usb的描述符文件。
包括设备描述 ，接口描述符，端点描述符，字符串描述符等。用于描述设备的总体信息。包括pid，vid，设备类和设备子类等。一个usb设备只能有一个设备描述符。配置描述符一般描述usb设备的配置信息。可以有一个或者多个配置，每个配置必须有一个配置描述符。字符串描述符用来保存一些供应商的名称，设备序列号，供应商名称等的文本信息。接口描述符用来表述usb接口中各个接口的特性。，包括接口号，端点个数，所属的设备和子类等等。
端点描述符表述usb设备端点的特性，包括所支持的传输类型、传输方向、最大的数据包长度、和访问间隔等信息。
;;-----------------------------------------------------------------------------;; File: dscr.a51;; Contents: This file contains descriptor data tables. 此文件包含描述符表;;;; $Archive: /USB/Examples/Fx2lp/bulkloop/dscr.a51 $;; $Date: 9/01/03 8:51p $;; $Revision: 3 $;;;;;;-----------------------------------------------------------------------------;; Copyright 2003, Cypress Semiconductor Corporation;;-----------------------------------------------------------------------------;;----------------------------------------------------------------------------- DSCR_DEVICE equ 1 ;; Descriptor type: Device 描述类型：设备DSCR_CONFIG equ 2 ;; Descriptor type: Configuration 描述类型：配置DSCR_STRING equ 3 ;; Descriptor type: String描述类型:字符串DSCR_INTRFC equ 4 ;; Descriptor type: Interface 描述类型：接口DSCR_ENDPNT equ 5 ;; Descriptor type: Endpoint 描述类型：端点DSCR_DEVQUAL equ 6 ;; Descriptor type: Device Qualifier 描述类型：设备速度类型，告诉或全速设备所独有DSCR_DEVICE_LEN equ 18DSCR_CONFIG_LEN equ 9DSCR_INTRFC_LEN equ 9DSCR_ENDPNT_LEN equ 7DSCR_DEVQUAL_LEN equ 10ET_CONTROL equ 0 ;; Endpoint type: Control 端点类型，控制传输ET_ISO equ 1 ;; Endpoint type: Isochronous 端点类型，等时传输ET_BULK equ 2 ;; Endpoint type: Bulk 端点类型，块传输ET_INT equ 3 ;; Endpoint type: Interrupt端点类型，中断public DeviceDscr, DeviceQualDscr, HighSpeedConfigDscr, FullSpeedConfigDscr, StringDscr, UserDscrDSCR SEGMENT CODE PAGE;;-----------------------------------------------------------------------------;; Global Variables;;----------------------------------------------------------------------------- rseg DSCR ;; locate the descriptor table in on-part memory.DeviceDscr: db DSCR_DEVICE_LEN ;; Descriptor length设备描述符的长度，18字节。 db DSCR_DEVICE ;; Decriptor type 描述类型 dw 0002H ;; Specification Version (BCD) 符合usb2.0规范 db 00H ;; Device class 设备类代码 db 00H ;; Device sub-class设备子类代码 db 00H ;; Device sub-sub-class设备协议代码 db 64 ;; Maximum packet size端点0的最大包大小 dw 3412H ;; Vendor ID厂商idvid dw 7856H ;; Product ID (Sample Device) 产品id pid dw 0000H ;; Product version ID 设备版本 db 1 ;; Manufacturer string index 厂商的字符串描述索引 db 2 ;; Product string index 产品的描述符索引 db 0 ;; Serial number string index 设备序列号的字符串描述符索引 db 1 ;; Number of configurations 可能的配置数目DeviceQualDscr: db DSCR_DEVQUAL_LEN ;; Descriptor length 高速设备独有的描述符，支持全速和高速的设备，必须有一个这个描述符 db DSCR_DEVQUAL ;; Decriptor type dw 0002H ;; Specification Version (BCD) db 00H ;; Device class db 00H ;; Device sub-class db 00H ;; Device sub-sub-class db 64 ;; Maximum packet size db 1 ;; Number of configurations db 0 ;; ReservedHighSpeedConfigDscr: db DSCR_CONFIG_LEN ;; Descriptor length 配置描述符，高速设备描述符 db DSCR_CONFIG ;; Descriptor type描述类型 =0x02 db (HighSpeedConfigDscrEnd-HighSpeedConfigDscr) mod 256 ;; Total Length (LSB) 描述符总长度，低字节 db (HighSpeedConfigDscrEnd-HighSpeedConfigDscr) / 256 ;; Total Length (MSB) 高字节 db 1 ;; Number of interfaces 接口数目 db 1 ;; Configuration number 配置值 db 0 ;; Configuration string配置的字符串描述符索引 db 10000000b ;; Attributes (b7 - buspwr, b6 - selfpwr, b5 - rwu) 配置的属性 db 50 ;; Power requirement (p 2 ma) 最大电流;; Interface Descriptor 接口描述符 db DSCR_INTRFC_LEN ;; Descriptor length db DSCR_INTRFC ;; Descriptor type 04h db 0 ;; Zero-based index of this interface 接口号 db 0 ;; Alternate setting 替换设置号数 db 2 ;; Number of end points 除了端点0外，支持的端点数目是2 db 0ffH ;; Interface class 接口类代码，制定为厂商定义类 db 00H ;; Interface sub class 接口有子类代码 db 00H ;; Interface sub sub class 接口协议代码 db 0 ;; Interface descriptor string index 此接口的字符串描述符索引 ;; Endpoint Descriptor端点描述符 db DSCR_ENDPNT_LEN ;; Descriptor length db DSCR_ENDPNT ;; Descriptor type db 82H ;; Endpoint number, and direction 端点号，和方向 db ET_BULK ;; Endpoint type 端点传输类型 db 00H ;; Maximun packet size (LSB) 数据包大小低位 db 04H ;; Max packect size (MSB) db 00H ;; Polling interval 轮巡间隔;; Endpoint Descriptor db DSCR_ENDPNT_LEN ;; Descriptor length db DSCR_ENDPNT ;; Descriptor type db 08H ;; Endpoint number, and direction db ET_BULK ;; Endpoint type db 00H ;; Maximun packet size (LSB) db 02H ;; Max packect size (MSB) db 00H ;; Polling intervalHighSpeedConfigDscrEnd: FullSpeedConfigDscr: db DSCR_CONFIG_LEN ;; Descriptor length db DSCR_CONFIG ;; Descriptor type db (FullSpeedConfigDscrEnd-FullSpeedConfigDscr) mod 256 ;; Total Length (LSB) db (FullSpeedConfigDscrEnd-FullSpeedConfigDscr) / 256 ;; Total Length (MSB) db 1 ;; Number of interfaces db 1 ;; Configuration number db 0 ;; Configuration string db 10000000b ;; Attributes (b7 - buspwr, b6 - selfpwr, b5 - rwu) db 50 ;; Power requirement (p 2 ma);; Interface Descriptor db DSCR_INTRFC_LEN ;; Descriptor length db DSCR_INTRFC ;; Descriptor type db 0 ;; Zero-based index of this interface db 0 ;; Alternate setting db 4 ;; Number of end points db 0ffH ;; Interface class db 00H ;; Interface sub class db 00H ;; Interface sub sub class db 0 ;; Interface descriptor string index ;; Endpoint Descriptor db DSCR_ENDPNT_LEN ;; Descriptor length db DSCR_ENDPNT ;; Descriptor type db 02H ;; Endpoint number, and direction db ET_BULK ;; Endpoint type db 40H ;; Maximun packet size (LSB) db 00H ;; Max packect size (MSB) db 00H ;; Polling interval;; Endpoint Descriptor db DSCR_ENDPNT_LEN ;; Descriptor length db DSCR_ENDPNT ;; Descriptor type db 04H ;; Endpoint number, and direction db ET_BULK ;; Endpoint type db 40H ;; Maximun packet size (LSB) db 00H ;; Max packect size (MSB) db 00H ;; Polling interval;; Endpoint Descriptor db DSCR_ENDPNT_LEN ;; Descriptor length db DSCR_ENDPNT ;; Descriptor type db 86H ;; Endpoint number, and direction db ET_BULK ;; Endpoint type db 40H ;; Maximun packet size (LSB) db 00H ;; Max packect size (MSB) db 00H ;; Polling interval;; Endpoint Descriptor db DSCR_ENDPNT_LEN ;; Descriptor length db DSCR_ENDPNT ;; Descriptor type db 88H ;; Endpoint number, and direction db ET_BULK ;; Endpoint type db 40H ;; Maximun packet size (LSB) db 00H ;; Max packect size (MSB) db 00H ;; Polling intervalFullSpeedConfigDscrEnd: StringDscr: //字符串描述符StringDscr0: //字符串0 db StringDscr0End-StringDscr0 ;; String descriptor length 描述长度 db DSCR_STRING //描述类型 db 09H,04H //设备所支持的语言代码，表示是英语StringDscr0End:StringDscr1: db StringDscr1End-StringDscr1 ;; String descriptor length制造商的字符串描述符 db DSCR_STRING db 'C',00 db 'y',00 db 'p',00 db 'r',00 db 'e',00 db 's',00 db 's',00StringDscr1End:StringDscr2: db StringDscr2End-StringDscr2 ;; Descriptor length 产品的字符串描述符 db DSCR_STRING db 'E',00 db 'Z',00 db '-',00 db 'U',00 db 'S',00 db 'B',00StringDscr2End:UserDscr: //空描述符，表述描述符表的结束 dw 0000H end
fw.c文件，代表主程序文件，usb协议等都在这里实现，包括断电上电枚举，重枚举，唤醒以及调用用户自己的程序和控制命令等等都在这里完成。它首先进行一系列通用初始化设置，并调用void TD_Init(void)函数来实现用户的特殊初始化设置。之后，程序会一直监视是否有指令收到，并在空闲的时候反复调用TD_Poll()函数来实现我们用户的功能
//-----------------------------------------------------------------------------// File: fw.c// Contents: Firmware frameworks task dispatcher and device request parser//// $Archive: /USB/Examples/FX2LP/bulkext/fw.c $// $Date: 3/23/05 2:53p $// $Revision: 8 $//////-----------------------------------------------------------------------------// Copyright 2003, Cypress Semiconductor Corporation//-----------------------------------------------------------------------------#include "fx2.h"#include "fx2regs.h"#include "syncdly.h" // SYNCDELAY macro//-----------------------------------------------------------------------------// Constants 目录//-----------------------------------------------------------------------------#define DELAY_COUNT 0x9248*8L // Delay for 8 sec at 24Mhz, 4 sec at 48 在24Mhz的时钟下延迟8秒，48Mhz的时钟下延迟4秒。#define _IFREQ 48000 // IFCLK constant for Synchronization Delay#define _CFREQ 48000 // CLKOUT constant for Synchronization Delay#define SC_SetData 0xAB //自定义指令//-----------------------------------------------------------------------------// Random Macros//-----------------------------------------------------------------------------#define min(a,b) (((a)<(b))?(a):(b))#define max(a,b) (((a)>(b))?(a):(b))//-----------------------------------------------------------------------------// Global Variables//-----------------------------------------------------------------------------volatile BOOL GotSUD; //防止编译器优化BOOL Rwuen;BOOL Selfpwr;volatile BOOL Sleep; // Sleep mode enable flagWORD pDeviceDscr; // Pointer to Device Descriptor; Descriptors may be movedWORD pDeviceQualDscr;WORD pHighSpeedConfigDscr;WORD pFullSpeedConfigDscr; WORD pConfigDscr;WORD pOtherConfigDscr; WORD pStringDscr; //-----------------------------------------------------------------------------// Prototypes//-----------------------------------------------------------------------------void SetupCommand(void);void TD_Init(void);void TD_Poll(void);void DR_SetData(void); //自定义函数BOOL TD_Suspend(void);BOOL TD_Resume(void);BOOL DR_GetDescriptor(void);BOOL DR_SetConfiguration(void);BOOL DR_GetConfiguration(void);BOOL DR_SetInterface(void);BOOL DR_GetInterface(void);BOOL DR_GetStatus(void);BOOL DR_ClearFeature(void);BOOL DR_SetFeature(void);BOOL DR_VendorCmnd(void);// this table is used by the epcs macro const char code EPCS_Offset_Lookup_Table[] ={ 0, // EP1OUT 1, // EP1IN 2, // EP2OUT 2, // EP2IN 3, // EP4OUT 3, // EP4IN 4, // EP6OUT 4, // EP6IN 5, // EP8OUT 5, // EP8IN};// macro for generating the address of an endpoint's control and status register (EPnCS)#define epcs(EP) (EPCS_Offset_Lookup_Table[(EP & 0x7E) | (EP > 128)] + 0xE6A1)//-----------------------------------------------------------------------------// Code//-----------------------------------------------------------------------------// Task dispatchervoid main(void){ DWORD i; WORD offset; DWORD DevDescrLen; DWORD j=0; WORD IntDescrAddr; WORD ExtDescrAddr; // Initialize Global States Sleep = FALSE; // Disable sleep mode Rwuen = FALSE; // Disable remote wakeup Selfpwr = FALSE; // Disable self powered GotSUD = FALSE; // Clear "Got setup data" flag // Initialize user device TD_Init(); // The following section of code is used to relocate the descriptor table. // The frameworks uses SUDPTRH and SUDPTRL to automate the SETUP requests // for descriptors. These registers only work with memory locations // in the EZ-USB internal RAM. Therefore, if the descriptors are located // in external RAM, they must be copied to in internal RAM. // The descriptor table is relocated by the frameworks ONLY if it is found // to be located in external memory. pDeviceDscr = (WORD)&DeviceDscr; pDeviceQualDscr = (WORD)&DeviceQualDscr; pHighSpeedConfigDscr = (WORD)&HighSpeedConfigDscr; pFullSpeedConfigDscr = (WORD)&FullSpeedConfigDscr; pStringDscr = (WORD)&StringDscr; // Is the descriptor table in external RAM (> 16Kbytes)? If yes, // then relocate. // Note that this code only checks if the descriptors START in // external RAM. It will not work if the descriptor table spans // internal and external RAM. if ((WORD)&DeviceDscr & 0xC000) { // first, relocate the descriptors IntDescrAddr = INTERNAL_DSCR_ADDR; ExtDescrAddr = (WORD)&DeviceDscr; DevDescrLen = (WORD)&UserDscr - (WORD)&DeviceDscr + 2; for (i = 0; i < DevDescrLen; i++) *((BYTE xdata *)IntDescrAddr+i) = *((BYTE xdata *)ExtDescrAddr+i); // update all of the descriptor pointers pDeviceDscr = IntDescrAddr; offset = (WORD)&DeviceDscr - INTERNAL_DSCR_ADDR; pDeviceQualDscr -= offset; pConfigDscr -= offset; pOtherConfigDscr -= offset; pHighSpeedConfigDscr -= offset; pFullSpeedConfigDscr -= offset; pStringDscr -= offset; } EZUSB_IRQ_ENABLE(); // Enable USB interrupt (INT2) EZUSB_ENABLE_RSMIRQ(); // Wake-up interrupt INTSETUP |= (bmAV2EN | bmAV4EN); // Enable INT 2 & 4 autovectoring USBIE |= bmSUDAV | bmSUTOK | bmSUSP | bmURES | bmHSGRANT; // Enable selected interrupts EA = 1; // Enable 8051 interrupts#ifndef NO_RENUM // Renumerate if necessary. Do this by checking the renum bit. If it // is already set, there is no need to renumerate. The renum bit will // already be set if this firmware was loaded from an eeprom. if(!(USBCS & bmRENUM)) { EZUSB_Discon(TRUE); // renumerate }#endif // unconditionally re-connect. If we loaded from eeprom we are // disconnected and need to connect. If we just renumerated this // is not necessary but doesn't hurt anything USBCS &=~bmDISCON; CKCON = (CKCON&(~bmSTRETCH)) | FW_STRETCH_VALUE; // Set stretch // clear the Sleep flag. Sleep = FALSE; // Task Dispatcher while(TRUE) // Main Loop { // Poll User Device TD_Poll(); // Check for pending SETUP if(GotSUD) { SetupCommand(); // Implement setup command GotSUD = FALSE; // Clear SETUP flag } // check for and handle suspend. // NOTE: Idle mode stops the processor clock. There are only two // ways out of idle mode, the WAKEUP pin, and detection of the USB // resume state on the USB bus. The timers will stop and the // processor will not wake up on any other interrupts. if (Sleep) { if(TD_Suspend()) { Sleep = FALSE; // Clear the "go to sleep" flag. Do it here to prevent any race condition between wakeup and the next sleep. do { EZUSB_Susp(); // Place processor in idle mode. } while(!Rwuen && EZUSB_EXTWAKEUP()); // above. Must continue to go back into suspend if the host has disabled remote wakeup // *and* the wakeup was caused by the external wakeup pin. // 8051 activity will resume here due to USB bus or Wakeup# pin activity. EZUSB_Resume(); // If source is the Wakeup# pin, signal the host to Resume. TD_Resume(); } } }}BOOL HighSpeedCapable(){ // this function determines if the chip is high-speed capable. // FX2 and FX2LP are high-speed capable. FX1 is not - it does // not have a high-speed transceiver. if (GPCR2 & bmFULLSPEEDONLY) return FALSE; else return TRUE;} // Device request parservoid SetupCommand(void){ void *dscr_ptr; switch(SETUPDAT[1]) { case SC_GET_DESCRIPTOR: // *** Get Descriptor if(DR_GetDescriptor()) switch(SETUPDAT[3]) { case GD_DEVICE: // Device SUDPTRH = MSB(pDeviceDscr); SUDPTRL = LSB(pDeviceDscr); break; case GD_DEVICE_QUALIFIER: // Device Qualifier // only retuen a device qualifier if this is a high speed // capable chip. if (HighSpeedCapable()) { SUDPTRH = MSB(pDeviceQualDscr); SUDPTRL = LSB(pDeviceQualDscr); } else { EZUSB_STALL_EP0(); } break; case GD_CONFIGURATION: // Configuration SUDPTRH = MSB(pConfigDscr); SUDPTRL = LSB(pConfigDscr); break; case GD_OTHER_SPEED_CONFIGURATION: // Other Speed Configuration SUDPTRH = MSB(pOtherConfigDscr); SUDPTRL = LSB(pOtherConfigDscr); break; case GD_STRING: // String if(dscr_ptr = (void *)EZUSB_GetStringDscr(SETUPDAT[2])) { SUDPTRH = MSB(dscr_ptr); SUDPTRL = LSB(dscr_ptr); } else EZUSB_STALL_EP0(); // Stall End Point 0 break; default: // Invalid request EZUSB_STALL_EP0(); // Stall End Point 0 } break; case SC_GET_INTERFACE: // *** Get Interface DR_GetInterface(); break; case SC_SET_INTERFACE: // *** Set Interface DR_SetInterface(); break; case SC_SET_CONFIGURATION: // *** Set Configuration DR_SetConfiguration(); break; case SC_GET_CONFIGURATION: // *** Get Configuration DR_GetConfiguration(); break; case SC_GET_STATUS: // *** Get Status if(DR_GetStatus()) switch(SETUPDAT[0]) { case GS_DEVICE: // Device EP0BUF[0] = ((BYTE)Rwuen << 1) | (BYTE)Selfpwr; EP0BUF[1] = 0; EP0BCH = 0; EP0BCL = 2; break; case GS_INTERFACE: // Interface EP0BUF[0] = 0; EP0BUF[1] = 0; EP0BCH = 0; EP0BCL = 2; break; case GS_ENDPOINT: // End Point EP0BUF[0] = *(BYTE xdata *) epcs(SETUPDAT[4]) & bmEPSTALL; EP0BUF[1] = 0; EP0BCH = 0; EP0BCL = 2; break; default: // Invalid Command EZUSB_STALL_EP0(); // Stall End Point 0 } break; case SC_CLEAR_FEATURE: // *** Clear Feature if(DR_ClearFeature()) switch(SETUPDAT[0]) { case FT_DEVICE: // Device if(SETUPDAT[2] == 1) Rwuen = FALSE; // Disable Remote Wakeup else EZUSB_STALL_EP0(); // Stall End Point 0 break; case FT_ENDPOINT: // End Point if(SETUPDAT[2] == 0) { *(BYTE xdata *) epcs(SETUPDAT[4]) &= ~bmEPSTALL; EZUSB_RESET_DATA_TOGGLE( SETUPDAT[4] ); } else EZUSB_STALL_EP0(); // Stall End Point 0 break; } break; case SC_SET_FEATURE: // *** Set Feature if(DR_SetFeature()) switch(SETUPDAT[0]) { case FT_DEVICE: // Device if(SETUPDAT[2] == 1) Rwuen = TRUE; // Enable Remote Wakeup else if(SETUPDAT[2] == 2) // Set Feature Test Mode. The core handles this request. However, it is // necessary for the firmware to complete the handshake phase of the // control transfer before the chip will enter test mode. It is also // necessary for FX2 to be physically disconnected (D+ and D-) // from the host before it will enter test mode. break; else EZUSB_STALL_EP0(); // Stall End Point 0 break; case FT_ENDPOINT: // End Point *(BYTE xdata *) epcs(SETUPDAT[4]) |= bmEPSTALL; break; default: EZUSB_STALL_EP0(); // Stall End Point 0 } break; case SC_SetData: DR_SetData(); break; default: // *** Invalid Command if(DR_VendorCmnd()) EZUSB_STALL_EP0(); // Stall End Point 0 } // Acknowledge handshake phase of device request EP0CS |= bmHSNAK;}// Wake-up interrupt handlervoid resume_isr(void) interrupt WKUP_VECT{ EZUSB_CLEAR_RSMIRQ();}bulkloop.c批量循环文件
//-----------------------------------------------------------------------------// File: bulkloop.c// Contents: Hooks required to implement USB peripheral function. 通过钩子请求配置usb外围设备的功能//// $Archive: /USB/Examples/FX2LP/bulkloop/bulkloop.c $// $Date: 3/23/05 2:55p $// $Revision: 4 $//////-----------------------------------------------------------------------------// Copyright 2003, Cypress Semiconductor Corporation//-----------------------------------------------------------------------------#pragma NOIV // Do not generate interrupt vectors不产生中断向量#include "fx2.h"#include "fx2regs.h"#include "syncdly.h" // SYNCDELAY macro 同步宏extern BOOL GotSUD; // Received setup data flag 接受设置数据标志extern BOOL Sleep; //extern BOOL Rwuen;extern BOOL Selfpwr;BYTE Configuration; // Current configuration 当前配置BYTE AlternateSetting; // Alternate settings 可替代的设置#define VR_NAKALL_ON 0xD0#define VR_NAKALL_OFF 0xD1void user_init(void){OEA|=0x03;}//-----------------------------------------------------------------------------// Task Dispatcher hooks 任务收发钩子 // The following hooks are called by the task dispatcher.//-----------------------------------------------------------------------------void TD_Init(void) // Called once at startup 一旦开始就开始唤醒{CPUCS = 0x10;IFCONFIG = 0xCB;FIFORESET = 0x80; // reset all FIFOs重置fifoSYNCDELAY;FIFORESET = 0x02;SYNCDELAY;FIFORESET = 0x04;SYNCDELAY;FIFORESET = 0x06;SYNCDELAY;FIFORESET = 0x08;SYNCDELAY;FIFORESET = 0x00;SYNCDELAY;PINFLAGSAB = 0xCB; SYNCDELAY; PINFLAGSCD = 0x00;SYNCDELAY; PORTACFG = 0x00; SYNCDELAY;FIFOPINPOLAR = 0x00; SYNCDELAY;EP2AUTOINLENH = 0x04;SYNCDELAY; EP2AUTOINLENL = 0x00;SYNCDELAY;EP1OUTCFG = 0xA0;EP1INCFG = 0xA0;SYNCDELAY; EP2FIFOCFG = 0x4D; EP2CFG = 0xEB;SYNCDELAY; EP4CFG = 0x00;SYNCDELAY; EP6CFG = 0x00;SYNCDELAY; EP8FIFOCFG = 0x31; EP8CFG = 0xA0; AUTOPTRSETUP |= 0x01; }void TD_Poll(void) {}BOOL TD_Suspend(void) // Called before the device goes into suspend mode在设备挂起之前被唤醒{ return(TRUE);}BOOL TD_Resume(void) // Called after the device resumes 设备恢复之后被唤醒{ return(TRUE);}//-----------------------------------------------------------------------------// Device Request hooks 设备请求钩子// The following hooks are called by the end point 0 device request parser. 在最后一个端点0设备请求分析 钩子被访问//-----------------------------------------------------------------------------BOOL DR_GetDescriptor(void){ return(TRUE);}BOOL DR_SetConfiguration(void) // Called when a Set Configuration command is received 当设置包被接受到时call{ Configuration = SETUPDAT[2]; return(TRUE); // Handled by user code 通过用户代码操作}BOOL DR_GetConfiguration(void) // Called when a Get Configuration command is received 当请求包被接受到时被访问{ EP0BUF[0] = Configuration; EP0BCH = 0; EP0BCL = 1; return(TRUE); // Handled by user code}BOOL DR_SetInterface(void) // Called when a Set Interface command is received 当接口设置名令被接收到时被访问{ AlternateSetting = SETUPDAT[2]; return(TRUE); // Handled by user code}BOOL DR_GetInterface(void) // Called when a Set Interface command is received 当设置接口命令被接收到时被访问{ EP0BUF[0] = AlternateSetting; EP0BCH = 0; EP0BCL = 1; return(TRUE); // Handled by user code}BOOL DR_GetStatus(void){ return(TRUE);}BOOL DR_ClearFeature(void){ return(TRUE);}BOOL DR_SetFeature(void){ return(TRUE);}BOOL DR_VendorCmnd(void){ BYTE tmp; switch (SETUPDAT[1]) { case VR_NAKALL_ON: tmp = FIFORESET; tmp |= bmNAKALL; SYNCDELAY; FIFORESET = tmp; break; case VR_NAKALL_OFF: tmp = FIFORESET; tmp &= ~bmNAKALL; SYNCDELAY; FIFORESET = tmp; break; default: return(TRUE); } return(FALSE);}//-----------------------------------------------------------------------------// USB Interrupt Handlers 中断处理程序// The following functions are called by the USB interrupt jump table. 下面的程序功能在产生usb中断跳转表 时被访问//-----------------------------------------------------------------------------// Setup Data Available Interrupt Handler设置可用的数据中断处理程序void ISR_Sudav(void) interrupt 0{ GotSUD = TRUE; // Set flag设置标志 EZUSB_IRQ_CLEAR(); USBIRQ = bmSUDAV; // Clear SUDAV IRQ 清除设备就绪中断请求}// Setup Token Interrupt Handler 设置请求的中断处理程序void ISR_Sutok(void) interrupt 0{ EZUSB_IRQ_CLEAR(); USBIRQ = bmSUTOK; // Clear SUTOK IRQ 清除设备就绪中断请求}void ISR_Sof(void) interrupt 0{ EZUSB_IRQ_CLEAR(); USBIRQ = bmSOF; // Clear SOF IRQ 清楚sof中断请求}void ISR_Ures(void) interrupt 0{ // whenever we get a USB reset, we should revert to full speed mode无论什么时候的usb复位，我们都应该回复全速模式 pConfigDscr = pFullSpeedConfigDscr; ((CONFIGDSCR xdata *) pConfigDscr)->type = CONFIG_DSCR; pOtherConfigDscr = pHighSpeedConfigDscr; ((CONFIGDSCR xdata *) pOtherConfigDscr)->type = OTHERSPEED_DSCR; EZUSB_IRQ_CLEAR(); USBIRQ = bmURES; // Clear URES IRQ清除uses中断请求}void ISR_Susp(void) interrupt 0{ Sleep = TRUE; EZUSB_IRQ_CLEAR(); USBIRQ = bmSUSP;}void ISR_Highspeed(void) interrupt 0{ if (EZUSB_HIGHSPEED()) { pConfigDscr = pHighSpeedConfigDscr; ((CONFIGDSCR xdata *) pConfigDscr)->type = CONFIG_DSCR; pOtherConfigDscr = pFullSpeedConfigDscr; ((CONFIGDSCR xdata *) pOtherConfigDscr)->type = OTHERSPEED_DSCR; } EZUSB_IRQ_CLEAR(); USBIRQ = bmHSGRANT;}void ISR_Ep0ack(void) interrupt 0{}void ISR_Stub(void) interrupt 0{}void ISR_Ep0in(void) interrupt 0{}void ISR_Ep0out(void) interrupt 0{}void ISR_Ep1in(void) interrupt 0{}void ISR_Ep1out(void) interrupt 0{}void ISR_Ep2inout(void) interrupt 0{}void ISR_Ep4inout(void) interrupt 0{}void ISR_Ep6inout(void) interrupt 0{}void ISR_Ep8inout(void) interrupt 0{}void ISR_Ibn(void) interrupt 0{}void ISR_Ep0pingnak(void) interrupt 0{}void ISR_Ep1pingnak(void) interrupt 0{}void ISR_Ep2pingnak(void) interrupt 0{}void ISR_Ep4pingnak(void) interrupt 0{}void ISR_Ep6pingnak(void) interrupt 0{}void ISR_Ep8pingnak(void) interrupt 0{}void ISR_Errorlimit(void) interrupt 0{}void ISR_Ep2piderror(void) interrupt 0{}void ISR_Ep4piderror(void) interrupt 0{}void ISR_Ep6piderror(void) interrupt 0{}void ISR_Ep8piderror(void) interrupt 0{}void ISR_Ep2pflag(void) interrupt 0{}void ISR_Ep4pflag(void) interrupt 0{}void ISR_Ep6pflag(void) interrupt 0{}void ISR_Ep8pflag(void) interrupt 0{}void ISR_Ep2eflag(void) interrupt 0{}void ISR_Ep4eflag(void) interrupt 0{}void ISR_Ep6eflag(void) interrupt 0{}void ISR_Ep8eflag(void) interrupt 0{}void ISR_Ep2fflag(void) interrupt 0{}void ISR_Ep4fflag(void) interrupt 0{}void ISR_Ep6fflag(void) interrupt 0{}void ISR_Ep8fflag(void) interrupt 0{}void ISR_GpifComplete(void) interrupt 0{}void ISR_GpifWaveform(void) interrupt 0{}void DR_SetData(void){ EP0BUF[0]=0xAB; EP0BCH=0; EP0BCL=2; EZUSB_Delay(100); //系统自带的函数 IOD=EP0BUF[1]; EP6FIFOBUF[0]=0x07; EP6FIFOBUF[1]=0x06; EP0CS |= bmHSNAK; }EZUSB.LIB 库文件
ipregs.h寄存器定义的头文件
syncdly.h同步延时宏定义
usbjmptb.OBJ包括中断向量地址的OBJ代码