define.h

经过测试成功的PDIUSBD12与Mega8的连接代码

#include <iom8v.h>
#include <macros.h>
#define USB_COMMAND_ADD           1
#define USB_DATA_ADD              0

//USB芯片连接引脚
#define USB_DATA                  PORTB

#define D12INT 2
#define D12A0  3
#define D12RD  4
#define D12WR  5
#define D12RESET 6

#define ENDPOINT_NUMBER           2
#define MAX_CONTROL_DATA_SIZE     16

#define setbit(x,y) x|=(1<<y)
#define clrbit(x,y) x&=(~(1<<y))
#define getbit(x,y) x&(1<<y)

//控制传输时保存数据
CONTROL_DATA_BUFF Control_Data;

//缓冲
unsigned char buffer[64];

//交换数据时用的指针
unsigned char *pData;

unsigned char idle;     //空闲状态
unsigned char protocol; //当前协议

//高低字节交换

#define SWAP16(x)  ((((unsigned int)(x))<<8)|(((unsigned int)(x))>>8))

//取一个整数的低字节 
#define LSB(x) ((unsigned char)(x))

//取一个整数的高字节
#define MSB(x) ((unsigned char)(((unsigned int)(x))>>8))                               

//字符串描述符所用的语言种类 
const unsigned char LANGUAGE_ID[4]={0x04,0x03,0x09,0x04};                   

//设备序列号										
const unsigned char device_serial_number[]=
{22,STRING_DESCRIPTOR,'2',0,'0',0,'0',0,'7',0,'-',0,'0',0,'3',0,'-',0,'2',0,'3',0};

//厂商字符串
const unsigned char ManufacturerString[80]=
{80,STRING_DESCRIPTOR,0x35,0x75,0x11,0x81,0x08,0x57,0x08,0x57,0x84,0x76,0xB6,0x5B,
 0x53,0x5F,'-',0x00,'-',0x00,'-',0x00,'-',0x00,'@',0,0x20,0x00,'H',0,'t',0,'t',0,
 'p',0,':',0,'/',0,'/',0,'C',0,'o',0,'m',0,'p',0,'u',0,'t',0,'e',0,'r',0,'0',0,
 '0',0,'.',0,'2',0,'1',0,'i',0,'c',0,'.',0,'o',0,'r',0,'g',0};

//产品字符串
const unsigned char ProducterString[80]=
{80,STRING_DESCRIPTOR,0x35,0x75,0x11,0x81,0x08,0x57,0x08,0x57,0x5A,0x50,0x84,0x76,
 'U',0,'S',0,'B',0,0x20,0x9F,0x07,0x68,'@',0,0x20,0x00,'H',0,'t',0,'t',0,
 'p',0,':',0,'/',0,'/',0,'C',0,'o',0,'m',0,'p',0,'u',0,'t',0,'e',0,'r',0,'0',0,
 '0',0,'.',0,'2',0,'1',0,'i',0,'c',0,'.',0,'o',0,'r',0,'g',0};


const DEVICE_DESCRIPTOR_STRUCT device_descriptor=     //设备描述符
{
 sizeof(DEVICE_DESCRIPTOR_STRUCT),                   //设备描述符的字节数大小
 DEVICE_DESCRIPTOR,	                                 //设备描述符类型编号
 0x1001,                                             //USB版本号
 0x00,                                               //USB分配的设备类代码
 0x00,                                               //USB分配的子类代码
 0x00,                                               //USB分配的设备协议代码
 0x10,                                               //端点0的最大包大小
 0x3412,                                             //厂商编号VID，这里只是作为测试用，请使用自己的VID
 0x7956,                                             //产品编号PID，这里只是作为测试用，请使用自己的PID
 0x0100,                                             //设备出厂编号
 0x01,                                               //设备厂商字符串的索引
 0x02,                                               //描述产品字符串的索引
 0x03,                                               //描述设备序列号字符串的索引
 0x01                                                //可能的配置数量
};

//定义配置，接口，端点等描述符结构体，因为它们是随配置描述符一起返回的
typedef struct _CON_INT_ENDP_DESCRIPTOR_STRUCT
{
 CONFIGURATION_DESCRIPTOR_STRUCT configuration_descriptor;
 INTERFACE_DESCRIPTOR_STRUCT  interface_descriptor;
 HID_DESCRIPTOR_STRUCT hid_descriptor;
 ENDPOINT_DESCRIPTOR_STRUCT  endpoint_descriptor[ENDPOINT_NUMBER];
}CON_INT_ENDP_DESCRIPTOR_STRUCT;

const CON_INT_ENDP_DESCRIPTOR_STRUCT con_int_endp_descriptor=
{
//configuration_descriptor                                          //配置描述符
{
 sizeof(CONFIGURATION_DESCRIPTOR_STRUCT),                           //配置描述符的字节数大小
 CONFIGURATION_DESCRIPTOR,                                          //配置描述符类型编号
 SWAP16(sizeof(CON_INT_ENDP_DESCRIPTOR_STRUCT)),
 0x01,                                                            //只包含一个接口
 0x01,                                                            //该配置的编号
 0x00,                                                            //iConfiguration字段
 0xA0,                                                            //采用总线供电，支持远程唤醒
 0xC8                                                            //从总线获取最大电流400mA
},
//interface_descritor                                             //接口描述符
{
 sizeof(INTERFACE_DESCRIPTOR_STRUCT),                             //接口描述符的字节数大小
 INTERFACE_DESCRIPTOR,                                            //接口描述符类型编号
 0x00,                                                            //接口编号为0
 0x00,                                                            //该接口描述符的编号
 ENDPOINT_NUMBER,                                                 //非0端点数量为2，只使用端点主端点输入和输出
 0x03,                                                            //人机接口设备（HID）类
 0x01,                                                            //使用的子类：支持BIOS根启动Boot的子类
 0x02,                                                            //使用的协议：鼠标
 0x00                                                             //接口描述符字符串索引
},
//hid_descriptor
{
 sizeof(HID_DESCRIPTOR_STRUCT),                                   //HID描述符的字节数大小
 HID_DESCRIPTOR,                                                  //HID描述符类型编号
 0x1001,                                                          //HID类协议版本号，为1.1
 0x21,                                                            //固件的国家地区代号，0x21为美国
 NUM_SUB_DESCRIPTORS,                                             //下级描述符的数量
 {
  {
   REPORT_DESCRIPTOR,                                             //下级描述符为报告描述符
   SWAP16(sizeof(MouseReportDescriptor))                          //下级描述符的长度
  }
 },
},
//endpoint_descriptor[]
{
 {                                                                //主端点输入描述
  sizeof(ENDPOINT_DESCRIPTOR_STRUCT),                             //端点描述符的字节数大小
  ENDPOINT_DESCRIPTOR,                                            //端点描述符类型编号
  MAIN_POINT_IN,                                                  //端点号，主输入端点
  ENDPOINT_TYPE_INTERRUPT,                                        //使用的传输类型：中断传输
  0x4000,                                                         //该端点支持的最大包尺寸，64字节
  0x0A                                                            //中断扫描时间：设置为10ms
 },
  
 {                                                                //主端点输出描述
  sizeof(ENDPOINT_DESCRIPTOR_STRUCT),                             //端点描述符的字节数大小
  ENDPOINT_DESCRIPTOR,                                            //端点描述符类型编号
  MAIN_POINT_OUT,                                                 //端点号，主输出端点
  ENDPOINT_TYPE_INTERRUPT,                                        //使用的传输类型：中断传输
  0x4000,                                                         //该端点支持的最大包尺寸，64字节
  0x0A                                                            //中断扫描时间：设置为10ms
 }
}
};

union                                          //程序标志位
{
uint16 Register;
struct 
{
 unsigned char bus_reset        :1;
 unsigned char suspend          :1;
 unsigned char remote_wakeup    :1;
 unsigned char int_isr          :1;
 unsigned char not_end          :1;
 unsigned char usb_idle         :1;
 unsigned char usb_busy         :1;
 unsigned char setup_packet_in  :1;
 unsigned char setup_packet_out :1;
 unsigned char set_addr         :1;
 unsigned char usb_endp0_in     :1;
 unsigned char usb_endp2_in     :1;
 unsigned char usb_endp2_out    :1;
}flags;
}usb_flags;

union                                         //中断寄存器
{
 unsigned char Register[2];
 struct 
  {
   unsigned char control_out_port  :1;
   unsigned char control_in_port   :1;
   unsigned char port_out_1        :1;
   unsigned char port_in_1         :1;
   unsigned char main_out_port     :1;
   unsigned char main_in_port      :1;
   unsigned char bus_reset         :1;
   unsigned char suspend_change    :1;
   unsigned char DMA_EOT           :1;
   unsigned char not_use           :7;
  }Interrupt;
}Interrupt_Register;


union                                    //端点最后处理状态
{
 unsigned char Register;
 struct
 {
  unsigned char successful          :1;
  unsigned char error_code          :4;
  unsigned char setup_packet        :1;
  unsigned char data_1              :1;
  unsigned char prestatus_not_read  :1;
 }Status;
}Last_Status;