USB pic18f4550 USB COMPOSITE DEVICE

**Saitama** · - 3rd April 2023, 18:26

Hello everyone.
I always try to use microde studio for many of my projects because of the speed and ease of reading the code, with its disadvantages such as higher space usage per program and a very small community, I use it because its benefits are greater. among my projects I need to create a composite device, searching the internet I have not found precise information on this topic, not even an example.
I have worked on this and I have achieved something that is close to achieving it,
At this point I think I need to properly address the second device endpoints.
I have analyzed pbppic18.mac USBOUT-->L?CALL PutUSB and the respective usb_dev.asm where I find that I can address correctly without modifying the code because the required Endpoint has been correctly stored in FSR0L. Despite my poor understanding, I have so far modified the usb_mem.asm, usb_dev.inc, and usb_hid.asm files.
The result of this has been that the PC recognizes the composite device correctly and interface 0 communicates (with some easily fixable glitches), but interface 1 is not heard. I think this potential problem is in usb_hid.asm, because invoking endpoint 82 I think it sends to both endpoints 81 and 82, causing me to lose data on device 0 and abort receiving from device 1

I need some help to find a solution to this problem, if you can help with any contribution I will be very grateful
DES_FirmAC01.bas

Code:


' USB descriptors for a HID device
'USBMEMORYADDRESS Con    $400    ' USB RAM starts here (set in device header file)
USBMEMORYSIZE    Con    256    ' USB RAM size in bytes
USBReservedMemory Var Byte[USBMEMORYSIZE] USBMEMORYADDRESS    ' Reserve memory used by USB assembler code


goto    hid_desc_end    ' Skip over all of the USB assembler code
asm


#define    USB_EP0_BUFF_SIZE     8    ; 8, 16, 32, or 64
#define    USB_MAX_NUM_INT        2    ; For tracking Alternate Setting
#define    USB_MAX_EP_NUMBER      2    ; UEP1
#define    NUM_CONFIGURATIONS    1
#define    NUM_INTERFACES        2


#define UCFG_VAL    USB_PULLUP_ENABLE|USB_INTERNAL_TRANSCEIVER|USB_FULL_SPEED|USB_PING_PONG__NO_PING_PONG
;#define UCFG_VAL    USB_PULLUP_ENABLE|USB_INTERNAL_TRANSCEIVER|USB_LOW_SPEED|USB_PING_PONG__NO_PING_PONG


;#define USE_SELF_POWER_SENSE_IO
;#define USE_USB_BUS_SENSE_IO


#define USB_POLLING


; HID
; Endpoints Allocation
#define    HID_INTF_ID          0x00
#define    HID_EP              1
#define    HID_INT_OUT_EP_SIZE      16
#define    HID_INT_IN_EP_SIZE      16


#define HID_DEV_INTF_ID       0x01
#define HID_DEV_EP            2
#define HID_DEV_INT_OUT_EP_SIZE   16
#define HID_DEV_INT_IN_EP_SIZE    16


#define HID_NUM_OF_DSC        1


   include    "usb_hid.asm"    ; Include rest of USB files, starting with HID class code


; ******************************************************************
; 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.
; ******************************************************************
DeviceDescriptor
    retlw    (EndDeviceDescriptor-DeviceDescriptor)/2    ; bLength Length of this descriptor
    retlw    USB_DESCRIPTOR_DEVICE ; bDescType This is a DEVICE descriptor
    retlw    0x00        ; bcdUSBUSB Revision 1.10 (low byte)
    retlw    0x02        ; high byte
    retlw    0x00        ; bDeviceClass zero means each interface operates independently
    retlw    0x00        ; bDeviceSubClass
    retlw    0x00        ; bDeviceProtocol
    retlw    USB_EP0_BUFF_SIZE ; bMaxPacketSize for EP0


        ; idVendor (low byte, high byte)
    retlw    0xD9
    retlw    0x04


        ; idProduct (low byte, high byte)
    retlw    0x3C
    retlw    0x00


    retlw    0x00          ; bcdDevice (low byte)
    retlw    0x01         ; (high byte)
    retlw    0x01         ; iManufacturer (string index)
    retlw    0x02         ; iProduct      (string index) 
    retlw    0x03         ; iSerialNumber (string index)
    retlw    NUM_CONFIGURATIONS ; bNumConfigurations
EndDeviceDescriptor


; ******************************************************************
; 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.
; ******************************************************************
; Configuration pointer table
USB_CD_Ptr
Configs
    db    low Config1, high Config1
    db    upper Config1, 0


; Configuration Descriptor
Config1
    retlw    (Interface1-Config1)/2    ; bLength Length of this descriptor
    retlw    USB_DESCRIPTOR_CONFIGURATION ; bDescType 2=CONFIGURATION
Config1Len
    retlw    low ((EndConfig1 - Config1)/2)    ; Length of this configuration
    retlw    high ((EndConfig1 - Config1)/2)
    retlw    NUM_INTERFACES        ; bNumInterfaces Number of interfaces
    retlw    0x01        ; bConfigValue Configuration Value
    retlw    0x00        ; iConfig (string index)
    retlw    _DEFAULT|_SELF    ; bmAttributes attributes - bus powered  
    retlw    0x32     ; Max power consumption (2X mA)
Interface1
    retlw    (HIDDescriptor1-Interface1)/2    ; length of descriptor
    retlw    USB_DESCRIPTOR_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    0x00        ; boot device
    retlw    0x00        ; interface protocol
    retlw     0x04        ; index to string descriptor that describes this interface
HIDDescriptor1
    retlw    (Endpoint1In-HIDDescriptor1)/2    ; descriptor size (9 bytes)
    retlw    DSC_HID        ; descriptor type (HID)
    retlw    0x11        ; HID class release number (1.11)
    retlw    0x01
    retlw    0x00        ; Localized country code (none)
    retlw    0x01        ; # of HID class descriptor to follow (1)
    retlw    0x22        ; Report descriptor type (HID)
ReportDescriptor1Len
    retlw    low ((EndReportDescriptor1-ReportDescriptor1)/2)
    retlw    high ((EndReportDescriptor1-ReportDescriptor1)/2)
Endpoint1In
    retlw    (Interface2-Endpoint1In)/2    ; length of descriptor
    retlw    USB_DESCRIPTOR_ENDPOINT
    retlw    HID_EP|_EP_IN        ; EP1, In
    retlw    _INT        ; Interrupt
    retlw    low (HID_INT_IN_EP_SIZE)        ; This should be the size of the endpoint buffer
    retlw    high (HID_INT_IN_EP_SIZE)
    retlw    0x01                        ; Polling interval
;EndPoint1Out
;    retlw    (Interface2-EndPoint1Out)/2    ; Length of this Endpoint Descriptor
;    retlw    USB_DESCRIPTOR_ENDPOINT        ; bDescriptorType = 5 for Endpoint Descriptor
;    retlw    HID_EP|_EP_OUT        ; Endpoint number & direction
;    retlw    _INT        ; Transfer type supported by this Endpoint
;    retlw    low (HID_INT_OUT_EP_SIZE)        ; This should be the size of the endpoint buffer
;    retlw    high (HID_INT_OUT_EP_SIZE)
;    retlw    0x01                        ; Polling interval
Interface2
    retlw   (HIDDescriptor2-Interface2)/2   ; length of descriptor
    retlw   USB_DESCRIPTOR_INTERFACE        ; INTERFACE descriptor type
    retlw   0x01        ; 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   0x00        ; boot device
    retlw   0x00        ; interface protocol
    retlw   0x04        ; index to string descriptor that describes this interface
HIDDescriptor2
    retlw   (Endpoint2In-HIDDescriptor2)/2  ; descriptor size (9 bytes)
    retlw   DSC_HID     ; descriptor type (HID)
    retlw   0x11        ; HID class release number (1.11)
    retlw   0x01
    retlw   0x00        ; Localized country code (none)
    retlw   0x01        ; # of HID class descriptor to follow (1)
    retlw   0x22        ; Report descriptor type (HID)
ReportDescriptor2Len
    retlw   low ((EndReportDescriptor2-ReportDescriptor2)/2)
    retlw   high ((EndReportDescriptor2-ReportDescriptor2)/2)
Endpoint2In
    retlw   (EndConfig1-Endpoint2In)/2    ; length of descriptor
    retlw   USB_DESCRIPTOR_ENDPOINT
    retlw   HID_DEV_EP|_EP_IN       ; EP2, In
    retlw   _INT        ; Interrupt
    retlw   low (HID_DEV_INT_IN_EP_SIZE)        ; This should be the size of the endpoint buffer
    retlw   high (HID_DEV_INT_IN_EP_SIZE)
    retlw   0x01                        ; Polling interval
;EndPoint2Out
;    retlw   (EndConfig1-EndPoint2Out)/2 ; Length of this Endpoint Descriptor
;    retlw   USB_DESCRIPTOR_ENDPOINT     ; bDescriptorType = 5 for Endpoint Descriptor
;    retlw   HID_DEV_EP|_EP_OUT      ; Endpoint number & direction
;    retlw   _INT        ; Transfer type supported by this Endpoint
;    retlw   low (HID_DEV_INT_OUT_EP_SIZE)       ; This should be the size of the endpoint buffer
;    retlw   high (HID_DEV_INT_OUT_EP_SIZE)
;    retlw   0x01                        ; Polling interval
EndConfig1


ReportDescriptor1
    retlw   0x05 ; USAGE_PAGE (generic desktop Choose the usage page "mouse" is on      
    retlw   0x01 ; LOW
    
    retlw   0x09 ; USAGE Device is a Gamepad        
    retlw   0x05 ; LOW
    
    retlw   0xA1 ; COLLECTION (APPLICATION)     
    retlw   0x01 ; LOW
    
    retlw   0x85 ; REPORT_ID (1 Pad1)
    retlw   0x01 ; LOW
    
    retlw   0xA1 ; Colection Physycal       
    retlw   0x00 ; LOW
    
    retlw   0x09 ; usage x      
    retlw   0x30 ;
    
    retlw   0x09 ; usage y      
    retlw   0x31 ;
        
    retlw   0x15 ; logical minimun 0
    retlw   0x00 ;
    
    retlw   0x26 ; logical maximun 1023
    retlw   0xFF ;
    retlw   0x03 ;
    
    retlw   0x35 ; Physical Minimum (0)
    retlw   0x00 ;
    
    retlw   0x46 ; Physical Maximum (1023)
    retlw   0xFF ;
    retlw   0x03 ;
    
    retlw   0x95 ; REPORT_COUNT 2       
    retlw   0x02 ;
    
    retlw   0x75 ; report size 16       
    retlw   0x10 ;
    
    retlw   0x81 ; data,var,abs     
    retlw   0x02 ;
    
    retlw   0xC0 ; END_COLLECTION
;******************************************
    
    retlw   0xA1 ; Colection Physycal       
    retlw   0x00 ; LOW
    
    retlw   0x09 ; usage Rx     
    retlw   0x33 ;
    
    retlw   0x09 ; usage Ry     
    retlw   0x34 ;
        
    retlw   0x15 ; logical minimun 0
    retlw   0x00 ;
    
    retlw   0x26 ; logical maximun 2047
    retlw   0xFF ;
    retlw   0x03 ;
    
    retlw   0x35 ; Physical Minimum (0)
    retlw   0x00 ;
    
    retlw   0x46 ; Physical Maximum (2047)
    retlw   0xFF ;
    retlw   0x03 ;
    
    retlw   0x95 ; REPORT_COUNT 2       
    retlw   0x02 ;
    
    retlw   0x75 ; report size 16       
    retlw   0x10 ;
    
    retlw   0x81 ; data,var,abs     
    retlw   0x02 ;
    
    retlw   0xC0 ; END_COLLECTION
;******************************************


    retlw   0x05 ; USAGE_PAGE (Button)      
    retlw   0x09 ; low
    
    retlw   0x19 ; Usage Minimum (Button 1)
    retlw   0x01 ;
    
    retlw   0x29 ; Usage Maximum (Button 13)
    retlw   0x0D ;
    
    retlw   0x95 ; report count 13      
    retlw   0x0D ;
    
    retlw   0x75 ; report size 1        
    retlw   0x01 ;
    
    retlw   0x81 ; input data,var,abs       
    retlw   0x02 ;
    
    retlw   0x95 ; report count 1
    retlw   0x01 ;
    
    retlw   0x75 ; report size 3
    retlw   0x03 ;
    
    retlw   0x81 ; input Cnst,var,abs
    retlw   0x01 ;
    
    retlw   0xC0 ; END_COLLECTION


;***********************************************************************
;*                       GamePAD 2                                     *
;***********************************************************************


    retlw   0x05 ; USAGE_PAGE (generic desktop Choose the usage page "mouse" is on      
    retlw   0x01 ; LOW
    
    retlw   0x09 ; USAGE Device is a Gamepad        
    retlw   0x05 ; LOW
    
    retlw   0xA1 ; COLLECTION (APPLICATION)     
    retlw   0x01 ; LOW
    
    retlw   0x85 ; REPORT_ID (1 Pad1)
    retlw   0x02 ; LOW
    
    retlw   0xA1 ; Colection Physycal       
    retlw   0x00 ; LOW
    
    retlw   0x09 ; usage x      
    retlw   0x30 ;
    
    retlw   0x09 ; usage y      
    retlw   0x31 ;
        
    retlw   0x15 ; logical minimun 0
    retlw   0x00 ;
    
    retlw   0x26 ; logical maximun 1023
    retlw   0xFF ;
    retlw   0x03 ;
    
    retlw   0x35 ; Physical Minimum (0)
    retlw   0x00 ;
    
    retlw   0x46 ; Physical Maximum (1023)
    retlw   0xFF ;
    retlw   0x03 ;
    
    retlw   0x95 ; REPORT_COUNT 2       
    retlw   0x02 ;
    
    retlw   0x75 ; report size 16       
    retlw   0x10 ;
    
    retlw   0x81 ; data,var,abs     
    retlw   0x02 ;
    
    retlw   0xC0 ; END_COLLECTION
;******************************************
    
    retlw   0xA1 ; Colection Physycal       
    retlw   0x00 ; LOW
    
    retlw   0x09 ; usage Rx     
    retlw   0x33 ;
    
    retlw   0x09 ; usage Ry     
    retlw   0x34 ;
        
    retlw   0x15 ; logical minimun 0
    retlw   0x00 ;
    
    retlw   0x26 ; logical maximun 2047
    retlw   0xFF ;
    retlw   0x03 ;
    
    retlw   0x35 ; Physical Minimum (0)
    retlw   0x00 ;
    
    retlw   0x46 ; Physical Maximum (2047)
    retlw   0xFF ;
    retlw   0x03 ;
    
    retlw   0x95 ; REPORT_COUNT 2       
    retlw   0x02 ;
    
    retlw   0x75 ; report size 16       
    retlw   0x10 ;
    
    retlw   0x81 ; data,var,abs     
    retlw   0x02 ;
    
    retlw   0xC0 ; END_COLLECTION
;******************************************


    retlw   0x05 ; USAGE_PAGE (Button)      
    retlw   0x09 ; low
    
    retlw   0x19 ; Usage Minimum (Button 1)
    retlw   0x01 ;
    
    retlw   0x29 ; Usage Maximum (Button 13)
    retlw   0x0E ;
    
    retlw   0x95 ; report count 13      
    retlw   0x0E ;
    
    retlw   0x75 ; report size 1        
    retlw   0x01 ;
    
    retlw   0x81 ; input data,var,abs       
    retlw   0x02 ;
    
    retlw   0x95 ; report count 1
    retlw   0x01 ;
    
    retlw   0x75 ; report size 2
    retlw   0x02 ;
    
    retlw   0x81 ; input Cnst,var,abs
    retlw   0x01 ;
    
    retlw   0xC0 ; END_COLLECTION


EndReportDescriptor1


ReportDescriptor2
;***************************************
;*            Mouse Emu                *
;***************************************
    retlw   0x05 ; USAGE_PAGE (generic desktop)     
    retlw   0x01 ; LOW
    
    retlw   0x09 ; USAGE Mouse      
    retlw   0x02 ; LOW
    
    retlw   0xA1 ; COLLECTION (APPLICATION)     
    retlw   0x01 ; LOW
    
    retlw   0x85 ; REPORT_ID (1)
    retlw   0x01 ; LOW
    
    retlw   0x09 ; USAGE_PAGE (Pointer)     
    retlw   0x01 ; LOW
    
    retlw   0xA1 ; COLLECTION (Physical)    
    retlw   0x00 ;
    
    retlw   0x05 ; USAGE_PAGE (Button)
    retlw   0x09 ;
    
    retlw   0x19 ; Usage Minimum (Button 1)
    retlw   0x01 ;
    
    retlw   0x29 ; Usage Maximum (Button 2)
    retlw   0x02 ;
    
    retlw   0x15 ; logical minimun      
    retlw   0x00 ;
    
    retlw   0x25 ; logical maximun      
    retlw   0x01 ;
    
    retlw   0x75 ; report size 1
    retlw   0x01 ;
    
    retlw   0x95 ; report count 3
    retlw   0x02 ;
    
    retlw   0x81 ; input  (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
    retlw   0x02 ;
    
    retlw   0x95 ; report count 3       
    retlw   0x06 ;
    
    retlw   0x81 ; input (Data,Var,Abs) 
    retlw   0x03 ;
    
    retlw   0x05 ; USAGE_PAGE (Generic Desktop)     
    retlw   0x01 ; LOW
    
    retlw   0x09 ; Usage(X)
    retlw   0x30 ;
    
    retlw   0x09 ; Usage(Y)
    retlw   0x31 ;
    
    retlw   0x15 ; logical minimun (-127)       
    retlw   0x81 ;
    
    retlw   0x25 ; logical maximun (127)        
    retlw   0x7F ;
    
    retlw   0x75 ; report size 8
    retlw   0x08 ;
    
    retlw   0x95 ; report count 2
    retlw   0x02 ;
    
    retlw   0x81 ; INPUT (Data,Var,Rel) 
    retlw   0x06 ;
    
    retlw   0xC0 ; END_COLLECTION
    retlw   0xC0 ; END_COLLECTION
    
;***************************************
;*            Keyboard Emu             *
;***************************************


    
;***************************************
;*          Volume Control             *
;***************************************
    retlw   0x05 ; USAGE_PAGE (Consumer Devices)        
    retlw   0x0C ; LOW
    
    retlw   0x09 ; USAGE (Consumer Control)     
    retlw   0x01 ; LOW
    
    retlw   0xA1 ; COLLECTION (APPLICATION)     
    retlw   0x01 ; LOW
    
    retlw   0x85 ; REPORT_ID (2 Media)
    retlw   0x02 ; LOW
    
    retlw   0x19 ; Usage Minimum (0x00)
    retlw   0x00 ;
    
    retlw   0x2A ; Usage Maximum (0xAC format)
    retlw   0x3C ;
    retlw   0x02
    
    retlw   0x15 ; logical minimun      
    retlw   0x00 ;
    
    retlw   0x26 ; logical maximun (572)        
    retlw   0x3C ;
    retlw   0x02 ;


    retlw   0x95 ; report count 1
    retlw   0x01 ;
    
    retlw   0x75 ; report size 16
    retlw   0x10 ;
    
    retlw   0x81 ; input  (Data,Var,Abs)
    retlw   0x00 ;
    
    retlw   0xC0 ; END_COLLECTION
EndReportDescriptor2


; String pointer table
USB_SD_Ptr
Strings
    db    low String0, high String0
        db    upper String0, 0
    db    low String1, high String1
        db    upper String1, 0
    db    low String2, high String2
           db    upper String2, 0
    db    low String3, high String3
       db    upper String3, 0


String0
    retlw    (String1-String0)/2    ; Length of string
    retlw    USB_DESCRIPTOR_STRING   ; Descriptor type 3
    retlw    0x09                ; Language ID (as defined by MS 0x0409)
    retlw    0x04


; company name
String1
    retlw    (String2-String1)/2
    retlw    USB_DESCRIPTOR_STRING
    
        retlw   'D'
        retlw   0x00
        retlw   'C'
        retlw   0x00
        retlw   'L'
        retlw   0x00
        retlw   '.'
        retlw   0x00


    
; product name    
String2
    retlw    (String3-String2)/2
    retlw    USB_DESCRIPTOR_STRING
    
        retlw   'P'
        retlw   0x00
        retlw   'B'
        retlw   0x00
        retlw   'J'
        retlw   0x00
        retlw   'U'
        retlw   0x00
        retlw   'I'
        retlw   0x00
        retlw   '3'
        retlw   0x00
        retlw   '2'
        retlw   0x00
        retlw   'I'
        retlw   0x00
        retlw   'A'
        retlw   0x00
        retlw   '8'
        retlw   0x00
        retlw   'O'
        retlw   0x00
        retlw   '2'
        retlw   0x00
        retlw   '4'
        retlw   0x00


; serial number
String3
    retlw    (String4-String3)/2
    retlw    USB_DESCRIPTOR_STRING
    
        retlw   'D'
        retlw   0x00
        retlw   'J'
        retlw   0x00
        retlw   'C'
        retlw   0x00
        retlw   '0'
        retlw   0x00
        retlw   '0'
        retlw   0x00
        retlw   '2'
        retlw   0x00
        retlw   '2'
        retlw   0x00


String4
    retlw    (String5-String4)/2
    retlw    USB_DESCRIPTOR_STRING
        
        retlw   'A'
        retlw   0x00
        retlw   'R'
        retlw   0x00
        retlw   'C'
        retlw   0x00
        retlw   'A'
        retlw   0x00
        retlw   'D'
        retlw   0x00
        retlw   'E'
        retlw   0x00
        retlw   ' '
        retlw   0x00
        retlw   'J'
        retlw   0x00
        retlw   'A'
        retlw   0x00
        retlw   'M'
        retlw   0x00
        retlw   'M'
        retlw   0x00
        retlw   'A'
        retlw   0x00
        
String5
endasm
hid_desc_end

usb_hid.asm

Code:

; usb_hid.asm




;********************************************************************
; File Description:


; Change History:
;  Rev   Date         Description
;  1.0   11/19/2004   Initial release
;  2.1   02/26/2007   Updated for simplicity and to use common
;                     coding style
;*******************************************************************/


;/** INCLUDES *******************************************************/
;#include "GenericTypeDefs.h"
;#include "Compiler.h"
;#include "usb_config.h"
;#include "./USB/usb_device.h"
;#include "./USB/usb_function_hid.h"


;/** VARIABLES ******************************************************/
;#pragma udata
;BYTE idle_rate;
;BYTE active_protocol;   // [0] Boot Protocol [1] Report Protocol
;BYTE hid_rpt_rx_len;


;/** PRIVATE PROTOTYPES *********************************************/
;void HIDGetReportHandler(void);
;void HIDSetReportHandler(void);


;/** DECLARATIONS ***************************************************/
;#pragma code


;/** CLASS SPECIFIC REQUESTS ****************************************/
;/********************************************************************
; * Function:        void USBCheckHIDRequest(void)
; *
; * PreCondition:    None
; *
; * Input:           None
; *
; * Output:          None
; *
; * Side Effects:    None
; *
; * Overview:        This routine checks the setup data packet to see
; *                  if it knows how to handle it
; *
; * Note:            None
; *******************************************************************/
;//void USBCheckHIDRequest(void)
USBCheckHIDRequest
;//{
    movlb    high _USBMEMORYADDRESS    ; Point to proper bank
;//    if(SetupPkt.Recipient != RCPT_INTF) return;
    movf    SetupPkt, W        ; Recipient = RCPT_INTF?
    andlw    0x1f            ; Mask to lower 5 bits
    sublw    RCPT_INTF
    bnz    USBCheckHIDRequestExit    ; No


;//    if((SetupPkt.bIntfID != HID_INTF_ID)&& 
    movlw    HID_INTF_ID        ; IntfID = HID_INTF_ID?
    cpfseq    SetupPkt + bIntfID
;//        (SetupPkt.bIntfID != HID_DEV_INTF_ID)) return;
    movlw HID_DEV_INTF_ID ; IntfID = HID_DEV_INTF_ID?
    cpfseq SetupPkt + bIntfID


USBCheckHIDRequestExit
    return                ; No
    
;    /*
;     * There are two standard requests that hid.c may support.
;     * 1. GET_DSC(DSC_HID,DSC_RPT,DSC_PHY);
;     * 2. SET_DSC(DSC_HID,DSC_RPT,DSC_PHY);
;     */
;//    if(SetupPkt.bRequest == GET_DSC)
    movlw    GET_DSC            ; Request = GET_DSC?
    cpfseq    SetupPkt + bRequest
    bra    USBCheckHIDRequestClass    ; No
;//    {
;//        switch(SetupPkt.bDescriptorType)
;//        {
;//            case DSC_HID:           
    movlw    DSC_HID            ; DescriptorType = DSC_HID?
    cpfseq    SetupPkt + bDescriptorType
    bra    USBCheckHIDRequest1    ; No
;//                if(USBActiveConfiguration == 1)
    movlw    1            ; USBActiveConfiguration = 1?
    cpfseq    USBActiveConfiguration
    bra    USBCheckHIDRequestClass    ; No
;//                {
;//                    USBEP0SendROMPtr(
;//                        (ROM BYTE*)&configDescriptor1 + 18,
;//                        sizeof(USB_HID_DSC)+3,     // RRoj hack
;//                        USB_EP0_INCLUDE_ZERO);
    movlw    HID_INTF_ID        ; IntfID = HID_INTF_ID?
    cpfseq    SetupPkt + bIntfID
    bra USBHdesc2 ; Use HIDDescriptor2


    mSetSourcePointer HIDDescriptor1
    mGetRomTableCount        ; Set wCount
;//    clrf    info
    bcf    info, ctrl_trf_mem    ; Indicate ROM
    bsf    info, includeZero    ; Include a trailing zero packet
    bsf    info, busy
    bra    USBCheckHIDRequestClass


USBHdesc2
    mSetSourcePointer HIDDescriptor2
    mGetRomTableCount        ; Set wCount
;//    clrf    info
    bcf    info, ctrl_trf_mem    ; Indicate ROM
    bsf    info, includeZero    ; Include a trailing zero packet
    bsf    info, busy
    bra    USBCheckHIDRequestClass


;//                }
;//                break;
USBCheckHIDRequest1
;            case DSC_RPT:             
    movlw    DSC_RPT            ; DescriptorType = DSC_RPT?
    cpfseq    SetupPkt + bDescriptorType
    bra    USBCheckHIDRequest2    ; No
;                if(USBActiveConfiguration == 1)
    movlw    1            ; USBActiveConfiguration = 1?
    cpfseq    USBActiveConfiguration
    bra    USBCheckHIDRequestClass    ; No
;                {
;                    USBEP0SendROMPtr(
;                        (ROM BYTE*)&hid_rpt01,
;                        sizeof(hid_rpt01),     //See usbcfg.h
;                        USB_EP0_INCLUDE_ZERO);


    movlw    HID_INTF_ID        ; IntfID = HID_INTF_ID?
    cpfseq    SetupPkt + bIntfID
    bra USBRDasc2 ; Use ReportDescriptor2


        mSetSourcePointer ReportDescriptor1
        movlw    low (ReportDescriptor1Len)    ; Set wCount
        movwf    TBLPTRL
        movlw    high (ReportDescriptor1Len)
        movwf    TBLPTRH
        movlw    upper (ReportDescriptor1Len)
        movwf    TBLPTRU
            tblrd   *+            ; Read count low
        movff    TABLAT, inCount
            tblrd   *+            ; Skip next
        tblrd   *            ; Read count high
        movff    TABLAT, inCount + 1
;//    clrf    info
        bcf    info, ctrl_trf_mem    ; Indicate ROM
        bsf    info, includeZero    ; Include a trailing zero packet
        bsf    info, busy
        bra    USBCheckHIDRequestClass
USBRDasc2
    mSetSourcePointer ReportDescriptor2
    movlw    low (ReportDescriptor1Len)    ; Set wCount
    movwf    TBLPTRL
    movlw    high (ReportDescriptor1Len)
    movwf    TBLPTRH
    movlw    upper (ReportDescriptor1Len)
    movwf    TBLPTRU
        tblrd   *+            ; Read count low
    movff    TABLAT, inCount
        tblrd   *+            ; Skip next
        tblrd   *            ; Read count high
    movff    TABLAT, inCount + 1
;//    clrf    info
    bcf    info, ctrl_trf_mem    ; Indicate ROM
    bsf    info, includeZero    ; Include a trailing zero packet
    bsf    info, busy
    bra    USBCheckHIDRequestClass
;//                }
;//                break;

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Thread: USB pic18f4550 USB COMPOSITE DEVICE

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USB pic18f4550 USB COMPOSITE DEVICE

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