/*!
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\file usbd_lld_core.h
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\brief USB device low level driver core
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\version 2020-08-01, V3.0.0, firmware for GD32F30x
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*/
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/*
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Copyright (c) 2020, GigaDevice Semiconductor Inc.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#ifndef __USBD_LLD_CORE_H
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#define __USBD_LLD_CORE_H
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#include "usbd_lld_regs.h"
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#include "usbd_core.h"
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/* double buffer endpoint direction enumeration */
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enum dbuf_ep_dir
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{
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DBUF_EP_IN, /*!< double buffer in direction */
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DBUF_EP_OUT, /*!< double buffer out direction */
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DBUF_EP_ERR, /*!< double buffer error direction */
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};
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/* USBD endpoint ram struct */
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typedef struct
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{
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__IO uint32_t tx_addr; /*!< transmission address */
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__IO uint32_t tx_count; /*!< transmission count */
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__IO uint32_t rx_addr; /*!< reception address */
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__IO uint32_t rx_count; /*!< reception count */
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} usbd_ep_ram;
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extern struct _usb_handler usbd_drv_handler;
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/* USB core driver struct */
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typedef struct
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{
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usb_basic basic;
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usb_dev *dev;
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} usb_core_drv;
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extern usb_core_drv usbd_core;
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/* function declarations */
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/* free buffer used from application by toggling the SW_BUF byte */
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void user_buffer_free (uint8_t ep_num, uint8_t dir);
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#endif /* __USBD_LLD_CORE_H */
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