438 lines
12 KiB
C
438 lines
12 KiB
C
/**
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**************************************************************************
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* @file cdc_class.c
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* @version v2.0.9
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* @date 2022-06-28
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* @brief usb cdc class type
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**************************************************************************
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* Copyright notice & Disclaimer
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*
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* The software Board Support Package (BSP) that is made available to
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* download from Artery official website is the copyrighted work of Artery.
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* Artery authorizes customers to use, copy, and distribute the BSP
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* software and its related documentation for the purpose of design and
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* development in conjunction with Artery microcontrollers. Use of the
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* software is governed by this copyright notice and the following disclaimer.
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*
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* THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
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* GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
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* TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
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* STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
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* INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
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*
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**************************************************************************
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*/
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#include "usbd_core.h"
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#include "cdc_class.h"
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#include "cdc_desc.h"
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/** @addtogroup AT32F435_437_middlewares_usbd_class
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* @{
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*/
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/** @defgroup USB_cdc_class
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* @brief usb device class cdc demo
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* @{
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*/
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/** @defgroup USB_cdc_class_private_functions
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* @{
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*/
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static usb_sts_type class_init_handler(void *udev);
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static usb_sts_type class_clear_handler(void *udev);
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static usb_sts_type class_setup_handler(void *udev, usb_setup_type *setup);
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static usb_sts_type class_ept0_tx_handler(void *udev);
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static usb_sts_type class_ept0_rx_handler(void *udev);
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static usb_sts_type class_in_handler(void *udev, uint8_t ept_num);
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static usb_sts_type class_out_handler(void *udev, uint8_t ept_num);
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static usb_sts_type class_sof_handler(void *udev);
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static usb_sts_type class_event_handler(void *udev, usbd_event_type event);
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static usb_sts_type cdc_struct_init(cdc_struct_type *pcdc);
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extern void usb_usart_config( linecoding_type linecoding);
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static void usb_vcp_cmd_process(void *udev, uint8_t cmd, uint8_t *buff, uint16_t len);
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linecoding_type linecoding =
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{
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115200,
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0,
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0,
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8
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};
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/* cdc data struct */
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cdc_struct_type cdc_struct;
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/* usb device class handler */
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usbd_class_handler cdc_class_handler =
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{
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class_init_handler,
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class_clear_handler,
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class_setup_handler,
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class_ept0_tx_handler,
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class_ept0_rx_handler,
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class_in_handler,
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class_out_handler,
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class_sof_handler,
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class_event_handler,
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&cdc_struct
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};
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/**
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* @brief initialize usb custom hid endpoint
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* @param udev: to the structure of usbd_core_type
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_init_handler(void *udev)
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{
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usb_sts_type status = USB_OK;
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usbd_core_type *pudev = (usbd_core_type *)udev;
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cdc_struct_type *pcdc = (cdc_struct_type *)pudev->class_handler->pdata;
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/* init cdc struct */
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cdc_struct_init(pcdc);
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/* open in endpoint */
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usbd_ept_open(pudev, USBD_CDC_INT_EPT, EPT_INT_TYPE, USBD_CDC_CMD_MAXPACKET_SIZE);
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/* open in endpoint */
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usbd_ept_open(pudev, USBD_CDC_BULK_IN_EPT, EPT_BULK_TYPE, USBD_CDC_IN_MAXPACKET_SIZE);
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/* open out endpoint */
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usbd_ept_open(pudev, USBD_CDC_BULK_OUT_EPT, EPT_BULK_TYPE, USBD_CDC_OUT_MAXPACKET_SIZE);
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/* set out endpoint to receive status */
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usbd_ept_recv(pudev, USBD_CDC_BULK_OUT_EPT, pcdc->g_rx_buff, USBD_CDC_OUT_MAXPACKET_SIZE);
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return status;
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}
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/**
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* @brief clear endpoint or other state
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* @param udev: to the structure of usbd_core_type
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_clear_handler(void *udev)
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{
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usb_sts_type status = USB_OK;
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usbd_core_type *pudev = (usbd_core_type *)udev;
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/* close in endpoint */
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usbd_ept_close(pudev, USBD_CDC_INT_EPT);
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/* close in endpoint */
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usbd_ept_close(pudev, USBD_CDC_BULK_IN_EPT);
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/* close out endpoint */
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usbd_ept_close(pudev, USBD_CDC_BULK_OUT_EPT);
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return status;
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}
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/**
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* @brief usb device class setup request handler
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* @param udev: to the structure of usbd_core_type
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* @param setup: setup packet
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_setup_handler(void *udev, usb_setup_type *setup)
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{
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usb_sts_type status = USB_OK;
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usbd_core_type *pudev = (usbd_core_type *)udev;
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cdc_struct_type *pcdc = (cdc_struct_type *)pudev->class_handler->pdata;
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switch(setup->bmRequestType & USB_REQ_TYPE_RESERVED)
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{
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/* class request */
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case USB_REQ_TYPE_CLASS:
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if(setup->wLength)
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{
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if(setup->bmRequestType & USB_REQ_DIR_DTH)
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{
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usb_vcp_cmd_process(udev, setup->bRequest, pcdc->g_cmd, setup->wLength);
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usbd_ctrl_send(pudev, pcdc->g_cmd, setup->wLength);
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}
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else
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{
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pcdc->g_req = setup->bRequest;
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pcdc->g_len = setup->wLength;
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usbd_ctrl_recv(pudev, pcdc->g_cmd, pcdc->g_len);
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}
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}
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break;
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/* standard request */
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case USB_REQ_TYPE_STANDARD:
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switch(setup->bRequest)
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{
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case USB_STD_REQ_GET_DESCRIPTOR:
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usbd_ctrl_unsupport(pudev);
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break;
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case USB_STD_REQ_GET_INTERFACE:
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usbd_ctrl_send(pudev, (uint8_t *)&pcdc->alt_setting, 1);
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break;
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case USB_STD_REQ_SET_INTERFACE:
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pcdc->alt_setting = setup->wValue;
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break;
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default:
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break;
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}
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break;
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default:
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usbd_ctrl_unsupport(pudev);
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break;
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}
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return status;
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}
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/**
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* @brief usb device endpoint 0 in status stage complete
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* @param udev: to the structure of usbd_core_type
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_ept0_tx_handler(void *udev)
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{
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usb_sts_type status = USB_OK;
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/* ...user code... */
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return status;
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}
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/**
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* @brief usb device endpoint 0 out status stage complete
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* @param udev: usb device core handler type
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_ept0_rx_handler(void *udev)
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{
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usb_sts_type status = USB_OK;
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usbd_core_type *pudev = (usbd_core_type *)udev;
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cdc_struct_type *pcdc = (cdc_struct_type *)pudev->class_handler->pdata;
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uint32_t recv_len = usbd_get_recv_len(pudev, 0);
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/* ...user code... */
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if( pcdc->g_req == SET_LINE_CODING)
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{
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/* class process */
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usb_vcp_cmd_process(udev, pcdc->g_req, pcdc->g_cmd, recv_len);
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}
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return status;
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}
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/**
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* @brief usb device transmision complete handler
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* @param udev: to the structure of usbd_core_type
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* @param ept_num: endpoint number
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_in_handler(void *udev, uint8_t ept_num)
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{
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usbd_core_type *pudev = (usbd_core_type *)udev;
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cdc_struct_type *pcdc = (cdc_struct_type *)pudev->class_handler->pdata;
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usb_sts_type status = USB_OK;
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/* ...user code...
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trans next packet data
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*/
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usbd_flush_tx_fifo(pudev, ept_num);
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pcdc->g_tx_completed = 1;
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return status;
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}
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/**
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* @brief usb device endpoint receive data
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* @param udev: to the structure of usbd_core_type
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* @param ept_num: endpoint number
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_out_handler(void *udev, uint8_t ept_num)
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{
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usb_sts_type status = USB_OK;
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usbd_core_type *pudev = (usbd_core_type *)udev;
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cdc_struct_type *pcdc = (cdc_struct_type *)pudev->class_handler->pdata;
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/* get endpoint receive data length */
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pcdc->g_rxlen = usbd_get_recv_len(pudev, ept_num);
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/*set recv flag*/
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pcdc->g_rx_completed = 1;
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return status;
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}
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/**
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* @brief usb device sof handler
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* @param udev: to the structure of usbd_core_type
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_sof_handler(void *udev)
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{
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usb_sts_type status = USB_OK;
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/* ...user code... */
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return status;
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}
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/**
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* @brief usb device event handler
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* @param udev: to the structure of usbd_core_type
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* @param event: usb device event
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* @retval status of usb_sts_type
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*/
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static usb_sts_type class_event_handler(void *udev, usbd_event_type event)
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{
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usb_sts_type status = USB_OK;
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switch(event)
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{
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case USBD_RESET_EVENT:
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/* ...user code... */
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break;
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case USBD_SUSPEND_EVENT:
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/* ...user code... */
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break;
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case USBD_WAKEUP_EVENT:
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/* ...user code... */
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break;
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case USBD_INISOINCOM_EVENT:
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break;
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case USBD_OUTISOINCOM_EVENT:
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break;
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default:
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break;
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}
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return status;
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}
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/**
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* @brief usb device cdc init
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* @param pcdc: to the structure of cdc_struct
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* @retval status of usb_sts_type
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*/
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static usb_sts_type cdc_struct_init(cdc_struct_type *pcdc)
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{
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pcdc->g_tx_completed = 1;
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pcdc->g_rx_completed = 0;
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pcdc->alt_setting = 0;
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pcdc->linecoding.bitrate = linecoding.bitrate;
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pcdc->linecoding.data = linecoding.data;
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pcdc->linecoding.format = linecoding.format;
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pcdc->linecoding.parity = linecoding.parity;
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return USB_OK;
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}
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/**
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* @brief usb device class rx data process
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* @param udev: to the structure of usbd_core_type
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* @param recv_data: receive buffer
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* @retval receive data len
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*/
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uint16_t usb_vcp_get_rxdata(void *udev, uint8_t *recv_data)
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{
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uint16_t i_index = 0;
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uint16_t tmp_len = 0;
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usbd_core_type *pudev = (usbd_core_type *)udev;
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cdc_struct_type *pcdc = (cdc_struct_type *)pudev->class_handler->pdata;
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if(pcdc->g_rx_completed == 0)
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{
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return 0;
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}
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pcdc->g_rx_completed = 0;
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tmp_len = pcdc->g_rxlen;
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for(i_index = 0; i_index < pcdc->g_rxlen; i_index ++)
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{
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recv_data[i_index] = pcdc->g_rx_buff[i_index];
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}
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usbd_ept_recv(pudev, USBD_CDC_BULK_OUT_EPT, pcdc->g_rx_buff, USBD_CDC_OUT_MAXPACKET_SIZE);
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return tmp_len;
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}
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/**
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* @brief usb device class send data
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* @param udev: to the structure of usbd_core_type
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* @param send_data: send data buffer
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* @param len: send length
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* @retval error status
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*/
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error_status usb_vcp_send_data(void *udev, uint8_t *send_data, uint16_t len)
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{
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error_status status = SUCCESS;
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usbd_core_type *pudev = (usbd_core_type *)udev;
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cdc_struct_type *pcdc = (cdc_struct_type *)pudev->class_handler->pdata;
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if(pcdc->g_tx_completed)
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{
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pcdc->g_tx_completed = 0;
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usbd_ept_send(pudev, USBD_CDC_BULK_IN_EPT, send_data, len);
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}
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else
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{
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status = ERROR;
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}
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return status;
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}
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/**
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* @brief usb device function
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* @param udev: to the structure of usbd_core_type
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* @param cmd: request number
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* @param buff: request buffer
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* @param len: buffer length
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* @retval none
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*/
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static void usb_vcp_cmd_process(void *udev, uint8_t cmd, uint8_t *buff, uint16_t len)
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{
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usbd_core_type *pudev = (usbd_core_type *)udev;
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cdc_struct_type *pcdc = (cdc_struct_type *)pudev->class_handler->pdata;
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switch(cmd)
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{
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case SET_LINE_CODING:
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pcdc->linecoding.bitrate = (uint32_t)(buff[0] | (buff[1] << 8) | (buff[2] << 16) | (buff[3] <<24));
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pcdc->linecoding.format = buff[4];
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pcdc->linecoding.parity = buff[5];
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pcdc->linecoding.data = buff[6];
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#ifdef USB_VIRTUAL_COMPORT
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/* set hardware usart */
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usb_usart_config(pcdc->linecoding);
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#endif
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break;
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case GET_LINE_CODING:
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buff[0] = (uint8_t)pcdc->linecoding.bitrate;
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buff[1] = (uint8_t)(pcdc->linecoding.bitrate >> 8);
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buff[2] = (uint8_t)(pcdc->linecoding.bitrate >> 16);
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buff[3] = (uint8_t)(pcdc->linecoding.bitrate >> 24);
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buff[4] = (uint8_t)(pcdc->linecoding.format);
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buff[5] = (uint8_t)(pcdc->linecoding.parity);
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buff[6] = (uint8_t)(pcdc->linecoding.data);
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break;
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default:
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break;
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}
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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