dscr.a51

usb的程序与编程

;;-----------------------------------------------------------------------------
;;   File:      dscr.a51
;;   Contents:   This file contains descriptor data tables.  
;;
;;   Copyright (c) 2003 Cypress Semiconductor, Inc. All rights reserved
;;-----------------------------------------------------------------------------

   
DSCR_DEVICE   equ   1   ;; Descriptor type: Device
DSCR_CONFIG   equ   2   ;; Descriptor type: Configuration
DSCR_STRING   equ   3   ;; Descriptor type: String
DSCR_INTRFC   equ   4   ;; Descriptor type: Interface
DSCR_ENDPNT   equ   5   ;; Descriptor type: Endpoint
DSCR_DEVQUAL  equ   6   ;; Descriptor type: Device Qualifier

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
ET_ISO       equ   1   ;; Endpoint type: Isochronous
ET_BULK      equ   2   ;; Endpoint type: Bulk
ET_INT       equ   3   ;; Endpoint type: Interrupt

public      DeviceDscr, DeviceQualDscr, HighSpeedConfigDscr, FullSpeedConfigDscr, StringDscr, UserDscr

;DSCR   SEGMENT   CODE

;;-----------------------------------------------------------------------------
;; Global Variables
;;-----------------------------------------------------------------------------
;      rseg DSCR     ;; locate the descriptor table in on-part memory.

CSEG   AT 100H


DeviceDscr:   
      db   DSCR_DEVICE_LEN      ;; Descriptor length
      db   DSCR_DEVICE   ;; 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
      dw   0B404H      ;; Vendor ID
      dw   0310H      ;; Product ID (Sample Device)
      dw   0000H      ;; Product version ID
      db   1         ;; Manufacturer string index
      db   2         ;; Product string index
      db   0         ;; Serial number string index
      db   1         ;; Number of configurations

org (($ / 2) +1) * 2

DeviceQualDscr:
      db   DSCR_DEVQUAL_LEN   ;; Descriptor length
      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

org (($ / 2) +1) * 2

HighSpeedConfigDscr:   
      db   DSCR_CONFIG_LEN               ;; Descriptor length
      db   DSCR_CONFIG                  ;; Descriptor type
      db   (HighSpeedConfigDscrEnd-HighSpeedConfigDscr) mod 256 ;; Total Length (LSB)
      db   (HighSpeedConfigDscrEnd-HighSpeedConfigDscr)  /  256 ;; Total Length (MSB)
      db   1      ;; Number of interfaces
      db   1      ;; Configuration number
      db   0      ;; Configuration string
      db   10100000b   ;; Attributes (b7 - buspwr, b6 - selfpwr, b5 - rwu)
      db   50      ;; Power requirement (div 2 ma)

;; Alt Interface 0 Descriptor - Bulk IN
      db   DSCR_INTRFC_LEN   ;; Descriptor length
      db   DSCR_INTRFC       ;; Descriptor type
      db   0                 ;; Zero-based index of this interface
      db   0                 ;; Alternate setting
      db   1                 ;; 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 This would be nice to add!
      
;; Bulk IN Endpoint Descriptor
      db   DSCR_ENDPNT_LEN   ;; Descriptor length
      db   DSCR_ENDPNT       ;; Descriptor type
      db   82H               ;; Endpoint 2 and direction IN
      db   ET_BULK           ;; Endpoint type
      db   00H               ;; Maximun packet size (LSB)
      db   02H               ;; Max packect size (MSB)  512 byte packets/uFrame
      db   00H               ;; Polling interval

;; Alt Interface 1 Descriptor - Bulk OUT
      db   DSCR_INTRFC_LEN   ;; Descriptor length
      db   DSCR_INTRFC       ;; Descriptor type
      db   0                 ;; Zero-based index of this interface
      db   1                 ;; Alternate setting
      db   1                 ;; 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 This would be nice to add!
      
;; Bulk OUT Endpoint Descriptor
      db   DSCR_ENDPNT_LEN   ;; Descriptor length
      db   DSCR_ENDPNT       ;; Descriptor type
      db   2H                ;; Endpoint 2 and direction OUT
      db   ET_BULK           ;; Endpoint type
      db   00H               ;; Maximun packet size (LSB) 
      db   02H               ;; Max packect size (MSB) 512 byte packets/uFrame
      db   00H               ;; Polling interval

;; Alt Interface 2 Descriptor - Bulk IN-OUT
      db   DSCR_INTRFC_LEN   ;; Descriptor length
      db   DSCR_INTRFC       ;; Descriptor type
      db   0                 ;; Zero-based index of this interface
      db   2                 ;; Alternate setting
      db   2                 ;; 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 This would be nice to add!
      
;; Bulk IN Endpoint Descriptor
      db   DSCR_ENDPNT_LEN   ;; Descriptor length
      db   DSCR_ENDPNT       ;; Descriptor type
      db   82H               ;; Endpoint 2 and direction IN
      db   ET_BULK           ;; Endpoint type
      db   00H               ;; Maximun packet size (LSB) 512 byte packets/uFrame
      db   02H               ;; Max packect size (MSB)
      db   00H               ;; Polling interval

;; Bulk OUT Endpoint Descriptor
      db   DSCR_ENDPNT_LEN   ;; Descriptor length
      db   DSCR_ENDPNT       ;; Descriptor type
      db   06H               ;; Endpoint 6 and direction OUT
      db   ET_BULK           ;; Endpoint type
      db   00H               ;; Maximun packet size (LSB) 
      db   02H               ;; Max packect size (MSB) 512 byte packets/uFrame
      db   00H               ;; Polling interval


;; Alt. Interface 3 Descriptor - Isoc IN 3x1024 byte packets/uFrame
      db   DSCR_INTRFC_LEN   ;; Descriptor length
      db   DSCR_INTRFC       ;; Descriptor type
      db   0                 ;; Zero-based index of this interface
      db   3                 ;; Alternate setting
      db   1                 ;; 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. This would be nice to add!

;; Isoc IN Endpoint Descriptor 
      db   DSCR_ENDPNT_LEN   ;; Descriptor length
      db   DSCR_ENDPNT       ;; Descriptor type
      db   82H               ;; Endpoint 2 and direction IN
      db   ET_ISO            ;; Endpoint type
      db   00H               ;; Maximun packet size (LSB)
      db   14H               ;; Max packect size (MSB) 10100b 3x1024 byte packets/uFrame
      db   01H               ;; Polling interval

;; Alt. Interface 4 Descriptor - Isoc OUT 3x1024 byte packets/uFrame
      db   DSCR_INTRFC_LEN   ;; Descriptor length
      db   DSCR_INTRFC       ;; Descriptor type
      db   0                 ;; Zero-based index of this interface
      db   4                 ;; Alternate setting
      db   1                 ;; 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 This would be nice to add!
      
;; Isoc OUT Endpoint Descriptor
      db   DSCR_ENDPNT_LEN   ;; Descriptor length
      db   DSCR_ENDPNT       ;; Descriptor type
      db   02H               ;; Endpoint 2 and direction OUT
      db   ET_ISO            ;; Endpoint type
      db   00H               ;; Maximun packet size (LSB) 
      db   14H               ;; Max packect size (MSB) 10100b 3x1024 byte packets/uFrame
      db   01H               ;; Polling interval

;; Alt. Interface 5 Descriptor - Isoc IN 1x1024 byte packets/uFrame
      db   DSCR_INTRFC_LEN   ;; Descriptor length
      db   DSCR_INTRFC       ;; Descriptor type
      db   0                 ;; Zero-based index of this interface
      db   5                 ;; Alternate setting
      db   1                 ;; Number of end points 
      db   0ffH              ;; Interface class
      db   00H               ;; Interface sub class