ds18x20 sensor reading fix
Fixing how the sensor functions works over time.
1 changed files with 14 additions and 10 deletions
+ 14
- 10
external_temperature_sensor.js
@@ -1,31 +1,35 @@ |
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| 1 | 1 |
var logger = require('winston');
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| 2 | 2 |
var sensor = require("ds18x20")
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| 3 |
+var devices; |
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| 4 |
+var channel; |
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| 3 | 5 |
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| 4 |
-module.exports.start = function(channel){
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| 6 |
+module.exports.start = function(channel_config){
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| 7 |
+ channel = channel_config |
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| 5 | 8 |
logger.info("Starting External temperature module");
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| 6 | 9 |
var isLoaded = sensor.isDriverLoaded(); |
| 7 | 10 |
if(isLoaded){
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| 8 |
- console.log(isLoaded); |
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| 9 |
- var devices = sensor.list(); |
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| 11 |
+ logger.info("ds18x20 sensor drivers are loaded.")
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| 12 |
+ devices = sensor.list(); |
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| 10 | 13 |
console.log(devices); |
| 11 |
- setInterval(function (devices, channel) {
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| 12 |
- var temperature = readSensor(devices, channel); |
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| 14 |
+ setInterval(function () {
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| 15 |
+ var temperature = readSensor(); |
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| 13 | 16 |
}, 5000); |
| 17 |
+ } else {
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+ logger.info("ds18x20 sensor drivers are not loaded.")
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| 14 | 19 |
} |
| 15 | 20 |
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| 16 | 21 |
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| 17 | 22 |
} |
| 18 | 23 |
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| 19 |
-function readSensor(devices, channel) {
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| 24 |
+function readSensor() {
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| 20 | 25 |
// Read Sensor data |
| 26 |
+ if(devices == undefined){
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| 27 |
+ devices = sensor.list(); |
|
| 28 |
+ } |
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| 21 | 29 |
sensor.get(devices[devices.length - 1], function(err, temp){
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| 22 | 30 |
if(err){
|
| 23 | 31 |
console.log(err); |
| 24 | 32 |
} |
| 25 | 33 |
channel.emit('temperature_external', { temperature: temp });
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| 26 | 34 |
}); |
| 27 |
- // give random data for testing |
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| 28 |
- // var high = 25; |
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| 29 |
- // var low = 23; |
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| 30 |
- // var temp = Math.random() * (high - low) + low |
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| 31 | 35 |
} |