main.c

里面是D12与c51的接口程序

#include<reg52.h>

#include <stdio.h>
#include <string.h>

#include "hard.h"
#include "D12.h"
#include "main.h"
#include "USB.h"
#include "mydev.h"
//#include "myusb100.h"

//*************************************************************************
// USB 标准设备请求入口地址表
//*************************************************************************

code void (*StandardDeviceRequest[])(void) =
{
	get_status,
	clear_feature,
	reserved,
	set_feature,
	reserved,
	set_address,
	get_descriptor,
	reserved,
	get_configuration,
	set_configuration,
	get_interface,
	set_interface,
	reserved,
	reserved,
	reserved,
	reserved
};
//*************************************************************************
// 厂商请求入口地址表
//*************************************************************************
code void (*VendorDeviceRequest[])(void) =
{
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	read_write_register,
	reserved,
	reserved,
	reserved
};

/////////////////////////////////////////////////////////////////

extern EPPFLAGS bEPPflags;

CONTROL_XFER ControlData;

//unsigned char idata GenEpBuf[EP1_PACKET_SIZE];
extern int iEp1InLength ;

extern unsigned char idata GenEpBuf[];

unsigned char fa;

int loopback = 0;
int ledon = 0;

///////////////////////////////////////////////////////////////
/*void init_timer0(void)
{

	TMOD &= 0XF0;                    // clear Timer 0   
	TMOD  |= 0X1;
	TL0 = 0X0;                   // value set by user    
	TH0 = 0X0;                  //value set by user  
	ET0 = 1;        //IE.1
	TR0 = 1;                // TCON.4 start timer  
	PT0 = 1;

	EA = 1;
} */
 void init_serial(void)
{
    SCON= 0x50;       //SCON: serail mode 1, 8-bit UART, enable ucvr 
    TMOD= 0x20;       //TMOD: timer 1, mode 2, 8-bit reload 
    PCON= 0x00;       //SMOD=0; 
    TH1 = 0xFD;       //Baud:9600  fosc=11.0592MHz 
     
    TR1 = 1;          // timer 1 run 
   
   	IE  = 0x90;       //Enable Serial Interrupt
}

void init_port()
{

	P0 = 0xFF;
	P1 = 0xFF;
	P2 = 0xFF;
	P3 = 0xFF;
}
 void init_special_interrupts(void)
{

	IT0 = 0;
	EX0 = 1;
	PX0 = 0;

}

//////////////////////////////////////////////////////////
void stall_ep0(void)
{
	D12_SetEndpointStatus(0, 1);
	D12_SetEndpointStatus(1, 1);

}

void single_transmit(unsigned char * buf, unsigned char len)
{
	if( len <= EP0_PACKET_SIZE) {
		D12_WriteEndpoint(1, buf, len);
	}
}
void code_transmit(unsigned char code * pRomData, unsigned short len)
{
	ControlData.wCount = 0;
	if(ControlData.wLength > len)
		ControlData.wLength = len;

	ControlData.pData = pRomData;
	if( ControlData.wLength >= EP0_PACKET_SIZE) {
		D12_WriteEndpoint(1, ControlData.pData, EP0_PACKET_SIZE);
		ControlData.wCount += EP0_PACKET_SIZE;

		DISABLE;
		bEPPflags.bits.control_state = USB_TRANSMIT;
		ENABLE;
	}
	else {
		D12_WriteEndpoint(1, pRomData, ControlData.wLength);
		ControlData.wCount += ControlData.wLength;
		DISABLE;
		bEPPflags.bits.control_state = USB_IDLE;
		ENABLE;
	}
}


void init_unconfig(void)
{
//	unsigned char i;

	D12_SetEndpointEnable(0);	/* Disable all endpoints but EPP0. */
}

void init_config(void)
{
	D12_SetEndpointEnable(1);	/* Enable  generic/iso endpoints. */
}

void delay(unsigned int i)
{
	while((i--));
}
//////////////////////////////////////////////////////////
 void disconnect_USB(void)
{
	// Initialize D12 configuration
	D12_SetMode(D12_NOLAZYCLOCK|D12_CLOCKRUNNING, D12_SETTOONE | D12_CLOCK_12M);
}

void connect_USB(void)
{
	// reset event flags
	DISABLE;
	bEPPflags.value = 0;
	ENABLE;

	// V2.1 enable normal+sof interrupt
	D12_SetDMA(D12_ENDP4INTENABLE | D12_ENDP5INTENABLE);

	// Initialize D12 configuration
	D12_SetMode(D12_NOLAZYCLOCK|D12_CLOCKRUNNING|D12_SOFTCONNECT, D12_SETTOONE | D12_CLOCK_12M);
}
void reconnect_USB(void)
{

	disconnect_USB();
	delay(5000);
	connect_USB();

}

//////////////////////////////////////////////////////////
void control_handler()
{
	unsigned char type, req;

	type = ControlData.DeviceRequest.bmRequestType & USB_REQUEST_TYPE_MASK;
	
	req = ControlData.DeviceRequest.bRequest & USB_REQUEST_MASK;


	if (type == USB_STANDARD_REQUEST)
		(*StandardDeviceRequest[req])();	  //标准设备请求处理

	else if (type == USB_VENDOR_REQUEST)
		(*VendorDeviceRequest[req])();		 //厂商请求处理
	else
		stall_ep0();
}

void Check_led(void)
{
		char i;
		
		if(bEPPflags.bits.ep1_rxdone) 
		{
			DISABLE;
			bEPPflags.bits.ep1_rxdone = 0;
			ENABLE;    

			if(iEp1InLength == 10)
			{
				if((GenEpBuf[0] == 'l') && (GenEpBuf[1] == 'o') && (GenEpBuf[2] == 'o') &&
					(GenEpBuf[3] == 'p') && (GenEpBuf[4] == 'b') && (GenEpBuf[5] == 'a') &&
					(GenEpBuf[6] == 'c') && (GenEpBuf[7] == 'k') && (GenEpBuf[8] == 'e') &&
					(GenEpBuf[9] == 'n'))
				{
					loopback = 1;
					return ;
				}
				else if((GenEpBuf[0] == 'l') && (GenEpBuf[1] == 'o') && (GenEpBuf[2] == 'o') &&
					(GenEpBuf[3] == 'p') && (GenEpBuf[4] == 'b') && (GenEpBuf[5] == 'a') &&
					(GenEpBuf[6] == 'c') && (GenEpBuf[7] == 'k') && (GenEpBuf[8] == 'd') &&
					(GenEpBuf[9] == 'e'))
				{
					loopback = 0;
					
					return ;
				}
			}
			
			
			
			if(iEp1InLength == 5)
			{
				if((GenEpBuf[0] == 'l') && (GenEpBuf[1] == 'e') && (GenEpBuf[2] == 'd') &&
					(GenEpBuf[3] == 'e') && (GenEpBuf[4] == 'n'))
				{
					ledon = 1;
					GenEpBuf[0]=0x00;
					return ;
				}
				else if((GenEpBuf[0] == 'l') && (GenEpBuf[1] == 'e') && (GenEpBuf[2] == 'd') &&
					(GenEpBuf[3] == 'd') && (GenEpBuf[4] == 'e'))
				{
					ledon = 0;
					P1=0xff;//关灯
					return ;
				}
				

			}
			if(ledon)
			{
				P1=~GenEpBuf[0];
				return ;
		
			}

			
			
			for(i=0;i<iEp1InLength;i++)
			{
				DISABLE;
				SBUF=GenEpBuf[i];
				while(TI==0);
				TI=0;
				ENABLE;
				return ;
			}

			

		}
			

}

void main(void)
{


	init_port();

	init_serial();

//	init_timer0();

	init_special_interrupts();

	connect_USB();
	
	DISABLE;

	delay(5000);

	reconnect_USB();
	ENABLE;	
/* Main program loop */
	
	while( TRUE )
	{
	

		if (bEPPflags.bits.setup_packet)
			{
	
				DISABLE;
				bEPPflags.bits.setup_packet = 0;
				ENABLE;
				control_handler();

			} // if setup_packet
		 
		if (bEPPflags.bits.configuration)

				Check_led();
			  
			  
		if (bEPPflags.bits.serial&loopback)
		 {
				DISABLE;
				bEPPflags.bits.serial=0;
			
				
				D12_WriteEndpoint(3,&fa,1);

				ENABLE;
							
		}
	  
			  
			  
			  

	}

}
//D12中断服务
void usb_isr(void) interrupt 0 
{
	DISABLE;
	fn_usb_isr();//调用D12中断服务子程序
	ENABLE;
}

void serial(void) interrupt 4  
{
	DISABLE;
	if(RI)
	{	
		RI=0;
		TI=0;

		bEPPflags.bits.serial=1;

		fa=SBUF;
		SBUF=fa;
		while(TI==0);
		TI=0;
		
	}
	ENABLE;

	return;	
}