DEFINE SERVICE_TEXT,space=code,align=01H
	SEGMENT SERVICE_TEXT
	FILE	"C:\USB\930CODE\ALTXFA~1\SERVICE.C"
	MODE=BINARY
;    1	/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
;    2	   (C) Copyright Intel Corp., 1996
;    3	
;    4	   File: service.c
;    5	
;    6	   Universal Serial Bus 930 Test firmware
;    7	
;    8	   Revision History
;    9	   ---------------------------------------------
;   10	    0.1     05-27-96          Abdul Rahman Ismail
;   11	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
;   12	
;   13	#include <8x930ax.h>
;   14	#include "defs.h"
;   15	
;   16	#include "service.h"
;   17	
;   18	#define EPINDEX (*((volatile sfr char *)0xf1))
;   19	
;   20	//	external functions.
;   21	extern	void FillEP1Fifo( void );
;   22	extern	void FillEP2Fifo( void );
;   23	
;   24	// external variables
;   25	extern	BYTE	gbEP1Running;
;   26	extern	BYTE	gbEP2Running;
;   27	
;   28	// function prototypes
;   29	reentrant void ServiceEndPoints( void );
;   30	reentrant void CheckEPRunning( void );
;   31	reentrant void CheckEPOverflow( void );
;   32	
;   33	/*-------------------------------------------------------------------
;   34	Function name     : ServiceEndPoints
;   35	Brief Description : Called whenever a new SOF is recd. Updates the
;   36					  : TX fifos on all endpoints running.    
;   37	-------------------------------------------------------------------*/
;   38	
;   39	reentrant void ServiceEndPoints( void )
;   40	{
_ServiceEndPoints:
;   41		if (gbEP1Running == TRUE)
	MOV	R15,00:_gbEP1Running
	CMP	R15,#01H
	JMPNE	L_2
;   42			FillEP1Fifo();
	LCALL	_FillEP1Fifo
L_2:
;   43	
;   44		if (gbEP2Running == TRUE)
	MOV	R15,00:_gbEP2Running
	CMP	R15,#01H
	JMPNE	L_3
;   45			FillEP2Fifo();
	LCALL	_FillEP2Fifo
;   46	}
L_3:
	RET	
;

;**************************** _ServiceEndPoints ***************************

;Name                         Addr/Register   Size   Type

;_FillEP2Fifo                        IMPORT  -----   function
;_gbEP2Running                       IMPORT      1   variable
;_FillEP1Fifo                        IMPORT  -----   function
;_gbEP1Running                       IMPORT      1   variable
;

;Local Frame Size: 4 (bytes)
;

.FRAME ServiceEndPoints,_$_ServiceEndPoints,pdata
	.FCALL	FillEP1Fifo
	.FCALL	FillEP2Fifo
	SEGMENT SERVICE_TEXT
;   47	
;   48	/*-------------------------------------------------------------------
;   49	Function name     : CheckEPRunning
;   50	Brief Description : Checks whether an endpoint has started sending data
;   51	                    to the host. If so then sets the gbEP1Running to
;   52	                    true.
;   53	--------------------------------------------------------------------*/
;   54	
;   55	reentrant void CheckEPRunning( void )
;   56	{
_CheckEPRunning:
;   57		if (gbEP1Running == FALSE)
	MOV	R15,00:_gbEP1Running
	CMP	R15,#00H
	JMPNE	L_8
;   58	    {
;   59	      EPINDEX = 1;
	MOV	R15,#01H
	MOV	0f1H,R15
;   60	    	if ((TXFLG & GET_FIFO_BITS) != FIFO_FULL)
	MOV	R15,0f5H
	MOVS	WR14,R15
	ANL	WR14,#0c0H
	CMP	WR14,#0c0H
	JMPE	L_8
;   61	       		gbEP1Running = TRUE;
	MOV	R15,#01H
	MOV	00:_gbEP1Running,R15
;   62	    }
L_8:
;   63	
;   64		if (gbEP2Running == FALSE)
	MOV	R15,00:_gbEP2Running
	CMP	R15,#00H
	JMPNE	L_9
;   65	    {
;   66	      EPINDEX = 2;
	MOV	R15,#02H
	MOV	0f1H,R15
;   67	    	if ((TXFLG & GET_FIFO_BITS) != FIFO_FULL)
	MOV	R15,0f5H
	MOVS	WR14,R15
	ANL	WR14,#0c0H
	CMP	WR14,#0c0H
	JMPE	L_9
;   68	       		gbEP2Running = TRUE;
	MOV	R15,#01H
	MOV	00:_gbEP2Running,R15
;   69	    }
;   70	}
L_9:
	RET	
;

;**************************** _CheckEPRunning ***************************

;Name                         Addr/Register   Size   Type

;_gbEP2Running                       IMPORT      1   variable
;_gbEP1Running                       IMPORT      1   variable
;

;Local Frame Size: 4 (bytes)
;

.FRAME CheckEPRunning,_$_CheckEPRunning,pdata
	SEGMENT SERVICE_TEXT
;   71	
;   72	/*-------------------------------------------------------------------
;   73	Function name     : CheckEPOverflow
;   74	Brief Description : Continuously called to check whether an overflow
;   75						has occured on any endpoint. If it has then the 
;   76	                    endpoint is reset, and new data primed into the
;   77	                    fifos.
;   78	--------------------------------------------------------------------*/
;   79	
;   80	reentrant void CheckEPOverflow( void )
;   81	{
_CheckEPOverflow:
;   82	  EPINDEX = 1;
	MOV	R15,#01H
	MOV	0f1H,R15
;   83		if (TXOVF == TRUE)
	JMPNB	S:0f5H.0,L_11
;   84	    {
;   85	    	gbEP1Running = FALSE;			// Assume that the ep has stopped running
	MOV	R15,#00H
	MOV	00:_gbEP1Running,R15
;   86	
;   87			TXCLR = TRUE;					// Clear the fifo.
	SETB	S:0f4H.7
;   88	
;   89			/* Fill the fifo with a known pattern */
;   90		    asm( "mov	R8, #00h" );
mov	R8, #00h
;   91		    FillEP1Fifo();
	LCALL	_FillEP1Fifo
;   92		    asm( "mov	R8, #01h" );
mov	R8, #01h
;   93		    FillEP1Fifo();
	LCALL	_FillEP1Fifo
;   94	    }
L_11:
;   95	
;   96	  EPINDEX = 2;
	MOV	R15,#02H
	MOV	0f1H,R15
;   97		if (TXOVF == TRUE )
	JMPNB	S:0f5H.0,L_13
;   98	    {
;   99	    	gbEP2Running = FALSE;
	MOV	R15,#00H
	MOV	00:_gbEP2Running,R15
;  100	
;  101		    TXCLR = TRUE;
	SETB	S:0f4H.7
;  102		    asm( "mov	R8, #00h" ); 
mov	R8, #00h
;  103		    FillEP2Fifo();
	LCALL	_FillEP2Fifo
;  104	
;  105	    	asm( "mov	R8, #01h" ); 
mov	R8, #01h
;  106		    FillEP2Fifo();
	LCALL	_FillEP2Fifo
;  107	    }
;  108	}
L_13:
	RET	
;

;**************************** _CheckEPOverflow ***************************

;Name                         Addr/Register   Size   Type

;_FillEP2Fifo                        IMPORT  -----   function
;_gbEP2Running                       IMPORT      1   variable
;_FillEP1Fifo                        IMPORT  -----   function
;_gbEP1Running                       IMPORT      1   variable
;

;Local Frame Size: 4 (bytes)
;

.FRAME CheckEPOverflow,_$_CheckEPOverflow,pdata
	.FCALL	FillEP1Fifo
	.FCALL	FillEP2Fifo
	XREF _gbEP2Running:pdata
	XREF _gbEP1Running:pdata
	XREF _FillEP2Fifo:code
	XREF _FillEP1Fifo:code
	XDEF _CheckEPOverflow
	XDEF _CheckEPRunning
	XDEF _ServiceEndPoints
	END