jim hamblen
IR transmit and receive demo using Sparkfun breakout boards See http://mbed.org/users/4180_1/notebook/ir-and-rf-remote-controls/
main.cpp@0:e0bef6b1aa57, 2012-02-10 (annotated)
- Committer:
- 4180_1
- Date:
- Fri Feb 10 18:02:08 2012 +0000
- Revision:
- 0:e0bef6b1aa57
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| 4180_1 | 0:e0bef6b1aa57 | 1 | #include "mbed.h" |
| 4180_1 | 0:e0bef6b1aa57 | 2 | |
| 4180_1 | 0:e0bef6b1aa57 | 3 | Serial pc(USBTX, USBRX); // tx, rx |
| 4180_1 | 0:e0bef6b1aa57 | 4 | Serial device(p13, p14); // tx, rx |
| 4180_1 | 0:e0bef6b1aa57 | 5 | DigitalOut myled1(LED1); |
| 4180_1 | 0:e0bef6b1aa57 | 6 | DigitalOut myled2(LED2); |
| 4180_1 | 0:e0bef6b1aa57 | 7 | PwmOut IRLED(p21); |
| 4180_1 | 0:e0bef6b1aa57 | 8 | //IR send and receive demo |
| 4180_1 | 0:e0bef6b1aa57 | 9 | //LED1 and LED2 indicate TX/RX activity |
| 4180_1 | 0:e0bef6b1aa57 | 10 | //Character typed in PC terminal application sent out and returned back using IR transmitter and receiver |
| 4180_1 | 0:e0bef6b1aa57 | 11 | |
| 4180_1 | 0:e0bef6b1aa57 | 12 | int main() { |
| 4180_1 | 0:e0bef6b1aa57 | 13 | //IR Transmit code |
| 4180_1 | 0:e0bef6b1aa57 | 14 | IRLED.period(1.0/38000.0); |
| 4180_1 | 0:e0bef6b1aa57 | 15 | IRLED = 0.5; |
| 4180_1 | 0:e0bef6b1aa57 | 16 | //Drive IR LED data pin with 38Khz PWM Carrier |
| 4180_1 | 0:e0bef6b1aa57 | 17 | //Drive IR LED gnd pin with serial TX |
| 4180_1 | 0:e0bef6b1aa57 | 18 | device.baud(2400); |
| 4180_1 | 0:e0bef6b1aa57 | 19 | while(1) { |
| 4180_1 | 0:e0bef6b1aa57 | 20 | if(pc.readable()) { |
| 4180_1 | 0:e0bef6b1aa57 | 21 | myled1 = 1; |
| 4180_1 | 0:e0bef6b1aa57 | 22 | device.putc(pc.getc()); |
| 4180_1 | 0:e0bef6b1aa57 | 23 | myled1 = 0; |
| 4180_1 | 0:e0bef6b1aa57 | 24 | } |
| 4180_1 | 0:e0bef6b1aa57 | 25 | //IR Receive code |
| 4180_1 | 0:e0bef6b1aa57 | 26 | if(device.readable()) { |
| 4180_1 | 0:e0bef6b1aa57 | 27 | myled2 = 1; |
| 4180_1 | 0:e0bef6b1aa57 | 28 | pc.putc(device.getc()); |
| 4180_1 | 0:e0bef6b1aa57 | 29 | myled2 = 0; |
| 4180_1 | 0:e0bef6b1aa57 | 30 | } |
| 4180_1 | 0:e0bef6b1aa57 | 31 | } |
| 4180_1 | 0:e0bef6b1aa57 | 32 | } |