51单片机与USB芯片PDIUSBD12接口固件程序.doc

51单片机与USB芯片PDIUSBD12接口固件程序关键词： USB固件程序 此函数库可以直接使用PHILIPS的Demo驱动D12TEST以下只用了端点1进行控制传输，端点2的数据传输自己添加，没有使用DMA功能，为简单的固件程序/* 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 sbit SUSPEND = P35;#define D12_INT_ENDP0OUT0x0001/中断寄存器位定义#define D12_INT_ENDP0IN0x0002#define D12_INT_ENDP1OUT0x0004#define D12_INT_ENDP1IN0x0008#define D12_INT_ENDP2OUT0x0010#define D12_INT_ENDP2IN0x0020#define D12_INT_BUSRESET0x0040#define D12_INT_SUSPENDCHANGE0x0080#define D12_INT_EOT0x0100#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) & 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_SIZE8typedef struct _control_xferDEVICE_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 dataBufferMAX_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 EndPoint1Buffer4;/控制端点缓存unsigned char idata EndPoint2Buffer64;/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;icount;i+)for(j=0;j120;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);elseOutportb(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);jlen)j=len;for(i=0;ilen)j=len;for(i=0;ij;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;ilen;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;i16)/最大传16byteEventFlags.Bits.ControlState=0; /by newerD12_SetEndpointStatus(0,1);D12_SetEndpointStatus(1,1);elseEventFlags.Bits.ControlState=2;/by newerelse if(EventFlags.Bits.ControlState=2)i=D12_ReadEndpoint_Int(0,EP0_PACKET_SIZE,ControlData.dataBuffer+ControlData.wCount);ControlData.wCount+=i;if(i!=EP0_PACKET_SIZE|ControlData.wCount=ControlData.wLength)EventFlags.Bits.SetupPacket=1;EventFlags.Bits.ControlState=0;elseEventFlags.Bits.ControlState=0;void EP0_In(void)short i=ControlData.wLength-ControlData.wCount;D12_ReadLastTransactionStatus(1);if(EventFlags.Bits.ControlState!=1) return;if(i=EP0_PACKET_SIZE)D12_WriteEndpoint_Int(1,EP0_PACKET_SIZE,ControlData.pData+ControlData.wCount);ControlData.wCount+=EP0_PACKET_SIZE;EventFlags.Bits.ControlState=1;return;if(i!=0)D12_WriteEndpoint_Int(1,i,ControlData.pData+ControlData.wCount);ControlData.wCount+=i;EventFlags.Bits.ControlState=0;return;D12_WriteEndpoint_Int(1,0,0);EventFlags.Bits.ControlState=0;void EP1_Out(void)unsigned char Length;D12_ReadLastTransactionStatus(2); /* Clear interrupt flag */Length = D12_ReadEndpoint_Int(2, sizeof(EndPoint1Buffer),EndPoint1Buffer);if(Length != 0)EventFlags.Bits.Port1RxDone = 1;void EP1_In(void)D12_ReadLastTransactionStatus(3);void EP2_Out(void)unsigned char Length,EP2Status;D12_ReadLastTransactionStatus(4); /* Clear interrupt flag */EP2Status = D12_ReadEndpointStatus(4);EP2Status&=0x60;Length = D12_ReadEndpoint(4,sizeof(EndPoint2Buffer),EndPoint2Buffer);if(EP2Status=0x60)Length = D12_ReadEndpoint(4,sizeof(EndPoint2Buffer),EndPoint2Buffer);if(Length != 0)EventFlags.Bits.Port2RxDone = 1;void EP2_In(void)D12_ReadLastTransactionStatus(5); /* Clear interrupt flag */*/请求处理typedef struct _usb_device_descriptorunsigned char bLength;unsigned char bDescriptorType;unsigned int bcdUSB;unsigned char bDeviceClass;unsigned char bDeviceSubClass;unsigned char bDeviceProtocol;unsigned char bMaxPacketSize0;unsigned int idVendor;unsigned int idProduct;unsigned int bcdDevice;unsigned char iManufacturer;unsigned char iProduct;unsigned char iSerialNumber;unsigned char bNumConfiguations;USB_DEVICE_DESCRIPTOR;code USB_DEVICE_DESCRIPTOR DeviceDescr=sizeof(USB_DEVICE_DESCRIPTOR), 0x01,/USB_DEVICE_DESCRIPTOR_TYPE, SWAP(0x0100), 0xDC,/USB_CLASS_CODE_TEST_CLASS_DEVICE, 0, 0,EP0_PACKET_SIZE,SWAP(0x0471),SWAP(0x0666),SWAP(0x0100), 0, 0, 0,25;/配置描述符typedef struct _usb_configuration_descriptorunsigned char bLength0x2e;USB_CONFIGURATION_DESCRIPTOR; code USB_CONFIGURATION_DESCRIPTOR ConfigDescr=0x09,0x02,0x2e,0x00,0x01,0x01,0x00,0xa0,0x32,0x09,0x04,0x00,0x00,0x04,0xdc,0xa0,0xb0,0x00,0x07,0x05,0x81,0x03,0x02,0x00,0x0a,0x07,0x05,0x01,0x03,0x02,0x00,0x0a,0x07,0x05,0x82,0x02,0x40,0x00,0x0a,0x07,0x05,0x02,0x02,0x40,0x00,0x0a;/code_tramsitvoid code_transmit(unsigned char code *pRomData,unsigned short len)ControlData.wCount=0;if(ControlData.wLengthlen)ControlData.wLength=len;ControlData.pData=pRomData;if(ControlData.wLength=EP0_PACKET_SIZE)D12_WriteEndpoint(1,EP0_PACKET_SIZE,ControlData.pData);ControlData.wCount+=EP0_PACKET_SIZE;EA = 0;EventFlags.Bits.ControlState=1;EA = 1;elseD12_WriteEndpoint(1,ControlData.wLength,pRomData);ControlData.wCount+=ControlData.wLength;EA = 0;EventFlags.Bits.ControlState=0;EA = 1;/获取描述符void get_descriptor(void)if(MSB(ControlData.DeviceRequest.wValue)=USB_DEVICE_DESCRIPTOR_TYPE)code_transmit(unsigned char code*)&DeviceDescr,sizeof(USB_DEVICE_DESCRIPTOR);return;if(MSB(ControlData.DeviceRequest.wValue)=USB_CONFIGURATION_DESCRIPTOR_TYPE)if(ControlData.DeviceRequest.wLengthCONFIG_DESCRIPTOR_LENGTH)ControlData.DeviceRequest.wLength=CONFIG_DESCRIPTOR_LENGTH;/标识符总大小2E byte,第二次请求时wlength=0x00ff/这里的ConfigDescr其实应该包括其他标识符!code_transmit(unsigned char code*)&ConfigDescr,ControlData.DeviceRequest.wLength);return;/single transmitvoid single_transmit(unsigned char *buf,unsigned char len)if(len=EP0_PACKET_SIZE)D12_WriteEndpoint(1,len,buf);/设置地址void set_address(void)D12_SetAddressEnable(unsigned char)(ControlData.DeviceRequest.wValue&0xff),1);/比如wValue是02 00 应该得到02single_transmit(0,0);/设置配置void set_configuration(void)if(ControlData.DeviceRequest.wValue=0)single_transmit(0,0);EventFlags.Bits.Configuration=0;D12_SetEndpointEnable(0);else if(ControlData.DeviceRequest.wValue=1)single_transmit(0,0);D12_SetEndpointEnable(0);D12_SetEndpointEnable(1);EventFlags.Bits.Configuration=1;/读取配置void get_configuration(void)unsigned char c=EventFlags.Bits.Configuration; single_transmit(&c,1);/读取设备接口信息void get_interface(void)unsigned char txdat=0;single_transmit(&txdat,1);static code void (*StandardDeviceRequest)(void)= 0,0,0,0, 0,set_address,get_descriptor,0, get_configuration,set_configuration,get_interface,0, 0,0,0,0;static code void (*VendorDeviceRequest)(void)= 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0;void ControlHandler(void)unsigned char type,req;type=ControlData.DeviceRequest.bmRequestType&USB_REQUEST_TYPE_MASK;/0011,0000breq=ControlData.DeviceRequest.bRequest&USB_REQUEST_MASK;/