Sami Kanderian / Mbed 2 deprecated FRDM-KL25Z_PWM_PTA5_PTD2

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

main.cpp@8:47c89e2ae2e6, 2016-05-13 (annotated)

Committer:
skanderian
Date:
Fri May 13 19:04:14 2016 +0000
Revision:
8:47c89e2ae2e6
Parent:
7:ad8295723268
Child:
9:76be39e5d5ab
Digital equivalent of an RC filter where the inputs are three random numbers and the output is the intensity of the built in RGB LEDs.

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);
skanderian 8:47c89e2ae2e6 5 PwmOut b(LED_BLUE);
skanderian 8:47c89e2ae2e6 6 double rn1;
skanderian 8:47c89e2ae2e6 7 double rn2;
skanderian 8:47c89e2ae2e6 8 double rn3;
skanderian 8:47c89e2ae2e6 9
skanderian 8:47c89e2ae2e6 10 double dt=0.025f;
skanderian 8:47c89e2ae2e6 11 double tau=0.125;//0.55
skanderian 8:47c89e2ae2e6 12 double gain = 0.2;
skanderian 8:47c89e2ae2e6 13 double c0=exp(-dt/tau);
skanderian 8:47c89e2ae2e6 14 double c1=1-c0;
skanderian 8:47c89e2ae2e6 15 int N=(int)(3*tau/dt);
chris 0:cf8a48b1fb23 16
sam_grove 7:ad8295723268 17 int main()
sam_grove 7:ad8295723268 18 {
sam_grove 7:ad8295723268 19 r.period(0.001f);
sam_grove 7:ad8295723268 20 g.period(0.001f);
skanderian 8:47c89e2ae2e6 21 b.period(0.001f);
skanderian 8:47c89e2ae2e6 22 rn1=0;
skanderian 8:47c89e2ae2e6 23 rn2=0;
skanderian 8:47c89e2ae2e6 24 rn3=0;
skanderian 8:47c89e2ae2e6 25
emilmont 2:03e5c29343d1 26 while (true) {
skanderian 8:47c89e2ae2e6 27
skanderian 8:47c89e2ae2e6 28
skanderian 8:47c89e2ae2e6 29 rn1=rand()/(float)RAND_MAX;
skanderian 8:47c89e2ae2e6 30 rn2=rand()/(float)RAND_MAX;
skanderian 8:47c89e2ae2e6 31 rn3=rand()/(float)RAND_MAX;
skanderian 8:47c89e2ae2e6 32 rn1=gain*rn1+(1-gain);
skanderian 8:47c89e2ae2e6 33 rn2=gain*rn2+(1-gain);
skanderian 8:47c89e2ae2e6 34 rn3=gain*rn3+(1-gain);
skanderian 8:47c89e2ae2e6 35
skanderian 8:47c89e2ae2e6 36 for(int i=0; i<N; ++i){
skanderian 8:47c89e2ae2e6 37
skanderian 8:47c89e2ae2e6 38 r=c0*r+c1*rn1;
skanderian 8:47c89e2ae2e6 39 g=c0*g+c1*rn2;
skanderian 8:47c89e2ae2e6 40 b=c0*b+c1*rn3;
skanderian 8:47c89e2ae2e6 41
skanderian 8:47c89e2ae2e6 42 wait(dt);
chris 1:eabc6f5b51d6 43 }
skanderian 8:47c89e2ae2e6 44
skanderian 8:47c89e2ae2e6 45
chris 1:eabc6f5b51d6 46 }
skanderian 8:47c89e2ae2e6 47
skanderian 8:47c89e2ae2e6 48
sam_grove 7:ad8295723268 49 }