Rob Toulson
by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"
main.cpp@0:de142f1cc7a2, 2012-08-31 (annotated)
- Committer:
- robt
- Date:
- Fri Aug 31 15:24:00 2012 +0000
- Revision:
- 0:de142f1cc7a2
by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| robt | 0:de142f1cc7a2 | 1 | /*Program Example 3.4: Simple program to test KTIR slotted optosensor. Switches an LED according to state of sensor |
| robt | 0:de142f1cc7a2 | 2 | */ |
| robt | 0:de142f1cc7a2 | 3 | #include "mbed.h" |
| robt | 0:de142f1cc7a2 | 4 | DigitalOut redled(p5); |
| robt | 0:de142f1cc7a2 | 5 | DigitalIn opto_switch(p12); |
| robt | 0:de142f1cc7a2 | 6 | |
| robt | 0:de142f1cc7a2 | 7 | int main() |
| robt | 0:de142f1cc7a2 | 8 | { |
| robt | 0:de142f1cc7a2 | 9 | while(1) { |
| robt | 0:de142f1cc7a2 | 10 | if (opto_switch==1) //input = 1 if beam interrupted |
| robt | 0:de142f1cc7a2 | 11 | redled = 1; //switch led on if beam interrupted |
| robt | 0:de142f1cc7a2 | 12 | |
| robt | 0:de142f1cc7a2 | 13 | else |
| robt | 0:de142f1cc7a2 | 14 | redled = 0; //led off if no interruption |
| robt | 0:de142f1cc7a2 | 15 | } //end of while |
| robt | 0:de142f1cc7a2 | 16 | } |