Reza Mashayekhi
/
WatchdogTimer
Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Diff: WatchdogTimer.cpp
- Revision:
- 0:dece639e483e
- Child:
- 1:7d0312e56c87
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WatchdogTimer.cpp Fri Feb 09 11:13:11 2018 +0000
@@ -0,0 +1,22 @@
+#include "mbed.h"
+#include "WatchdogTimer.h"
+/*
+WatchdogTimer::WatchdogTimer(float TimeInSecond): _kick(TimeInSecond){
+ _kick();
+}
+*/
+// "kick" or "feed" the dog - reset the watchdog timer
+// by writing this required bit pattern
+void WatchdogTimer::kick() {
+ LPC_WDT->WDFEED = 0xAA;
+ LPC_WDT->WDFEED = 0x55;
+}
+// Load timeout value in watchdog timer and enable
+void WatchdogTimer::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();
+}
+