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.

Dependencies:   mbed

Fork of frdm_rgbled by Freescale

Revision:
5:14891bb08b35
Parent:
2:03e5c29343d1
Child:
7:ad8295723268
diff -r 0b2084fce8c7 -r 14891bb08b35 main.cpp
--- a/main.cpp	Tue Feb 19 23:47:40 2013 +0000
+++ b/main.cpp	Thu Feb 20 17:42:26 2014 +0000
@@ -1,20 +1,17 @@
 #include "mbed.h"
 
-PwmOut r (LED_RED);
-PwmOut g (LED_GREEN);
-PwmOut b (LED_BLUE);
+PwmOut r(LED_RED);
+PwmOut g(LED_GREEN);
 
 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);
         }
     }