Если у вас есть проблемы с металлическими стенами в вашем доме, что делает радио-передачу невозможной, вы можете создать проводную сеть MySensors с использованием модулей RS-485, подключенных к вашему Arduino.
Мы используем библиотеку AltSoftSerial (внутренне), чтобы Arduino использовал дополнительный последовательный порт. Таким образом, вы можете использовать pin0/1 для отладочных сообщений узла.
Библиотека AltSoftSerial может одновременно передавать и принимать. Минимальное вмешательство в одновременное использование HardwareSerial и других библиотек. Использует 16-разрядный таймер (он не будет работать с другими библиотеками, которым нужен этот таймер) и отключает некоторые выводы PWM. Может быть чувствительным к прерываниям использующимися в других библиотеках.
Подключение
Плата | Передающий вывод | Принимающий вывод | Отключаемый PWM |
Arduino Uno, Duemilanove, LilyPad, Mini (& other ATMEGA328) | 9 | 8 | 10 |
Arduino Leonardo, Yun, Micro | 5 | 3 | — |
Arduino Mega | 46 | 48 | 44, 45 |
Teensy 3.0 / 3.1 / 3.2 | 21 | 20 | 22 |
Teensy 2.0 | 9 | 10 | — |
Teensy++ 2.0 | 25 | 4 | 26, 27 |
Также вы должны подключить выход DE-pin к контакту 2 (или другому, определенному MY_RS485_DE_PIN в вашем эскизе).
Демонстрация
Пример шлюза последовательного порта
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/** * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of the * network topology allowing messages to be routed to nodes. * * Created by Henrik Ekblad <henrik.ekblad@mysensors.org> * Copyright (C) 2013-2019 Sensnology AB * Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors * * Documentation: http://www.mysensors.org * Support Forum: http://forum.mysensors.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * ******************************* * * DESCRIPTION * The RS485 Gateway prints data received from sensors on the serial link. * The gateway accepts input on seral which will be sent out on * the RS485 link. * * Wire connections (OPTIONAL): * - Inclusion button should be connected between digital pin 3 and GND * - RX/TX/ERR leds need to be connected between +5V (anode) and digital pin 6/5/4 with resistor 270-330R in a series * * LEDs (OPTIONAL): * - RX (green) - blink fast on radio message received. In inclusion mode will blink fast only on presentation received * - TX (yellow) - blink fast on radio message transmitted. In inclusion mode will blink slowly * - ERR (red) - fast blink on error during transmission error or receive crc error * * If your Arduino board has additional serial ports * you can use to connect the RS485 module. * Otherwise, the gateway uses AltSoftSerial to handle two serial * links on one Arduino. Use the following pins for RS485 link * * Board Transmit Receive PWM Unusable * ----- -------- ------- ------------ * Teensy 3.0 & 3.1 21 20 22 * Teensy 2.0 9 10 (none) * Teensy++ 2.0 25 4 26, 27 * Arduino Uno 9 8 10 * Arduino Leonardo 5 13 (none) * Arduino Mega 46 48 44, 45 * Wiring-S 5 6 4 * Sanguino 13 14 12 * */ // Enable debug prints to serial monitor #define MY_DEBUG // Enable RS485 transport layer #define MY_RS485 // Define this to enables DE-pin management on defined pin #define MY_RS485_DE_PIN 2 // Set RS485 baud rate to use #define MY_RS485_BAUD_RATE 9600 // Enable this if RS485 is connected to a hardware serial port //#define MY_RS485_HWSERIAL Serial1 // Enable serial gateway #define MY_GATEWAY_SERIAL // Enable inclusion mode #define MY_INCLUSION_MODE_FEATURE // Enable Inclusion mode button on gateway #define MY_INCLUSION_BUTTON_FEATURE // Set inclusion mode duration (in seconds) #define MY_INCLUSION_MODE_DURATION 60 // Digital pin used for inclusion mode button #define MY_INCLUSION_MODE_BUTTON_PIN 3 // Set blinking period #define MY_DEFAULT_LED_BLINK_PERIOD 300 // Flash leds on rx/tx/err #define MY_DEFAULT_ERR_LED_PIN 4 // Error led pin #define MY_DEFAULT_RX_LED_PIN 5 // Receive led pin #define MY_DEFAULT_TX_LED_PIN 6 // the PCB, on board LED #include <MySensors.h> void setup() { // Setup locally attached sensors } void presentation() { // Present locally attached sensors } void loop() { // Send locally attached sensor data here } |
Пример датчика движения
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/* * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of the * network topology allowing messages to be routed to nodes. * * Created by Henrik Ekblad <henrik.ekblad@mysensors.org> * Copyright (C) 2013-2019 Sensnology AB * Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors * * Documentation: http://www.mysensors.org * Support Forum: http://forum.mysensors.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * ******************************* * * REVISION HISTORY * Version 1.0 - Henrik Ekblad * * DESCRIPTION * This is an example of sensors using RS485 as transport layer * * Motion Sensor example using HC-SR501 * http://www.mysensors.org/build/motion * * If your Arduino board has additional serial ports * you can use to connect the RS485 module. * Otherwise, the transport uses AltSoftSerial to handle two serial * links on one Arduino. Use the following pins for RS485 link * * Board Transmit Receive PWM Unusable * ----- -------- ------- ------------ * Teensy 3.0 & 3.1 21 20 22 * Teensy 2.0 9 10 (none) * Teensy++ 2.0 25 4 26, 27 * Arduino Uno 9 8 10 * Arduino Leonardo 5 13 (none) * Arduino Mega 46 48 44, 45 * Wiring-S 5 6 4 * Sanguino 13 14 12 * * */ // Enable debug prints to serial monitor #define MY_DEBUG // Enable RS485 transport layer #define MY_RS485 // Define this to enables DE-pin management on defined pin #define MY_RS485_DE_PIN 2 // Set RS485 baud rate to use #define MY_RS485_BAUD_RATE 9600 // Enable this if RS485 is connected to a hardware serial port //#define MY_RS485_HWSERIAL Serial1 #include <MySensors.h> uint32_t SLEEP_TIME = 120000; // Sleep time between reports (in milliseconds) #define DIGITAL_INPUT_SENSOR 3 // The digital input you attached your motion sensor. (Only 2 and 3 generates interrupt!) #define CHILD_ID 1 // Id of the sensor child // Initialize motion message MyMessage msg(CHILD_ID, V_TRIPPED); void setup() { pinMode(DIGITAL_INPUT_SENSOR, INPUT); // sets the motion sensor digital pin as input } void presentation() { // Send the sketch version information to the gateway and Controller sendSketchInfo("Motion Sensor", "1.0"); // Register all sensors to gw (they will be created as child devices) present(CHILD_ID, S_MOTION); } void loop() { // Read digital motion value bool tripped = digitalRead(DIGITAL_INPUT_SENSOR) == HIGH; Serial.println(tripped); send(msg.set(tripped?"1":"0")); // Send tripped value to gw // Sleep until interrupt comes in on motion sensor. Send update every two minute. sleep(digitalPinToInterrupt(DIGITAL_INPUT_SENSOR), CHANGE, SLEEP_TIME); } |