Hola:
Cada vez más veo que a pesar de que los puertos series y paralelo se usan más sobre todas aquellas personas que están aprendiendo a controlar sea con Visual Basic, Visual C#, Visual C++, etc...
Me gustaría saber si alguien tiene experiencia en el tema de USB. Lo bueno que Microchip tiene los controladores par hacerlo más fácil.
Lo puedes ver aquí en los primeros enlaces.
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1410
Saludo.
Cada vez más veo que a pesar de que los puertos series y paralelo se usan más sobre todas aquellas personas que están aprendiendo a controlar sea con Visual Basic, Visual C#, Visual C++, etc...
Me gustaría saber si alguien tiene experiencia en el tema de USB. Lo bueno que Microchip tiene los controladores par hacerlo más fácil.
Código:
; Software License Agreement
;
; The software supplied herewith by Microchip Technology Incorporated (the "Company")
; for its PICmicro(r) Microcontroller is intended and supplied to you, the Company's
; customer, for use solely and exclusively on Microchip PICmicro Microcontroller
; products.
;
; The software is owned by the Company and/or its supplier, and is protected under
; applicable copyright laws. All rights are reserved. Any use in violation of the
; foregoing restrictions may subject the user to criminal sanctions under applicable
; laws, as well as to civil liability for the breach of the terms and conditions of
; this license.
;
; THIS SOFTWARE IS PROVIDED IN AN "AS IS" CONDITION. NO WARRANTIES, WHETHER EXPRESS,
; IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
; MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. THE
; COMPANY SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR
; CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
;
; ###############################################################################
; filename: DESCRIPT.ASM
;
; This file contains a set of descriptors for a standard mouse.
;
; ###############################################################################
;
; Author: Dan Butler and Reston Condit
; Company: Microchip Technology Inc
;
; Revision: 1.25
; Date: 23 April 2002
; Assembled using: MPASM 2.80
;################################################################################
;
; include files:
; P16C765.inc Rev 1.00
; usb_defs.inc Rev 1.10
;
;################################################################################
#include <p16C765.inc>
#include "usb_defs.inc"
USBBANK code
global Config_desc_index
global Report_desc_index
global Descriptions
global string_index
global DeviceDescriptor
global ReportDescriptor
global ReportDescriptorLen
global String0
global String0_end
global StringDescriptions
global HID_Descriptor
extern EP0_start
extern temp ; temp var used in get config index
extern temp2 ; another temp, in bank2
; ******************************************************************
; Given a configuration descriptor index, returns the beginning address
; of the descriptor within the descriptions table
; ******************************************************************
Config_desc_index
movwf temp
movlw HIGH CDI_start
movwf PCLATH
movlw low CDI_start
addwf temp,w
btfsc STATUS,C
incf PCLATH,f
movwf PCL
CDI_start ; this table calculates the offsets for each
retlw low Config1 ; configuration descriptor from the beginning
retlw high Config1 ; of the table
; more configurations can be added here
; retlw low Config2
; retlw high Config2
; etc....
; ******************************************************************
; Given a report descriptor index, returns the beginning address
; of the descriptor within the descriptions table
; ******************************************************************
Report_desc_index
movwf temp
movlw HIGH RDI_start
movwf PCLATH
movlw low RDI_start
addwf temp,w
btfsc STATUS,C
incf PCLATH,f
movwf PCL
RDI_start ; this table calculates the offsets for each report
retlw low ReportDescriptorLen ; descriptor from the beginning
retlw high ReportDescriptorLen ; of the table, effectively
; more reports can be added here
; retlw low ReportDescriptorLen2
; retlw high ReportDescriptorLen2
; etc....
; ******************************************************************
; This table is polled by the host immediately after USB Reset has been released.
; This table defines the maximum packet size EP0 can take.
; See section 9.6.1 of the Rev 1.0 USB specification.
; These fields are application DEPENDENT. Modify these to meet
; your specifications.
; the offset is passed in P0 and P1 (P0 is low order byte).
; ******************************************************************
Descriptions
banksel EP0_start
movf EP0_start+1,w
movwf PCLATH
movf EP0_start,w
movwf PCL
DeviceDescriptor
StartDevDescr
retlw 0x12 ; bLengthLength of this descriptor
retlw 0x01 ; bDescType This is a DEVICE descriptor
retlw 0x10 ; bcdUSBUSB revision 1.10 (low byte)
retlw 0x01 ; high byte
retlw 0x00 ; bDeviceClasszero means each interface operates independently
retlw 0x00 ; bDeviceSubClass
retlw 0x00 ; bDeviceProtocol
retlw 0x08 ; bMaxPacketSize0 - inited in UsbInit()
retlw 08 ; idVendor - 0x04D8 is Microchip Vendor ID
retlw 0x04 ; high order byte
retlw 0x00 ; idProduct
retlw 0x00
retlw 0x41 ; bcdDevice
retlw 0x04
retlw 0x01 ; iManufacturer
retlw 0x02 ; iProduct
retlw 0x00 ; iSerialNumber - 3
retlw NUM_CONFIGURATIONS ; bNumConfigurations
; ******************************************************************
; This table is retrieved by the host after the address has been set.
; This table defines the configurations available for the device.
; See section 9.6.2 of the Rev 1.0 USB specification (page 184).
; These fields are application DEPENDENT.
; Modify these to meet your specifications.
; ******************************************************************
Config1
retlw 0x09 ; bLengthLength of this descriptor
retlw 0x02 ; bDescType2 = CONFIGURATION
retlw EndConfig1 - Config1
retlw 0x00
retlw 0x01 ; bNumInterfacesNumber of interfaces
retlw 0x01 ; bConfigValueConfiguration Value
retlw 0x04 ; iConfigString Index for this config = #01
retlw 0xA0 ; bmAttributesattributes - bus powered
retlw 0x32 ; MaxPowerself-powered draws 0 mA from the bus.
Interface1
retlw 0x09 ; length of descriptor
retlw INTERFACE
retlw 0x00 ; number of interface, 0 based array
retlw 0x00 ; alternate setting
retlw 0x01 ; number of endpoints used in this interface
retlw 0x03 ; interface class - assigned by the USB
retlw 0x01 ; boot device
retlw 0x02 ; interface protocol - mouse
retlw 0x05 ; index to string descriptor that describes this interface
HID_Descriptor
retlw 0x09 ; descriptor size (9 bytes)
retlw 0x21 ; descriptor type (HID)
retlw 0x00
retlw 0x01 ; HID class release number (1.00)
retlw 0x00 ; Localized country code (none)
retlw 0x01 ; # of HID class descriptor to follow (1)
retlw 0x22 ; Report descriptor type (HID)
retlw (end_ReportDescriptor - ReportDescriptor)
retlw 0x00
Endpoint1
retlw 0x07 ; length of descriptor
retlw ENDPOINT
retlw 0x81 ; EP1, In
retlw 0x03 ; Interrupt
retlw 0x04 ; max packet size (4 bytes) low order byte
retlw 0x00 ; max packet size (4 bytes) high order byte
retlw 0x0A ; polling interval (10ms)
EndConfig1
ReportDescriptorLen
retlw low (end_ReportDescriptor-ReportDescriptor)
ReportDescriptor
retlw 0x05
retlw 0x01 ; usage page (generic desktop)
retlw 0x09
retlw 0x02 ; usage (mouse)
retlw 0xA1
retlw 0x01 ; collection (application)
retlw 0x09
retlw 0x01 ;usage (pointer)
retlw 0xA1
retlw 0x00 ;collection (linked)
retlw 0x05
retlw 0x09 ; usage page (buttons)
retlw 0x19
retlw 0x01 ; usage minimum (1)
retlw 0x29
retlw 0x03 ; usage maximum (3)
retlw 0x15
retlw 0x00 ; logical minimum (0)
retlw 0x25
retlw 0x01 ; logical maximum (1)
retlw 0x95
retlw 0x03 ; report count (3)
retlw 0x75
retlw 0x01 ; report size (1)
retlw 0x81
retlw 0x02 ; input (3 button bits)
retlw 0x95
retlw 0x01 ; report count (1)
retlw 0x75
retlw 0x05 ; report size (5)
retlw 0x81
retlw 0x01 ; input (constant 5 bit padding)
retlw 0x05
retlw 0x01 ; usage page (generic desktop)
retlw 0x09
retlw 0x30 ; usage (X)
retlw 0x09
retlw 0x31 ; usage (Y)
retlw 0x15
retlw 0x81 ; logical minimum (-127)
retlw 0x25
retlw 0x7F ; logical maximum (127)
retlw 0x75
retlw 0x08 ; report size (8)
retlw 0x95
retlw 0x03 ; report count (2)
retlw 0x81
retlw 0x06 ; input (2 position bytes X & Y)
retlw 0xC0 ; end collection
retlw 0xC0 ; end collection
end_ReportDescriptor
StringDescriptions
banksel EP0_start
movf EP0_start+1,w
movwf PCLATH
movf EP0_start,w
movwf PCL
; ******************************************************************
; Given a configuration descriptor index, returns the beginning address
; of the descriptor within the descriptions table
; ******************************************************************
string_index ; langid in W reg, string offset in EP0_start
movwf temp
bcf STATUS,C
rlf temp, f
pagesel langid_index
call langid_index
movwf temp2
incf temp, f
pagesel langid_index
call langid_index
movwf temp
movf temp, w
movwf PCLATH
movf temp2,w
addwf EP0_start+1,w
btfsc STATUS,C
incf PCLATH, f
movwf PCL
langid_index
movlw high langids
movwf PCLATH
movlw low langids
addwf temp, w
btfsc STATUS,C
incf PCLATH,f
movwf PCL
langids
retlw low lang_1
retlw high lang_1
retlw low lang_2 ; string indexes of different languages
retlw high lang_2
lang_1 ; english
retlw low String0 ; LangIDs
retlw high String0
retlw low String1_l1
retlw high String1_l1
retlw low String2_l1
retlw high String2_l1
retlw low String3_l1
retlw high String3_l1
retlw low String4_l1
retlw high String4_l1
retlw low String5_l1
retlw high String5_l1
retlw low String6_l1
retlw high String6_l1
lang_2
retlw low String0 ; also point to LangID
retlw high String0
retlw low String1_l2
retlw high String1_l2
retlw low String2_l2
retlw high String2_l2
retlw low String3_l2
retlw high String3_l2
retlw low String4_l2
retlw high String4_l2
retlw low String5_l2
retlw high String5_l2
String0
retlw low (String1_l1 - String0) ; length of string
retlw 0x03 ; descriptor type 3?
retlw 0x09 ; language ID (as defined by MS 0x0409)
retlw 0x04
retlw 0x04 ; some other language ID for testing
retlw 0x08
String0_end
String1_l1
retlw String2_l1-String1_l1 ; length of string
retlw 0x03 ; string descriptor type 3
retlw 'M'
retlw 0x00
retlw 'i'
retlw 0x00
retlw 'c'
retlw 0x00
retlw 'r'
retlw 0x00
retlw 'o'
retlw 0x00
retlw 'c'
retlw 0x00
retlw 'h'
retlw 0x00
retlw 'i'
retlw 0x00
retlw 'p'
retlw 0x00
String2_l1
retlw String3_l1-String2_l1
retlw 0x03
retlw 'P'
retlw 0x00
retlw 'i'
retlw 0x00
retlw 'c'
retlw 0x00
retlw '1'
retlw 0x00
retlw '6'
retlw 0x00
retlw 'C'
retlw 0x00
retlw '7'
retlw 0x00
retlw '4'
retlw 0x00
retlw '5'
retlw 0x00
retlw '/'
retlw 0x00
retlw '7'
retlw 0x00
retlw '6'
retlw 0x00
retlw '5'
retlw 0x00
retlw ' '
retlw 0x00
retlw 'U'
retlw 0x00
retlw 'S'
retlw 0x00
retlw 'B'
retlw 0x00
retlw ' '
retlw 0x00
retlw 'M'
retlw 0x00
retlw 'o'
retlw 0x00
retlw 'u'
retlw 0x00
retlw 's'
retlw 0x00
retlw 'e'
retlw 0x00
String3_l1
retlw String4_l1-String3_l1
retlw 0x03
retlw 'V'
retlw 0x00
retlw '1'
retlw 0x00
retlw '.'
retlw 0x00
retlw '1'
retlw 0x00
retlw '1'
retlw 0x00
String4_l1
retlw String5_l1-String4_l1
retlw 0x03
retlw 'C'
retlw 0x00
retlw 'f'
retlw 0x00
retlw 'g'
retlw 0x00
retlw '1'
retlw 0x00
String5_l1
retlw String6_l1-String5_l1
retlw 0x03
retlw 'E'
retlw 0x00
retlw 'P'
retlw 0x00
retlw '1'
retlw 0x00
retlw '0'
retlw 0x00
retlw 'I'
retlw 0x00
retlw 'n'
retlw 0x00
String6_l1
String1_l2 ; lang 2, chinese. String can be totally different than english
retlw String2_l2-String1_l2 ; length of string
retlw 0x03 ; string descriptor type 3
retlw 'M'
retlw 0x00
retlw 'i'
retlw 0x00
retlw 'c'
retlw 0x00
retlw 'r'
retlw 0x00
retlw 'o'
retlw 0x00
retlw 'c'
retlw 0x00
retlw 'h'
retlw 0x00
retlw 'i'
retlw 0x00
retlw 'p'
retlw 0x00
String2_l2
retlw String3_l2-String2_l2
retlw 0x03
retlw 'P'
retlw 0x00
retlw 'i'
retlw 0x00
retlw 'c'
retlw 0x00
retlw '1'
retlw 0x00
retlw '6'
retlw 0x00
retlw 'C'
retlw 0x00
retlw '7'
retlw 0x00
retlw '4'
retlw 0x00
retlw '5'
retlw 0x00
retlw '/'
retlw 0x00
retlw '7'
retlw 0x00
retlw '6'
retlw 0x00
retlw '5'
retlw 0x00
retlw ' '
retlw 0x00
retlw 'U'
retlw 0x00
retlw 'S'
retlw 0x00
retlw 'B'
retlw 0x00
retlw ' '
retlw 0x00
retlw 'M'
retlw 0x00
retlw 'o'
retlw 0x00
retlw 'u'
retlw 0x00
retlw 's'
retlw 0x00
retlw 'e'
retlw 0x00
String3_l2
retlw String4_l2-String3_l2
retlw 0x03
retlw 'V'
retlw 0x00
retlw '1'
retlw 0x00
retlw '.'
retlw 0x00
retlw '1'
retlw 0x00
retlw '1'
retlw 0x00
String4_l2
retlw String5_l2-String4_l2
retlw 0x03
retlw 'C'
retlw 0x00
retlw 'f'
retlw 0x00
retlw 'g'
retlw 0x00
retlw '1'
retlw 0x00
String5_l2
retlw String6_l2-String5_l2
retlw 0x03
retlw 'E'
retlw 0x00
retlw 'P'
retlw 0x00
retlw '1'
retlw 0x00
retlw '0'
retlw 0x00
retlw 'I'
retlw 0x00
retlw 'n'
retlw 0x00
String6_l2
end
Lo puedes ver aquí en los primeros enlaces.
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1410
Saludo.