单片机-基于stm32usb程序开发笔记

去去基于STM32USB程序开发笔以前一直就有打玩USB的想法，最近时间充足于是决心打玩STM32的USB， 月，在固件、上位机驱动以及应用程序的 面终于有所突破，这期间通过网络上授寻了许多相关资料，主要来自ST提供的说确实存在许多的知识壁垒，本着开源精神，在此对STM32的USB固件程序的编写、DriverStudio+WindowsXPDDK+VC6驱动开发第一篇：需要准备的一1：STM32的参考手册，这对于设备底层USB的硬件配置以及事件驱 操作，比如CNTR、ISTR、EPnR、DADDR等等，如果你想学习USB，这个手册是必须的。的所谓的中文版的USB2.0协议不是 英文版的USB2.0协议， STM32 去去 去去去去去去 USB设备（DEVICE）从来只 触发，USB主机（HOST）掌握主动权，发送什么数据，什么时候发送，是给设备数据还是从设备Function

::ThisfunctionhandlesUSBHighPriorityorCANTX:::void{}去Function去

::ThisfunctionhandlesUSBLowPriorityorCANRX0:: :voidUSB_LP_CAN_RX0_IRQHandler(void){}相关处理。中断传输(interrupt)、控制传输(control)、大流量传输(bulk)USB_LPI()响应，大流量传输(bulk)同样可能响应USB_HPI()，同步传输(isochronous)只响应USB_HPI()。USB_HPI()函数未做任何处理，在此开源希望大家能完善与纠正错误并能共享喜悦。以下是USB_LPI()函数：////Function////////

::LowPriorityInterrupt'sservice:::去//去void{unsignedshortwValISTR=#if(CNTR_MASK&ISTR_RESET) //Resetif(wValISTR&ISTR_RESET&vwInterruptMask)去去{}#if(CNTR_MASK&ISTR_DOVR) //DMAOver/Underrunif(wValISTR&ISTR_DOVR&vwInterruptMask){}#if(CNTR_MASK&ISTR_ERR) //Errorif(wValISTR&ISTR_ERR&vwInterruptMask){}#if(CNTR_MASK&ISTR_WKUP) //Wakeupif(wValISTR&ISTR_WKUP&vwInterruptMask){去去}#if(CNTR_MASK&ISTR_SUSP) //Suspendif(wValISTR&ISTR_SUSP&vwInterruptMask){ //mustbedoneaftersettingof}#if(CNTR_MASK&ISTR_SOF) //StartOfFrameif(wValISTR&ISTR_SOF&vwInterruptMask){}#if(CNTR_MASK&ISTR_ESOF) //ExpectedStartOfFrameif(wValISTR&ISTR_ESOF&vwInterruptMask){}#if(CNTR_MASK&ISTR_CTR) //CorrectTransferif(wValISTR&ISTR_CTR&vwInterruptMask){}}////Function////////

::HighPriorityInterrupt'sservice:::去//去void{}INT_ISTR_CTR()响应一次正确的数据传输中断，故名思意，在完成一次正确的数据传输操作后，就会响应此函数。voidISTR_CTR(void);voidISTR_SOF(void);voidISTR_ESOF(void);voidISTR_DOVR(void);voidISTR_ERROR(void);voidISTR_RESET(void);voidISTR_WAKEUP(void);//CNTRmask#defineCNTR_MASK CNTR_CTRM|CNTR_WKUPM|CNTR_SUSPM|CNTR_ERRM| CNTR_SOFM|CNTR_ESOFM|CNTR_RESETM| //去//Function去////////

::ISTRResetInterruptservice:::去去//void{//Setthebuffertable//Set pointtype:ENDP0SetEPR_Type(ENDP0,//Set pointdatabufferaddress:ENDP0RXSetBuffDescTable_RXAddr(ENDP0,ENDP0_RXADDR);//Set pointdatabufferaddress:ENDP0TXSetBuffDescTable_TXCount(ENDP0,0);SetBuffDescTable_TXAddr(ENDP0,ENDP0_TXADDR);//InitializetheRX/TXstatus:ENDP0SetEPR_RXStatus(ENDP0,EP_RX_VALID);SetEPR_TXStatus(ENDP0,//Set pointaddress:ENDP0SetEPR_Address(ENDP0,ENDP0);去去//TODO:Addyoucode// pointtype:SetEPR_Type(ENDP1,//Set pointdatabufferaddress:ENDP1RXSetBuffDescTable_RXAddr(ENDP1,ENDP1_RXADDR);//Set pointdatabufferaddress:ENDP1TXSetBuffDescTable_TXCount(ENDP1,0);SetBuffDescTable_TXAddr(ENDP1,ENDP1_TXADDR);//InitializetheRX/TXstatus:ENDP1SetEPR_RXStatus(ENDP1,EP_RX_VALID);SetEPR_TXStatus(ENDP1,//Set pointaddress:ENDP1SetEPR_Address(ENDP1,ENDP1);SetEPR_Type(ENDP2,去去//Set pointdatabufferaddress:ENDP2RXSetBuffDescTable_RXAddr(ENDP2,ENDP2_RXADDR);//Set pointdatabufferaddress:ENDP2TXSetBuffDescTable_TXCount(ENDP2,0);SetBuffDescTable_TXAddr(ENDP2,ENDP2_TXADDR);//InitializetheRX/TXstatus:ENDP2SetEPR_RXStatus(ENDP2,EP_RX_DIS);SetEPR_TXStatus(ENDP2,EP_TX_VALID);//Set pointaddress:ENDP2SetEPR_Address(ENDP2,ENDP2);//EndofyouvsDeviceInfo.eDeviceState=DS_DEFAULT;vsDeviceInfo.bCurrentFeature=0x00;vsDeviceInfo.bCurrentConfiguration=0x00;vsDeviceInfo.bCurrentInterface=0x00;去去vsDeviceInfo.bCurrentAlternateSetting=vsDeviceInfo.uStatusInfo.w=}RX/TX缓冲描述表说明是数据 //USB_IPPacketMemoryAreabaseaddress#definePMAAddr(0x40006000L)//BufferTableaddress#defineBTABLE((volatileunsigned*)(RegBase+////Packetmemoryarea:Total//#define ////PMAAddr+BASEADDR_BTABLE+0x00000000://PMAAddr+BASEADDR_BTABLE+0x00000002://PMAAddr+BASEADDR_BTABLE+0x00000004://PMAAddr+BASEADDR_BTABLE+0x00000006://PMAAddr+BASEADDR_BTABLE+0x00000008://PMAAddr+BASEADDR_BTABLE+0x0000000A:去去//PMAAddr+BASEADDR_BTABLE+0x0000000C://PMAAddr+BASEADDR_BTABLE+0x0000000E://PMAAddr+BASEADDR_BTABLE+0x00000010://PMAAddr+BASEADDR_BTABLE+0x00000012://PMAAddr+BASEADDR_BTABLE+0x00000014://PMAAddr+BASEADDR_BTABLE+0x00000016://PMAAddr+BASEADDR_BTABLE+0x00000018://PMAAddr+BASEADDR_BTABLE+0x0000001A://PMAAddr+BASEADDR_BTABLE+0x0000001C://PMAAddr+BASEADDR_BTABLE+0x0000001E://PMAAddr+BASEADDR_BTABLE+0x00000020://PMAAddr+BASEADDR_BTABLE+0x00000022://PMAAddr+BASEADDR_BTABLE+0x00000024://PMAAddr+BASEADDR_BTABLE+0x00000026://PMAAddr+BASEADDR_BTABLE+0x00000028://PMAAddr+BASEADDR_BTABLE+0x0000002A://PMAAddr+BASEADDR_BTABLE+0x0000002C://PMAAddr+BASEADDR_BTABLE+0x0000002E://PMAAddr+BASEADDR_BTABLE+0x00000030://PMAAddr+BASEADDR_BTABLE+0x00000032://PMAAddr+BASEADDR_BTABLE+0x00000034://PMAAddr+BASEADDR_BTABLE+0x00000036://PMAAddr+BASEADDR_BTABLE+0x00000038://PMAAddr+BASEADDR_BTABLE+0x0000003A://PMAAddr+BASEADDR_BTABLE+0x0000003C://PMAAddr+BASEADDR_BTABLE+0x0000003E:////PMAAddr+BASEADDR_BTABLE+(0x00000040-0x000001FF):assignedtodata//#define (BASEADDR_BTABLE+//ENP0

(ENDP0_RXADDR+去去//#define #defineENDP1_RXADDR (ENDP0_TXADDR+ENDP0_PACKETSIZE)#define (ENDP1_RXADDR+//#define #define (ENDP1_TXADDR+去去+//++//++//++//++//++////Function////////

::ISTRCorrectTransferInterruptservice:::去//去void{unsigned unsignedshortwValISTR;unsignedshortwhile(((wValISTR=GetISTR())&ISTR_CTR)!=0{//Gettheindexnumber Index=wValISTR& Index=={//Setendpoint0RX/TXstatus:NAK(Negative-SetEPR_TXStatus(ENDP0,去去//Transferif((wValISTR&ISTR_DIR)=={//DIR=0://DIR=0impliesthatEP_CTR_TXalways}{//DIR=1:SETUPor//DIR=1impliesthatCTR_TXorCTR_RXalwayswValENDP=GetEPR(ENDP0);if((wValENDP&EP_CTR_TX)!=0){}elseif((wValENDP&EP_SETUP)!={去去}elseif((wValENDP&EP_CTR_RX)!={}}}//Other{wValENDP= Index,if((wValENDP&EP_CTR_TX)!={ClrEPR_CTR_TX( {caseENDP1:CTR_IN1();caseENDP2:CTR_IN2();break;caseENDP3:CTR_IN3();break;caseENDP4:CTR_IN4();break;去去caseENDP5:CTR_IN5();break;caseENDP6:CTR_IN6();break;caseENDP7:CTR_IN7();break;default:break;}}if((wValENDP&EP_CTR_RX)!={ClrEPR_CTR_RX( {caseENDP1:CTR_OUT1();caseENDP2:CTR_OUT2();break;caseENDP3:CTR_OUT3();break;caseENDP4:CTR_OUT4();break;caseENDP5:CTR_OUT5();break;caseENDP6:CTR_OUT6();break;caseENDP7:CTR_OUT7();break;default:break;}}}}}去去去去去去去去去去去去去去去去volatileDEVICE_INFO////typedefstruct_DEVICE_INFO{unsignedcharunsignedcharbCurrentFeature;unsignedcharbCurrentConfiguration;unsignedcharbCurrentInterface;

去CONTROL_STATE去 TRANSFER_INFO}typedefstruct{unsignedcharunsignedchar

//request// 去去WORD_2BYTEwValue;WORD_2BYTEwIndex;WORD_2BYTE}typedefunion{unsignedshort{unsignedcharunsignedchar}去去CTR_SETUP0()函数将SETUP数据提取出来，SETUP数据结构有0长度和非0长度的数据结构，详细参阅USB2.0 这将两种区别开来分别执行SETUP0_NoData()和SETUP0_Data()函数，并返回结果，根据返回结果再响应USB主机////FunctionName:// // // // //void{RESULTBufferCopy_PMAToUser((unsignedcharif(vsDeviceInfo.SetupData.wLength.w=={eResult=}去去{eResult=}{casecasecasecaseSetEPR_TXStatus(ENDP0,}}done"的部分表明此部分功能已完成。对于未完成部////RoutineGroups:RESULTSETUP0_Data(void){//SetupData.bRequest: {casecaseSR_GET_DESCRIPTOR:caseSR_SET_DESCRIPTOR:caseSR_GET_INTERFACE:case

returnreturnSR_GetDescriptor();returnSR_SetDescriptor();returnSR_GetInterface();returnSR_SynchFrame();

////////////去去default:return}}////RoutineGroups://RESULT{//SetupData.bRequest: {casecasecaseSR_SET_INTERFACE:

returnSR_ClearFeature();returnSR_SetFeature();returnSR_SetAddress();returnSR_SetInterface();

//////////default:return}}SetEPR_RXStatus(ENDP0,SetEPR_TXStatus(ENDP0,//去//Function去//////

::::// RESULTSETUP0_Trans0Data(void){//Send0-lengthdataframeasACKtoSetBuffDescTable_TXCount(ENDP0,0);SetEPR_RXStatus(ENDP0,EP_RX_NAK);return}////Function////////

:::::去//去RESULT{unsignedshortwLength=unsignedshortwOffset=vsDeviceInfo.TransInfo.wOffset;unsignedshortwMaxSize=vsDeviceInfo.TransInfo. {if(wLength>{wLength=}//Copythetransferbufferto point0'sbuffer

//transfer//endpoint0TX去去SetBuffDescTable_TXCount(ENDP0,wLength);SetEPR_RXStatus(ENDP0,EP_RX_NAK);SetEPR_TXStatus(ENDP0,EP_TX_VALID);//UpdatethedatalengthsvsDeviceInfo.TransInfo.wLength-=wLength;vsDeviceInfo.TransInfo.wOffset+=return}return}//////typedefstruct{unsignedshortunsignedshortwOffset;unsignedshort unsignedchar*pBuffer;}

//totallengthsdatawillbe//numberofdatabe//endpointspacketmax//addressofdata去去机将无条件退出请求；TXVALID，USBUSB设备数据。CTR_SETUP0()->SETUP0_Data()->SR_GetDescriptor()-RESULT{//RequestType:device->host,standardrequestanddeviceif(vsDeviceInfo.SetupData.bmRequestType=={//SetupData.wValue.b.MSB:descriptor//SetupData.wValue.b.LSB:descriptorindex{casecaseDESCRIPTOR_CONFIG:caseDESCRIPTOR_STRING:

returnreturnSR_GetDescriptor_Config();returnSR_GetDescriptor_String();去去default:return}}return}RESULT{//AssignedthedevicedescriptortothevsDeviceInfo.TransInfo.wOffset=0; cketSize=ENDP0_PACKETSIZE;vsDeviceInfo.TransInfo.wLength=DescBuffer_Device.wLen;vsDeviceInfo.eControlState=CS_GET_DESCRIPTOR;if(vsDeviceInfo.TransInfo.wLength>去去{vsDeviceInfo.TransInfo.wLength=}return} ////FunctionName:// // // // //void{{caseif(SETUP0_TransData()=={SetEPR_TXStatus(ENDP0,SetEPR_RXStatus(ENDP0,}去去caseCS_SET_ADDRESS:SetEPR_TXStatus(ENDP0,EP_TX_NAK);vsDeviceInfo.eDeviceState=DS_ADDRESSED;caseSetEPR_TXStatus(ENDP0,SetEPR_RXStatus(ENDP0,vsDeviceInfo.eDeviceState=DS_CONFIGURED;}}构等等，条件是你必须了解这些标准设备的一些信息，好处是省去一些麻烦的驱动编写。constunsignedcharcbDescriptor_Device[DESC_SIZE_DEVICE]{

//bLength://descriptor

//bcdUSBLSB:USBreleasenumber->//bcdUSBMSB:USBreleasenumber->

// Classinformationintheinterface//////bMaxPacketSize0:LowS(8),FullS(8,16,32,64),去去idVendorLSB:idVendoridProductidProductbcdDevicebcdDevice

//iManufacturer:Indexofstringdescriptordescribing//iProduct:Indexofstringdescriptordescribing//iSerialNumber:Indexofstringdescriptordescribingthedeviceserial

//bNumConfigurations:numberofconstunsignedcharcbDescriptor_Config[DESC_SIZE_CONFIG]{//Descriptorof

////descriptor

//Totalconfigurationdescriptorlengths//Totalconfigurationdescriptorlengths

//bNumInterfaces:Totalnumberof//bConfigurationValue:Configuration//iConfiguration:Indexofstringdescriptordescribingthe去去 //bmAttributes:bus//bit4...0 ,setto//bit//bit//bit

:Remotewakeup:Selfpower ,setto //bMaxPower:thiscurrentisusedfordetectingVbus=//Descriptorofinterface

//bInterfaceNumber:Numberof//bAlternateSetting:Alternate

//bNumEndpoints:Numberofendpointsexcept//////去去 //iInterface:Indexofstringdescriptordescribingthe//Descriptorofendpoint1OUT ////bit3...0 point//bit6...4//bit :0(OUT),

////bit1...0:Transfer 00(CONTROL),01(ISOCHRONOUS),10(BULK),//bit3...2:Synchronization 00(NoSynch),01(Asynchronous),10(Adaptive),//bit5...4:EndpointUsage 00(data),01(Feedback),10(Implicitfeedbackdataendpoint), //bit7...6 ,mustbe//packetsize//packetsize去去 //pollingintervaltime://Descriptorofendpoint2IN ////bit3...0 point//bit6...4//bit :0(OUT),

bit1...0:Transfer00(CONTROL),01(ISOCHRONOUS),10(BULK),//bit3...2//bit5...4//bit7...6

Synchronization00(NoSynch),01(Asynchronous),10(Adaptive),EndpointUsage00(data),01(Feedback),10(Implicitfeedbackdataendpoint), ,mustbe //packetsize //packetsize

//pollingintervaltime:constunsignedcharcbDescriptor_StringLangID[DESC_SIZE_STRING_LANGID]{

////bDescriptorType=String去去

//LangID//LangIDMSB:0x0409(U.S.去去constunsignedcharcbDescriptor_StringVendor[DESC_SIZE_STRING_VENDOR]{DESC_SIZE_STRING_VENDOR,// //bDescriptorType=String//String:'L',0,'a',0,'B',0,'i',0,'X',0,'i',0,'a',0,'X',0,'i',0,'a',0,'o',0,'X',0,'i',0,constunsignedcharcbDescriptor_StringProduct[DESC_SIZE_STRING_PRODUCT]{DESC_SIZE_STRING_PRODUCT,// //bDescriptorType=String//String:"STM32ezUSB-CORE'S',0,'T',0,'M',0,'3',0,'2',0,'',0,'e',0,'z',0,'U',0,'S',0,'-',0,'C',0,'O',0,'R',0,'E',0,'',0,'V',0,'1',0,'.',0,'0',0,constunsignedcharcbDescriptor_StringSerial[DESC_SIZE_STRING_SERIAL]{DESC_SIZE_STRING_SERIAL,// //bDescriptorType=String去去//String:"ezUSB-COREDemo'e',0,'z',0,'U',0,'S',0,'B',0,'-',0,'C',0,'O',0,'R',0,'E',0,''D',0,'e',0,'m',0,'o',0,'',0,'2',0,'0',0,'0',0,'8',0,'/',0,'1',0,'1',0,'/',0,'1',0, 必须的先决条件1：XPDDK（DriverDevelopmentKits），可从MS 处理稍微不当，就容易让你系统直接挂了（WINDOWS著名的蓝屏）。DDK提供了一些驱动代码，有 去去WindowsXP去去去去 去去ReadFile()/WriteFile()IRP_MJ_READ/IRP_MJ_WRITEReadFrom_EP2和WriteTo_EP1NTSTATUSezUSBDevice::ReadFrom_EP2_Handler(KIrpI)；NTSTATUSezUSBDevice::WriteTo_EP1_Handler(KIrpI)；去去去去 去去去去 去去VC6USBCUSBAPIUSBAPI.h#defineFILE_DEVICE_EZUSB#defineEZUSB_IOCTL(index)CTL_CODE(FILE_DEVICE_EZUSB,index,METHOD_BUFFERED,#defineReadFrom_EP2CTL_CODE(FILE_DEVICE_EZUSB,0x800,METHOD_IN_DIRECT,#defineWriteTo_EP1CTL_CODE(FILE_DEVICE_EZUSB,0x801,METHOD_OUT_DIRECT, typedefstruct{ //Indexforthisstruct_NODE_ENUDEVICEINTERFACE}去去 0xE075C5B2,0xE7FB,0x4186,0xA1,0x39,0x0B,0x3F,0xD2,0x05,0xE7, typedefstruct{HWNDh HANDLEhDevice;DWORDDWORDdwInSize;DWORDdwOutSize;LPDWORD} #define#defineCORESTATUS_READWRITE_EVENT_ERROR#defineCORESTATUS_IOCONTROL_EVENT_ERROR

#defineERROR_HANDLE_WINDOW#defineERROR_HANDLE_DEVICE#defineERROR_BUFFER_LENGTH#defineERROR_BUFFER_ISNULL#define

去去 PLETION和 PLETION通知应用程序。详细代码请参考源程序。////ClassmembersclassCUSBAPI{DWORDEnumDeviceInter