Jonathan Wheadon / ELEC351_GroupA

Temp Publish

Diff: WatchDog.cpp

Revision:
0:4ccd12e1d789
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WatchDog.cpp	Tue Jan 08 16:21:39 2019 +0000
@@ -0,0 +1,28 @@
+#include "WatchDog.hpp"
+#include "mbed.h"
+
+/* Enables Watchdog Timer -> T(period, s)= (1/32kHz)(4)(2^(IWDG_PR[2:0]))(IWDG_RLR[11:0]+1))*/
+void WatchDog (int prescaler, int reload) 
+{ 				
+	IWDG->KR 	|= 0x0000CCCC; 	// enable IWDG (watchdog)
+	IWDG->KR 	|= 0x00005555; 	// enable register access to PR & RLR
+	IWDG->PR 	|= prescaler; 	// Set prescaler 
+	IWDG->RLR 	|= reload;		// set Reload 				
+}
+
+/* Reset WatchDog timer */
+void Kick (void) 
+{ 
+	//Reset Watchdog counter
+	IWDG->KR |= 0x0000AAAA;
+}
+
+void WatchDogThread(void)
+{	
+	while(1)
+	{
+		Kick();
+		Thread::wait(200);	
+	}	
+}
+