176 lines
6.3 KiB
C
176 lines
6.3 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 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 serial_usb.h
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* @brief Serial over USB Driver macros and structures.
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*
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* @addtogroup SERIAL_USB
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* @{
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*/
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#ifndef _SERIAL_USB_H_
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#define _SERIAL_USB_H_
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#if HAL_USE_SERIAL_USB || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name SERIAL_USB configuration options
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* @{
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*/
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/**
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* @brief Serial over USB buffers size.
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* @details Configuration parameter, the buffer size must be a multiple of
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* the USB data endpoint maximum packet size.
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* @note The default is 64 bytes for both the transmission and receive
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* buffers.
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*/
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#if !defined(SERIAL_USB_BUFFERS_SIZE) || defined(__DOXYGEN__)
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#define SERIAL_USB_BUFFERS_SIZE 64
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#endif
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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#if !HAL_USE_USB && !CH_USE_QUEUES && !CH_USE_EVENTS
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#error "Serial over USB Driver requires HAL_USE_USB, CH_USE_QUEUES, "
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"CH_USE_EVENTS"
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#endif
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Driver state machine possible states.
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*/
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typedef enum {
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SDU_UNINIT = 0, /**< Not initialized. */
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SDU_STOP = 1, /**< Stopped. */
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SDU_READY = 2 /**< Ready. */
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} sdustate_t;
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/**
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* @brief Structure representing a serial over USB driver.
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*/
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typedef struct SerialUSBDriver SerialUSBDriver;
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/**
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* @brief Serial over USB Driver configuration structure.
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* @details An instance of this structure must be passed to @p sduStart()
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* in order to configure and start the driver operations.
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*/
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typedef struct {
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/**
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* @brief USB driver to use.
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*/
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USBDriver *usbp;
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/**
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* @brief USB driver configuration structure.
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*/
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USBConfig usb_config;
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} SerialUSBConfig;
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/**
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* @brief @p SerialDriver specific data.
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*/
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#define _serial_usb_driver_data \
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_base_asynchronous_channel_data \
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/* Driver state.*/ \
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sdustate_t state; \
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/* Input queue.*/ \
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InputQueue iqueue; \
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/* Output queue.*/ \
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OutputQueue oqueue; \
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/* Input buffer.*/ \
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uint8_t ib[SERIAL_USB_BUFFERS_SIZE]; \
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/* Output buffer.*/ \
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uint8_t ob[SERIAL_USB_BUFFERS_SIZE]; \
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/* End of the mandatory fields.*/ \
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/* Current configuration data.*/ \
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const SerialUSBConfig *config;
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/**
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* @brief @p SerialUSBDriver specific methods.
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*/
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#define _serial_usb_driver_methods \
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_base_asynchronous_channel_methods
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/**
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* @extends BaseAsynchronousChannelVMT
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*
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* @brief @p SerialDriver virtual methods table.
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*/
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struct SerialUSBDriverVMT {
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_serial_usb_driver_methods
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};
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/**
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* @extends BaseAsynchronousChannel
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*
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* @brief Full duplex serial driver class.
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* @details This class extends @p BaseAsynchronousChannel by adding physical
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* I/O queues.
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*/
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struct SerialUSBDriver {
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/** @brief Virtual Methods Table.*/
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const struct SerialUSBDriverVMT *vmt;
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_serial_usb_driver_data
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};
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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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 sduInit(void);
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void sduObjectInit(SerialUSBDriver *sdp);
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void sduStart(SerialUSBDriver *sdup, const SerialUSBConfig *config);
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void sduStop(SerialUSBDriver *sdup);
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bool_t sduRequestsHook(USBDriver *usbp);
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void sduDataTransmitted(USBDriver *usbp, usbep_t ep);
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void sduDataReceived(USBDriver *usbp, usbep_t ep);
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void sduInterruptTransmitted(USBDriver *usbp, usbep_t ep);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_SERIAL_USB */
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#endif /* _SERIAL_USB_H_ */
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/** @} */
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