43 lines
1.6 KiB
C
43 lines
1.6 KiB
C
/* ****************************************************************************
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* stream/open_usb.c -- open a USB stream.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libcasio.
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* libcasio 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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* libcasio 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 libcasio; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************* */
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#include "stream.h"
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/**
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* casio_open_native_usb_stream:
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* Open the USB stream.
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*
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* @arg stream the stream to make.
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* @arg bus the USB bus on which to find the device.
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* -1 if any device on any bus (and address is not read).
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* @arg address the address on the bus of the device.
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* -1 if any device on the bus.
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* @return the error code (0 if ok).
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*/
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int CASIO_EXPORT casio_open_native_usb_stream(tio_stream_t **streamp,
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int bus, int address)
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{
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if (bus < -1 || bus > 255 || address < -1 || address > 255)
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return (casio_error_op);
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if (!open_native_usb_stream_func)
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return (casio_error_op);
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return ((*open_native_usb_stream_func)(streamp, bus, address));
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}
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