48 lines
1.7 KiB
Plaintext
48 lines
1.7 KiB
Plaintext
/* *****************************************************************************
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* protocol/legacy/init.c -- initialize the legacy communication.
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* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libp7.
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* libp7 is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libp7 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libp7; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************** */
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#include <libp7/internals.h>
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/* ************************************************************************** */
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/* Initialization */
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/* ************************************************************************** */
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/**
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* p7_legacy_start:
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* Start the communication.
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*
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* @arg handle the handle.
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* @return the error, if any.
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*/
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int p7_legacy_start(p7_handle_t *handle)
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{
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/* receive the attention request */
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unsigned char byte;
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p7_read(handle->stream, &byte, 1, 0);
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if (byte != 0x15) return (p7_error_unknown);
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/* send the device present */
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byte = 0x13;
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p7_write(handle->stream, &byte, 1);
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/* receive first packet */
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p7_legacy_recv(&packet);
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}
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