AMI MI987, Руководство пользователя

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APPENDIX
60 MI987 User’s Manual
D. Watchdog Timer Configuration
The WDT is used to generate a variety of output signals after a user
programmable count. The WDT is suitable for use in the prevention of
system lock-up, such as when software becomes trapped in a deadlock.
Under these sorts of circumstances, the timer will count to zero and the
selected outputs will be driven. Under normal circumstance, the user will
restart the WDT at regular intervals before the timer counts to zero.
SAMPLE CODE:
File of the NCT5523D.H
//---------------------------------------------------------------------------
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
//---------------------------------------------------------------------------
#ifndef __NCT5523D_H
#define __NCT5523D_H
1
//---------------------------------------------------------------------------
#define
NCT5523D_INDEX_PORT (NCT5523D_BASE)
#define NCT5523D_DATA_PORT (NCT5521)
//---------------------------------------------------------------------------
#define
NCT5523D_REG_LD 0x07
//---------------------------------------------------------------------------
#define NCT5523D_UNLOCK
0x87
#define NCT5523D_LOCK 0xAA
//---------------------------------------------------------------------------
unsigned int Init_NCT5523D(void);
void Set_NCT5523D_LD( unsigned char);
void Set_NCT5523D_Reg( unsigned char, unsigned char);
unsigned char Get_NCT5523D_Reg( unsigned char);
//---------------------------------------------------------------------------
#endif //__NCT5523D_H