110 lines
5.2 KiB
C++
110 lines
5.2 KiB
C++
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/*********************************************************************************
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* MIT License
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*
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* Copyright (c) 2020-2022 Gregg E. Berman
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*
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* https://github.com/HomeSpan/HomeSpan
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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********************************************************************************/
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////////////////////////////////////////////////////////////
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// //
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// HomeSpan: A HomeKit implementation for the ESP32 //
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// ------------------------------------------------ //
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// //
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// This sketch is for a Remote Temperature Sensor to //
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// be used in conjunction with the "MainDevice.ino" //
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// sketch running on a separate ESP32 //
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// //
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// The purpose of these sketches is to demonstrate //
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// how to use SpanPoint() to communication between //
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// a remote ESP32 device that takes measurements from //
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// a sensor, and a separate "main" ESP32 device that //
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// is running the full HomeSpan code, and thus //
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// connects to HomeKit. //
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// //
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// This sketch implements an Adafruit ADT7410 I2C //
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// Temperature Sensor. If you don't have such a //
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// device, please use the sketch "RemoteDevice.ino" //
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// instead. That sketch SIMULATES a temperature //
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// sensor and therefore allows you to learn how //
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// SpanPoint() works even though the temperature data //
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// itself isn't real. //
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// //
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////////////////////////////////////////////////////////////
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#include "HomeSpan.h"
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#include <Wire.h> // include the I2C library
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#define DIAGNOSTIC_MODE
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#define SAMPLE_TIME 30000 // Time between temperature samples (in milliseconds)
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#define I2C_ADD 0x48 // I2C Address to use for the Adafruit ADT7410
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SpanPoint *mainDevice;
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void setup() {
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setCpuFrequencyMhz(80); // reduce CPU frequency to save battery power
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#if defined(DIAGNOSTIC_MODE)
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homeSpan.setLogLevel(1);
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Serial.begin(115200);
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delay(1000);
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Serial.printf("Starting Remote Temperature Sensor. MAC Address of this device = %s\n",WiFi.macAddress().c_str());
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#endif
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// In the line below, replace the MAC Address with that of your MAIN HOMESPAN DEVICE
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mainDevice=new SpanPoint("7C:DF:A1:61:E4:A8",sizeof(float),0); // create a SpanPoint with send size=sizeof(float) and receive size=0
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Wire.begin(); // start I2C in Controller Mode
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#if defined(DIAGNOSTIC_MODE)
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Wire.beginTransmission(I2C_ADD); // setup transmission
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Wire.write(0x0B); // ADT7410 Identification Register
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Wire.endTransmission(0); // transmit and leave in restart mode to allow reading
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Wire.requestFrom(I2C_ADD,1); // request read of single byte
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uint8_t id = Wire.read(); // receive a byte
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LOG1("Configuring Temperature Sensor ADT7410 version 0x%02X with address 0x%02X.\n",id,I2C_ADD); // initialization message
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#endif
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Wire.beginTransmission(I2C_ADD); // setup transmission
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Wire.write(0x03); // ADT740 Configuration Register
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Wire.write(0xC0); // set 16-bit temperature resolution, 1 sample per second
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Wire.endTransmission(); // transmit
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Wire.beginTransmission(I2C_ADD); // setup transmission
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Wire.write(0x00); // ADT7410 2-byte Temperature
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Wire.endTransmission(0); // transmit and leave in restart mode to allow reading
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Wire.requestFrom(I2C_ADD,2); // request read of two bytes
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int16_t iTemp = ((int16_t)Wire.read()<<8)+Wire.read();
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float temperature = iTemp/128.0;
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boolean success = mainDevice->send(&temperature); // send temperature to main device
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LOG1("Send temp update of %0.2f F: %s\n",temperature*9/5+32,success?"Succeded":"Failed");
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esp_deep_sleep(SAMPLE_TIME*1000); // enter deep sleep mode -- reboot after resuming
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}
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