From 7cc358b56b02a121e90e1c5a80ccc91d328487b0 Mon Sep 17 00:00:00 2001
From: Bernhard Kubicek <kubicek@gmx.at>
Date: Sun, 6 Nov 2011 14:58:12 +0100
Subject: [PATCH] wrong file location
---
Marlin/watchdog.cpp | 48 +++++++++++++++++++++++++++++++++++++++++++++
Marlin/watchdog.h | 10 ++++++++++
2 files changed, 58 insertions(+)
create mode 100644 Marlin/watchdog.cpp
create mode 100644 Marlin/watchdog.h
diff --git a/Marlin/watchdog.cpp b/Marlin/watchdog.cpp
new file mode 100644
index 00000000000..0adf9cc7d7c
--- /dev/null
+++ b/Marlin/watchdog.cpp
@@ -0,0 +1,48 @@
+#ifdef USE_WATCHDOG
+
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+
+volatile uint8_t timeout_seconds=0;
+
+void(* ctrlaltdelete) (void) = 0; //does not work on my atmega2560
+
+//Watchdog timer interrupt, called if main program blocks >1sec
+ISR(WDT_vect)
+{
+ if(timeout_seconds++ >= WATCHDOG_TIMEOUT)
+ {
+
+ #ifdef RESET_MANUAL
+ LCD_MESSAGE("Please Reset!");
+ ECHOLN("echo_: Something is wrong, please turn off the printer.");
+ #else
+ LCD_MESSAGE("Timeout, resetting!");
+ #endif
+ //disable watchdog, it will survife reboot.
+ WDTCSR |= (1<<WDCE) | (1<<WDE);
+ WDTCSR = 0;
+ #ifdef RESET_MANUAL
+ kill(); //kill blocks
+ while(1); //wait for user or serial reset
+ #else
+ ctrlaltdelete();
+ #endif
+ }
+}
+
+/// intialise watch dog with a 1 sec interrupt time
+void wd_init()
+{
+ WDTCSR = (1<<WDCE )|(1<<WDE ); //allow changes
+ WDTCSR = (1<<WDIF)|(1<<WDIE)| (1<<WDCE )|(1<<WDE )| (1<<WDP2 )|(1<<WDP1)|(0<<WDP0);
+}
+
+/// reset watchdog. MUST be called every 1s after init or avr will reset.
+void wd_reset()
+{
+ wdt_reset();
+ timeout_seconds=0; //reset counter for resets
+}
+
+#endif /* USE_WATCHDOG */
diff --git a/Marlin/watchdog.h b/Marlin/watchdog.h
new file mode 100644
index 00000000000..2577bc13843
--- /dev/null
+++ b/Marlin/watchdog.h
@@ -0,0 +1,10 @@
+#ifndef __WATCHDOGH
+#define __WATCHDOGH
+#ifdef
+/// intialise watch dog with a 1 sec interrupt time
+void wd_init();
+/// pad the dog/reset watchdog. MUST be called at least every second after the first wd_init or avr will go into emergency procedures..
+void wd_reset();
+
+
+#endif