC_DIVIDER)
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float volt = 0;
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# if defined(ESP32)
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// Convert the analog reading (which goes from 0 - 4095) to a voltage (0 - 3.3V):
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volt = val * (3.3 / 4096.0);
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# elif defined(ESP8266)
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// Convert the analog reading (which goes from 0 - 1024) to a voltage (0 - 3.3V):
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volt = val * (3.3 / 1024.0);
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# else
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// Asume 5V and 10bits ADC
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volt = val * (5.0 / 1024.0);
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# endif
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volt *= ADC_DIVIDER;
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// let's give 2 decimal point
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val = (volt * 100);
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volt = (float)val / 100.0;
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ADCdata.set("volt", (float)volt);
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# endif
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pub(ADCTOPIC, ADCdata);
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persistedadc = val;
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}
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}
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}
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}
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#endif
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