hal4sys.c

ISP1181MCU_FW_Ver1.01.zip是基于飞利浦ISP1181的USB HOST开发板固件源代码

/*
   //*************************************************************************
   //
   //                  P H I L I P S   P R O P R I E T A R Y
   //
   //           COPYRIGHT (c)   1999 BY PHILIPS SINGAPORE.
   //                     --  ALL RIGHTS RESERVED  --
   //
   // File Name:	    Hal4sys.C
   // Created:          Oct 24, 2000
   // Modified:
   // Revision: 		1.01
   //
   //*************************************************************************
   */
#include <reg51.h>                /* special function register declarations   */
#include <intrins.h>

#include "BasicTyp.H"
#include "SysCnfg.h"
#include "Hal4Sys.h"
#include "mainloop.h"

/*
   //*************************************************************************
   // Public Data
   //*************************************************************************
*/


// Timer 0,  not ULONG!!!
USHORT Hal4Sys_ClockTicks = 0;
//ULONG Hal4Sys_ClockTicks = 0;

/*
   //*************************************************************************
   // Private Data
   //*************************************************************************
*/

/*
   //*************************************************************************
   // Functions
   //*************************************************************************
*/
//Jan10, WARNING 16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
/*void Hal4Sys_InitTimer0(void)
{
    //Init Timer0;
    TIMER0_MODE &= 0XF0;    // clear Timer 0 amd Keep Timer 1
	TIMER0_MODE |= 0X01;    // 16bit Timer
	TIMER0_PRIORITY = 0;    // 0 prority of Timer 0
	TIMER0_IRQ_ENABLE = 1;  // Enable IRQ Timer0

#ifdef WORK_AT_12MHZ
    TIMER0_LOW = 0x00;    // 1 MS interval @12MHz
	TIMER0_HIGH =TIMER0_AT12MHZ;
#endif

#ifdef WORK_AT_24MHZ
    TIMER0_LOW = 0x00;    // 1 MS interval @24MHz
    TIMER0_HIGH =TIMER0_AT24MHZ;
#endif

#ifdef WORK_AT_36MHZ
    TIMER0_LOW = 0x00;    // 1 MS interval @36MHz
    TIMER0_HIGH =TIMER0_AT36MHZ;
#endif

#ifdef WORK_AT_48MHZ
    TIMER0_LOW = 0x00;    // 1 MS interval @36MHz
    TIMER0_HIGH =TIMER0_AT48MHZ;
#endif

    TIMER0_START = 1;       // Start Timer 0
}
*/
void Hal4Sys_Wait4US(void)
{
#ifdef WORK_AT_12MHZ
    // @12MHz
    // LCALL = 2 MC
    // RET = 2MC
#endif

#ifdef WORK_AT_24MHZ
    // @24MHz
    _nop_();
    _nop_();
    _nop_();
    _nop_();
#endif

#ifdef WORK_AT_36MHZ
    // @36MHz
    _nop_();
    _nop_();
    _nop_();
    _nop_();

    _nop_();
    _nop_();
    _nop_();
    _nop_();
#endif

#ifdef WORK_AT_48MHZ
    // @48MHz
    _nop_();
    _nop_();
    _nop_();
    _nop_();

    _nop_();
    _nop_();
    _nop_();
    _nop_();

    _nop_();
    _nop_();
    _nop_();
    _nop_();
#endif
}
void Hal4Sys_WaitInUS(USHORT time)
{

#ifdef WORK_AT_12MHZ
    time >>= 3; //time = time * MACHINECYCLE_AT12MHZ/LOOP_MC;
#endif

#ifdef WORK_AT_24MHZ
    time >>= 2; //time = time * MACHINECYCLE_AT24MHZ/LOOP_MC;
#endif

#ifdef WORK_AT_36MHZ
    time >>= 1; //time = time * MACHINECYCLE_AT36MHZ/LOOP_MC;
#endif

#ifdef WORK_AT_48MHZ
    time >>= 1; //time = time * MACHINECYCLE_AT48MHZ/LOOP_MC;
#endif
    for( ; time != 0; time -- );
}

/*void Hal4Sys_WaitInMS(USHORT time)
{
    LowerIRQL();
    time += Hal4Sys_ClockTicks;
	while(Hal4Sys_ClockTicks != time );
}
*/
//Jan12, donot use time
void Hal4Sys_WaitInMS(USHORT time)
{
    for( ; time != 0; time -- )
		Hal4Sys_WaitInUS(1000);

}

void outportb(unsigned char port, unsigned char val)
{
#if 1
	unsigned char xdata *ext_address;
D13CS_N  = 0; //YAHOO
	ext_address=0xff00 + port;
	*ext_address = val;
D13CS_N  = 1;	//YAHOO
#endif
#if 0
	if(0 == port )
		*((UCHAR pdata *)D13_DATA_PORT) = val;
	else
		*((UCHAR pdata *)D13_COMMAND_PORT) = val;
#endif
}

unsigned char inportb(unsigned char port)
{
#if 1
	unsigned char c;
	unsigned char xdata *ext_address;
D13CS_N  = 0; //YAHOO
	ext_address=0xff00 + port;
	c = *ext_address ;
D13CS_N  = 1;	//YAHOO

	return c;
#endif
#if 0
	if(0 == port)
		return *((UCHAR pdata *)D13_DATA_PORT);
	else
		return *((UCHAR pdata *)D13_COMMAND_PORT);
#endif
}
/*
void Hal4Sys_D13CmdPortOutB( UCHAR val)
{
     *((UCHAR pdata *)D13_COMMAND_PORT) = val;
}

void Hal4Sys_D13DataPortOutB( UCHAR val)
{
     *((UCHAR pdata *)D13_DATA_PORT) = val;
}

UCHAR Hal4Sys_D13DataPortInB( void)
{
     return *((UCHAR pdata *)D13_DATA_PORT);
}
*/
void Hal4Sys_ResetD13(void)
{
//Feb21, reset  CPLD
	DMA_RST = 0;
    D13CS_N  = 1; // CS deactive!!!
    Hal4Sys_WaitInUS(400); // !!! CS is driven by weak pull-up resistor, 5V,10uA, 80pF needs 40uS
	D13_WAKEUP = 0;	// to remote-wakeup, pull D13_wakeup pin high, (not !!! direct conn reset pin, so no need to pull low here)
//	D13SUSPD = 0;

    D13RST_N = 0; // reset D13 , Holdup time > 2 uS.
    Hal4Sys_Wait4US();
    D13RST_N = 1;

	DMASTART = 0;

	D13CS_N  = 1;

    Hal4Sys_WaitInUS(5000);

	DMA_RST = 1;

}

void Hal4Sys_InitD13(void)
{
    Hal4Sys_ResetD13();
    D13INT_EDGE = 0;        // Level trigle for D13INT_N
    D13INT_PRIORITY = 0;    // 0 Priority Level of D13INT_N
    D13INT_ENABLE = 1;      // Enalbe External IRQ0 for D13INT_N
}