https://github.com/simenkid/tri-state

A status manager
https://github.com/simenkid/tri-state

Last synced: about 1 month ago
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A status manager

• Host: GitHub
• URL: https://github.com/simenkid/tri-state
• Owner: simenkid
• License: mit
• Created: 2016-08-04T05:56:45.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-01-24T03:15:08.000Z (almost 8 years ago)
• Last Synced: 2024-04-20T13:57:32.935Z (7 months ago)
• Size: 1.95 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# tri-state

A status manager

```js

var exec = require('child_process').exec;

// ...

// 假設 gpio 已經 export 出來, direction 也設定好了

// 以下程式碼沒有測試過, 寫個大概

// 它在 /app/model/model.js 裡面第 24 行附近

so3.init('lightCtrl', 0, {

    onOff: {

        read: function (cb) {

            exec('cat /sys/class/gpio/gpioXX/value', function (err, stdout, stderr) {

                if (err) {

                    cb(err);

                } else {

                    // stdout is result, I think its a string '0' or '1',

                    // we can use parseInt() to make it a number. 這個請自己確定一下囉

                    cb(null, parseInt(stdout);  

                }

            });

        },

        write: function (val, cb) {

            var valWritten = val ? 1 : 0;

            exec('echo ' + valWritten + ' > /sys/class/gpio/gpioXX/value', function (err, stdout, stderr) {

                if (err)

                    cb(err);

                else

                    cb(null, val);

            });

        }

    }

});

```