Chris Styles
This example positions a lit LED in the I2C LED array using the rotary encoder
main.cpp@0:498b9b4a7bb9, 2010-03-02 (annotated)
- Committer:
- chris
- Date:
- Tue Mar 02 08:27:23 2010 +0000
- Revision:
- 0:498b9b4a7bb9
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| chris | 0:498b9b4a7bb9 | 1 | #include "mbed.h" |
| chris | 0:498b9b4a7bb9 | 2 | #include "RotaryEncode.h" |
| chris | 0:498b9b4a7bb9 | 3 | #include "PCA9532.h" |
| chris | 0:498b9b4a7bb9 | 4 | |
| chris | 0:498b9b4a7bb9 | 5 | RotaryEncode RE(p16,p17); |
| chris | 0:498b9b4a7bb9 | 6 | PCA9532 leds (p28,p27,0xc0); |
| chris | 0:498b9b4a7bb9 | 7 | |
| chris | 0:498b9b4a7bb9 | 8 | int main() { |
| chris | 0:498b9b4a7bb9 | 9 | |
| chris | 0:498b9b4a7bb9 | 10 | int position = 0; |
| chris | 0:498b9b4a7bb9 | 11 | |
| chris | 0:498b9b4a7bb9 | 12 | while(1) { |
| chris | 0:498b9b4a7bb9 | 13 | |
| chris | 0:498b9b4a7bb9 | 14 | int offset = RE.read(); |
| chris | 0:498b9b4a7bb9 | 15 | |
| chris | 0:498b9b4a7bb9 | 16 | if ((offset > 0) && (position < 15)) { |
| chris | 0:498b9b4a7bb9 | 17 | position++; |
| chris | 0:498b9b4a7bb9 | 18 | } |
| chris | 0:498b9b4a7bb9 | 19 | else if ((offset < 0) && (position > 0)) { |
| chris | 0:498b9b4a7bb9 | 20 | position--; |
| chris | 0:498b9b4a7bb9 | 21 | } |
| chris | 0:498b9b4a7bb9 | 22 | |
| chris | 0:498b9b4a7bb9 | 23 | leds.write(0x1 << position); |
| chris | 0:498b9b4a7bb9 | 24 | wait (0.2); |
| chris | 0:498b9b4a7bb9 | 25 | |
| chris | 0:498b9b4a7bb9 | 26 | } |
| chris | 0:498b9b4a7bb9 | 27 | } |
| chris | 0:498b9b4a7bb9 | 28 | |
| chris | 0:498b9b4a7bb9 | 29 |