wdt_drv.h

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00013 
00014 /* Copyright (c) 2009 Atmel Corporation. All rights reserved.
00015  *
00016  * Redistribution and use in source and binary forms, with or without
00017  * modification, are permitted provided that the following conditions are met:
00018  *
00019  * 1. Redistributions of source code must retain the above copyright notice,
00020  * this list of conditions and the following disclaimer.
00021  *
00022  * 2. Redistributions in binary form must reproduce the above copyright notice,
00023  * this list of conditions and the following disclaimer in the documentation
00024  * and/or other materials provided with the distribution.
00025  *
00026  * 3. The name of Atmel may not be used to endorse or promote products derived
00027  * from this software without specific prior written permission.
00028  *
00029  * 4. This software may only be redistributed and used in connection with an Atmel
00030  * AVR product.
00031  *
00032  * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
00033  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00034  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
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00043 
00044 #ifndef _WDT_DRV_H_
00045 #define _WDT_DRV_H_
00046 
00047 //_____ I N C L U D E S ____________________________________________________
00048 
00049 #ifdef __GNUC__
00050    #include <avr/io.h>
00051    #include <avr/wdt.h>
00052 #endif
00053 
00054 
00055 //_____ M A C R O S ________________________________________________________
00056 
00059 
00060 #define  Is_ext_reset()                ((MCUSR&(1<<EXTRF)) ? TRUE:FALSE)
00061 #define  Ack_ext_reset()               (MCUSR= ~(1<<EXTRF))
00062 #define  Is_POR_reset()                ((MCUSR&(1<<(MCUSR= ~(1<<PORF)))) ? TRUE:FALSE)
00063 #define  Ack_POR_reset()               (MCUSR= ~(1<<PORF))
00064 #define  Is_BOD_reset()                ((MCUSR&(1<<BORF)) ? TRUE:FALSE)
00065 #define  Ack_BOD_reset()               (MCUSR= ~(1<<BORF))
00066 #define  Is_wdt_reset()                ((MCUSR&(1<<WDRF)) ? TRUE:FALSE)
00067 #define  Ack_wdt_reset()               (MCUSR= ~(1<<WDRF))
00068         
00069 #define  Wdt_ack_interrupt()           (WDTCSR = (U8)(1<<WDIF))
00070 #define  Is_wdt_interrupt()            (WDTCSR&(1<<WDIF) ? TRUE:FALSE)
00071 #define  Is_not_wdt_interrupt()        (WDTCSR&(1<<WDIF) ? FALSE:TRUE)
00072 #define  Is_wdt_early_warning()        (WDTCKD&(1<<WDEWIF) ? TRUE:FALSE)
00073 #define  Is_not_wdt_early_warning()    (WDTCKD&(1<<WDEWIF) ? FALSE:TRUE)
00074 
00075 #define  WDTO_16MS   0
00076 #define  WDTO_32MS   1
00077 #define  WDTO_64MS   2
00078 #define  WDTO_125MS  3
00079 #define  WDTO_250MS  4
00080 #define  WDTO_500MS  5
00081 #define  WDTO_1S     6
00082 #define  WDTO_2S     7
00083 #define  WDTO_4S     8
00084 #define  WDTO_8S     9
00085 
00086 
00089 void wdtdrv_disable(void);
00090 
00091 
00096 void wdtdrv_enable( U8 timeout );
00097 
00098 
00103 void wdtdrv_interrupt_enable( U8 timeout );
00104 
00105 
00110 void wdtdrv_interrupt_reset_enable( U8 timeout );
00111 
00112 
00113 #define Soft_reset()             {asm("jmp 0000");}
00114 
00116 
00117 #endif  // _WDT_DRV_H_
00118 

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