Kevin Braun
Watchdog timer for the LPC4088
Diff: Watchdog.cpp
- Revision:
- 0:fc62d045ca0c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Watchdog.cpp Fri Dec 20 19:42:32 2013 +0000
@@ -0,0 +1,15 @@
+#include "mbed.h"
+#include "Watchdog.h"
+
+void Watchdog::kick(int WDTseconds) {
+ if(WDTseconds < 1) WDTseconds = 1; //minimum watchdog time is 1 sec
+ if(WDTseconds > 134) WDTseconds = 134; //maximum watchdog time is 134 sec
+ LPC_WDT->TC = 125000 * WDTseconds; //125000 * 8uS = 1.0 second tics
+ LPC_WDT->MOD = 0x3; //enable and restart watchdog
+ Watchdog::kick();
+}
+
+void Watchdog::kick() {
+ LPC_WDT->FEED = 0xaa; //kick sequence into FEED register
+ LPC_WDT->FEED = 0x55;
+}