jim hamblen / Mbed 2 deprecated LED_Searchlight

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

main.cpp@0:4420127af442, 2014-11-28 (annotated)

Committer:
4180_1
Date:
Fri Nov 28 18:01:14 2014 +0000
Revision:
0:4420127af442
ver 1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
4180_1 0:4420127af442 1 #include "mbed.h"
4180_1 0:4420127af442 2 //LED Lighthouse or Searchlight lighting effect
4180_1 0:4420127af442 3 PwmOut myled(LED1);
4180_1 0:4420127af442 4 //use Pwm output for dimming
4180_1 0:4420127af442 5
4180_1 0:4420127af442 6 int main()
4180_1 0:4420127af442 7 {
4180_1 0:4420127af442 8 float y=0.0;
4180_1 0:4420127af442 9 while(1) {
4180_1 0:4420127af442 10 for(double x=0.0; x <= 3.14159; x = x + 0.0314159) {
4180_1 0:4420127af442 11 y = sin(x); //nice periodic function 0..1..0
4180_1 0:4420127af442 12 myled = y*y*y;//exponential effect - needs a sharp peak
4180_1 0:4420127af442 13 wait(.025);
4180_1 0:4420127af442 14 }
4180_1 0:4420127af442 15 myled = 0.0;
4180_1 0:4420127af442 16 //most lighthouses have a 5 second delay - so add another 2.5
4180_1 0:4420127af442 17 wait(2.5);
4180_1 0:4420127af442 18 }
4180_1 0:4420127af442 19 }