?? sn8_usb_ep2.asm
字號:
;***********************************************************************
; USB Endpoint 2 function
;=======================================================================
;This file is for Endpoint 2.
;EP2 FIFO address 0x20 ~ 0x2F
;***********************************************************************
EP2_FUNCTION:
WRITE_EP2:
EP2_WR_RAM_addr_set #0x20 ;ep1 FIFO address
EP2_WR_RAM_data #0x0
EP2_WR_RAM_addr_set #0x21 ;FIFO address + 1
EP2_WR_RAM_data #0x0
EP2_WR_RAM_addr_set #0x22
EP2_WR_RAM_data #0X0
EP2_WR_RAM_addr_set #0x23
EP2_WR_RAM_data #0x0
EP2_WR_RAM_addr_set #0x24
EP2_WR_RAM_data #0x0
_ep2_normal:
mov a, #10100101b ;ACK
b0mov UE2R, a
ret
_ep2_stall:
mov a, #11000000b ;EP2 STALL
b0mov UE2R, a
ret
//==============================================================//
// End of EP1 function //
//==============================================================//
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