mirror of https://github.com/ArduPilot/ardupilot
116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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* \brief Standard avr-libc character stream driver for the USART.
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*
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* Serial stream driver for the USART subsystem on supported USB AVRs. This makes use of the functions in the
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* regular USART driver (see \ref Group_Serial), but allows the avr-libc standard stream functions (printf,
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* puts, etc.) to work with the
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* USART.
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*/
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/** \ingroup Group_PeripheralDrivers
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* @defgroup Group_SerialStream Serial Stream Driver - LUFA/Drivers/Peripheral/SerialStream.h
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*
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* \section Sec_Dependencies Module Source Dependencies
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* The following files must be built with any user project that uses this module:
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* - LUFA/Drivers/Peripheral/SerialStream.c <i>(Makefile source module name: LUFA_SRC_SERIALSTREAM)</i>
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*
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* \section Module Description
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* Serial stream driver for the USART subsystem on supported USB AVRs. This makes use of the functions in the
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* regular USART driver (see \ref Group_Serial), but allows the avr-libc standard stream functions (printf,
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* puts, etc.) to work with the
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* USART.
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*
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* @{
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*/
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#ifndef __SERIAL_STREAM_H__
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#define __SERIAL_STREAM_H__
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/* Includes: */
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#include <avr/io.h>
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#include <stdio.h>
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#include "Serial.h"
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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/* External Variables: */
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extern FILE USARTStream;
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/* Function Prototypes: */
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#if defined(__INCLUDE_FROM_SERIALSTREAM_C)
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static int SerialStream_TxByte(char DataByte,
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FILE *Stream) ATTR_NON_NULL_PTR_ARG(2);
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static int SerialStream_RxByte(FILE *Stream) ATTR_NON_NULL_PTR_ARG(1);
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#endif
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#endif
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/* Public Interface - May be used in end-application: */
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/* Inline Functions: */
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/** Initialises the serial stream (and regular USART driver) so that both the stream and regular
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* USART driver functions can be used. Must be called before any stream or regular USART functions.
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*
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* \param[in] BaudRate Baud rate to configure the USART to.
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* \param[in] DoubleSpeed Enables double speed mode when set, halving the sample time to double the baud rate.
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*/
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static inline void SerialStream_Init(const uint32_t BaudRate,
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const bool DoubleSpeed)
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{
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Serial_Init(BaudRate, DoubleSpeed);
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stdout = &USARTStream;
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stdin = &USARTStream;
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}
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/** Turns off the serial stream (and regular USART driver), disabling and returning used hardware to
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* their default configuration.
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*/
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static inline void SerialStream_ShutDown(void)
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{
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Serial_ShutDown();
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}
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/* Disable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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}
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#endif
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#endif
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/** @} */
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