sn8_usb_ep1.asm

来自「Sonix新出的MCU SN8F2255的USB的HID库。」· 汇编 代码 · 共 46 行

;***********************************************************************
;	USB Endpoint 1 function 
;=======================================================================
;This file is for Endpoint 1.
;EP1 FIFO address 0x08 ~ 0x17
;***********************************************************************
EP1_FUNCTION:	
		
WRITE_EP1:
		EP1_WR_RAM_addr_set #0x08	;ep1 FIFO address
		EP1_WR_RAM_data	#0x1	
		EP1_WR_RAM_addr_set #0x09	;FIFO address + 1
		EP1_WR_RAM_data	MOUSE_X_AXIS	
		EP1_WR_RAM_addr_set #0x0A
		EP1_WR_RAM_data	MOUSE_Y_AXIS
		EP1_WR_RAM_addr_set #0x0B
		EP1_WR_RAM_data	#0x0		; Z AXIS		
		EP1_WR_RAM_addr_set #0x0C	
		EP1_WR_RAM_data	#0X0	
		EP1_WR_RAM_addr_set #0x0D	
		EP1_WR_RAM_data	#0X0	
		EP1_WR_RAM_addr_set #0x0E
		EP1_WR_RAM_data	#0x0
		EP1_WR_RAM_addr_set #0x0F
		EP1_WR_RAM_data	#0X0		
			
		mov	a, #0x0
		cmprs	a, HALT1
		jmp	_ep1_stall
		jmp	_ep1_normal

_ep1_normal:
		mov	a, #10100100b	;1.keep enable ep1 (bit7 = 1)
					;2.counter = 4   ; send 4 byte to host       
					;3.ACK response
		b0mov	UE1R, a			
		ret

_ep1_stall:
		mov	a, #11000000b	;EP1 STALL					 
		b0mov	UE1R, a	
		ret

//==============================================================//
//		End of EP1 function				//
//==============================================================//