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; .\isr.SRC generated from: isr.c
; COMPILER INVOKED BY:
;        C:\Keil\C51\BIN\C51.EXE isr.c DEBUG OBJECTEXTEND SRC(.\isr.SRC)

$NOMOD51

NAME	ISR

P0	DATA	080H
P1	DATA	090H
P2	DATA	0A0H
P3	DATA	0B0H
T0	BIT	0B0H.4
AC	BIT	0D0H.6
MCU_D12CS	BIT	090H.6
T1	BIT	0B0H.5
EA	BIT	0A8H.7
IE	DATA	0A8H
RD	BIT	0B0H.7
ES	BIT	0A8H.4
IP	DATA	0B8H
RI	BIT	098H.0
INT0	BIT	0B0H.2
CY	BIT	0D0H.7
TI	BIT	098H.1
INT1	BIT	0B0H.3
PS	BIT	0B8H.4
SP	DATA	081H
OV	BIT	0D0H.2
WR	BIT	0B0H.6
SBUF	DATA	099H
PCON	DATA	087H
SCON	DATA	098H
TMOD	DATA	089H
TCON	DATA	088H
MCU_A0	BIT	090H.4
D12SUSPD	BIT	0B0H.3
IE0	BIT	088H.1
IE1	BIT	088H.3
B	DATA	0F0H
ACC	DATA	0E0H
ET0	BIT	0A8H.1
ET1	BIT	0A8H.3
TF0	BIT	088H.5
TF1	BIT	088H.7
MCU_LED0	BIT	090H.2
RB8	BIT	098H.2
TH0	DATA	08CH
MCU_LED1	BIT	090H.3
EX0	BIT	0A8H.0
IT0	BIT	088H.0
TH1	DATA	08DH
TB8	BIT	098H.3
EX1	BIT	0A8H.2
IT1	BIT	088H.2
P	BIT	0D0H.0
SM0	BIT	098H.7
TL0	DATA	08AH
SM1	BIT	098H.6
TL1	DATA	08BH
SM2	BIT	098H.5
PT0	BIT	0B8H.1
PT1	BIT	0B8H.3
RS0	BIT	0D0H.3
TR0	BIT	088H.4
RS1	BIT	0D0H.4
TR1	BIT	088H.6
PX0	BIT	0B8H.0
PX1	BIT	0B8H.2
DPH	DATA	083H
DPL	DATA	082H
REN	BIT	098H.4
MCU_D12RST	BIT	090H.7
MCU_SWM0	BIT	090H.0
RXD	BIT	0B0H.0
MCU_SWM1	BIT	090H.1
TXD	BIT	0B0H.1
F0	BIT	0D0H.5
PSW	DATA	0D0H
?PR?timer_isr?ISR    SEGMENT CODE 
?PR?usb_isr?ISR      SEGMENT CODE 
?PR?fn_usb_isr?ISR   SEGMENT CODE 
?DT?fn_usb_isr?ISR   SEGMENT DATA OVERLAYABLE 
?PR?bus_reset?ISR    SEGMENT CODE 
?PR?ProcessCtrlOutEP?ISR                 SEGMENT CODE 
?PR?ProcessCtrlInEP?ISR                  SEGMENT CODE 
?DT?ProcessCtrlInEP?ISR                  SEGMENT DATA OVERLAYABLE 
?C_INITSEG           SEGMENT CODE 
?DT?ISR              SEGMENT DATA 
?ID?ISR              SEGMENT IDATA 
	EXTRN	CODE (stall_ep0)
	EXTRN	CODE (_D12_ReadLastTransactionStatus)
	EXTRN	CODE (_D12_AcknowledgeEndpoint)
	EXTRN	CODE (D12_ReadInterruptRegister)
	EXTRN	CODE (_D12_ReadEndpoint)
	EXTRN	DATA (?_D12_ReadEndpoint?BYTE)
	EXTRN	CODE (_D12_WriteEndpoint)
	EXTRN	DATA (?_D12_WriteEndpoint?BYTE)
	EXTRN	DATA (bEPPflags)
	EXTRN	DATA (ControlData)
	PUBLIC	GenEpBuf
	PUBLIC	ClockTicks
	PUBLIC	ProcessCtrlInEP
	PUBLIC	ProcessCtrlOutEP
	PUBLIC	bus_reset
	PUBLIC	fn_usb_isr
	PUBLIC	usb_isr
	PUBLIC	timer_isr

	RSEG  ?DT?fn_usb_isr?ISR
?fn_usb_isr?BYTE:
	ORG  2
        len?240:   DS   1
	ORG  0
       i_st?241:   DS   2

	RSEG  ?DT?ProcessCtrlInEP?ISR
?ProcessCtrlInEP?BYTE:
          i?544:   DS   2

	RSEG  ?DT?ISR
     ClockTicks:   DS   4

	RSEG  ?ID?ISR
       GenEpBuf:   DS   16

	RSEG  ?C_INITSEG
	DB	004H
	DB	ClockTicks
	DB	000H,000H,000H,000H	; long

; /*
; //*************************************************************************
; //
; //                  BASBA   P R O P R I E T A R Y
; //
; //           COPYRIGHT (c)   2003 BY BASBA USA.
; //                     --  ALL RIGHTS RESERVED  --
; //
; // File Name:	isr.c
; // Purpose:		Handles the interrupt generated by PDIUSBD12. It retrieve
; //				data from PDIUSBD12's internal FIFO  to CPU memory, and
; //				setup proper event flags to inform mainloop for processing
; // Author:		Shuming Yu
; // Created:		10 May 2003
; // Modified:
; // Revision:		1.0
; //
; //*************************************************************************
; */
; 
; #include <reg51.h>                /* special function register declarations   */
; 
; #include "d12hal.h"
; #include "cmds.h"
; #include "mainloop.h"
; #include "usbStruc.h"
; 
; #define INTERRUPT_INT0_Overflow 0
; #define INTERRUPT_Timer_0_Overflow 1
; 
; void bus_reset(void);
; 
; void ProcessCtrlInEP(void);
; void ProcessCtrlOutEP(void);
; 
; //*************************************************************************
; //  Public static data
; //*************************************************************************
; 
; extern EPPFLAGS bEPPflags; /* USB event flags */
; extern CONTROL_XFER ControlData; /* Control endpoint TX/RX buffers */
; 
; /* ISR static vars */
; //unsigned char idata GenEpBuf[EP1_PACKET_SIZE];
; unsigned char idata GenEpBuf[EP0_PACKET_SIZE];
; //IO_REQUEST idata ioRequest;
; 
; unsigned long ClockTicks = 0;
; 
CSEG	AT	0000BH
	LJMP	timer_isr

; timer_isr() interrupt INTERRUPT_Timer_0_Overflow

	RSEG  ?PR?timer_isr?ISR
	USING	0
timer_isr:
	PUSH 	ACC
	PUSH 	PSW
	MOV  	PSW,#00H
	PUSH 	AR7
	USING	0
			; SOURCE LINE # 50
; {
; 	DISABLE;
			; SOURCE LINE # 52
	CLR  	EA
; 	ClockTicks++;
			; SOURCE LINE # 53
	MOV  	A,ClockTicks+03H
	ADD  	A,#01H
	MOV  	ClockTicks+03H,A
	CLR  	A
	ADDC 	A,ClockTicks+02H
	MOV  	ClockTicks+02H,A
	CLR  	A
	ADDC 	A,ClockTicks+01H
	MOV  	ClockTicks+01H,A
	CLR  	A
	ADDC 	A,ClockTicks
	MOV  	ClockTicks,A
; 	bEPPflags.bits.timer = 1;
			; SOURCE LINE # 54
	MOV  	R7,bEPPflags
	MOV  	A,R7
	ORL  	A,#01H
	MOV  	bEPPflags,A
; 	ENABLE;
			; SOURCE LINE # 55
	SETB 	EA
; }
			; SOURCE LINE # 56
	POP  	AR7
	POP  	PSW
	POP  	ACC
	RETI 	
; END OF timer_isr

CSEG	AT	00003H
	LJMP	usb_isr

; 
; usb_isr() interrupt INTERRUPT_INT0_Overflow

	RSEG  ?PR?usb_isr?ISR
	USING	0
usb_isr:
	PUSH 	ACC
	PUSH 	B
	PUSH 	DPH
	PUSH 	DPL
	PUSH 	PSW
	MOV  	PSW,#00H
	PUSH 	AR0
	PUSH 	AR1
	PUSH 	AR2
	PUSH 	AR3
	PUSH 	AR4
	PUSH 	AR5
	PUSH 	AR6
	PUSH 	AR7
	USING	0
			; SOURCE LINE # 58
; {
; 	DISABLE;
			; SOURCE LINE # 60
	CLR  	EA
; 	fn_usb_isr();
			; SOURCE LINE # 61
	LCALL	fn_usb_isr
; 	ENABLE;
			; SOURCE LINE # 62
	SETB 	EA
; }
			; SOURCE LINE # 63
	POP  	AR7
	POP  	AR6
	POP  	AR5
	POP  	AR4
	POP  	AR3
	POP  	AR2
	POP  	AR1
	POP  	AR0
	POP  	PSW
	POP  	DPL
	POP  	DPH
	POP  	B
	POP  	ACC
	RETI 	
; END OF usb_isr

; 
; /* Interrupt service subroutine */
; void fn_usb_isr()

	RSEG  ?PR?fn_usb_isr?ISR
fn_usb_isr:
	USING	0
			; SOURCE LINE # 66
; {
			; SOURCE LINE # 67
; 	unsigned int i_st;
; 
; 	bEPPflags.bits.in_isr = 1;
			; SOURCE LINE # 70
	MOV  	R7,bEPPflags
	MOV  	A,R7
	ORL  	A,#020H
	MOV  	bEPPflags,A
; 
; 	i_st = D12_ReadInterruptRegister();
			; SOURCE LINE # 72
	LCALL	D12_ReadInterruptRegister
	MOV  	i_st?241,R6
	MOV  	i_st?241+01H,R7
; 
; 	if(i_st != 0) {
			; SOURCE LINE # 74
	MOV  	A,i_st?241+01H
	ORL  	A,i_st?241
	JZ   	?C0003
; 		if(i_st & D12_INT_BUSRESET) {
			; SOURCE LINE # 75
	MOV  	A,i_st?241+01H
	JNB  	ACC.6,?C0004
; 			bus_reset();
			; SOURCE LINE # 76
	LCALL	bus_reset
; 			bEPPflags.bits.bus_reset = 1;
			; SOURCE LINE # 77
	MOV  	R7,bEPPflags
	MOV  	A,R7
	ORL  	A,#02H
	MOV  	bEPPflags,A
; 		}
			; SOURCE LINE # 78
?C0004:
; 		if(i_st & D12_INT_EOT)
			; SOURCE LINE # 79
?C0005:
; 			;
; 		if(i_st & D12_INT_SUSPENDCHANGE)
			; SOURCE LINE # 81
	MOV  	A,i_st?241+01H
	JNB  	ACC.7,?C0006
; 			bEPPflags.bits.suspend = 1;
			; SOURCE LINE # 82
	MOV  	R7,bEPPflags
	MOV  	A,R7
	ORL  	A,#04H
	MOV  	bEPPflags,A
?C0006:
; 
; 		if(i_st & D12_INT_ENDP0IN)
			; SOURCE LINE # 84
	MOV  	A,i_st?241+01H
	JNB  	ACC.1,?C0007
; 			/* Control Endpoint IN Interrupt */
; 			ProcessCtrlInEP();
			; SOURCE LINE # 86
	LCALL	ProcessCtrlInEP
?C0007:
; 		if(i_st & D12_INT_ENDP0OUT) 
			; SOURCE LINE # 87
	MOV  	A,i_st?241+01H
	JNB  	ACC.0,?C0008
; 			/* Control Endpoint OUT Interrupt */
; 			ProcessCtrlOutEP();
			; SOURCE LINE # 89
	LCALL	ProcessCtrlOutEP
?C0008:
; 		if(i_st & D12_INT_ENDP1IN) {
			; SOURCE LINE # 90
	MOV  	A,i_st?241+01H
	JNB  	ACC.3,?C0009
; 			/* Endpoint 1 IN Interrupt (generic input) */
; 			D12_ReadLastTransactionStatus(3); /* Clear interrupt flag */
			; SOURCE LINE # 92
	MOV  	R7,#03H
	LCALL	_D12_ReadLastTransactionStatus
; 			/* send data back to host */
; 			bEPPflags.bits.ep1_sxdone = 1;	//host request to send data
			; SOURCE LINE # 94
	MOV  	R7,bEPPflags+01H
	MOV  	A,R7
	ORL  	A,#08H
	MOV  	bEPPflags+01H,A
; 		}
			; SOURCE LINE # 95
?C0009:
; 		if(i_st & D12_INT_ENDP1OUT)
			; SOURCE LINE # 96
	MOV  	A,i_st?241+01H
	JNB  	ACC.2,?C0003
; 		{   /* Endpoint 1 OUT Interrupt (generic output) */
			; SOURCE LINE # 97
; 			unsigned char len;
; 
; 			D12_ReadLastTransactionStatus(2); /* Clear interrupt flag */
			; SOURCE LINE # 100
	MOV  	R7,#02H
	LCALL	_D12_ReadLastTransactionStatus
; 			len = D12_ReadEndpoint(2, GenEpBuf, sizeof(GenEpBuf));
			; SOURCE LINE # 101
	MOV  	R3,#00H
	MOV  	R2,#HIGH (GenEpBuf)
	MOV  	R1,#LOW (GenEpBuf)
	MOV  	?_D12_ReadEndpoint?BYTE+04H,#010H
	MOV  	R7,#02H
	LCALL	_D12_ReadEndpoint
	MOV  	len?240,R7
; 			if(len != 0)
			; SOURCE LINE # 102
	MOV  	A,len?240
	JZ   	?C0003
; 			    bEPPflags.bits.ep1_rxdone = 1;
			; SOURCE LINE # 103
	MOV  	R7,bEPPflags+01H
	MOV  	A,R7
	ORL  	A,#04H
	MOV  	bEPPflags+01H,A
; 		}
			; SOURCE LINE # 104
; 		//if(i_st & D12_INT_ENDP2IN)
; 		//	main_txdone();
; 		//if(i_st & D12_INT_ENDP2OUT)
; 		//	main_rxdone();
; 	}
			; SOURCE LINE # 109
?C0003:
; 
; 	bEPPflags.bits.in_isr = 0;
			; SOURCE LINE # 111
	MOV  	R7,bEPPflags
	MOV  	A,R7
	ANL  	A,#0DFH
	MOV  	bEPPflags,A
; }
			; SOURCE LINE # 112
	RET  	
; END OF fn_usb_isr
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