Bernhard Kubicek
13 years ago
2 changed files with 58 additions and 0 deletions
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#ifdef USE_WATCHDOG |
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#include <avr/wdt.h> |
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#include <avr/interrupt.h> |
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volatile uint8_t timeout_seconds=0; |
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void(* ctrlaltdelete) (void) = 0; //does not work on my atmega2560
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//Watchdog timer interrupt, called if main program blocks >1sec
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ISR(WDT_vect) |
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{ |
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if(timeout_seconds++ >= WATCHDOG_TIMEOUT) |
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{ |
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#ifdef RESET_MANUAL |
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LCD_MESSAGE("Please Reset!"); |
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ECHOLN("echo_: Something is wrong, please turn off the printer."); |
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#else |
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LCD_MESSAGE("Timeout, resetting!"); |
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#endif |
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//disable watchdog, it will survife reboot.
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WDTCSR |= (1<<WDCE) | (1<<WDE); |
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WDTCSR = 0; |
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#ifdef RESET_MANUAL |
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kill(); //kill blocks
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while(1); //wait for user or serial reset
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#else |
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ctrlaltdelete(); |
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#endif |
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} |
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} |
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/// intialise watch dog with a 1 sec interrupt time
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void wd_init() |
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{ |
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WDTCSR = (1<<WDCE )|(1<<WDE ); //allow changes
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WDTCSR = (1<<WDIF)|(1<<WDIE)| (1<<WDCE )|(1<<WDE )| (1<<WDP2 )|(1<<WDP1)|(0<<WDP0); |
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} |
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/// reset watchdog. MUST be called every 1s after init or avr will reset.
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void wd_reset() |
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{ |
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wdt_reset(); |
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timeout_seconds=0; //reset counter for resets
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} |
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#endif /* USE_WATCHDOG */ |
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#ifndef __WATCHDOGH |
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#define __WATCHDOGH |
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#ifdef |
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/// intialise watch dog with a 1 sec interrupt time
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void wd_init(); |
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/// pad the dog/reset watchdog. MUST be called at least every second after the first wd_init or avr will go into emergency procedures..
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void wd_reset(); |
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#endif |
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