Revision 4:e20e2500914f, committed 2017-04-21

Comitter:

ECE4180

Date:

Fri Apr 21 00:37:35 2017 +0000

Parent:

3:ceca81e8ac2b

Child:

5:786cb04aaecc

Commit message:

bootyful and we love you

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Watchdog.h	Fri Apr 21 00:37:35 2017 +0000
@@ -0,0 +1,17 @@
+class Watchdog {
+public:
+// Load timeout value in watchdog timer and enable
+    void kick(float s) {
+        LPC_WDT->WDCLKSEL = 0x1;                // Set CLK src to PCLK
+        uint32_t clk = SystemCoreClock / 16;    // WD has a fixed /4 prescaler, PCLK default is /4
+        LPC_WDT->WDTC = s * (float)clk;
+        LPC_WDT->WDMOD = 0x3;                   // Enabled and Reset
+        kick();
+    }
+// "kick" or "feed" the dog - reset the watchdog timer
+// by writing this required bit pattern
+    void kick() {
+        LPC_WDT->WDFEED = 0xAA;
+        LPC_WDT->WDFEED = 0x55;
+    }
+};
\ No newline at end of file

--- a/main.cpp	Fri Apr 21 00:07:54 2017 +0000
+++ b/main.cpp	Fri Apr 21 00:37:35 2017 +0000
@@ -2,7 +2,7 @@
 #include "MBed_Adafruit_GPS.h"
 #include "math.h"
 #include "PubNub.h"
-
+#include "Watchdog.h"
 
 string pubkey("pub-c-f9091d93-c3a8-41a6-80c2-c6e3f840504f");
 string subkey("sub-c-f558e36c-130b-11e7-b59a-02ee2ddab7fe");
@@ -18,6 +18,8 @@
 char tx_buffer[4096];
 char rx_buffer[4096];
 
+Watchdog wdt;
+
 Serial * gps_Serial;
 Serial pc (USBTX, USBRX); //Set-up for debugging
 
@@ -62,6 +64,7 @@
 
 int main()
 {
+    wdt.kick(8.0);
     pc.baud(115200); //Set PC baud rate
     pnub.huz.setssid("Verizon-SM-G900V-258B");
     pnub.huz.setpwd("trnd533)");
@@ -94,16 +97,16 @@
     wait(1);
     refresh_Timer.start();  //starts the clock on the timer
     while(true) {
-         c = myGPS.read();   //queries the GPS
-        
+        c = myGPS.read();   //queries the GPS
+
         //if (c) { pc.printf("%c", c); } //this line will echo the GPS data if not paused
         //If GPS has data, parse it
-        
-         //check if we recieved a new message from GPS, if so, attempt to parse it,
+
+        //check if we recieved a new message from GPS, if so, attempt to parse it,
         if ( myGPS.newNMEAreceived() ) {
             if ( !myGPS.parse(myGPS.lastNMEA()) ) {
-                continue;   
-            }    
+                continue;
+            }
         }
 
         //check if enough time has passed to warrant sending new GPS data
@@ -127,5 +130,6 @@
                 pc.printf("No Satelite Fix\r\n");
             }
         }
+        wdt.kick();
     }
 }
\ No newline at end of file