/*!
|
\file cdc_acm_core.h
|
\brief the header file of cdc acm driver
|
|
\version 2020-08-01, V3.0.0, firmware for GD32F30x
|
*/
|
|
/*
|
Copyright (c) 2020, GigaDevice Semiconductor Inc.
|
|
Redistribution and use in source and binary forms, with or without modification,
|
are permitted provided that the following conditions are met:
|
|
1. Redistributions of source code must retain the above copyright notice, this
|
list of conditions and the following disclaimer.
|
2. Redistributions in binary form must reproduce the above copyright notice,
|
this list of conditions and the following disclaimer in the documentation
|
and/or other materials provided with the distribution.
|
3. Neither the name of the copyright holder nor the names of its contributors
|
may be used to endorse or promote products derived from this software without
|
specific prior written permission.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
OF SUCH DAMAGE.
|
*/
|
|
#ifndef __CDC_ACM_CORE_H
|
#define __CDC_ACM_CORE_H
|
|
#include "usbd_enum.h"
|
|
/* communications device class code */
|
#define USB_CLASS_CDC 0x02U
|
|
/* CDC subclass code */
|
#define USB_CDC_SUBCLASS_DLCM 0x01U
|
#define USB_CDC_SUBCLASS_ACM 0x02U
|
|
/* communications interface class control protocol codes */
|
#define USB_CDC_PROTOCOL_NONE 0x00U
|
#define USB_CDC_PROTOCOL_AT 0x01U
|
|
/* data interface class code */
|
#define USB_CLASS_DATA 0x0AU
|
|
#define USB_DESCTYPE_CDC_ACM 0x21U
|
#define USB_DESCTYPE_CS_INTERFACE 0x24U
|
|
#define USB_CDC_ACM_CONFIG_DESC_SIZE 0x43U
|
|
/* class-specific notification codes for PSTN subclasses */
|
#define USB_CDC_NOTIFY_SERIAL_STATE 0x20U
|
|
/* class-specific request codes */
|
#define SEND_ENCAPSULATED_COMMAND 0x00U
|
#define GET_ENCAPSULATED_RESPONSE 0x01U
|
#define SET_COMM_FEATURE 0x02U
|
#define GET_COMM_FEATURE 0x03U
|
#define CLEAR_COMM_FEATURE 0x04U
|
#define SET_LINE_CODING 0x20U
|
#define GET_LINE_CODING 0x21U
|
#define SET_CONTROL_LINE_STATE 0x22U
|
#define SEND_BREAK 0x23U
|
#define NO_CMD 0xFFU
|
|
#pragma pack(1)
|
|
/* CDC ACM line coding struct */
|
typedef struct {
|
uint32_t dwDTERate; /*!< data terminal rate */
|
uint8_t bCharFormat; /*!< stop bits */
|
uint8_t bParityType; /*!< parity */
|
uint8_t bDataBits; /*!< data bits */
|
} acm_line;
|
|
/* notification structure */
|
typedef struct {
|
uint8_t bmRequestType; /*!< type of request */
|
uint8_t bNotification; /*!< communication interface class notifications */
|
uint16_t wValue; /*!< value of notification */
|
uint16_t wIndex; /*!< index of interface */
|
uint16_t wLength; /*!< length of notification data */
|
} acm_notification;
|
|
/* header function struct */
|
typedef struct {
|
usb_desc_header header; /*!< descriptor header, including type and size. */
|
uint8_t bDescriptorSubtype; /*!< bDescriptorSubtype: header function descriptor */
|
uint16_t bcdCDC; /*!< bcdCDC: low byte of spec release number (CDC1.10) */
|
} usb_desc_header_func;
|
|
/* call managment function struct */
|
typedef struct {
|
usb_desc_header header; /*!< descriptor header, including type and size. */
|
uint8_t bDescriptorSubtype; /*!< bDescriptorSubtype: call management function descriptor */
|
uint8_t bmCapabilities; /*!< bmCapabilities: D0 is reset, D1 is ignored */
|
uint8_t bDataInterface; /*!< bDataInterface: 1 interface used for call management */
|
} usb_desc_call_managment_func;
|
|
/* acm function struct */
|
typedef struct {
|
usb_desc_header header; /*!< descriptor header, including type and size. */
|
uint8_t bDescriptorSubtype; /*!< bDescriptorSubtype: abstract control management descriptor */
|
uint8_t bmCapabilities; /*!< bmCapabilities: D1 */
|
} usb_desc_acm_func;
|
|
/* union function struct */
|
typedef struct {
|
usb_desc_header header; /*!< descriptor header, including type and size. */
|
uint8_t bDescriptorSubtype; /*!< bDescriptorSubtype: union function descriptor */
|
uint8_t bMasterInterface; /*!< bMasterInterface: communication class interface */
|
uint8_t bSlaveInterface0; /*!< bSlaveInterface0: data class interface */
|
} usb_desc_union_func;
|
|
#pragma pack()
|
/* configuration descriptor struct */
|
typedef struct {
|
usb_desc_config config;
|
usb_desc_itf cmd_itf;
|
usb_desc_header_func cdc_header;
|
usb_desc_call_managment_func cdc_call_managment;
|
usb_desc_acm_func cdc_acm;
|
usb_desc_union_func cdc_union;
|
usb_desc_ep cdc_cmd_endpoint;
|
usb_desc_itf cdc_data_interface;
|
usb_desc_ep cdc_out_endpoint;
|
usb_desc_ep cdc_in_endpoint;
|
} usb_cdc_desc_config_set;
|
|
#define USB_CDC_RX_LEN 64U
|
|
typedef struct {
|
uint8_t pre_packet_send;
|
uint8_t packet_sent;
|
uint8_t packet_receive;
|
|
uint8_t data[USB_CDC_RX_LEN];
|
|
uint32_t receive_length;
|
|
acm_line line_coding;
|
} usb_cdc_handler;
|
|
extern usb_desc cdc_desc;
|
extern usb_class cdc_class;
|
|
/* function declarations */
|
/* receive CDC ACM data */
|
void cdc_acm_data_receive(usb_dev *udev);
|
/* send CDC ACM data */
|
void cdc_acm_data_send(usb_dev *udev);
|
/* check cdc acm is ready for data transfer */
|
uint8_t cdc_acm_check_ready(usb_dev *udev);
|
|
#endif /* __CDC_ACM_CORE_H */
|
