Some work done on abstract I/O channels.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@931 35acf78f-673a-0410-8e92-d51de3d6d3f4
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@ -80,6 +80,7 @@
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#include "threads.h"
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#include "inline.h"
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#include "queues.h"
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#include "channels.h"
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#include "serial.h"
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#include "debug.h"
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@ -0,0 +1,117 @@
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/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT 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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ChibiOS/RT 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 channels.h
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* @brief I/O channels
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* @addtogroup Channels
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* @{
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*/
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#ifndef _CHANNELS_H_
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#define _CHANNELS_H_
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/**
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* @brief Virtual methods table for base channels.
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*/
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struct _base_channel_vmt {
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/**
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* Channel synchronous put method.
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*/
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msg_t (*put)(void *instance, uint8_t b, systime_t timeout);
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/**
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* Channel synchronous get method.
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*/
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msg_t (*get)(void *instance, systime_t timeout);
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};
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/**
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* @brief Base channels data.
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* @note It is empty because @p BaseChannel is only an interface without
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* implementation.
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*/
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struct _base_channel_data {
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};
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/**
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* @brief Base channel class.
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* @details This class represents a generic, synchronous, byte-wide,
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* I/O channel.
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*/
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typedef struct _base_channel {
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struct _base_channel_vmt *vmt; /**< Virtual Methods Table. */
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struct _base_channel_data d0; /**< Class data. */
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} BaseChannel;
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#if CH_USE_EVENTS
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/**
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* @brief Virtual methods table for base asynchronous channels.
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*/
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struct _base_asynchronous_channel_vmt {
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/**
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* Channel synchronous put method.
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*/
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msg_t (*put)(void *instance, uint8_t b, systime_t timeout);
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/**
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* Channel synchronous get method.
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*/
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msg_t (*get)(void *instance, systime_t timeout);
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/**
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* Channel asynchronous write method.
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*/
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size_t (*write)(void *instance, uint8_t *bp, size_t n);
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/**
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* Channel asynchronous read method.
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*/
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size_t (*read)(void *instance, uint8_t *bp, size_t n);
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};
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/**
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* @brief Base asynchronous channels data.
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*/
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struct _base_asynchronous_channel_data {
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/**
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* Data Available @p EventSource. This event is generated when some incoming
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* data is inserted in the input queue.
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*/
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EventSource ievent;
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/**
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* Data Transmitted @p EventSource. This event is generated when the
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* output queue is empty.
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*/
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EventSource oevent;
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};
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/**
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* @extends BaseChannel
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*
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* @brief Base asynchronous channel class.
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* @details This class extends @p BaseChannel by adding methods for
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* asynchronous I/O in an event-driven environment.
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*/
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typedef struct {
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struct _base_asynchronous_channel_vmt *vmt; /**< Virtual Methods Table. */
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struct _base_channel_data d0; /**< Super class data. */
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struct _base_asynchronous_channel_data d1; /**< Class data. */
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} BaseAsynchronousChannel;
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#endif /* CH_USE_EVENTS */
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#endif /* _CHANNELS_H_ */
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/** @} */
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1
todo.txt
1
todo.txt
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@ -5,6 +5,7 @@ X = In progress, some work done.
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* = Done.
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After 1.2.0:
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- Remove any instance of unnamed structures/unions.
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- Dedicated syscalls.c support for newlib users.
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X Abstract I/O channels rather than just serial ports.
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- Move the serial drivers implementations in library. Better keep the core
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