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LibrePilot/flight/Libraries/inc/fifo_buffer.h

66 lines
2.0 KiB
C

/**
******************************************************************************
*
* @file fifo_buffer.h
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* @brief GPIO functions header.
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _FIFO_BUFFER_H_
#define _FIFO_BUFFER_H_
#include "stdint.h"
// *********************
typedef struct
{
uint8_t *buf_ptr;
volatile uint16_t rd;
volatile uint16_t wr;
uint16_t buf_size;
} t_fifo_buffer;
// *********************
uint16_t fifoBuf_getSize(t_fifo_buffer *buf);
uint16_t fifoBuf_getUsed(t_fifo_buffer *buf);
uint16_t fifoBuf_getFree(t_fifo_buffer *buf);
void fifoBuf_clearData(t_fifo_buffer *buf);
void fifoBuf_removeData(t_fifo_buffer *buf, uint16_t len);
int16_t fifoBuf_getBytePeek(t_fifo_buffer *buf);
int16_t fifoBuf_getByte(t_fifo_buffer *buf);
uint16_t fifoBuf_getDataPeek(t_fifo_buffer *buf, void *data, uint16_t len);
uint16_t fifoBuf_getData(t_fifo_buffer *buf, void *data, uint16_t len);
uint16_t fifoBuf_putByte(t_fifo_buffer *buf, const uint8_t b);
uint16_t fifoBuf_putData(t_fifo_buffer *buf, const void *data, uint16_t len);
void fifoBuf_init(t_fifo_buffer *buf, const void *buffer, const uint16_t buffer_size);
// *********************
#endif