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/

Dependencies:   mbed

Files at this revision

API Documentation at this revision

Comitter:
4180_1
Date:
Fri Nov 28 17:57:11 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 8eb6d01eab13 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Nov 28 17:57:11 2014 +0000
@@ -0,0 +1,21 @@
+#include "mbed.h"
+//LED fire lighting effect
+PwmOut myled(LED1);
+//Use PWM output to enable LED dimming
+
+//Use Cs random number generator rand(), but scaled and
+//converted to a float (range 0.0 to 1.0) for PWM output
+inline float random_number()
+{
+    return (rand()/(float(RAND_MAX)));
+}
+
+int main()
+{
+    while(1) {
+//get a new random number for PWM
+        myled = random_number();
+//a bit slower time delay can be used for fire
+        wait(0.04);
+    }
+}
diff -r 000000000000 -r 8eb6d01eab13 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Nov 28 17:57:11 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/031413cf7a89
\ No newline at end of file