isr.h

车载电子影音系统dvd播放系统原程序代码

/**************************************************************************

        (C)Copyright Cheertek Inc. 2002-2003,
           D300, all right reserved.

        Product : WinAV Firmware

        Date    : 1999.08.25.
        Author  : Cheertek (D300 TCH)
        Purpose : Interrupt Service Routine module
                  The moudle will receive internal Timer and external INT
        Sources : isr.h/ isr.c

****************************************************************************/

#ifndef __ISR_H__
#define __ISR_H__

//brian.276-4th, Watchdog control
#ifdef  SYSTEM_8051

// wyc1.11a, support watch dog timer
// Brian1.10-3, timed access macro for Watchdog
#define TIMED_ACCESS()\
        {\
            TA = 0xAA;\
            TA = 0x55;\
        }

sfr WTCON = 0xD8;   // Watchdog control register
sfr CKCON = 0x8E;   // Clock control register(bit 4, 5, 6) for Watchdog
sbit CLRWT = 0xD8;  // Bit 0 of WTCON: Clear Watchdog Timer
#endif


extern  DWORD           __dwTimeHang;           // in isr.c
extern  DWORD            __dwIER;               // record now IER Value
// wyc1.07a. remove this variale.
//extern  BYTE            __bKeyRepeat;           // in isr.c

// LLY2.37p, remove __bISRKeyRead, because we will split IR and F/W key to __bISRKey and __bFWKey
// So, it's un-necessary to reference it to decide input key source                 
//extern BYTE    __bISRKeyRead;
extern  BYTE IDATA      __bISRKey;              // The key value comes from Key-Scan or IR
extern  BIT             __btAutoConcealment;    // enable/ disable auto-concealment
//DVD_037RECOVER
extern  WORD    __wMonitorLackIFD;        // in isr.c
extern  WORD    __wMonitorIFDCount;        // in isr.c
extern  BYTE    __bResetRecover;
extern  BYTE    __bRecoverStage;
// wyc1.25, add two variable to force reset DSP.
// wyc2.31, remove this variable.
//extern  BYTE    __bNeedResetAudio;
extern  WORD    __wAudioResetCount;


// The four interrupts in 8031; T0, T1, INT0, INT1
void    ISR_Timer0 (void);
void    ISR_Timer1 (void);
// wyc.278-3, for 28C_MSDAV panel 臂п.
#ifdef  SUPPORT_AV_SYSTEM
#ifndef  SERIAL_DEBUG
void    ISR_Timer2(void);
// wyc.278-3, for 28C_MSDAV panel 臂п.
#endif // #ifdef  SUPPORT_AV_SYSTEM
#endif // #ifndef  SERIAL_DEBUG

void    ISR_INT0 (void);
void    ISR_INT1 (void);

// wyc1.10, modify value to 30 to avoid error entering recover stage.
#define MONITOR_PREPARERECOVER      30

// The recovery time is 100* 100mSec= 10 Seconds
#define MONITOR_COUNT       100         // the unit is 100 msec

// wyc1.07, redefine the entering error concealment condition.
#define MONITOR_HANGKICK    50

#define MONITOR_ENTERRECOVER    55


#define MONITOR_RESETCHIP   100 // 10 sec.

#define HANG_RESET_LIMIT     2   // 2*40 seconds
#endif  // __ISR_H__