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  * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
00030  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00031  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
00032  * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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00038  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00039  */
00040 
00041 #ifndef _WDT_DRV_H_
00042 #define _WDT_DRV_H_
00043 
00044 //_____ I N C L U D E S ____________________________________________________
00045 
00046 #ifdef __GNUC__
00047    #include <avr/io.h>
00048    #include <avr/wdt.h>
00049 #endif
00050 
00051 
00052 //_____ M A C R O S ________________________________________________________
00053 
00056 
00057 #define  Is_ext_reset()                ((MCUSR&(1<<EXTRF)) ? TRUE:FALSE)
00058 #define  Ack_ext_reset()               (MCUSR= ~(1<<EXTRF))
00059 #define  Is_POR_reset()                ((MCUSR&(1<<(MCUSR= ~(1<<PORF)))) ? TRUE:FALSE)
00060 #define  Ack_POR_reset()               (MCUSR= ~(1<<PORF))
00061 #define  Is_BOD_reset()                ((MCUSR&(1<<BORF)) ? TRUE:FALSE)
00062 #define  Ack_BOD_reset()               (MCUSR= ~(1<<BORF))
00063 #define  Is_wdt_reset()                ((MCUSR&(1<<WDRF)) ? TRUE:FALSE)
00064 #define  Ack_wdt_reset()               (MCUSR= ~(1<<WDRF))
00065         
00066 #define  Wdt_ack_interrupt()           (WDTCSR = (U8)(1<<WDIF))
00067 #define  Is_wdt_interrupt()            (WDTCSR&(1<<WDIF) ? TRUE:FALSE)
00068 #define  Is_not_wdt_interrupt()        (WDTCSR&(1<<WDIF) ? FALSE:TRUE)
00069 #define  Is_wdt_early_warning()        (WDTCKD&(1<<WDEWIF) ? TRUE:FALSE)
00070 #define  Is_not_wdt_early_warning()    (WDTCKD&(1<<WDEWIF) ? FALSE:TRUE)
00071 
00072 #define  WDTO_16MS   0
00073 #define  WDTO_32MS   1
00074 #define  WDTO_64MS   2
00075 #define  WDTO_125MS  3
00076 #define  WDTO_250MS  4
00077 #define  WDTO_500MS  5
00078 #define  WDTO_1S     6
00079 #define  WDTO_2S     7
00080 #define  WDTO_4S     8
00081 #define  WDTO_8S     9
00082 
00083 
00086 void wdtdrv_disable(void);
00087 
00088 
00093 void wdtdrv_enable( U8 timeout );
00094 
00095 
00100 void wdtdrv_interrupt_enable( U8 timeout );
00101 
00102 
00107 void wdtdrv_interrupt_reset_enable( U8 timeout );
00108 
00109 
00110 #define Soft_reset()             {asm("jmp 0000");}
00111 
00113 
00114 #endif  // _WDT_DRV_H_
00115 

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