![](/media/cache/profiles/ibmfp2.jpg.50x50_q85.jpg)
Demo of LED lighting effects using PWM and wait for time delays. Pins are setup for LPC1768 platform’s LEDs. For complete information, see http://developer.mbed.org/users/4180_1/notebook/led-lighting-effects-for-modelers/
Diff: main.cpp
- Revision:
- 0:689e5e7eafb1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Fri Nov 28 17:58:01 2014 +0000 @@ -0,0 +1,28 @@ +#include "mbed.h" +//LED House Lighting effect with flickering TV and room lights randomly changing +DigitalOut porch(LED1); +DigitalOut room(LED2); +DigitalOut room2(LED3); +//DigitalOut OK for LEDs just turing on and off +PwmOut TV(LED4); +//Need PWM for nice flickering TV effect + +//Use Cs random number generator rand(), but scaled and +//converted to a float from 0.0 to 1.0 +inline float random_number() +{ + return (rand()/(float(RAND_MAX))); +} + +int main() +{ + float x=0.0; + porch = 1; + while(1) { + x = random_number(); + TV = x; + if (x >0.98) room = !room; + if (x >0.99) room2 = !room2; + wait(0.05); + } +}