jim hamblen
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
diff -r 000000000000 -r 689e5e7eafb1 main.cpp
--- /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);
+ }
+}