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由于要用fpga给电脑传输视频信息，所以决定用cypress公司的cy7c68013A来作为usb、设备的主控芯片，看了好2周的usb的书，基本上算是把大概的协议搞清楚了，今天开始着手开发固件，这些示例都是以官方示例的基础上更改过来的。
dscr.a51。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 18
DSCR_CONFIG_LEN equ 9
DSCR_INTRFC_LEN equ 9
DSCR_ENDPNT_LEN equ 7
DSCR_DEVQUAL_LEN equ 10
ET_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, UserDscr
DSCR 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id vid
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 ;; Reserved
HighSpeedConfigDscr:
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 (div 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 interval
HighSpeedConfigDscrEnd:
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 (div 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 interval
FullSpeedConfigDscrEnd:
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',00
StringDscr1End:
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',00
StringDscr2End:
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 flag
WORD pDeviceDscr; // Pointer to Device Descriptor; Descriptors may be moved
WORD 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 dispatcher
void 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 parser
void 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 handler
void 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 0xD1
void 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fifo
SYNCDELAY;
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
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