Sami Kanderian
On the FRDM-KL25Z, when I declare pins PTA5 and PTD2 as PwmOut pins, they are locked together and can not be independently controlled. It doesn't matter if I change the PWM of PTA5 or PTD2. Whichever one is changed, the other one follows it. The simple code below should keep pin PTD2 at 0% pwm while pin PTA5 should switch between 50% and 0% every 0.5 seconds. Pin PTA5 does alternate between 50% and 0% pwm, but instead of staying at 0% pwm, pin PTD2 follows pin PTA5.
Fork of
frdm_rgbled
by 
Freescale
Diff: main.cpp
- Revision:
- 1:eabc6f5b51d6
- Parent:
- 0:cf8a48b1fb23
- Child:
- 2:03e5c29343d1
--- a/main.cpp Thu Oct 11 14:08:32 2012 +0000
+++ b/main.cpp Fri Oct 12 13:49:40 2012 +0000
@@ -1,12 +1,22 @@
#include "mbed.h"
-BusOut rgb(LED_RED,LED_GREEN,LED_BLUE);
+PwmOut r (LED_RED);
+PwmOut g (LED_GREEN);
+PwmOut b (LED_BLUE);
-int main() {
- int i=0;
+int main()
+{
+ r.period(0.001);
+ g.period(0.001);
+ b.period(0.001);
+
while(1) {
- rgb=i;
- wait (0.25);
- i++;
- }
+ 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);
+ }
+ }
}
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