Bernhard Kubicek
13 years ago
2 changed files with 58 additions and 0 deletions
@ -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 */ |
@ -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 |
Loading…
Reference in new issue