amiro-os / core / inc / aos_iostream.h @ ffbd63e4
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/*
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AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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Copyright (C) 2016..2019 Thomas Schöpping et al.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file aos_iostream.h
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* @brief Stream and channel macros and structures.
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*
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* @addtogroup aos_stream
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* @{
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*/
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#ifndef _AMIROOS_IOSTREAM_H_
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#define _AMIROOS_IOSTREAM_H_
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#include <hal.h> |
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#include <aos_types.h> |
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#include <stdarg.h> |
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/**
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* @brief Channel flag to indicate whether the channel is attached to a stream.
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*/
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#define AOS_IOCHANNEL_ATTACHED (1 << 0) |
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/**
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* @brief Channel flag to indicate whether the channel is set as input.
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*/
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#define AOS_IOCHANNEL_INPUT_ENABLE (1 << 1) |
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/**
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* @brief Channel flag to indicate whether the channel is set as output.
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*/
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#define AOS_IOCHANNEL_OUTPUT_ENABLE (1 << 2) |
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/*
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* forward definitions
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*/
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typedef struct aos_iochannel AosIOChannel; |
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typedef struct aos_ostream AosIOStream; |
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/**
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* @brief AosI=Channel specific methods.
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*/
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#define _aos_iochannel_methods \
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_base_asynchronous_channel_methods |
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/**
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* @brief AosIOChannel specific data.
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*/
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#define _aos_iochannel_data \
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/* pointer to a BaseAsynchronousChannel object */ \
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BaseAsynchronousChannel* asyncchannel; \ |
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/* pointer to the next channel in a AosIOStream */ \
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AosIOChannel* next; \ |
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/* flags related to the channel */ \
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uint8_t flags; |
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/**
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* @extends BaseAsynchronousChannelVMT
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*
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* @brief AosIOChannel virtual methods table.
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*/
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struct AosIOChannelVMT {
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_aos_iochannel_methods |
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}; |
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/**
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* @extends BaseAsynchronousChannel
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*
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* @brief I/O Channel class.
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* @details This class implements an asynchronous I/O channel.
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*/
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struct aos_iochannel {
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/** @brief Virtual Methods Table. */
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const struct AosIOChannelVMT* vmt; |
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_aos_iochannel_data |
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}; |
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/**
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* @brief AosIOStream methods.
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*/
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#define _aos_iostream_methods \
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_base_sequential_stream_methods |
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/**
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* @brief AosIOStream data.
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*/
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#define _aos_iostream_data \
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/* Pointer to the first channel in a list. */ \
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AosIOChannel* channel; |
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/**
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* @extends BaseSequentialStream
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*
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* @brief AosIOStream virtual methods table.
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*/
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struct AosIOStreamVMT {
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_aos_iostream_methods |
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}; |
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/**
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* @extends BaseSequentialStream
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*
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* @brief I/O Stream class.
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* @details This class implements an base sequential stream.
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* @todo So far only output but no input is supported.
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*/
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struct aos_ostream {
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const struct AosIOStreamVMT* vmt; |
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_aos_iostream_data |
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}; |
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#ifdef __cplusplus
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extern "C" { |
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#endif
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void aosIOStreamInit(AosIOStream* stream);
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void aosIOChannelInit(AosIOChannel* channel, BaseAsynchronousChannel* asyncchannel);
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void aosIOStreamAddChannel(AosIOStream* stream, AosIOChannel* channel);
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aos_status_t aosIOStreamRemoveChannel(AosIOStream* stream, AosIOChannel* channel); |
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void aosIOChannelInputEnable(AosIOChannel* channel);
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void aosIOChannelInputDisable(AosIOChannel* channel);
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void aosIOChannelOutputEnable(AosIOChannel* channel);
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void aosIOChannelOutputDisable(AosIOChannel* channel);
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#ifdef __cplusplus
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} |
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#endif
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#endif /* _AMIROOS_IOSTREAM_H_ */ |
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/** @} */
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