196 lines
7.0 KiB
C
196 lines
7.0 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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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 == TRUE) || defined(__DOXYGEN__)
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#include "usb_cdc.h"
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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 256 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 256
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#endif
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/**
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* @brief Serial over USB number of buffers.
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* @note The default is 2 buffers.
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*/
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#if !defined(SERIAL_USB_BUFFERS_NUMBER) || defined(__DOXYGEN__)
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#define SERIAL_USB_BUFFERS_NUMBER 2
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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 == FALSE
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#error "Serial over USB Driver requires HAL_USE_USB"
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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 Bulk IN endpoint used for outgoing data transfer.
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*/
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usbep_t bulk_in;
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/**
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* @brief Bulk OUT endpoint used for incoming data transfer.
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*/
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usbep_t bulk_out;
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/**
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* @brief Interrupt IN endpoint used for notifications.
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* @note If set to zero then the INT endpoint is assumed to be not
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* present, USB descriptors must be changed accordingly.
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*/
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usbep_t int_in;
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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 buffers queue.*/ \
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input_buffers_queue_t ibqueue; \
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/* Output queue.*/ \
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output_buffers_queue_t obqueue; \
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/* Input buffer.*/ \
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uint8_t ib[BQ_BUFFER_SIZE(SERIAL_USB_BUFFERS_NUMBER, \
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SERIAL_USB_BUFFERS_SIZE)]; \
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/* Output buffer.*/ \
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uint8_t ob[BQ_BUFFER_SIZE(SERIAL_USB_BUFFERS_NUMBER, \
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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 *sdup);
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void sduStart(SerialUSBDriver *sdup, const SerialUSBConfig *config);
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void sduStop(SerialUSBDriver *sdup);
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void sduDisconnectI(SerialUSBDriver *sdup);
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void sduConfigureHookI(SerialUSBDriver *sdup);
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bool sduRequestsHook(USBDriver *usbp);
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void sduSOFHookI(SerialUSBDriver *sdup);
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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 == TRUE */
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#endif /* _SERIAL_USB_H_ */
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/** @} */
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