kernel.c

嵌入式系统中一些外围设备驱动示例程序集

/****************************************Copyright (c)**************************************************
**                               广州周立功单片机发展有限公司
**                                     研    究    所
**                                 http://www.zlgmcu.com
**--------------当前版本修订------------------------------------------------------------------------------
** 修改人: 刘英斌
** 日　期:2003-03-13
** 描　述:ISP1581 V1.0
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/

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

//***********************************************************************
//*																		               *
//*	                 External routine Definition					 	      *
//*																		               *
//***********************************************************************

extern Init_Main();
extern USB_Debug_Mode();
extern DMA_Debug_Mode();
extern USB_INT_FLAG USB_Int_Flag;
extern DMA_INT_FLAG DMA_Int_Flag;
extern USB_DEVICE USB_Device;
extern volatile D14_CNTRL_REG	xdata	D14_Cntrl_Reg;
extern void Check_Busy(void);
extern void Init_D14(void);
extern void Init_Endpoint(void);
extern void Init_Device(void);
extern void Get_PIDVID(void);
extern unsigned int read_endpoint(unsigned char endp,unsigned int len,unsigned char *buf);
extern unsigned int write_endpoint(unsigned char endp,unsigned int len,unsigned char *buf);


extern UC VID[2],PID[2];
extern UC	idata Endpt_FIFO[MAX_BUF];
extern Set_USB(void);
extern TIMER	Timer;

//***********************************************************************
//*																		               *
//*	                 Prototype routine Definition					 	   *
//*																		               *
//***********************************************************************

void Start_mSEC_Timer(Data);
void Start_SEC_Timer(Data);

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

UI	Temp;
KERNEL Kernel_Flag;


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

//***********************************************************************
//*										    							               *
//*	Routine 	:  Main                                          		   *
//*	Input		:  None            									            *
//*	Output   :	None                                  					   *
//*	Function	:	main loop                                			      *
//*																		               *
//***********************************************************************

void Main(void)
{
	unsigned int a;
	unsigned char b[16];
	
	//Initialization routine
	//初始化子程序
	Init_Main();			
	
	//enable device and reset the device address
	D14_Cntrl_Reg.D14_MODE.BITS.SOFTCT = 1;	
	
	do
	{
		
		
		//USB routine
		USB_Debug_Mode();
		
		//Generic DMA routine
		DMA_Debug_Mode();	

		if (USB_Int_Flag.BITS.EP1RX)
		{
			USB_Int_Flag.BITS.EP1RX = 0;
			a=read_endpoint(0x02,8,b);
			b[0]=0;
			b[1]=0x12;
			b[2]=0x12;
			b[3]=0x12;
		}
		a=write_endpoint(0x03,4,b);


		
	}
	while(1);
	
}



//***********************************************************************
//*										    							               *
//*	Routine 	: Start_mSEC_Timer(Delay)                          		*
//*	Input		: Delay in milli second									         *  
//*	Output		: Start timer operation               					   *
//*	Function	: To start the timeout operation based on the delay i/p  *
//*																		               *
//***********************************************************************

void Start_mSEC_Timer(Data)
{
	
   	
	do
	{
		
		//calculate timer value
		Temp = Timer.mSEC_Scale;		
		Temp = 0xffff - Temp;
		
		ET0 = 1;
		
		//calculate timer value
		//initialize timer 0 counter
		Temp >>= 8;
		TH0 = (UC) Temp;
		Temp = Timer.mSEC_Scale;		
		Temp = 0xffff - Temp;
		TL0 = (UC) Temp;
		
		//start timer count
		TR0 = 1;							
		
		Kernel_Flag.BITS.Timer_Expired = 0;
		while(!Kernel_Flag.BITS.Timer_Expired);
		Kernel_Flag.BITS.Timer_Expired = 0;
		
		
		//stop timer
		TR0 = 0;							
		ET0 = 0;
		
		Data--;
	}
	while(Data != 0);
}