main.cpp

00001 #include "mbed.h"
00002 #include "PinDetect.h"
00003 
00004 Serial pc(USBTX,USBRX);
00005 
00006 char alphabet[] = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','\0'};
00007 int indices[] = {128,64,32,8,4,2,136,132,130,129,72,68,66,65,40,36,34,33,24,20,18,17,96,6,12,3};
00008 
00009 DigitalOut highPin(D15); // Pin Used to bring left side buttons high may not be needed
00010 bool boolArray[8];
00011 
00012 // Left side pins
00013 PinDetect L1(PTD3);
00014 PinDetect L2(PTD2);
00015 PinDetect L3(PTD0);
00016 PinDetect L4(PTC8);
00017 
00018 // Right side pins
00019 PinDetect R1(PTA16);
00020 PinDetect R2(PTC17);
00021 PinDetect R3(PTC16);
00022 PinDetect R4(PTC11);
00023 
00024 // Left Button ISRs
00025 void L1ButtonHeld(void){
00026     boolArray[0] = 0;
00027     }
00028 void L1ButtonRelease(void){
00029     boolArray[0] = 1;
00030     }   
00031 void L2ButtonHeld(void){
00032     boolArray[1] = 0;
00033     }
00034 void L2ButtonRelease(void){
00035     boolArray[1] = 1;
00036     }       
00037 void L3ButtonHeld(void){
00038     boolArray[2] = 0;
00039     }
00040 void L3ButtonRelease(void){
00041     boolArray[2] = 1;
00042     }   
00043 void L4ButtonHeld(void){
00044     boolArray[3] = 0;
00045     }
00046 void L4ButtonRelease(void){
00047     boolArray[3] = 1;
00048     }   
00049 
00050 // Right Side ISRs
00051 void R1ButtonHeld(void){
00052     boolArray[4] = 0;
00053     }
00054 void R1ButtonRelease(void){
00055      boolArray[4] = 1;
00056     }   
00057 void R2ButtonHeld(void){
00058     boolArray[5] = 0;
00059     }
00060 void R2ButtonRelease(void){
00061     boolArray[5] = 1;
00062     }   
00063 void R3ButtonHeld(void){
00064     boolArray[6] = 0;
00065     }
00066 void R3ButtonRelease(void){
00067     boolArray[6] = 1;
00068     }   
00069 void R4ButtonHeld(void){
00070     boolArray[7] = 0;
00071     }
00072 void R4ButtonRelease(void){
00073     boolArray[7] = 1;
00074     }   
00075 
00076 int main() {
00077     pc.printf("Starting\n\r");
00078     highPin = 1;
00079 
00080     L1.attach_asserted(&L1ButtonHeld);
00081     L1.attach_deasserted(&L1ButtonRelease);
00082     L1.setSampleFrequency();
00083     L1.mode(PullUp);
00084 
00085     L2.attach_asserted(&L2ButtonHeld);
00086     L2.attach_deasserted(&L2ButtonRelease);
00087     L2.setSampleFrequency();
00088     L2.mode(PullUp);
00089     
00090     L3.attach_asserted(&L3ButtonHeld);
00091     L3.attach_deasserted(&L3ButtonRelease);
00092     L3.setSampleFrequency();
00093     L3.mode(PullUp);
00094 
00095     L4.attach_asserted(&L4ButtonHeld);
00096     L4.attach_deasserted(&L4ButtonRelease);
00097     L4.setSampleFrequency();
00098     L4.mode(PullUp);
00099 
00100     R1.attach_asserted(&R1ButtonHeld);
00101     R1.attach_deasserted(&R1ButtonRelease);
00102     R1.setSampleFrequency();
00103     R1.mode(PullUp);
00104 
00105     R2.attach_asserted(&R2ButtonHeld);
00106     R2.attach_deasserted(&R2ButtonRelease);
00107     R2.setSampleFrequency();
00108     R2.mode(PullUp);
00109 
00110     R3.attach_asserted(&R3ButtonHeld);
00111     R3.attach_deasserted(&R3ButtonRelease);
00112     R3.setSampleFrequency();
00113     R3.mode(PullUp);
00114 
00115     R4.attach_asserted(&R4ButtonHeld);
00116     R4.attach_deasserted(&R4ButtonRelease);
00117     R4.setSampleFrequency();
00118     R4.mode(PullUp);
00119    
00120     while(1) {
00121         int num = 0;
00122         int pow = 1;
00123         
00124         for (int i = 7; i>-1; i--){
00125             num = num + boolArray[i] * pow;
00126             pow = pow * 2;
00127         }
00128         
00129         for (int i = 0; i < 27; i++){
00130             if (num == indices[i]){
00131                 pc.printf("%c",alphabet[i]);
00132             }
00133         }
00134             if  (num == 16){
00135                 pc.printf("\b \b");
00136             }
00137             
00138             if (num == 1){
00139                 pc.printf(" ");
00140             }
00141         
00142         wait(0.2);
00143 }