EBC Mini Project 04
Embedded Linux Class by Mark A. Yoder
Due: 22-Oct-2012
This mini project is a follow up on the sensor mini project. The goal here is to add a web-based graphical display to your sensor. In exercises/node.js/realtime you will find two examples of node.js servers that display realtime data from the beagle.
- buttonBox.js, buttonBox.html
- This is a bone-based example that reads a gpio port, analog in and an i2c device and displays the output in a web browser.
- realtimeDemo.js, realtimeDemo.html
- This is an xM-based example that reads realtime audio and displays it.
Modify one of these to work with your sensor. If you interfaced a display, modify to control your display. I'll leave it open to how you will do it.
My buttonBox.js uses a very crude approach to i2c. I just call i2cget every time I want a value. There is lots of overhead in running i2cget each time. If you are using an i2c device, modify myi2cget.c (in exercises/i2c) to return the current value from your device every time the user hits return. Use this with your version of buttonBox.js to read your i2c device.
Embedded Linux Class by Mark A. Yoder
