layout: page

title: "MySensors HVAC"

description: "Instructions how to integrate MySensors climate into Home Assistant."

date: 2016-09-14 18:20 +0100

sidebar: true

comments: false

sharing: true

footer: true

logo: mysensors.png

ha_category: Light

featured: false

ha_release: 0.28+

Integrates MySensors HVAC into Home Assistant. See the [main component] for configuration instructions.

The following actuator types are supported:

S_TYPE | V_TYPE

------------|-------------

S_HVAC | [V_HVAC_SETPOINT_HEAT, V_HVAC_SETPOINT_COLD, V_HVAC_FLOW_STATE, V_HVAC_FLOW_MODE, V_HVAC_SPEED]

For more information, visit the [serial api] of MySensors.

#include <MySensor.h>

#include <SPI.h>

#define SN "DimmableRGBLED"

#define SV "1.0"

#define CHILD_ID 1

#define LED_PIN 5

MySensor gw;

char rgb[7] = "ffffff"; // RGB value.

int currentLevel = 0; // Current dimmer level.

MyMessage dimmerMsg(CHILD_ID, V_PERCENTAGE);

MyMessage lightMsg(CHILD_ID, V_STATUS);

MyMessage rgbMsg(CHILD_ID, V_RGB);

void setup()

{

gw.begin(incomingMessage);

gw.sendSketchInfo(SN, SV);

gw.present(CHILD_ID, S_RGB_LIGHT);

// Send initial values.

gw.send(lightMsg.set(currentLevel > 0 ? 1 : 0));

gw.send(dimmerMsg.set(currentLevel));

gw.send(rgbMsg.set(rgb));

}

void loop()

{

gw.process();

}

void incomingMessage(const MyMessage &message) {

if (message.type == V_RGB) {

// Retrieve the RGB value from the incoming message.

// RGB LED not implemented, just a dummy print.

String hexstring = message.getString();

hexstring.toCharArray(rgb, sizeof(rgb));

Serial.print("Changing color to ");

Serial.println(rgb);

gw.send(rgbMsg.set(rgb));

}

if (message.type == V_STATUS || message.type == V_PERCENTAGE) {

// Retrieve the light status or dimmer level from the incoming message.

int requestedLevel = atoi(message.data);

// Adjust incoming level if this is a V_LIGHT update [0 == off, 1 == on].

requestedLevel *= (message.type == V_STATUS ? 100 : 1);

// Clip incoming level to valid range of 0 to 100

requestedLevel = requestedLevel > 100 ? 100 : requestedLevel;

requestedLevel = requestedLevel < 0 ? 0 : requestedLevel;

// Change level value of LED pin.

analogWrite(LED_PIN, (int)(requestedLevel / 100. * 255));

currentLevel = requestedLevel;

// Update the gateway with the current V_STATUS and V_PERCENTAGE.

gw.send(lightMsg.set(currentLevel > 0 ? 1 : 0));

gw.send(dimmerMsg.set(currentLevel));

}

}