4 LED flashing program with LPC1114FN28. Easy configuration for : 1. Flash period 2. Flash polarity ( Actilve Low / High ) 3. Selectable number of LED, 2,3 or 4
main.cpp@0:4e264e403d13, 2014-04-13 (annotated)
- Committer:
- shorie
- Date:
- Sun Apr 13 05:21:25 2014 +0000
- Revision:
- 0:4e264e403d13
First commit with complete funcitonality
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
shorie | 0:4e264e403d13 | 1 | #include "mbed.h" |
shorie | 0:4e264e403d13 | 2 | |
shorie | 0:4e264e403d13 | 3 | /* Pin declaration for LED */ |
shorie | 0:4e264e403d13 | 4 | DigitalOut led1(LED1); |
shorie | 0:4e264e403d13 | 5 | DigitalOut led2(LED2); |
shorie | 0:4e264e403d13 | 6 | DigitalOut led3(dp27); |
shorie | 0:4e264e403d13 | 7 | DigitalOut led4(dp26); |
shorie | 0:4e264e403d13 | 8 | |
shorie | 0:4e264e403d13 | 9 | #define ACTIVELOW // Comment out if the LED driver input is Active High |
shorie | 0:4e264e403d13 | 10 | #define CYCLE 0.5 // Duration of turning on for each LED in second |
shorie | 0:4e264e403d13 | 11 | #define NUMLED 4 // How many LEDs do you have? |
shorie | 0:4e264e403d13 | 12 | |
shorie | 0:4e264e403d13 | 13 | |
shorie | 0:4e264e403d13 | 14 | /* Dont change the lines below here */ |
shorie | 0:4e264e403d13 | 15 | |
shorie | 0:4e264e403d13 | 16 | #ifdef ACTIVELOW |
shorie | 0:4e264e403d13 | 17 | #define LEDON 0 |
shorie | 0:4e264e403d13 | 18 | #define LEDOFF 1 |
shorie | 0:4e264e403d13 | 19 | #else |
shorie | 0:4e264e403d13 | 20 | #define LEDON 1 |
shorie | 0:4e264e403d13 | 21 | #define LEDOFF 0 |
shorie | 0:4e264e403d13 | 22 | #endif /* ACTIVELOW */ |
shorie | 0:4e264e403d13 | 23 | |
shorie | 0:4e264e403d13 | 24 | |
shorie | 0:4e264e403d13 | 25 | int main() { |
shorie | 0:4e264e403d13 | 26 | |
shorie | 0:4e264e403d13 | 27 | /* repeat forever */ |
shorie | 0:4e264e403d13 | 28 | while(1) { |
shorie | 0:4e264e403d13 | 29 | /* Turn on and off LED 1 */ |
shorie | 0:4e264e403d13 | 30 | led1 = LEDON; |
shorie | 0:4e264e403d13 | 31 | wait(CYCLE); |
shorie | 0:4e264e403d13 | 32 | led1 = LEDOFF; |
shorie | 0:4e264e403d13 | 33 | |
shorie | 0:4e264e403d13 | 34 | /* Turn on and off LED 2 */ |
shorie | 0:4e264e403d13 | 35 | led2 = LEDON; |
shorie | 0:4e264e403d13 | 36 | wait(CYCLE); |
shorie | 0:4e264e403d13 | 37 | led2 = LEDOFF; |
shorie | 0:4e264e403d13 | 38 | |
shorie | 0:4e264e403d13 | 39 | /* if only two LED, skip LED 3 and 4 */ |
shorie | 0:4e264e403d13 | 40 | #if NUMLED <= 2 |
shorie | 0:4e264e403d13 | 41 | continue; |
shorie | 0:4e264e403d13 | 42 | #endif |
shorie | 0:4e264e403d13 | 43 | /* Turn on and off LED 3 */ |
shorie | 0:4e264e403d13 | 44 | led3 = LEDON; |
shorie | 0:4e264e403d13 | 45 | wait(CYCLE); |
shorie | 0:4e264e403d13 | 46 | led3 = LEDOFF; |
shorie | 0:4e264e403d13 | 47 | |
shorie | 0:4e264e403d13 | 48 | /* if only three LED, skip LED 4 */ |
shorie | 0:4e264e403d13 | 49 | #if NUMLED <= 3 |
shorie | 0:4e264e403d13 | 50 | continue; |
shorie | 0:4e264e403d13 | 51 | #endif |
shorie | 0:4e264e403d13 | 52 | /* Turn on and off LED 4 */ |
shorie | 0:4e264e403d13 | 53 | led4 = LEDON; |
shorie | 0:4e264e403d13 | 54 | wait(CYCLE); |
shorie | 0:4e264e403d13 | 55 | led4 = LEDOFF; |
shorie | 0:4e264e403d13 | 56 | }} |