Kevin Braun
Watchdog Timer for the K64F. User can set timeout value from 1 to 356 seconds with a one second resolution.
Dependents: Telliskivi2_2014 mbed-IBooth-ETH TwitterReader
Diff: Watchdog.cpp
- Revision:
- 0:2a46d40a176e
- Child:
- 1:70e99b5845fd
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Watchdog.cpp Mon Oct 20 23:40:26 2014 +0000
@@ -0,0 +1,31 @@
+#include "mbed.h"
+#include "Watchdog.h"
+
+void Watchdog::kick(int toVal) {
+ const uint32_t K64FWDONESEC = 0x00B80000; //approx 1 second delay
+ if((toVal < 1) || (toVal > 356)) toVal = 356;
+ WDOG_UNLOCK = 0xC520;
+ WDOG_UNLOCK = 0xD928;
+ uint32_t wdogCntl = K64FWDONESEC * toVal;
+ WDOG_TOVALH = wdogCntl >> 16;
+ WDOG_TOVALL = wdogCntl & 0xFFFF;
+ EnableWDOG();
+}
+
+void Watchdog::kick() {
+ WDOG_REFRESH = 0xA602;
+ WDOG_REFRESH = 0xB480;
+}
+
+void Watchdog::DisableWDOG() {
+ WDOG_UNLOCK = 0xC520;
+ WDOG_UNLOCK = 0xD928;
+ WDOG_STCTRLH &= 0xFFFE;
+}
+
+void Watchdog::EnableWDOG() {
+ WDOG_UNLOCK = 0xC520;
+ WDOG_UNLOCK = 0xD928;
+ WDOG_STCTRLH |= 0x0001;
+ kick();
+}
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