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/**
******************************************************************************
* @file Src/usbd_cdc_ecm_if_template.c
* @author MCD Application Team
* @brief Source file for USBD CDC_ECM interface
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2019 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/*
Include here LwIP files if used
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma data_alignment=4
#endif
__ALIGN_BEGIN static uint8_t UserRxBuffer[CDC_ECM_ETH_MAX_SEGSZE + 100]__ALIGN_END; /* Received Data over USB are stored in this buffer */
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma data_alignment=4
#endif
__ALIGN_BEGIN static uint8_t UserTxBuffer[CDC_ECM_ETH_MAX_SEGSZE + 100]__ALIGN_END; /* Received Data over CDC_ECM (CDC_ECM interface) are stored in this buffer */
static uint8_t CDC_ECMInitialized = 0U;
/* USB handler declaration */
extern USBD_HandleTypeDef USBD_Device;
/* Private function prototypes -----------------------------------------------*/
static int8_t CDC_ECM_Itf_Init(void);
static int8_t CDC_ECM_Itf_DeInit(void);
static int8_t CDC_ECM_Itf_Control(uint8_t cmd, uint8_t *pbuf, uint16_t length);
static int8_t CDC_ECM_Itf_Receive(uint8_t *pbuf, uint32_t *Len);
static int8_t CDC_ECM_Itf_TransmitCplt(uint8_t *pbuf, uint32_t *Len, uint8_t epnum);
static int8_t CDC_ECM_Itf_Process(USBD_HandleTypeDef *pdev);
USBD_CDC_ECM_ItfTypeDef USBD_CDC_ECM_fops =
{
CDC_ECM_Itf_Init,
CDC_ECM_Itf_DeInit,
CDC_ECM_Itf_Control,
CDC_ECM_Itf_Receive,
CDC_ECM_Itf_TransmitCplt,
CDC_ECM_Itf_Process,
(uint8_t *)CDC_ECM_MAC_STR_DESC,
};
/* Private functions ---------------------------------------------------------*/
/**
* @brief CDC_ECM_Itf_Init
* Initializes the CDC_ECM media low layer
* @param None
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_ECM_Itf_Init(void)
{
if (CDC_ECMInitialized == 0U)
{
/*
Initialize the TCP/IP stack here
*/
CDC_ECMInitialized = 1U;
}
/* Set Application Buffers */
(void)USBD_CDC_ECM_SetTxBuffer(&USBD_Device, UserTxBuffer, 0U);
(void)USBD_CDC_ECM_SetRxBuffer(&USBD_Device, UserRxBuffer);
return (0);
}
/**
* @brief CDC_ECM_Itf_DeInit
* DeInitializes the CDC_ECM media low layer
* @param None
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_ECM_Itf_DeInit(void)
{
USBD_CDC_ECM_HandleTypeDef *hcdc_cdc_ecm = (USBD_CDC_ECM_HandleTypeDef *)(USBD_Device.pClassData);
/* Notify application layer that link is down */
hcdc_cdc_ecm->LinkStatus = 0U;
return (0);
}
/**
* @brief CDC_ECM_Itf_Control
* Manage the CDC_ECM class requests
* @param Cmd: Command code
* @param Buf: Buffer containing command data (request parameters)
* @param Len: Number of data to be sent (in bytes)
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_ECM_Itf_Control(uint8_t cmd, uint8_t *pbuf, uint16_t length)
{
USBD_CDC_ECM_HandleTypeDef *hcdc_cdc_ecm = (USBD_CDC_ECM_HandleTypeDef *)(USBD_Device.pClassData);
switch (cmd)
{
case CDC_ECM_SEND_ENCAPSULATED_COMMAND:
/* Add your code here */
break;
case CDC_ECM_GET_ENCAPSULATED_RESPONSE:
/* Add your code here */
break;
case CDC_ECM_SET_ETH_MULTICAST_FILTERS:
/* Add your code here */
break;
case CDC_ECM_SET_ETH_PWRM_PATTERN_FILTER:
/* Add your code here */
break;
case CDC_ECM_GET_ETH_PWRM_PATTERN_FILTER:
/* Add your code here */
break;
case CDC_ECM_SET_ETH_PACKET_FILTER:
/* Check if this is the first time we enter */
if (hcdc_cdc_ecm->LinkStatus == 0U)
{
/*
Setup the Link up at TCP/IP level
*/
hcdc_cdc_ecm->LinkStatus = 1U;
/* Modification for MacOS which doesn't send SetInterface before receiving INs */
if (hcdc_cdc_ecm->NotificationStatus == 0U)
{
/* Send notification: NETWORK_CONNECTION Event */
(void)USBD_CDC_ECM_SendNotification(&USBD_Device, NETWORK_CONNECTION,
CDC_ECM_NET_CONNECTED, NULL);
/* Prepare for sending Connection Speed Change notification */
hcdc_cdc_ecm->NotificationStatus = 1U;
}
}
/* Add your code here */
break;
case CDC_ECM_GET_ETH_STATISTIC:
/* Add your code here */
break;
default:
break;
}
UNUSED(length);
UNUSED(pbuf);
return (0);
}
/**
* @brief CDC_ECM_Itf_Receive
* Data received over USB OUT endpoint are sent over CDC_ECM interface
* through this function.
* @param Buf: Buffer of data to be transmitted
* @param Len: Number of data received (in bytes)
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_ECM_Itf_Receive(uint8_t *Buf, uint32_t *Len)
{
/* Get the CDC_ECM handler pointer */
USBD_CDC_ECM_HandleTypeDef *hcdc_cdc_ecm = (USBD_CDC_ECM_HandleTypeDef *)(USBD_Device.pClassData);
/* Call Eth buffer processing */
hcdc_cdc_ecm->RxState = 1U;
UNUSED(Len);
UNUSED(Buf);
return (0);
}
/**
* @brief CDC_ECM_Itf_TransmitCplt
* Data transmitted callback
*
* @note
* This function is IN transfer complete callback used to inform user that
* the submitted Data is successfully sent over USB.
*
* @param Buf: Buffer of data to be received
* @param Len: Number of data received (in bytes)
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_ECM_Itf_TransmitCplt(uint8_t *Buf, uint32_t *Len, uint8_t epnum)
{
UNUSED(Buf);
UNUSED(Len);
UNUSED(epnum);
return (0);
}
/**
* @brief CDC_ECM_Itf_Process
* Data received over USB OUT endpoint are sent over CDC_ECM interface
* through this function.
* @param pdef: pointer to the USB Device Handle
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_ECM_Itf_Process(USBD_HandleTypeDef *pdev)
{
/* Get the CDC_ECM handler pointer */
USBD_CDC_ECM_HandleTypeDef *hcdc_cdc_ecm = (USBD_CDC_ECM_HandleTypeDef *)(pdev->pClassData);
if ((hcdc_cdc_ecm != NULL) && (hcdc_cdc_ecm->LinkStatus != 0U))
{
/*
Read a received packet from the Ethernet buffers and send it
to the lwIP for handling
Call here the TCP/IP background tasks.
*/
}
return (0);
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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