Rob Dobson
Monitor for central heating system (e.g. 2zones+hw) Supports up to 15 temp probes (DS18B20/DS18S20) 3 valve monitors Gas pulse meter recording Use stand-alone or with nodeEnergyServer See http://robdobson.com/2015/09/central-heating-monitor
Dependencies: EthernetInterfacePlusHostname NTPClient Onewire RdWebServer SDFileSystem-RTOS mbed-rtos mbed-src
Diff: Watchdog.h
- Revision:
- 12:a52996515063
- Child:
- 19:0367cb46d003
diff -r 30182b9aa833 -r a52996515063 Watchdog.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Watchdog.h Sun Feb 22 22:08:37 2015 +0000
@@ -0,0 +1,35 @@
+#ifndef __WATCHDOG__H
+#define __WATCHDOG__H
+#include "mbed.h"
+
+// Simon's Watchdog code from
+// http://mbed.org/forum/mbed/topic/508/
+class Watchdog
+{
+ public:
+ // Load timeout value in watchdog timer and enable
+ void SetTimeoutSecs(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
+ Feed();
+ }
+ // "kick" or "feed" the dog - reset the watchdog timer
+ // by writing this required bit pattern
+ void Feed()
+ {
+ LPC_WDT->WDFEED = 0xAA;
+ LPC_WDT->WDFEED = 0x55;
+ }
+
+ bool WatchdogCausedRestart()
+ {
+ if ((LPC_WDT->WDMOD >> 2) & 1)
+ return true;
+ return false;
+ }
+};
+
+#endif