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/
main.cpp
00001 #include "mbed.h" 00002 //LED Lighthouse or Searchlight lighting effect 00003 PwmOut myled(LED1); 00004 //use Pwm output for dimming 00005 00006 int main() 00007 { 00008 float y=0.0; 00009 while(1) { 00010 for(double x=0.0; x <= 3.14159; x = x + 0.0314159) { 00011 y = sin(x); //nice periodic function 0..1..0 00012 myled = y*y*y;//exponential effect - needs a sharp peak 00013 wait(.025); 00014 } 00015 myled = 0.0; 00016 //most lighthouses have a 5 second delay - so add another 2.5 00017 wait(2.5); 00018 } 00019 }
Generated on Sat Jul 16 2022 23:42:57 by 1.7.2