A simple node.js application to demonstrate some of the possibilities of using the board to serve data to a web page.
The sample app reads the value of the light sensor and serves it as JSON to a web page, that is also served by the app.
To run the app:
1/ Check the ip address at line 23 of main.js and set it the the ip address of your board if neccessary. It is the ip address you used to connect to your board. 2/ Start the program, then start a browser on your host. We used Chrome, but the code should work with any browser. 3/ Enter the URL http:/:1337/lightsensor. A simple, and somewhat ugly thermometer will be displayed.
This code has been deliberately kept simple. Obvious improvements would be:
1/ Change the way the thermometer is displayed. HTML5 has other ways to do this. There are also graphing packages that will no doubt produce a prettier graphical display.
2/ Improve the interpolation formula. The sample uses linear interpolation, A higher order interpolation may be worthwhile.
3/ There are packages that support more sophisticated web server development. You could replace the very crude code in the example with such a package.
4/ The ip address could be automatically detected instead of being hard coded.
This template is part of the Intel(R) XDK IoT Edition. Download the Intel(R) XDK at http://software.intel.com/en-us/html5. To see the technical details of the sample, please visit the sample article page at https://software.intel.com/en-us/xdk-sample-creating-a-web-server
- main.js
- lightsensor.html
- package.json
- README.md
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Included on the IoTDevkit Linux Image
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source: https://github.com/intel-iot-devkit/mraa