Source: sensor
Sensor does not accept incoming signals, it watches the external world and send signals to your system. It is the signal source.
Signature
NS.sensor(comment : string, inputs : map, outputs : map, watch : function) : Node
Arguments
| Arguement | Type | Description |
|---|---|---|
| comment | string | optional, the comment of the sensor |
| inputs | map | optional, the input description |
| outputs | map | optional, the output description |
| watch | function | the watch function |
Return
| Type | Description |
|---|---|
| Node | the sensor node |
Create a sensor
const ns = collar.ns('collarjs.demo.sensor');
const sensor = ns.sensor(function(options) {
setTimeout(() => {
this.send({
event : "timeout",
delay : 10000
})
}, 10000);
});
// sensor starts to watch when it is created
Create a sensor with options
const sensor = ns.sensor(function(options) {
var delay = 10000; // default delay
if (options.delay)
delay = options.delay; // use delay in options
else
return; // if no delay defined, watch nothing
setTimeout(() => {
this.send({
event : "timeout",
delay : delay
})
}, delay);
});
sensor.watch({delay : 5000}); // start watch with options