forked from Archive/PX4-Autopilot
85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
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/************************************************************************************
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* configs/vsn/include/muxbus.h
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* include/arch/board/muxbus.h
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*
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* Copyright (C) 2011 Uros Platise. All rights reserved
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*
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* Authors: Uros Platise <uros.platise@isotel.eu>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_BOARD_MUXBUS_H
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#define __ARCH_BOARD_MUXBUS_H
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/**
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* Initialization of the semaphore and initial bus state.
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*/
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void vsn_muxbus_init(void);
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/**
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* Simple Lock / Unlock Mechanism for the SDIO Interface
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*
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* NOTE: This function is provided for the stm32_sdio driver.
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*/
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extern void stm32_muxbus_sdio_lock(bool lock);
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/**
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* Set PGA Gain of the Analog Devices AD8231 on bus shared with the
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* SDIO interface
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*
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* \param gain sets the front-end gain as 2^{gain}, where gain = 0..7.
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* Setting gain outside that range shutdowns the front-end.
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*
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* \return gain set or -1 if front end is put into shutdown.
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*/
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extern int vsn_muxbus_setpgagain(int gain);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_BOARD_MUXBUS_H */
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