Diff: wdt.h

Revision:

0:8f5b2af5e1d5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wdt.h	Sat Jan 30 02:21:04 2016 +0000
@@ -0,0 +1,51 @@
+#include "mbed.h"
+
+//----------------------------
+//Watchdog class
+class Watchdog {
+public:
+
+    //Directions on how to use this stuff can be found in the lpc1768 user manual. 
+    //LPC_WDT is the "Register set", -> is the register, 0x is the hex value to write
+    //Can also use 0B to write binary, or just base 10 by =
+    //Chip has multiple clock sources, critical to understand for low power modes. This WDT uses the main system clock
+
+    void kick(float timeToReset) {
+        LPC_WDT->WDCLKSEL = 0x1;                
+        uint32_t clk = SystemCoreClock / 16;    
+        LPC_WDT->WDTC = timeToReset * (float)clk;
+        LPC_WDT->WDMOD = 0x3;                  
+        kick();
+    }
+    void kick() {
+        LPC_WDT->WDFEED = 0xAA;
+        LPC_WDT->WDFEED = 0x55;
+    }
+};
+
+//--------------------------------------
+/*Insert in code
+Watchdog wdt; //Create object
+
+
+
+byte lockUpCounter = 0; //Simulate a lockup, use a byte because ti consumes less memory
+
+
+if (lockUpCounter > 100){ //Simulated lockup
+    while(1);
+    }
+lockUpCounter++;
+
+wdt.kick; //Reset WDT
+
+//------------------------------------
+// Assembly stuff
+
+//Attach file
+//extern "C" int my_asm(int value);
+//my_asm(value);
+//----------------
+//Thisw goes in separate ASM file
+
+*/
\ No newline at end of file