isr.c

周立功dp1581usb2.0实验仪

//***********************************************************************
//									     								                  *
//                P H I L I P S   P R O P R I E T A R Y          		   *  
//                                                                      *
//          COPYRIGHT (c)   1999 BY PHILIPS SINGAPORE (APIC).    		   *
//                    --  ALL RIGHTS RESERVED  --                 		*	
//                                                                      *
// 	File Name	:       Kernel.c                                      *
// 	Author		:       Albert Goh					 					      *
// 	Created		:      	3 March 2000                               	*
//                  	                                                   *
//***********************************************************************
//***********************************************************************
//                                                                      *
// Kernel.c is the control centre for this evaluation firmware. It will *
// control where should the firmware branch through via the selection 	*
// of the UART port of the 8051. if not via the UART, it will be from 	*
// the selection of the code defintion                                  *
//                                                                      *
//***********************************************************************
//***********************************************************************
//                                                                      *
//  Module History														            *
//  **************														            *
//																		                  *
//  Date   	Version			Author				Changes					      *  
//  ====	=======			======				=======					         *
//  030300	  0.1 			Albert				Created    				      *  
//                                                                      *
//                                                                      *
//***********************************************************************
//***********************************************************************
//*																		               *
//*	                     Include Files Definition						   *
//*																		               *
//***********************************************************************

#include "standard.h"
#include "Kernel.h"
#include "D14.h"

extern KERNEL Kernel_Flag;
extern D14_CNTRL_REG xdata *D14_Cntrl_Ptr;
extern volatile D14_CNTRL_REG	xdata	D14_Cntrl_Reg;

extern DMA_INT_FLAG DMA_Int_Flag;
extern USB_INT_FLAG USB_Int_Flag;
extern void Init_D14(void);
extern UC ATAPI_State;
extern DRIVE_CONFIG	Drive_Setup;
extern void Set_USB(void);
extern ULI bytecount;
extern UI PIO_Count;

//***********************************************************************
//*																		               *
//*	                     Variable Definition 							      *
//*																		               *
//***********************************************************************


UI	idata	Data;
ULI USB_Interrupt;
UI 	DMA_Interrupt;
UC 	timecouter=0;

//***********************************************************************
//*																		               *
//*	                     Routine Definition								   *
//*																		               *
//***********************************************************************

void Int_2(void) interrupt 2 using 0
{
}

void Int_3(void) interrupt 3 using 0
{

	TH1=60;
	TL1=80;
	timecouter++;
}

void Int_4(void) interrupt 4 using 0
{
}

void Int_5(void) interrupt 5 using 0
{
}

//***********************************************************************
//*										    							               *
//*	Routine 	: Int_Timer0                                      		   *
//*	Input		: Timer 0 overflow  									            *
//*	Output		: Set time up flag                    					   *
//*	Function	: To set the time up flag                   			      *
//*																		               *
//***********************************************************************

void Int_Timer0(void) interrupt 1 using 0
{
	
	Kernel_Flag.BITS.Timer_Expired = 1;
}

//***********************************************************************
//*										    							               *
//*	Routine 	:  Int Ext 0                                       		*
//*	Input		:  External Interrupt from ISP1581                       *
//*	Output	:  None                                 					   *
//*	Function	:  To read and keep a copy of the interrupt source of    *
//*				   ISP1581														      *
//***********************************************************************

void Int_Ext_0(void) interrupt 0 using 1
{
	
	//read in USB interrupt register and keep a copy
	//         USB_Interrupt = D14_Cntrl_Reg.D14_INT.VALUE;
	//         USB_Int_Flag.VALUE |= USB_Interrupt;
	
	//读取ISP1581中断寄存器
	USB_Int_Flag.VALUE |= D14_Cntrl_Reg.D14_INT.VALUE;
	//回写ISP1581中断寄存器
	D14_Cntrl_Reg.D14_INT.VALUE = USB_Int_Flag.VALUE;

	if (USB_Int_Flag.BITS.EP1TX)
		USB_Int_Flag.BITS.EP1TX = 0;

	//总线复位处理	
	if(USB_Int_Flag.BITS.RESET)
	{
		//清除总线复位中断位		
		USB_Int_Flag.BITS.RESET = 0;
		//设置总线复位标志
		Kernel_Flag.BITS.Bus_Reset = 1;

		PIO_Count = 64;
		
		//切换到全速模式
      	HS_FS_LED = FULL_SPEED_LED;
		Kernel_Flag.BITS.HS_FS_State = FULL_SPEED;
		//初始化ISP1581
		Init_D14();
		//设置softconnect
		D14_Cntrl_Reg.D14_MODE.BITS.SOFTCT = 1;		
	}
	
}