Diff: main.cpp

Revision:

1:41844163cb7f

Parent:

0:755a36a9fc5c

diff -r 755a36a9fc5c -r 41844163cb7f main.cpp
--- a/main.cpp	Sat Mar 23 22:47:55 2019 +0000
+++ b/main.cpp	Tue Mar 26 17:45:39 2019 +0000
@@ -1,25 +1,32 @@
 #include "mbed.h"
 
-
-Serial pc(USBTX, USBRX,9600);
-Serial blue(PTC15, PTC14, 115200); //tx, rx
-Serial other(PTC17, PTC16, 115200);
+//tx, rx, baud rate
+Serial pc(USBTX, USBRX,9600); 
+Serial blue(PTC15, PTC14, 115200); // for comm with bluetooth hc06
+Serial other(PTC17, PTC16, 115200);// for comm with S32K
 Ticker locker;
 
-char prev = 'z';
+char prev = 'z';   //init states for use to determine if car needs to be locked
 char current = 'y';
 bool nflag = true;
 
+// A callback function used to determine if car needs to be locked
+// it is called 
 void lockCar()
 {
     pc.printf("ticker\r\n\r");
     char send[] = "bj";
+    
+    //checks to see if not already locked
     if(nflag)
     {
+        //if no new key is pressed lock car
         if(prev == current)
         {
+            //stops motor.
             for(int i = 1; i< 50; i++){other.putc(send[1]);}
             wait(5);
+            //locks car
             for(int i = 1; i< 50; i++){other.putc(send[0]);}
             prev = 'z';
             nflag = false;
@@ -33,25 +40,34 @@
 
 int main()
 {
-    int i = 0;
+    int i = 0;//init variables
     int j = 0;
     char hold[100] ="String";
-    locker.attach(&lockCar, 15.0);
+    //attaches the callback function to a timer
+    locker.attach(&lockCar, 20.0);
     pc.printf(hold);
+    //controlling loop
     while (true)
      {
+        //read from bluetooth if something is avalible
         while(blue.readable())
         {
+            //puts characters from bluetooth in buffer
             hold[j++] = blue.getc();
             i = 10;
             nflag = true;
         }
         
+        //if buffer has elements
         while(i)
         {
+            //put null at end of string
             hold[j] = '\0';
+            //send element to S32K
             other.putc(hold[0]);
+            //update flag for locking system
             current = hold[0];
+            //display info to tera term
             pc.printf("%d:", i);
             pc.printf(hold);
             pc.putc('\n');