; HID_descriptors.a51
; Contains the Device Descriptor, Configuration(/Interface/HID/Endpoint) Descriptor,
; and String descriptors.
; 
; There are two advantages to putting these into an assembly file rather than in-likne
; in the C module:
;	1.	Descriptor lengths can be computed using the 'db' directive.
;	2.	Labels may be assigned in the middle of a discriptor (HID)
;
public	DeviceDescr,ConfigDescr,String0,String1,String2,HIDDescr,ReportDescr,ReportDescr_end
;
VID	equ	0547h
PID	equ	7450h
DID 	equ	0001h
;
DSCR	segment	CODE
;
	rseg	DSCR
DeviceDescr:	
	db	18d			; Descriptor length
	db	01h			; Descriptor type = DEVICE
	db	10h,01h			; spec version (BCD) is 1.10
	db	0,0,0			; HID class is defined in the interface descriptor
	db	64			; maxPacketSize
	db	LOW(VID),HIGH(VID)
	db	LOW(PID),HIGH(PID)
	db	LOW(DID),HIGH(DID)
	db	01h,02h,03h		; manuf, product, s/n string index (no s/n)
	db	01h			; number of configurations
ConfigDescr:
	db	09h			; descriptor length
	db	02h			; Descriptor type = CONFIG
	db	LOW(EPend-ConfigDescr)	; total length (conf+interface+HID+EP's)
	db	HIGH(EPend-ConfigDescr)
	db	01h			; number of interfaces
	db	01h			; value to select this interface
	db	04h			; string index to describe this config
	db	10100000b		; b7=1; b6=self-powered; b5=Remote WU
	db	50d			; bus power = 100 ma
; Interface Descriptor
	db	09h			; Descriptor length
	db	04h			; Descriptor type = INTERFACE
	db	0,0			; Interface 0, Alternate setting 0
	db	02h			; number of endpoints
	db	03h,0,0			; class(03)=HID, no subclass or protocol
	db	05h			; string index for this interface
HIDDescr:
	db	09h			; Descriptor length
	db	21h			; Descriptor type - HID
	db	10h,01h			; HID Spec version 1.10
	db	0			; country code(none)
	db	01h			; number of HID class descriptors
	db	22h			; class descriptor type: REPORT
	db	LOW(ReportDescr_end - ReportDescr)
	db	HIGH(ReportDescr_end - ReportDescr)
; I-0, AS-0, first endpoint descriptor (EP1IN)
	db	07h			; Descriptor length
	db	05h			; Descriptor type = ENDPOINT
	db	81h			; IN-1
	db	03h			; type - INTERRUPT
	db	64d,0			; maxPacketSize = 64
	db	10d			; polling interval is 10 msec
; I-0, AS-0, second endpoint descriptor (EP1OUT)
	db	07h			; Descriptor length
	db	05h			; Descriptor type = ENDPOINT
	db	01h			; OUT-1
	db	03h			; type - INTERRUPT
	db	64d,0			; maxPacketSize = 64
	db	10d			; polling interval is 10 msec
EPend:
;
ReportDescr:	db	06h,0A0h,0FFh	; Usage page (vendor-defined:FF00-FFFF)
		db	09h,0A5h	; Usage (vendor defines 'A5')
		db 	0A1h,01h	; Collection(application)
		db	09h,0A6h	; 	Usage (vendor)
; The input report
		db	09h,0A7h	; 	  Usage(vendor defines 'A7')
		db	15h,80h		; 	  Logical minimum(-128)
		db	25h,7Fh		; 	  Logical maximum(127)
		db	75h,08h		;	  Report size(8)
		db	95h,02h		; 	  Report count(2)
		db	81h,02h		; 	  Input(Data,Variable,Absolute)
; The output report
		db	09h,0A9h	; 	Usage (vendor defines 'A9')
		db	15h,80h		; 	  Logical minimum(-128)
		db	25h,7Fh		; 	  Logical maximum(127)
		db	75h,08h		; 	  Report size(8)
		db	95h,02h		; 	  Report count(2)
		db	91h,02h		; 	  Output (Data, Variable, Absolute)
		db	0C0h		; End Collection
ReportDescr_end:

String0:
	db	4,3,9,4			; string0 is language ID: len, type, lang, sub-lang
String1:				; manufacturer
	db	endStr1-String1		; length is one byte for strings
	db	3			; Descriptor type = STRING
	db	'C',0,'y',0,'p',0,'r',0,'e',0,'s',0,'s',0
endStr1:
String2:				; product
	db	endStr2-String2
	db	3
	db	'L',0,'a',0,'n',0,'e',0,'s',0,' ',0,'H',0,'I',0,'D',0

endStr2:
String3:				; Serial Number
	db	endStr3-String3	
	db	3
	db	'S',0,'/',0,'N',0,' ',0,'0',0,'0',0,'0',0,'1',0

endStr3:	
String4:				; configuration
	db	endStr4-String4	
	db	3
	db	'C',0,'f',0,'g',0,'.',0,'s',0,'t',0,'r',0,'i',0,'n',0,'g',0
endStr4:
String5:				; interface
	db	endStr5-String5	
	db	3
	db	'I',0,'n',0,'t',0,'e',0,'r',0,'f',0,'a',0,'c',0,'e',0,'X',0
endStr5:
END