Example PWM control of RGB LEDs

Dependencies:   mbed

Fork of frdm_rgbled by Freescale

Using three PWM channels to mix the onboard RGB (Red, Green, Blue) LED to make a variety of colors.

NOTE: This example code does not work with FRDM-K64F.

Committer:
Kojto
Date:
Thu Feb 20 17:42:26 2014 +0000
Revision:
5:14891bb08b35
Parent:
2:03e5c29343d1
Child:
7:ad8295723268
frdm_rgb_led - initial version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
chris 0:cf8a48b1fb23 1 #include "mbed.h"
chris 0:cf8a48b1fb23 2
Kojto 5:14891bb08b35 3 PwmOut r(LED_RED);
Kojto 5:14891bb08b35 4 PwmOut g(LED_GREEN);
chris 0:cf8a48b1fb23 5
emilmont 2:03e5c29343d1 6 int main() {
chris 1:eabc6f5b51d6 7 r.period(0.001);
chris 1:eabc6f5b51d6 8 g.period(0.001);
chris 1:eabc6f5b51d6 9
emilmont 2:03e5c29343d1 10 while (true) {
emilmont 2:03e5c29343d1 11 for (float i = 0.0; i < 1.0 ; i += 0.001) {
chris 1:eabc6f5b51d6 12 float p = 3 * i;
chris 1:eabc6f5b51d6 13 r = 1.0 - ((p < 1.0) ? 1.0 - p : (p > 2.0) ? p - 2.0 : 0.0);
chris 1:eabc6f5b51d6 14 g = 1.0 - ((p < 1.0) ? p : (p > 2.0) ? 0.0 : 2.0 - p);
chris 1:eabc6f5b51d6 15 wait (0.0025);
chris 1:eabc6f5b51d6 16 }
chris 1:eabc6f5b51d6 17 }
chris 0:cf8a48b1fb23 18 }