IBT Technologies MI979 Series, Руководство пользователя

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74 MI979 Series
User’s Manual
C. Watchdog Timer Configuration
The Watchdog Timer (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, you will need to restart the WDT at regular
intervals before the timer counts to zero.
1. Sample Code: The file NCT6116D.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 __NCT6116D_H
#define __NCT6116D_H 1
//---------------------------------------------------------------------------
#define NCT6116D_INDEX_PORT (NCT6116D_BASE)
#define NCT6116D_DATA_PORT (NCT6111)
//---------------------------------------------------------------------------
#define NCT6116D_REG_LD 0x07
//---------------------------------------------------------------------------
#define NCT6116D_UNLOCK 0x87
#define NCT6116D_LOCK 0xAA
//---------------------------------------------------------------------------
unsigned int Init_NCT6116D(void);
void Set_NCT6116D_LD( unsigned char);
void Set_NCT6116D_Reg( unsigned char, unsigned char);
unsigned char Get_NCT6116D_Reg( unsigned char);
//---------------------------------------------------------------------------
#endif //__NCT6116D_H