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# wdt_drv.h

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    00001 /*This file is prepared for Doxygen automatic documentation generation.*/
    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
    00035  * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
    00036  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    00037  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    00038  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    00039  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    00040  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
    00041  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00042  */
    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