Example PWM control of RGB LEDs
Dependencies: mbed
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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.
main.cpp
- Committer:
- emilmont
- Date:
- 2012-10-23
- Revision:
- 2:03e5c29343d1
- Parent:
- 1:eabc6f5b51d6
- Child:
- 5:14891bb08b35
File content as of revision 2:03e5c29343d1:
#include "mbed.h" PwmOut r (LED_RED); PwmOut g (LED_GREEN); PwmOut b (LED_BLUE); int main() { r.period(0.001); g.period(0.001); b.period(0.001); while (true) { for (float i = 0.0; i < 1.0 ; i += 0.001) { float p = 3 * i; r = 1.0 - ((p < 1.0) ? 1.0 - p : (p > 2.0) ? p - 2.0 : 0.0); g = 1.0 - ((p < 1.0) ? p : (p > 2.0) ? 0.0 : 2.0 - p); b = 1.0 - ((p < 1.0) ? 0.0 : (p > 2.0) ? 3.0 - p : p - 1.0); wait (0.0025); } } }