homey-rfdriver
v3.3.2
Published
Helper module for RF (433MHz, 868MHz, Infrared) apps for Homey
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Homey RFDriver
This module helps developers create RF (433MHz, 868MHz, Infrared) apps for Homey.
This module requires Homey Apps SDK v3.
Documentation
Documentation is available at https://athombv.github.io/node-homey-rfdriver/.
Related Modules
- node-homey-zwavedriver — Module for Z-Wave drivers
- node-homey-zigbeedriver — Module for Zigbee drivers
- node-homey-oauth2app — Module for OAuth2 apps
- node-homey-log — Module to log unhandled errors to Sentry
Installation
$ npm install homey-rfdriver
Requirements
- This module requires Homey Apps SDK v3.
- Your app needs permission for either
homey:wireless:433
orhomey:wireless:ir
.
Usage
Both your driver and device should extend RFDriver and RFDevice. RFDriver should then reference another class that extends RFSignal.
A typical app might have these files:
/.homeycompose/signals/433/my_signal.json
/lib/MySignal.js (extends RFSignal)
/drivers/my_driver/driver.js (extends RFDriver)
/drivers/my_driver/device.js (extends RFDevice)
/drivers/my_driver/pair/rf_receiver_learn.html
/drivers/my_driver/pair/rf_receiver_add.html
/drivers/my_driver/pair/image.svg
Your driver can be either a transmitter (e.g. a remote) or a receiver (e.g. a light or socket switch).
You should copy the corresponding files from this module's /pair
folder to your driver's /pair
folder.
RFSignal
Imagine we have a simple 433 MHz protocol that first sends the address (1 byte) and then the on/off state (1 byte, 0x00
for off, 0xFF
for on).
Our signal definition must be added to /.homeycompose/signals/433/my_signal.json
. Refer to the Signal Documentation for more information on how to create a signal.
Your JSON describes how to encode and decode the low & high signals into bits. The RFSignal you define here will parse these bits (or bytes) from and to JavaScript objects.
/lib/MySignal.js
'use strict';
const { RFSignal, RFError, RFUtil } = require('homey-rfdriver');
// Protocol:
// [ 0x00 - 0xFF, 0x00 | 0xFF ]
// [ address , state ]
module.exports = class MySignal extends RFSignal {
static FREQUENCY = '433';
static ID = 'my_signal';
// This method converts a JavaScript object command
// into a payload for our signal.
static commandToPayload({ address, state }) {
if( typeof address !== 'number' )
throw new RFError('Invalid Address');
if( typeof state !== 'boolean' )
throw new RFError('Invalid State');
return [ address, state ? 0x00 : 0xFF ];
}
// This method converts a received payload
// into a JavaScript object command.
static payloadToCommand(payload) {
const address = Number(payload[0]);
const state = Boolean(payload[1]);
return { address, state };
}
// This method takes a command object
// and returns a device-unique data object
static commandToDeviceData(command) {
return {
address: command.address,
};
}
// This method is invoked when a new receiver is added
// We can generate a random address, as if someone pressed
// the button on a remote.
static createPairCommand() {
return {
address: Math.round(Math.random() * 255),
state: true,
};
}
}
RFDriver
/drivers/my_driver/driver.js
const { RFDriver } = require('homey-rfdriver');
const MySignal = require('../../lib/MySignal');
module.exports = class MyDriver extends RFDriver {
static SIGNAL = MySignal;
}
Transmitter
Copy /pair/rf_transmitter_learn.html
to your driver's /pair
folder.
Then add this to your /drivers/<driver_id>/driver.compose.json
:
"rf433": { // Or `infrared`
"satelliteMode": true
},
"pair": [
{
"id": "rf_transmitter_learn",
"options": {
"title": {
"en": "Press any button"
},
"instruction": {
"en": "Press any button on your device."
}
}
}
]
Receiver
Copy /pair/rf_receiver_learn.html
and /pair/rf_receiver_add.html
to your driver's /pair
folder.
Then add this to your /drivers/<driver_id>/driver.compose.json
:
"pair": [
{
"id": "rf_receiver_learn",
"navigation": {
"next": "rf_receiver_add"
},
"options": {
"title": {
"en": "Press the button..."
},
"instruction": {
"en": "Press the button on your device once."
}
}
},
{
"id": "rf_receiver_add",
"options": {
"instruction": {
"en": "Did the device turn off and on?"
}
}
}
]
Receiver + Learn
Some devices, such as built-in modules, are hard to reach when pairing. For such devices, you can let the user choose whether to generate a new signal, or copy from an existing remote.
Follow the instructions for Receiver, but additionally copy /pair/rf_transmitter_learn.html
to your driver's /pair
folder.
Then, modify this to your /drivers/<driver_id>/driver.compose.json
:
"pair": [
{
"id": "rf_receiver_learn",
"navigation": {
"next": "rf_receiver_add"
},
"options": {
"title": {
"en": "Press the button..."
},
"instruction": {
"en": "Press the button on your device once."
},
"copyFromRemote": {
"en": "Copy from Remote"
}
}
},
{
"id": "rf_transmitter_learn",
"options": {
"instruction": {
"en": "Press any button on your remote."
}
},
"navigation": {
"prev": "rf_receiver_learn"
}
},
{
"id": "rf_receiver_add",
"navigation": {
"prev": "rf_receiver_learn"
},
"options": {
"instruction": {
"en": "Did the device turn off and on?"
}
}
}
]
IR Remote
Copy /pair/rf_ir_remote_learn.html
and /pair/rf_ir_remote_add
to your driver's /pair
folder.
Then add this to your /drivers/<driver_id>/driver.compose.json
:
"pair": [
{
"id": "rf_ir_remote_learn",
"navigation": {
"next": "rf_ir_remote_add"
},
"options": {
"title": {
"en": "Pair your IR remote",
"nl": "Koppel je IR afstandsbediening"
},
"instruction": {
"en": "Press next to pair your remote.",
"nl": "Druk op volgende om je afstandsbediening te koppelen."
}
}
},{
"id": "rf_ir_remote_add"
}
]
RFDevice
/drivers/my_driver/device.js
const { RFDevice } = require('homey-rfdriver');
module.exports = class MyDevice extends RFDevice {
static RX_ENABLED = false; // Set to true for transmitter devices
static CAPABILITIES = {
// When the onoff capability is changed by the user,
// you can assemble a command here.
// 'data' is your device's data object
onoff: ({ value, data }) => ({
address: data.address,
state: value === true,
}),
};
}