Diff: main.cpp

Revision:

8:39172c01c0f1

Parent:

7:79d0b30fedb4

Child:

9:c216d7b63f92

--- a/main.cpp	Tue Mar 15 19:14:45 2016 +0000
+++ b/main.cpp	Tue Mar 15 19:36:01 2016 +0000
@@ -2,32 +2,42 @@
 #include <mpr121.h>
 #include <string>
 #include "Shiftbrite.h"
+//Print output to pc via usb
 RawSerial  pc(USBTX, USBRX);
+//Print output to Bluetooth device
 RawSerial  dev(p9,p10);
+//LEDs
 DigitalOut led1(LED1);
-DigitalOut led4(LED4);
-InterruptIn interrupt(p26);
-I2C i2c(p28, p27);
-Mpr121 mpr121(&i2c, Mpr121::ADD_VSS);
-Shiftbrite myShiftbrite(p16, p15, p11, p12, p13);
 DigitalOut led2(LED2);
 DigitalOut led3(LED3);
+DigitalOut led4(LED4);
 
+//Interrupt for Touchpad
+InterruptIn interrupt(p26);
+//I2C for Touchpad 
+I2C i2c(p28, p27);
+//Touchpad 
+Mpr121 mpr121(&i2c, Mpr121::ADD_VSS);
+//Shiftbrite
+Shiftbrite myShiftbrite(p16, p15, p11, p12, p13);
+
+//Code Combinations
 int code1[] = {1,1,1,1};
 int code2[] = {2,2,2,2};
-int code3[] = {8,8,8,8};
+int code3[] = {8,8,8,8};//Key 4 (labeled 3) on touchpad
 
-volatile int input[4];
-volatile int inNdx = 0;
-bool codeIn = false;
+volatile int input[4]; //stores input values
+volatile int inNdx = 0;//to place combination in input
+bool codeIn = false; //determine if code is being entered via bluetooth
 
+
+//Interrupt method to read from touchpad
 void fallInterrupt() {
        int key_code=0;
        int i = 0;
-   // myShiftbrite.write(0,0,0);
-   // myShiftbrite.write(0,0,255);
     int value=mpr121.read(0x00);
     value +=mpr121.read(0x01)<<8;
+    //output value to onboard LEDs
     for (i=0; i<12; i++) {
         if (((value>>i)&0x01)==1) key_code=i+1;
         }
@@ -35,6 +45,7 @@
     led3=(key_code>>1) & 0x01;
     led2=(key_code>>2) & 0x01;
     led1=(key_code>>3) & 0x01;
+    //ignore second character and input value into inputNdx
     if (value > 0){
     input[inNdx] = value;
     inNdx++;  
@@ -44,6 +55,7 @@
     
 }
 
+//receive value from bluetooth device
 void dev_recv()
 {
     string temp ="";
@@ -69,7 +81,7 @@
     }
     
 }
-
+//receive value from PC
 void pc_recv()
 {
     led4 = !led4;
@@ -80,29 +92,34 @@
 
 int main()
 {
+    //reset Shiftbrite
     myShiftbrite.write(0,0,0);
     pc.baud(9600);
     dev.baud(9600);
+    //Set up interrupt
     interrupt.fall(&fallInterrupt);
     interrupt.mode(PullUp);
-
+    //Set up read methods bluetooth and PC
     pc.attach(&pc_recv, Serial::RxIrq);
     dev.attach(&dev_recv, Serial::RxIrq);
+    
     dev.printf("Monitoring Locked Device\n");
     dev.printf("To unlock the device remotely, send 'a'.\n");
 
     while(1) {
-      //  sleep();
          wait(5);
-        pc.printf("ndx: %d\n", inNdx);
+        //If three characters have been entered, attempt to unlock
         if (inNdx > 3) {
             dev.printf("Attempting to Unlock\n");
             codeIn = false;
             bool c1 = true; bool c2 = true; bool c3 = true;
+            //check entered code against saved codes
             for(int x = 0; x <= 3; x++){
+                //if no code matches, end loop
                 if(!(c1 | c2 | c3)) {
                     break;    
                 } else {
+                    //compare codes
                     if (code1[x] != input[x]){c1 = false;}
                     if (code2[x] != input[x]){c2 = false;}
                     if (code3[x] != input[x]){c3 = false;}
@@ -110,24 +127,24 @@
                 }   
             }
             if(c1){
-                //update website to say user 1 entered last
+                //Send welcome user 1 to bluetooth
                 dev.printf("Welcome User 1\n");
-        //        myShiftbrite.write(0,0,0);
                 myShiftbrite.write(0,255,0);
             } else if(c2) {
+                //Send welcome user 2 to bluetooth
                 dev.printf("Welcome User 2\n");
-         //       myShiftbrite.write(0,0,0);
                 myShiftbrite.write(0,255,0);
             } else if(c3) {
+                //Send welcome user 3 to bluetooth
                 dev.printf("Welcome User 3\n");
-         //       myShiftbrite.write(0,0,0);
                 myShiftbrite.write(0,255,0);
             } else {
+                //Send welcome Try Again message to bluetooth
                 dev.printf("Try Again\n");
-         //       myShiftbrite.write(0,0,0);
                 myShiftbrite.write(255,0,0); 
  
             }
+            //reset indexing variable when checking is complete
             inNdx = 0;
             
         }