2 Axes USB HID Descriptor problem

Hi everyone,

This is the first time I make usb project with pics but and i read a lot about configuring the Descriptor file.

I just need x and y axes coming from to POTs feeding AN0 and AN1

Windows can recognize my device as joystick but not showing the axes.

I am using PIC18F2550 and there is no extra things the PIC should do

can any one help me in configuring the Descriptor file, my project is in the attachment

Thank you in advanceAttachment 7264

I could go a head one step and everything seems to be well but only on the simulation program, but on realty the two values are always zero and they are not changing while the analog signals change and I also tried to post constant values to find out where the problem is but it think it is from the descriptor file.

I think my Descriptor is still have something wrong so would anyone help me to find what's wrong in my descriptor?

Thank you

Code:

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ReportDescriptor1
    ; USAGE_PAGE (Generic Desktop)
    retlw        0x05               
    retlw        0x01
    ;retlw        0xFF

    ; USAGE (Joystick)
    retlw        0x09
    retlw        0x05

    ; collection(application)
    retlw        0xA1
    retlw        0x01
   
    ;usage (Pointer)
    ;retlw 0x09     
    ;retlw 0x01
       
    ;usage (Phiscal)
    ;retlw 0xA1     
    ;retlw 0x00 
   
 

    ; *** INPUT REPORT ***

    ; usage(X)
    retlw        0x09
    retlw        0x33
   
    ;usage(Y)
    retlw        0x19
    retlw        0x34
   
 

    retlw        0x15        ; logical minimum (-128)
    retlw        0x80    ;
   
    retlw        0x25        ; logical maximum (127)
    retlw        0x7F
   
   
    retlw        0x75        ; Report Size (8)
    retlw        0x08    ;
   
    retlw        0x95        ; Report count(2)
    retlw        0x02  ;
   

    ; Input (Data, Variable, Absolute)
    retlw        0x81
    retlw        0x02

    retlw  0xC0                  ; end collection
 

EndReportDescriptor1

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TronicBrain did you sort this out yet?

I dug through some of my old examples and found this - not sure if it works but it might get ou in the right direction. I haven't played with pics in a long time so bit rusty.

Code:

---


ReportDescriptor1
    RETLW 0x05 
    RETLW 0x01                      ; USAGE_PAGE (Generic Desktop)
    RETLW 0x09 
    RETLW 0x04                      ; USAGE (Joystick)
    RETLW 0xa1 
    RETLW 0x01                      ; COLLECTION (Application)
    RETLW 0x09 
    RETLW 0x01                      ;  USAGE (Pointer)
    RETLW 0xa1 
    RETLW 0x00                      ;  COLLECTION (Physical)
    RETLW 0x95 
    RETLW 0x02                      ;    REPORT_COUNT (2)
    RETLW 0x75 
    RETLW 0x08                      ;    REPORT_SIZE (8)
    RETLW 0x15 
    RETLW 0x00                      ;    LOGICAL_MINIMUM (0)
    RETLW 0x26 
    RETLW 0xff 
    RETLW 0x00                          ;    LOGICAL_MAXIMUM (255)
    RETLW 0x35 
    RETLW 0x00                      ;    PHYSICAL_MINIMUM (0)
    RETLW 0x46 
    RETLW 0xff 
    RETLW 0x00                      ;    PHYSICAL_MAXIMUM (255)
    RETLW 0x09 
    RETLW 0x30                      ;    USAGE (X)
    RETLW 0x09 
    RETLW 0x31                      ;    USAGE (Y)
    RETLW 0x81 
    RETLW 0x02                      ;    INPUT (Data Var Abs)
    RETLW 0xc0                            ;    END_COLLECTION
    RETLW 0xc0                            ; END_COLLECTION
EndReportDescriptor1

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