ram.h

一个全面介绍cy7c6372 里面包概了芯片的USB编程的代码和功能介绍.

;IMPORTANT!!!!!!!!!!!!
;This is a BETA version of Firmware that has not been
;fully tested.  PLEASE keep this in mind and use this
;firmware as REFERENCE.
;========================================
;	
;	Ram Variable Declarations
;	
;========================================

bottom_of_ram:		equ	00h

timer_sync:		equ	20h
timer_msb:		equ	21h
suspend_counter:	equ	22h
interrupt_mask:		equ	23h
task_number:		equ	24h
new_task:		equ	25h
loop_counter:		equ	26h
endp0_data_toggle: 	equ  	27h
data_count:		equ	28h
data_start:		equ	29h
configuration_status:	equ	2ah
;endpoint_stall:	equ	2bh
protocol_status:	equ	2ch
remote_wakeup_status:	equ	2dh
tasktimer:		equ	2eh
timer_error:		equ	2fh

ep1_data_toggle:	equ	30h
new_buttons:		equ	31h
temp:			equ	32h
old_x:			equ	33h
new_x:			equ	34h
old_y:			equ	35h
new_y:			equ	36h
Buttons_debounce:	equ	37h

;========================================
;	
;	FIFO Declarations
;	
;========================================

EP0_FIFO:        	equ  F8h	; control endpoint 0 fifo
EP1_FIFO:             	equ  F0h	; data endpoint 1 fifo
EP2_FIFO:		equ  E8h	; data endpoint 2 fifo

bmRequestType:          equ  EP0_FIFO
bRequest:               equ  EP0_FIFO + 1
wValue:                 equ  EP0_FIFO + 2      ; default wValue (8-bits)
wValueHi:               equ  EP0_FIFO + 3
wIndex:                 equ  EP0_FIFO + 4       ; default wIndex (8-bits)
wIndexHi:               equ  EP0_FIFO + 5 
wLength:                equ  EP0_FIFO + 6       ; default wLength (8-bits)
wLengthHi:              equ  EP0_FIFO + 7

top_of_ram:		equ  FFh

;========================================
;	
;	Constant Declarations
;	
;========================================

EP1_REPORT_LENGTH:	equ	03h

; application specific gier masks

ENUMERATE_MASK:		equ	(1MS_IE+USB_PS2_IE)	; enable 1MS interrupt and also USB interrupts
							; re-enable also EP0
ENUMERATED_MASK:	equ	(GPIO_IE+128USEC_IE+1MS_IE+USB_PS2_IE)	; enable all interrupts for enumerated
							; also enable EP0 and EP1 done on each IPRET
SUSPEND_MASK:		equ	00h			
;========================================
;	
;	USB Constant Declarations
;	
;========================================

; values for bmRequestType

HOST_TO_DEVICE:			equ	00h
HOST_TO_INTERFACE:		equ	01h
HOST_TO_ENDPOINT:		equ	02h

DEVICE_TO_HOST:			equ	80h
INTERFACE_TO_HOST:		equ	81h
ENDPOINT_TO_HOST:		equ	82h

CLASS:				equ	20h
VENDOR:				equ	40h

; other EP0 constants

EP1_STALLED:       		equ  0		; recipient endpoint
REMOTE_WAKEUP:	   		equ  1		; recipient device

DISABLE_REMOTE_WAKEUP:  	equ   0         ; bit[1] = 0
ENABLE_REMOTE_WAKEUP:   	equ   2         ; bit[1] = 1

SUSPEND_TIME:			equ	08h		; my 3650 won't handle a value of 3ms

ACKIN:				equ	0Fh
ACKOUT:				equ	0Bh	

Buttons_port:			equ	P1_data
LEDs_port:			equ	P0_data

;========================================
;	
;	Application Specific aliases
;	
;========================================

button_port:		equ	P0_data
Dpad_port:		equ	P1_data
DPAD_BITS:		equ	0fh
Y_BITS:			equ	03h
BUTTON_BITS:		equ	ffh