PIN_DETECT.cpp

00001 /*
00002  * SWITCH DEBOUNCING
00003  * ^^^^^^ ^^^^^^^^^^
00004  *
00005  * FILE NAME: PIN_DETECT.cpp
00006  * USAGE:  Extends DigitalIn to add mechanical switch deboucing of inputs.
00007  */
00008 
00009 
00010 /*
00011 * including the wanted library files.
00012 */
00013 #include "mbed.h"
00014 #include "main.h"
00015 #include "PIN_DETECT.h"
00016 #include "PinDetect.h"
00017 
00018 /********************************************************************************
00019 *********************************************************************************
00020 ******* WARNING: to used this file, PinDetect library must be import ************
00021 *******                    into the program                          ************
00022 *********************************************************************************
00023 *********************************************************************************/
00024 
00025 PinDetect top_SW (p13);
00026 PinDetect NR_top_SW (p14);
00027 PinDetect bottom_SW (p15);
00028 PinDetect NR_bottom_SW (p16);
00029 PinDetect top_call (p17);
00030 PinDetect bottom_call (p19);
00031 PinDetect goto_top (p20);
00032 PinDetect goto_bottom (p21);
00033 PinDetect safety_button (p22);
00034 
00035 /*>>>>>>>>>>>>>>>>>>>>>>>>>>>>> functions callbacks follow <<<<<<<<<<<<<<<<<<<<<<<<<<<<*/
00036 void SW_1 (void) { /* top switch pressed*/
00037     new_event(at_top);
00038 }
00039 
00040 void SW_2 (void) { /*near top switch pressed*/
00041     new_event(NR_top);
00042 }
00043 
00044 void SW_3(void) { /*near bottom switch pressed*/
00045     new_event(NR_bottom);
00046 }
00047 
00048 void SW_4 (void) { /*bottom switch pressed*/
00049     new_event(at_bottom);
00050 }
00051 
00052 void SW_5 (void) { /*top call button pressed*/
00053     new_event(call_2);
00054     flag_call_2=1;
00055 }
00056 
00057 void SW_6 (void) { /*bottom call button pressed*/
00058     new_event(call_1);
00059     flag_call_1=1;
00060 }
00061 
00062 void SW_7 (void) { /*go to top button*/
00063     new_event(B_level_2);
00064 }
00065 
00066 void SW_8 (void) { /*go to bottom button*/
00067     new_event(B_level_1);
00068 }
00069 
00070 void SW_9 (void) { /*safety switch*/
00071     new_event(safety);
00072 }
00073 
00074 // C function for pin detect
00075 
00076 void switches (void) {
00077 // Debouncing >>>>
00078 
00079     // for switch 1 (top switch)
00080     top_SW.mode( PullUp );
00081     top_SW.setAssertValue(0);
00082     top_SW.attach_asserted( &SW_1 );
00083     top_SW.setSampleFrequency();
00084 
00085 
00086     // for switch 2 (near top switch)
00087     NR_top_SW.mode( PullUp );
00088     NR_top_SW.setAssertValue(0);
00089     NR_top_SW.attach_asserted( &SW_2 );
00090     NR_top_SW.setSampleFrequency();// Defaults to 20ms.
00091 
00092 
00093     // for switch 3 (near bottom switch)
00094     bottom_SW.mode( PullUp );
00095     bottom_SW.setAssertValue(0);
00096     bottom_SW.attach_asserted( &SW_3 );
00097     bottom_SW.setSampleFrequency();// Defaults to 20ms.
00098 
00099 
00100     // for switch 4 (bottom switch)
00101     NR_bottom_SW.mode( PullUp );
00102     NR_bottom_SW.setAssertValue(0);
00103     NR_bottom_SW.attach_asserted( &SW_4 );
00104     NR_bottom_SW.setSampleFrequency();// Defaults to 20ms.
00105 
00106 
00107     // for switch 5 (top call switch)
00108     top_call.mode( PullUp );
00109     top_call.setAssertValue(0);
00110     top_call.attach_asserted( &SW_5 );
00111     top_call.setSampleFrequency();// Defaults to 20ms.
00112 
00113 
00114     // for switch 6 (bottom call switch)
00115     bottom_call.mode( PullUp );
00116     bottom_call.setAssertValue(0);
00117     bottom_call.attach_asserted( &SW_6 );
00118     bottom_call.setSampleFrequency();// Defaults to 20ms.
00119 
00120 
00121     // for switch 7 (level select button)
00122     goto_top.mode( PullUp );
00123     goto_top.setAssertValue(0);
00124     goto_top.attach_asserted( &SW_7 );
00125     goto_top.setSampleFrequency();// Defaults to 20ms.
00126 
00127 
00128     // for switch 8 (level select button)
00129     goto_bottom.mode( PullUp );
00130     goto_bottom.setAssertValue(0);
00131     goto_bottom.attach_asserted( &SW_8 );
00132     goto_bottom.setSampleFrequency();// Defaults to 20ms.
00133 
00134 
00135     // for switch 9 (safety switch)
00136     safety_button.mode( PullUp );
00137     safety_button.setAssertValue(0);
00138     safety_button.attach_asserted( &SW_9 );
00139     safety_button.setSampleFrequency();// Defaults to 20ms.
00140 }
00141 
00142 
00143 /********************************************************************************
00144 *********************************************************************************
00145 ******* for more detail about switch depancing program vist         *************
00146 *******  http://mbed.org/users/AjK/libraries/PinDetect/lkyxpw       *************
00147 *********************************************************************************
00148 *********************************************************************************/