94 lines
2.1 KiB
ArmAsm
94 lines
2.1 KiB
ArmAsm
; Wrapper for Contiki ethernet driver
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.include "../inc/common.inc"
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.export eth_init
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.export eth_rx
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.export eth_tx
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.import eth_inp
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.import eth_inp_len
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.import eth_outp
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.import eth_outp_len
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.import eth
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.import cfg_mac
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.struct driver
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drvtype .byte 3
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apiver .byte
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mac .byte 6
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bufaddr .addr
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bufsize .word
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init .byte 3
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poll .byte 3
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send .byte 3
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exit .byte 3
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.endstruct
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.code
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; initialize the ethernet adaptor
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; inputs: A = adaptor specific initialisation value or 'eth_init_default'
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; outputs: carry flag is set if there was an error, clear otherwise
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eth_init:
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jsr eth+driver::init
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ldx #5
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: lda eth+driver::mac,x
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sta cfg_mac,x
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dex
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bpl :-
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ldax #1518
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stax eth+driver::bufsize
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rts
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; receive a packet
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; inputs: none
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; outputs:
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; if there was an error receiving the packet (or no packet was ready) then carry flag is set
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; if packet was received correctly then carry flag is clear,
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; eth_inp contains the received packet,
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; and eth_inp_len contains the length of the packet
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eth_rx:
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ldax #eth_inp
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stax eth+driver::bufaddr
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jsr eth+driver::poll
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stax eth_inp_len
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rts
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; send a packet
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; inputs:
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; eth_outp: packet to send
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; eth_outp_len: length of packet to send
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; outputs:
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; if there was an error sending the packet then carry flag is set
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; otherwise carry flag is cleared
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eth_tx:
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ldax #eth_outp
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stax eth+driver::bufaddr
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ldax eth_outp_len
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jmp eth+driver::send
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; -- LICENSE FOR ethernet.s --
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; The contents of this file are subject to the Mozilla Public License
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; Version 1.1 (the "License"); you may not use this file except in
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; compliance with the License. You may obtain a copy of the License at
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; http://www.mozilla.org/MPL/
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;
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; Software distributed under the License is distributed on an "AS IS"
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; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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; License for the specific language governing rights and limitations
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; under the License.
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;
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; The Original Code is ip65.
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;
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; The Initial Developer of the Original Code is Jonno Downes,
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; jonno@jamtronix.com.
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; Portions created by the Initial Developer are Copyright (C) 2009
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; Jonno Downes. All Rights Reserved.
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; -- LICENSE END --
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