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/
Revision 0:4420127af442, committed 2014-11-28
- Comitter:
- 4180_1
- Date:
- Fri Nov 28 18:01:14 2014 +0000
- Commit message:
- ver 1.0
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r 4420127af442 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Nov 28 18:01:14 2014 +0000
@@ -0,0 +1,19 @@
+#include "mbed.h"
+//LED Lighthouse or Searchlight lighting effect
+PwmOut myled(LED1);
+//use Pwm output for dimming
+
+int main()
+{
+ float y=0.0;
+ while(1) {
+ for(double x=0.0; x <= 3.14159; x = x + 0.0314159) {
+ y = sin(x); //nice periodic function 0..1..0
+ myled = y*y*y;//exponential effect - needs a sharp peak
+ wait(.025);
+ }
+ myled = 0.0;
+ //most lighthouses have a 5 second delay - so add another 2.5
+ wait(2.5);
+ }
+}
diff -r 000000000000 -r 4420127af442 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Nov 28 18:01:14 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/031413cf7a89 \ No newline at end of file