Francisco Guerra / Mbed 2 deprecated SymbitronValves

Amplitude Modulation Code

Dependencies:   HIDScope mbed

Fork of SymbitronValves by First Last

main.cpp@0:80993ec26dfd, 2015-06-26 (annotated)

Committer:
vsluiter
Date:
Fri Jun 26 15:12:05 2015 +0000
Revision:
0:80993ec26dfd
Child:
1:926025d703f4
Demonstrator

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vsluiter 0:80993ec26dfd 1 #include "mbed.h"
vsluiter 0:80993ec26dfd 2 #include "FastPWM.h"
vsluiter 0:80993ec26dfd 3
vsluiter 0:80993ec26dfd 4
vsluiter 0:80993ec26dfd 5 #define V1_OPEN D2
vsluiter 0:80993ec26dfd 6 #define V1_CLOSE D3
vsluiter 0:80993ec26dfd 7 #define V2_OPEN D4
vsluiter 0:80993ec26dfd 8 #define V2_CLOSE D5
vsluiter 0:80993ec26dfd 9 #define V3_OPEN D6
vsluiter 0:80993ec26dfd 10 #define V3_CLOSE D7
vsluiter 0:80993ec26dfd 11 #define V4_OPEN D8
vsluiter 0:80993ec26dfd 12 #define V4_CLOSE D9
vsluiter 0:80993ec26dfd 13
vsluiter 0:80993ec26dfd 14 #define PRESSURE A0
vsluiter 0:80993ec26dfd 15
vsluiter 0:80993ec26dfd 16 class Valve
vsluiter 0:80993ec26dfd 17 {
vsluiter 0:80993ec26dfd 18 public:
vsluiter 0:80993ec26dfd 19 Valve(PinName open, PinName close);
vsluiter 0:80993ec26dfd 20 void write(float pwm);
vsluiter 0:80993ec26dfd 21 private:
vsluiter 0:80993ec26dfd 22 float _pwm;
vsluiter 0:80993ec26dfd 23 float _period;
vsluiter 0:80993ec26dfd 24 FastPWM _open;
vsluiter 0:80993ec26dfd 25 FastPWM _close;
vsluiter 0:80993ec26dfd 26 };
vsluiter 0:80993ec26dfd 27
vsluiter 0:80993ec26dfd 28 Valve::Valve(PinName open, PinName close): _open(open), _close(close)
vsluiter 0:80993ec26dfd 29 {
vsluiter 0:80993ec26dfd 30 _period = 0.05;
vsluiter 0:80993ec26dfd 31 _open.period(_period);
vsluiter 0:80993ec26dfd 32 _close.period(_period);
vsluiter 0:80993ec26dfd 33 _open.pulsewidth(0);
vsluiter 0:80993ec26dfd 34 _close.pulsewidth(0);
vsluiter 0:80993ec26dfd 35 }
vsluiter 0:80993ec26dfd 36
vsluiter 0:80993ec26dfd 37 void Valve::write(float pwm)
vsluiter 0:80993ec26dfd 38 {
vsluiter 0:80993ec26dfd 39 if(pwm > 1)
vsluiter 0:80993ec26dfd 40 pwm = 1;
vsluiter 0:80993ec26dfd 41 if(pwm < -1)
vsluiter 0:80993ec26dfd 42 pwm = -1;
vsluiter 0:80993ec26dfd 43 if(pwm > 0)
vsluiter 0:80993ec26dfd 44 {
vsluiter 0:80993ec26dfd 45 _close.pulsewidth(0);
vsluiter 0:80993ec26dfd 46 _open.pulsewidth(_period*pwm);
vsluiter 0:80993ec26dfd 47 }
vsluiter 0:80993ec26dfd 48 else
vsluiter 0:80993ec26dfd 49 {
vsluiter 0:80993ec26dfd 50 _open.pulsewidth(0);
vsluiter 0:80993ec26dfd 51 _close.pulsewidth(_period*pwm*-1);
vsluiter 0:80993ec26dfd 52 }
vsluiter 0:80993ec26dfd 53 }
vsluiter 0:80993ec26dfd 54
vsluiter 0:80993ec26dfd 55 int main() {
vsluiter 0:80993ec26dfd 56 Valve v1(V1_OPEN, V1_CLOSE);
vsluiter 0:80993ec26dfd 57 Valve v2(V2_OPEN, V2_CLOSE);
vsluiter 0:80993ec26dfd 58 Valve v3(V3_OPEN, V3_CLOSE);
vsluiter 0:80993ec26dfd 59 Valve v4(V4_OPEN, V4_CLOSE);
vsluiter 0:80993ec26dfd 60 //PwmOut v1(V1_OPEN);
vsluiter 0:80993ec26dfd 61 //v1.period(0.2);
vsluiter 0:80993ec26dfd 62 while(1) {
vsluiter 0:80993ec26dfd 63 static float time = 0;
vsluiter 0:80993ec26dfd 64 wait(0.02);
vsluiter 0:80993ec26dfd 65 time +=0.05;
vsluiter 0:80993ec26dfd 66 v1.write(sin(time));
vsluiter 0:80993ec26dfd 67 v2.write(sin(time));
vsluiter 0:80993ec26dfd 68 v3.write(sin(time));
vsluiter 0:80993ec26dfd 69 v4.write(sin(time));
vsluiter 0:80993ec26dfd 70 }
vsluiter 0:80993ec26dfd 71 }