button.cpp

00001 #include "mbed.h"
00002 #include "button.h"
00003 #include "emic2.h"
00004 
00005 //emic2 myTTS(p28, p27); //serial RX,TX pins to emic
00006 DigitalOut led4(LED4);
00007 DigitalOut led3(LED3);
00008 DigitalOut led2(LED2);
00009 
00010 // button constructor
00011 button::button(PwmOut servo, DigitalIn pb, int id)
00012     : servo(servo), pb(pb), state(0), press(0), id(id) {}
00013 
00014 // FUNCTIONS
00015 // get servo pin
00016 PwmOut button::getServoPin()
00017 {
00018     return servo;
00019 }
00020 
00021 // set button state
00022 void button::setState(int mystate)
00023 {
00024     state = mystate;
00025 }
00026 
00027 void button::setPress(int mypress)
00028 {
00029     press = mypress;
00030 }
00031 
00032 // get current state of the button
00033 int button::getState()
00034 {
00035     return state;
00036 }
00037 
00038 int button::getID()
00039 {
00040     return id;
00041 }
00042 
00043 
00044 int button::getPress()
00045 {
00046     return press;
00047 }
00048 
00049 // get current state of the button
00050 int button::getLp()
00051 {
00052     return 0;
00053 }
00054 
00055 // move servo into the slot
00056 void button::moveServoIn()
00057 {
00058     // rotate 90 degrees one way
00059     for(int i=4; i<=7; i++) {
00060         servo = i/100.0;
00061         wait(0.01);
00062     }
00063     switch (id) {
00064         case 1:
00065             led2 = 0;
00066             led3 = 0;
00067             led4 = 1;
00068             break;
00069         case 2:
00070             led2 = 0;
00071             led3 = 1;
00072             led4 = 0;
00073             break;
00074         case 3:
00075             led2 = 0;
00076             led3 = 1;
00077             led4 = 1;
00078             break;
00079         case 4:
00080             led2 = 1;
00081             led3 = 0;
00082             led4 = 0;
00083             break;
00084         case 5:
00085             led2 = 1;
00086             led3 = 0;
00087             led4 = 1;
00088             break;
00089         case 6:
00090             led2 = 1;
00091             led3 = 1;
00092             led4 = 0;
00093             break;
00094     }
00095 }
00096 
00097 // move servo out of the slot
00098 void button::moveServoOut()
00099 {
00100     for(int i=7; i>4; i--) {
00101         servo = i/100.0;
00102         wait(0.01);
00103     }
00104     led2 = 0;
00105     led3 = 0;
00106     led4 = 0;
00107 }
00108 
00109 int button::updateState()
00110 {
00111     // state 0 - button is up, pb = 0
00112     if (pb == 0 && state == 3) {
00113         // nothing happens here, servo is still
00114         state = 0;
00115     }
00116     // state 1 - button is moving down, pb = 1
00117     if (pb == 1 && state == 0) {
00118         moveServoIn();
00119         state = 1;
00120         press = 1;
00121     }
00122     // state 2 - button is down, pb = 0
00123     if (pb == 0 && state == 1) {
00124         // nothing happens here, servo is still
00125         state = 2;
00126     }
00127     // state 3 - button is moving up, pb = 1
00128     if (pb == 1 && state == 2) {
00129         moveServoOut();
00130         state = 3;
00131         press = 0;
00132     }
00133     // state 4 - handle debouncing while button is down
00134     return state;
00135 }
00136 
00137 void button::setup() {
00138     for(int i=0; i<=4; i++) {
00139         servo = i/100.0;
00140         wait(0.01);
00141     }
00142 }