Oliver Ainhirn / Mbed OS 85_Event_State

erweitert um RGB LED

main.cpp@1:dc7c5869f9e1, 2019-04-02 (annotated)

Committer:
corsa1600
Date:
Tue Apr 02 18:07:35 2019 +0000
Revision:
1:dc7c5869f9e1
Parent:
0:f0345f20337e 
LED_Blink

Who changed what in which revision?

UserRevisionLine numberNew contents of line
corsa1600 0:f0345f20337e 1 #include "mbed.h"
corsa1600 0:f0345f20337e 2
corsa1600 0:f0345f20337e 3 DigitalOut led1(LED1);
corsa1600 0:f0345f20337e 4 DigitalOut led2(LED2);
corsa1600 0:f0345f20337e 5 DigitalOut led3(LED3);
corsa1600 0:f0345f20337e 6
corsa1600 0:f0345f20337e 7 DigitalOut red(p23);
corsa1600 0:f0345f20337e 8 DigitalOut green(p24);
corsa1600 0:f0345f20337e 9 DigitalOut blue(p25);
corsa1600 0:f0345f20337e 10
corsa1600 1:dc7c5869f9e1 11 class StopLight
corsa1600 1:dc7c5869f9e1 12 {
corsa1600 0:f0345f20337e 13 private:
corsa1600 1:dc7c5869f9e1 14 Timer t1; //mein Timer
corsa1600 0:f0345f20337e 15 EventQueue _queue;
corsa1600 0:f0345f20337e 16 int _pending;
corsa1600 0:f0345f20337e 17
corsa1600 1:dc7c5869f9e1 18 enum state { RED, GREEN, YELLOW,GREENBLINK };
corsa1600 0:f0345f20337e 19
corsa1600 0:f0345f20337e 20 // The _step function is a traditional FSM which enqueues transitions onto the event queue
corsa1600 0:f0345f20337e 21 void _step(state transition) {
corsa1600 0:f0345f20337e 22 switch (transition) {
corsa1600 0:f0345f20337e 23 case RED:
corsa1600 0:f0345f20337e 24 set_red();
corsa1600 0:f0345f20337e 25 _pending = _queue.call_in(1000, this, &StopLight::_step, GREEN);
corsa1600 0:f0345f20337e 26 break;
corsa1600 0:f0345f20337e 27
corsa1600 0:f0345f20337e 28 case GREEN:
corsa1600 0:f0345f20337e 29 set_green();
corsa1600 1:dc7c5869f9e1 30 _pending = _queue.call_in(1000, this, &StopLight::_step, GREENBLINK);
corsa1600 1:dc7c5869f9e1 31 break;
corsa1600 1:dc7c5869f9e1 32
corsa1600 1:dc7c5869f9e1 33 case GREENBLINK:
corsa1600 1:dc7c5869f9e1 34 set_greenBlink();
corsa1600 1:dc7c5869f9e1 35 _pending = _queue.call_in(3000, this, &StopLight::_step, YELLOW);
corsa1600 0:f0345f20337e 36 break;
corsa1600 0:f0345f20337e 37
corsa1600 0:f0345f20337e 38 case YELLOW:
corsa1600 0:f0345f20337e 39 set_yellow();
corsa1600 0:f0345f20337e 40 _pending = _queue.call_in(500, this, &StopLight::_step, RED);
corsa1600 0:f0345f20337e 41 break;
corsa1600 0:f0345f20337e 42 }
corsa1600 0:f0345f20337e 43 }
corsa1600 1:dc7c5869f9e1 44
corsa1600 1:dc7c5869f9e1 45 void set_red()
corsa1600 1:dc7c5869f9e1 46 {
corsa1600 0:f0345f20337e 47 red = 0; green = 1; blue = 1;
corsa1600 0:f0345f20337e 48 }
corsa1600 1:dc7c5869f9e1 49 void set_green()
corsa1600 1:dc7c5869f9e1 50 {
corsa1600 0:f0345f20337e 51 red = 1; green = 0; blue = 1;
corsa1600 1:dc7c5869f9e1 52
corsa1600 0:f0345f20337e 53 }
corsa1600 1:dc7c5869f9e1 54 void set_greenBlink()
corsa1600 1:dc7c5869f9e1 55 {
corsa1600 1:dc7c5869f9e1 56 t1.start(); // ich starte meinen Timer
corsa1600 1:dc7c5869f9e1 57 //red = 1; green = 1; blue = 1;
corsa1600 1:dc7c5869f9e1 58 if(t1.read_ms()>200) // erst wenn 10Hz
corsa1600 1:dc7c5869f9e1 59 {
corsa1600 1:dc7c5869f9e1 60
corsa1600 1:dc7c5869f9e1 61 if(green=1)
corsa1600 1:dc7c5869f9e1 62 {
corsa1600 1:dc7c5869f9e1 63 red = 1; green = 1; blue = 1;
corsa1600 1:dc7c5869f9e1 64 }
corsa1600 1:dc7c5869f9e1 65 else
corsa1600 1:dc7c5869f9e1 66 {
corsa1600 1:dc7c5869f9e1 67 red = 1; green = 0; blue = 1;
corsa1600 1:dc7c5869f9e1 68 }
corsa1600 1:dc7c5869f9e1 69 t1.reset(); // ich resete meinen Timer
corsa1600 1:dc7c5869f9e1 70 }
corsa1600 1:dc7c5869f9e1 71
corsa1600 1:dc7c5869f9e1 72 if ( green=0)
corsa1600 1:dc7c5869f9e1 73 green=1;
corsa1600 1:dc7c5869f9e1 74 else
corsa1600 1:dc7c5869f9e1 75 green=0;
corsa1600 1:dc7c5869f9e1 76 }
corsa1600 1:dc7c5869f9e1 77 void set_yellow()
corsa1600 1:dc7c5869f9e1 78 {
corsa1600 0:f0345f20337e 79 red = 0; green = 0; blue = 1;
corsa1600 1:dc7c5869f9e1 80
corsa1600 1:dc7c5869f9e1 81 /*
corsa1600 1:dc7c5869f9e1 82 wait_ms(150);
corsa1600 1:dc7c5869f9e1 83 red = 1; green = 1; blue = 1;
corsa1600 1:dc7c5869f9e1 84 wait_ms(150);
corsa1600 1:dc7c5869f9e1 85 red = 0; green = 0; blue = 1;
corsa1600 1:dc7c5869f9e1 86 wait_ms(150);
corsa1600 1:dc7c5869f9e1 87 red = 1; green = 1; blue = 1;
corsa1600 1:dc7c5869f9e1 88 */
corsa1600 0:f0345f20337e 89 }
corsa1600 0:f0345f20337e 90 public:
corsa1600 0:f0345f20337e 91 // The fire function can immediately change states in the FSM
corsa1600 1:dc7c5869f9e1 92 void fire()
corsa1600 1:dc7c5869f9e1 93 {
corsa1600 0:f0345f20337e 94 _queue.cancel(_pending);
corsa1600 0:f0345f20337e 95 _queue.call(this, &StopLight::_step, GREEN);
corsa1600 0:f0345f20337e 96 _queue.dispatch();
corsa1600 0:f0345f20337e 97 }
corsa1600 0:f0345f20337e 98 };
corsa1600 0:f0345f20337e 99
corsa1600 0:f0345f20337e 100 StopLight sl;
corsa1600 0:f0345f20337e 101
corsa1600 1:dc7c5869f9e1 102 int main (void)
corsa1600 1:dc7c5869f9e1 103 {
corsa1600 0:f0345f20337e 104 sl.fire();
corsa1600 0:f0345f20337e 105 wait(osWaitForever);
corsa1600 0:f0345f20337e 106 }