d12_usb.h

89S51单片机通过PDIUSBD12的USB接口芯片实现与上位机通讯的固件源码

/**************************************************************************
  
                    PHILIPS PDIUSBD12 FIRMWARE
  
             		COPYRIGHT (c)   2005 BY JJJ.
                       		--  ALL RIGHTS RESERVED  --
  
   File Name:       D12_USB.h
   Author:          Jiang Jian Jun
   Created:         2005/4/3
   Modified:		NO
   Revision: 		1.0
  
***************************************************************************/
#ifndef __D12_USB_H_REVISION_FIRST__
#define __D12_USB_H_REVISION_FIRST__

#include <REGX51.H>
sbit SUSPEND = P3^5;

#define D12_INT_ENDP0OUT		0x0001			//中断寄存器位定义
#define D12_INT_ENDP0IN			0x0002
#define D12_INT_ENDP1OUT		0x0004
#define D12_INT_ENDP1IN			0x0008
#define D12_INT_ENDP2OUT		0x0010
#define D12_INT_ENDP2IN			0x0020
#define D12_INT_BUSRESET		0x0040
#define D12_INT_SUSPENDCHANGE	0x0080
#define D12_INT_EOT				0x0100

#define D12_SETUPPACKET 					0x20		//读最后处理状态寄存器的设置信息包0010,0000b
#define EP0_PACKET_SIZE 				  	  16		//p0最大16byte
#define USB_ENDPOINT_DIRECTION_MASK 		0x80		//设备请求类型,传输方向 D7 1000,0000b
#define USB_REQUEST_TYPE_MASK 				0x30		//bmRequest的设置
#define USB_REQUEST_MASK 					0x0f
#define USB_STANDARD_REQUEST 				0x00		//5,6位的定义
#define USB_VENDOR_REQUEST 					0x20
#define USB_DEVICE_DESCRIPTOR_TYPE 			0x01		//描述符类型 设备描述符01h,配置描述符02,接口描述符04,端点描述符05
#define USB_CONFIGURATION_DESCRIPTOR_TYPE 	0x02
#define CONFIG_DESCRIPTOR_LENGTH 		  0x002E		//配置描述符总长度

//**************************************************************************
//Port And Macros And Structure And Union Definitions
#define SWAP(x)   ((((x) & 0x00FF) << 8) | (((x) >> 8) & 0x00FF))	//交换高低8位
#define MSB(x)    (((x) >> 8) & 0x00FF)								//取数据高8位
#define LSB(x)    ((x) & 0x00FF)									//取数据低8位

typedef union _Event_Flags_							//定义USB事件标志数据类型
{
	struct _Bit_Flags_
	{
		unsigned char Timer               	: 1;	//定时器益出事件标记
		unsigned char BusReset           	: 1;	//USB总线复位标志
		unsigned char Suspend             	: 1;	//USB器件挂起标志
		unsigned char SetupPacket  	  		: 1;	//收到SETUP包标志
		unsigned char RemoteWakeup		   	: 1;	//远程唤醒标志
		unsigned char InISR			      	: 1;	//USB中断服务标志
		unsigned char ControlState			: 2;	//控制端点处理状态
													//0:IDEL     空闲状态
													//1:TRANSMIT 数据发送状态
													//2:RECEIVE  数据接受状态
		
		unsigned char Configuration			: 1;	//配置标志 (0:未配置;1:已配置)
		unsigned char Port1RxDone			: 1;	//端口1收到数据标志
		unsigned char Port2RxDone			: 1; 	//端口2收到数据标志
		unsigned char Port1TxFull      		: 1;	//端口1输出缓冲区满标志
		unsigned char Port2TxFull			: 1; 	//端口2输出缓冲区满标志
		
		unsigned char Reserve				: 3;	//保留,未使用
	}Bits;
	unsigned short int Value;
}EVENT_FLAGS;										//事件标志数据类型

typedef struct _DEVICE_REQUEST_
{
	unsigned char bmRequestType;					//请求类型
	unsigned char bRequest;							//USB请求
	unsigned short wValue;							//USB请求值
	unsigned short wIndex;							//USB请求索引
	unsigned short wLength;							//记数长度
}DEVICE_REQUEST;

#define MAX_CONTROLDATA_SIZE	8
typedef struct _control_xfer
{
	DEVICE_REQUEST DeviceRequest;					//USB请求结构体
	unsigned short wLength;							//传输数据的总字节数
	unsigned short wCount;							//传输字节数统计
	unsigned char * pData;							//传输数据指针
	unsigned char dataBuffer[MAX_CONTROLDATA_SIZE];	//请求的数据
}CONTROL_XFER;

static EVENT_FLAGS EventFlags;			//定义为全局变量,用于与主程序的通信
static CONTROL_XFER ControlData;		//保存SETUP包请求类型和请求数据
unsigned char idata EndPoint1Buffer[4];	//控制端点缓存
unsigned char idata EndPoint2Buffer[64];//主端点缓存
//**************************************************************************
//硬件提取层,多路地址/数据总线方式读写
void Outportb(unsigned int Addr, unsigned char Data)
{
	*((unsigned char xdata *) Addr) = Data;
}

unsigned char Inportb(unsigned int Addr)
{
	return *((unsigned char xdata *) Addr);
}

void USB_Delay1ms(unsigned int count)
{
	unsigned int i,j;
	for(i=0;i<count;i++)
	for(j=0;j<120;j++);
}
//**************************************************************************
#define D12_DATA 		0
#define D12_COMMAND 	1
//PDIUSBD12命令接口函数
void D12_SetMode(unsigned char bConfig,unsigned char bClkDiv)
{
	Outportb(D12_COMMAND,0xF3);
	Outportb(D12_DATA,bConfig);
	Outportb(D12_DATA,bClkDiv);
}
//设置端点
void D12_SetEndpointStatus(unsigned char bEndp,unsigned char bStalled)
{
	Outportb(D12_COMMAND,0x40+bEndp);
	Outportb(D12_DATA,bStalled);
}
//应答!!!!!
void D12_AcknowledgeEndpoint(unsigned char endp)
{
	Outportb(D12_COMMAND,endp);
	Outportb(D12_COMMAND,0xF1);
	if(endp==0)
		Outportb(D12_COMMAND,0xF2);
}
//设置地址使能
void D12_SetAddressEnable(unsigned char bAddress,unsigned char bEnable)
{
	Outportb(D12_COMMAND,0xd0);
	if(bEnable) bAddress |= 0x80;
	Outportb(D12_DATA,bAddress);
}
//设置端点使能
void D12_SetEndpointEnable(unsigned char bEnable)
{
	Outportb(D12_COMMAND,0xD8);
	if(bEnable)
		Outportb(D12_DATA,1);
	else
		Outportb(D12_DATA,0);
}
//读中断寄存器
unsigned short D12_ReadInterruptRegister(void)
{
	unsigned char b1;
	unsigned int j;
	Outportb(D12_COMMAND,0xF4);
	b1=Inportb(D12_DATA);
	j=Inportb(D12_DATA);
	j<<=8;
	j+=b1;
	return j;
}
//读取端点状态
unsigned char D12_ReadEndpointStatus(unsigned char EndPoint)	
{
	unsigned char BackValue;

	if(EventFlags.Bits.InISR == 0)
		EA = 0;

	Outportb(D12_COMMAND, 0x80 + EndPoint);//读取端点状态
	BackValue = Inportb(D12_DATA);

	if(EventFlags.Bits.InISR == 0)
		EA = 1;

	return BackValue;
}
//读端点最后处理状态
unsigned char D12_ReadLastTransactionStatus(unsigned char bEndp)
{
	Outportb(D12_COMMAND,0x40+bEndp);
	return Inportb(D12_DATA);
}
//读端口
unsigned char D12_ReadEndpoint(unsigned char endp,unsigned char len,unsigned char *buf)
{
	unsigned char i,j;
	Outportb(D12_COMMAND,endp);
	if((Inportb(D12_DATA)&0xff)==0)//"  define D12_FULLEMPTY as 0xFF  by newer
		return 0;
	Outportb(D12_COMMAND,0x80+endp);
	i=Inportb(D12_DATA);
	i=i&0x60;


	Outportb(D12_COMMAND,0xF0);
	j=Inportb(D12_DATA);
	j=Inportb(D12_DATA);
	if(j>len)
		j=len;
	for(i=0;i<j;i++)
		*(buf+i)=Inportb(D12_DATA);
	Outportb(D12_COMMAND,0xF2);
	return j;
}

unsigned char D12_ReadEndpoint_Int(unsigned char endp,unsigned char len,unsigned char *buf)
{
	unsigned char i,j;
	Outportb(D12_COMMAND,endp);
	if((Inportb(D12_DATA)&0xff)==0)//"  define D12_FULLEMPTY as 0xFF  by newer
		return 0;
	Outportb(D12_COMMAND,0x80+endp);
	i=Inportb(D12_DATA);
	i=i&0x60;


	Outportb(D12_COMMAND,0xF0);
	j=Inportb(D12_DATA);
	j=Inportb(D12_DATA);
	if(j>len)
		j=len;
	for(i=0;i<j;i++)
		*(buf+i)=Inportb(D12_DATA);
	Outportb(D12_COMMAND,0xF2);
	return j;
}

unsigned char D12_WriteEndpoint(unsigned char endp,unsigned char len,unsigned char * buf)
{
	unsigned char i;
	Outportb(D12_COMMAND,endp);
	Inportb(D12_DATA);
	Outportb(D12_COMMAND,0xF0);
	Outportb(D12_DATA,0);
	Outportb(D12_DATA,len);
	for(i=0;i<len;i++)
		Outportb(D12_DATA,*(buf+i));
	Outportb(D12_COMMAND,0xFA);
	return len;
}

unsigned char D12_WriteEndpoint_Int(unsigned char endp,unsigned char len,unsigned char * buf)
{
	unsigned char i;
	Outportb(D12_COMMAND,endp);
	Inportb(D12_DATA);
	Outportb(D12_COMMAND,0xF0);
	Outportb(D12_DATA,0);
	Outportb(D12_DATA,len);
	for(i=0;i<len;i++)
		Outportb(D12_DATA,*(buf+i));
	Outportb(D12_COMMAND,0xFA);
	return len;
}

void DisconnectUSB(void)
{
	D12_SetMode(0x02,0x03);//SET TO ONE? by newer
}

void InitialUSBInt(void);
void ConnectUSB(void)
{
	EventFlags.Value = 0x0000;
	InitialUSBInt();
	D12_SetMode(0x16,0x03);
}

void ReconnectUSB(void)
{
	SUSPEND = 0;
	DisconnectUSB();
	USB_Delay1ms(1000);
	ConnectUSB();
}

//**************************************************************************
//中断服务程序
void InitialUSBInt(void)
{
	IT1=0;	//低电平中断触发
	EX1=1;	//允许外部中断
	PX1=0;	//优先级低
	EA =1;
}

void EP0_Out(void)
{
	unsigned char ep_last,i;
	ep_last=D12_ReadLastTransactionStatus(0);//interrupt symbol
	if(ep_last&D12_SETUPPACKET)
	{ //recieved SETUP packet  ---by newer
		ControlData.wLength=0;
		ControlData.wCount=0;
		if(D12_ReadEndpoint_Int(0,sizeof(ControlData.DeviceRequest),(unsigned char *)(&(ControlData.DeviceRequest)))!=sizeof(DEVICE_REQUEST))
		{