mirror of
https://github.com/1technophile/OpenMQTTGateway.git
synced 2026-03-03 05:54:23 +01:00
eb5b8fa291
Add semaphore to the enqueue calls to avoid concurrency issues Add new BT controller to avoid scan evt timeout bug
102 lines
3.4 KiB
C++
102 lines
3.4 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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INA226 reading Addon
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From the orgiginal work of Matthias Busse http://shelvin.de/ein-batteriemonitor-fuer-strom-und-spannung-mit-dem-ina226-und-dem-arduino-uno/
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MQTT add - 1technophile
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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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// Pinout
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// INA226 - Uno - Mega - NODEMCU
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// SCL - A5 - 21 - D1
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// SDA - A4 - 20 - D2
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//
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#include "User_config.h"
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#ifdef ZsensorINA226
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# include <Wire.h>
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float rShunt = 0.1; // Shunt Widerstand festlegen, hier 0.1 Ohm
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const int INA226_ADDR = 0x40; // A0 und A1 auf GND > Adresse 40 Hex auf Seite 18 im Datenblatt
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//Time used to wait for an interval before resending temp and hum
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unsigned long timeINA226 = 0;
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void setupINA226() {
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Wire.begin();
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// Configuration Register Standard Einstellung 0x4127, hier aber 16 Werte Mitteln > 0x4427
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writeRegister(0x00, 0x4427); // 1.1ms Volt und Strom A/D-Wandlung, Shunt und VBus continous
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}
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void MeasureINA226() {
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if (millis() > (timeINA226 + TimeBetweenReadingINA226)) { //retrieving value of temperature and humidity of the box from DHT every xUL
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timeINA226 = millis();
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Log.trace(F("Creating INA226 buffer" CR));
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StaticJsonDocument<JSON_MSG_BUFFER> INA226dataBuffer;
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JsonObject INA226data = INA226dataBuffer.to<JsonObject>();
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// Topic on which we will send data
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Log.trace(F("Retrieving electrical data" CR));
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// Bus Spannung, read-only, 16Bit, 0...40.96V max., LSB 1.25mV
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float volt = readRegister(0x02) * 0.00125;
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// Seite 24: Shunt Spannung +- 81,92mV mit 16 Bit, LSB 2,5uV
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int shuntvolt = readRegister(0x01);
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if (shuntvolt && 0x8000) { // eine negative Zahl? Dann 2er Komplement bilden
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shuntvolt = ~shuntvolt; // alle Bits invertieren
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shuntvolt += 1; // 1 dazuzählen
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shuntvolt *= -1; // negativ machen
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}
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float current = shuntvolt * 0.0000025 / rShunt; // * LSB / R
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float power = abs(volt * current);
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INA226data["volt"] = volt;
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INA226data["current"] = current;
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INA226data["power"] = power;
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INA226data["origin"] = subjectINA226toMQTT;
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handleJsonEnqueue(INA226data);
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}
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}
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static void writeRegister(byte reg, word value) {
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Wire.beginTransmission(INA226_ADDR);
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Wire.write(reg);
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Wire.write((value >> 8) & 0xFF);
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Wire.write(value & 0xFF);
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Wire.endTransmission();
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}
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static word readRegister(byte reg) {
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word res = 0x0000;
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Wire.beginTransmission(INA226_ADDR);
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Wire.write(reg);
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if (Wire.endTransmission() == 0) {
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if (Wire.requestFrom(INA226_ADDR, 2) >= 2) {
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res = Wire.read() * 256;
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res += Wire.read();
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}
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}
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return res;
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}
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#endif
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