--- /dev/null
+/**
+ ******************************************************************************
+ * @file usbd_cdc_core.c
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 22-July-2011
+ * @brief This file provides the high layer firmware functions to manage the
+ * following functionalities of the USB CDC Class:
+ * - Initialization and Configuration of high and low layer
+ * - Enumeration as CDC Device (and enumeration for each implemented memory interface)
+ * - OUT/IN data transfer
+ * - Command IN transfer (class requests management)
+ * - Error management
+ *
+ * @verbatim
+ *
+ * ===================================================================
+ * CDC Class Driver Description
+ * ===================================================================
+ * This driver manages the "Universal Serial Bus Class Definitions for Communications Devices
+ * Revision 1.2 November 16, 2007" and the sub-protocol specification of "Universal Serial Bus
+ * Communications Class Subclass Specification for PSTN Devices Revision 1.2 February 9, 2007"
+ * This driver implements the following aspects of the specification:
+ * - Device descriptor management
+ * - Configuration descriptor management
+ * - Enumeration as CDC device with 2 data endpoints (IN and OUT) and 1 command endpoint (IN)
+ * - Requests management (as described in section 6.2 in specification)
+ * - Abstract Control Model compliant
+ * - Union Functional collection (using 1 IN endpoint for control)
+ * - Data interface class
+
+ * @note
+ * For the Abstract Control Model, this core allows only transmitting the requests to
+ * lower layer dispatcher (ie. usbd_cdc_vcp.c/.h) which should manage each request and
+ * perform relative actions.
+ *
+ * These aspects may be enriched or modified for a specific user application.
+ *
+ * This driver doesn't implement the following aspects of the specification
+ * (but it is possible to manage these features with some modifications on this driver):
+ * - Any class-specific aspect relative to communication classes should be managed by user application.
+ * - All communication classes other than PSTN are not managed
+ *
+ * @endverbatim
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+ * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+ * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+ * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+ * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+ * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+ *
+ * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc_core.h"
+#include "usbd_desc.h"
+#include "usbd_req.h"
+
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @{
+ */
+
+
+/** @defgroup usbd_cdc
+ * @brief usbd core module
+ * @{
+ */
+
+/** @defgroup usbd_cdc_Private_TypesDefinitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup usbd_cdc_Private_Defines
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup usbd_cdc_Private_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup usbd_cdc_Private_FunctionPrototypes
+ * @{
+ */
+
+/*********************************************
+ CDC Device library callbacks
+ *********************************************/
+static uint8_t usbd_cdc_Init (void *pdev, uint8_t cfgidx);
+static uint8_t usbd_cdc_DeInit (void *pdev, uint8_t cfgidx);
+static uint8_t usbd_cdc_Setup (void *pdev, USB_SETUP_REQ *req);
+static uint8_t usbd_cdc_EP0_RxReady (void *pdev);
+static uint8_t usbd_cdc_DataIn (void *pdev, uint8_t epnum);
+static uint8_t usbd_cdc_DataOut (void *pdev, uint8_t epnum);
+static uint8_t usbd_cdc_SOF (void *pdev);
+
+/*********************************************
+ CDC specific management functions
+ *********************************************/
+static void Handle_USBAsynchXfer (void *pdev);
+static uint8_t *USBD_cdc_GetCfgDesc (uint8_t speed, uint16_t *length);
+#ifdef USE_USB_OTG_HS
+static uint8_t *USBD_cdc_GetOtherCfgDesc (uint8_t speed, uint16_t *length);
+#endif
+/**
+ * @}
+ */
+
+/** @defgroup usbd_cdc_Private_Variables
+ * @{
+ */
+extern CDC_IF_Prop_TypeDef APP_FOPS;
+extern uint8_t USBD_DeviceDesc [USB_SIZ_DEVICE_DESC];
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN uint8_t usbd_cdc_CfgDesc [USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END ;
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN uint8_t usbd_cdc_OtherCfgDesc [USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END ;
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN static __IO uint32_t usbd_cdc_AltSet __ALIGN_END = 0;
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN uint8_t USB_Rx_Buffer [CDC_DATA_MAX_PACKET_SIZE] __ALIGN_END ;
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN uint8_t APP_Rx_Buffer [APP_RX_DATA_SIZE] __ALIGN_END ;
+
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN uint8_t CmdBuff[CDC_CMD_PACKET_SZE] __ALIGN_END ;
+
+uint32_t APP_Rx_ptr_in = 0;
+uint32_t APP_Rx_ptr_out = 0;
+uint32_t APP_Rx_length = 0;
+
+uint8_t USB_Tx_State = 0;
+
+static uint32_t cdcCmd = 0xFF;
+static uint32_t cdcLen = 0;
+
+/* CDC interface class callbacks structure */
+USBD_Class_cb_TypeDef USBD_CDC_cb =
+{
+ usbd_cdc_Init,
+ usbd_cdc_DeInit,
+ usbd_cdc_Setup,
+ NULL, /* EP0_TxSent, */
+ usbd_cdc_EP0_RxReady,
+ usbd_cdc_DataIn,
+ usbd_cdc_DataOut,
+ usbd_cdc_SOF,
+ NULL,
+ NULL,
+ USBD_cdc_GetCfgDesc,
+#ifdef USE_USB_OTG_HS
+ USBD_cdc_GetOtherCfgDesc, /* use same cobfig as per FS */
+#endif /* USE_USB_OTG_HS */
+};
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+/* USB CDC device Configuration Descriptor */
+__ALIGN_BEGIN uint8_t usbd_cdc_CfgDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
+{
+ /*Configuration Descriptor*/
+ 0x09, /* bLength: Configuration Descriptor size */
+ USB_CONFIGURATION_DESCRIPTOR_TYPE, /* bDescriptorType: Configuration */
+ USB_CDC_CONFIG_DESC_SIZ, /* wTotalLength:no of returned bytes */
+ 0x00,
+ 0x02, /* bNumInterfaces: 2 interface */
+ 0x01, /* bConfigurationValue: Configuration value */
+ 0x00, /* iConfiguration: Index of string descriptor describing the configuration */
+ 0xC0, /* bmAttributes: self powered */
+ 0x32, /* MaxPower 0 mA */
+
+ /*---------------------------------------------------------------------------*/
+
+ /*Interface Descriptor */
+ 0x09, /* bLength: Interface Descriptor size */
+ USB_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType: Interface */
+ /* Interface descriptor type */
+ 0x00, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x01, /* bNumEndpoints: One endpoints used */
+ 0x02, /* bInterfaceClass: Communication Interface Class */
+ 0x02, /* bInterfaceSubClass: Abstract Control Model */
+ 0x01, /* bInterfaceProtocol: Common AT commands */
+ 0x00, /* iInterface: */
+
+ /*Header Functional Descriptor*/
+ 0x05, /* bLength: Endpoint Descriptor size */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x00, /* bDescriptorSubtype: Header Func Desc */
+ 0x10, /* bcdCDC: spec release number */
+ 0x01,
+
+ /*Call Management Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x01, /* bDescriptorSubtype: Call Management Func Desc */
+ 0x00, /* bmCapabilities: D0+D1 */
+ 0x01, /* bDataInterface: 1 */
+
+ /*ACM Functional Descriptor*/
+ 0x04, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x02, /* bDescriptorSubtype: Abstract Control Management desc */
+ 0x02, /* bmCapabilities */
+
+ /*Union Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x06, /* bDescriptorSubtype: Union func desc */
+ 0x00, /* bMasterInterface: Communication class interface */
+ 0x01, /* bSlaveInterface0: Data Class Interface */
+
+ /*Endpoint 2 Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
+ CDC_CMD_EP, /* bEndpointAddress */
+ 0x03, /* bmAttributes: Interrupt */
+ LOBYTE(CDC_CMD_PACKET_SZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_CMD_PACKET_SZE),
+#ifdef USE_USB_OTG_HS
+ 0x10, /* bInterval: */
+#else
+ 0xFF, /* bInterval: */
+#endif /* USE_USB_OTG_HS */
+
+ /*---------------------------------------------------------------------------*/
+
+ /*Data class interface descriptor*/
+ 0x09, /* bLength: Endpoint Descriptor size */
+ USB_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType: */
+ 0x01, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x02, /* bNumEndpoints: Two endpoints used */
+ 0x0A, /* bInterfaceClass: CDC */
+ 0x00, /* bInterfaceSubClass: */
+ 0x00, /* bInterfaceProtocol: */
+ 0x00, /* iInterface: */
+
+ /*Endpoint OUT Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
+ CDC_OUT_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ LOBYTE(CDC_DATA_MAX_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_DATA_MAX_PACKET_SIZE),
+ 0x00, /* bInterval: ignore for Bulk transfer */
+
+ /*Endpoint IN Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
+ CDC_IN_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ LOBYTE(CDC_DATA_MAX_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_DATA_MAX_PACKET_SIZE),
+ 0x00 /* bInterval: ignore for Bulk transfer */
+} ;
+
+#ifdef USE_USB_OTG_HS
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN uint8_t usbd_cdc_OtherCfgDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
+{
+ 0x09, /* bLength: Configuation Descriptor size */
+ USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION,
+ USB_CDC_CONFIG_DESC_SIZ,
+ 0x00,
+ 0x02, /* bNumInterfaces: 2 interfaces */
+ 0x01, /* bConfigurationValue: */
+ 0x04, /* iConfiguration: */
+ 0xC0, /* bmAttributes: */
+ 0x32, /* MaxPower 100 mA */
+
+ /*Interface Descriptor */
+ 0x09, /* bLength: Interface Descriptor size */
+ USB_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType: Interface */
+ /* Interface descriptor type */
+ 0x00, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x01, /* bNumEndpoints: One endpoints used */
+ 0x02, /* bInterfaceClass: Communication Interface Class */
+ 0x02, /* bInterfaceSubClass: Abstract Control Model */
+ 0x01, /* bInterfaceProtocol: Common AT commands */
+ 0x00, /* iInterface: */
+
+ /*Header Functional Descriptor*/
+ 0x05, /* bLength: Endpoint Descriptor size */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x00, /* bDescriptorSubtype: Header Func Desc */
+ 0x10, /* bcdCDC: spec release number */
+ 0x01,
+
+ /*Call Management Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x01, /* bDescriptorSubtype: Call Management Func Desc */
+ 0x00, /* bmCapabilities: D0+D1 */
+ 0x01, /* bDataInterface: 1 */
+
+ /*ACM Functional Descriptor*/
+ 0x04, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x02, /* bDescriptorSubtype: Abstract Control Management desc */
+ 0x02, /* bmCapabilities */
+
+ /*Union Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x06, /* bDescriptorSubtype: Union func desc */
+ 0x00, /* bMasterInterface: Communication class interface */
+ 0x01, /* bSlaveInterface0: Data Class Interface */
+
+ /*Endpoint 2 Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
+ CDC_CMD_EP, /* bEndpointAddress */
+ 0x03, /* bmAttributes: Interrupt */
+ LOBYTE(CDC_CMD_PACKET_SZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_CMD_PACKET_SZE),
+ 0xFF, /* bInterval: */
+
+ /*---------------------------------------------------------------------------*/
+
+ /*Data class interface descriptor*/
+ 0x09, /* bLength: Endpoint Descriptor size */
+ USB_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType: */
+ 0x01, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x02, /* bNumEndpoints: Two endpoints used */
+ 0x0A, /* bInterfaceClass: CDC */
+ 0x00, /* bInterfaceSubClass: */
+ 0x00, /* bInterfaceProtocol: */
+ 0x00, /* iInterface: */
+
+ /*Endpoint OUT Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
+ CDC_OUT_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ 0x40, /* wMaxPacketSize: */
+ 0x00,
+ 0x00, /* bInterval: ignore for Bulk transfer */
+
+ /*Endpoint IN Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
+ CDC_IN_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ 0x40, /* wMaxPacketSize: */
+ 0x00,
+ 0x00 /* bInterval */
+};
+#endif /* USE_USB_OTG_HS */
+
+/**
+ * @}
+ */
+
+/** @defgroup usbd_cdc_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief usbd_cdc_Init
+ * Initilaize the CDC interface
+ * @param pdev: device instance
+ * @param cfgidx: Configuration index
+ * @retval status
+ */
+static uint8_t usbd_cdc_Init (void *pdev,
+ uint8_t cfgidx)
+{
+ uint8_t *pbuf;
+
+ /* Open EP IN */
+ DCD_EP_Open(pdev,
+ CDC_IN_EP,
+ CDC_DATA_IN_PACKET_SIZE,
+ USB_OTG_EP_BULK);
+
+ /* Open EP OUT */
+ DCD_EP_Open(pdev,
+ CDC_OUT_EP,
+ CDC_DATA_OUT_PACKET_SIZE,
+ USB_OTG_EP_BULK);
+
+ /* Open Command IN EP */
+ DCD_EP_Open(pdev,
+ CDC_CMD_EP,
+ CDC_CMD_PACKET_SZE,
+ USB_OTG_EP_INT);
+
+ pbuf = (uint8_t *)USBD_DeviceDesc;
+ pbuf[4] = DEVICE_CLASS_CDC;
+ pbuf[5] = DEVICE_SUBCLASS_CDC;
+
+ /* Initialize the Interface physical components */
+ APP_FOPS.pIf_Init();
+
+ /* Prepare Out endpoint to receive next packet */
+ DCD_EP_PrepareRx(pdev,
+ CDC_OUT_EP,
+ (uint8_t*)(USB_Rx_Buffer),
+ CDC_DATA_OUT_PACKET_SIZE);
+
+ return USBD_OK;
+}
+
+/**
+ * @brief usbd_cdc_Init
+ * DeInitialize the CDC layer
+ * @param pdev: device instance
+ * @param cfgidx: Configuration index
+ * @retval status
+ */
+static uint8_t usbd_cdc_DeInit (void *pdev,
+ uint8_t cfgidx)
+{
+ /* Open EP IN */
+ DCD_EP_Close(pdev,
+ CDC_IN_EP);
+
+ /* Open EP OUT */
+ DCD_EP_Close(pdev,
+ CDC_OUT_EP);
+
+ /* Open Command IN EP */
+ DCD_EP_Close(pdev,
+ CDC_CMD_EP);
+
+ /* Restore default state of the Interface physical components */
+ APP_FOPS.pIf_DeInit();
+
+ return USBD_OK;
+}
+
+/**
+ * @brief usbd_cdc_Setup
+ * Handle the CDC specific requests
+ * @param pdev: instance
+ * @param req: usb requests
+ * @retval status
+ */
+static uint8_t usbd_cdc_Setup (void *pdev,
+ USB_SETUP_REQ *req)
+{
+ uint16_t len;
+ uint8_t *pbuf;
+
+ switch (req->bmRequest & USB_REQ_TYPE_MASK)
+ {
+ /* CDC Class Requests -------------------------------*/
+ case USB_REQ_TYPE_CLASS :
+ /* Check if the request is a data setup packet */
+ if (req->wLength)
+ {
+ /* Check if the request is Device-to-Host */
+ if (req->bmRequest & 0x80)
+ {
+ /* Get the data to be sent to Host from interface layer */
+ APP_FOPS.pIf_Ctrl(req->bRequest, CmdBuff, req->wLength);
+
+ /* Send the data to the host */
+ USBD_CtlSendData (pdev,
+ CmdBuff,
+ req->wLength);
+ }
+ else /* Host-to-Device requeset */
+ {
+ /* Set the value of the current command to be processed */
+ cdcCmd = req->bRequest;
+ cdcLen = req->wLength;
+
+ /* Prepare the reception of the buffer over EP0
+ Next step: the received data will be managed in usbd_cdc_EP0_TxSent()
+ function. */
+ USBD_CtlPrepareRx (pdev,
+ CmdBuff,
+ req->wLength);
+ }
+ }
+ else /* No Data request */
+ {
+ /* Transfer the command to the interface layer */
+ APP_FOPS.pIf_Ctrl(req->bRequest, NULL, 0);
+ }
+
+ return USBD_OK;
+
+ default:
+ USBD_CtlError (pdev, req);
+ return USBD_FAIL;
+
+
+
+ /* Standard Requests -------------------------------*/
+ case USB_REQ_TYPE_STANDARD:
+ switch (req->bRequest)
+ {
+ case USB_REQ_GET_DESCRIPTOR:
+ if( (req->wValue >> 8) == CDC_DESCRIPTOR_TYPE)
+ {
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ pbuf = usbd_cdc_Desc;
+#else
+ pbuf = usbd_cdc_CfgDesc + 9 + (9 * USBD_ITF_MAX_NUM);
+#endif
+ len = MIN(USB_CDC_DESC_SIZ , req->wLength);
+ }
+
+ USBD_CtlSendData (pdev,
+ pbuf,
+ len);
+ break;
+
+ case USB_REQ_GET_INTERFACE :
+ USBD_CtlSendData (pdev,
+ (uint8_t *)&usbd_cdc_AltSet,
+ 1);
+ break;
+
+ case USB_REQ_SET_INTERFACE :
+ if ((uint8_t)(req->wValue) < USBD_ITF_MAX_NUM)
+ {
+ usbd_cdc_AltSet = (uint8_t)(req->wValue);
+ }
+ else
+ {
+ /* Call the error management function (command will be nacked */
+ USBD_CtlError (pdev, req);
+ }
+ break;
+ }
+ }
+ return USBD_OK;
+}
+
+/**
+ * @brief usbd_cdc_EP0_RxReady
+ * Data received on control endpoint
+ * @param pdev: device device instance
+ * @retval status
+ */
+static uint8_t usbd_cdc_EP0_RxReady (void *pdev)
+{
+ if (cdcCmd != NO_CMD)
+ {
+ /* Process the data */
+ APP_FOPS.pIf_Ctrl(cdcCmd, CmdBuff, cdcLen);
+
+ /* Reset the command variable to default value */
+ cdcCmd = NO_CMD;
+ }
+
+ return USBD_OK;
+}
+
+/**
+ * @brief usbd_audio_DataIn
+ * Data sent on non-control IN endpoint
+ * @param pdev: device instance
+ * @param epnum: endpoint number
+ * @retval status
+ */
+static uint8_t usbd_cdc_DataIn (void *pdev, uint8_t epnum)
+{
+ uint16_t USB_Tx_ptr;
+ uint16_t USB_Tx_length;
+
+ if (USB_Tx_State == 1)
+ {
+ if (APP_Rx_length == 0)
+ {
+ USB_Tx_State = 0;
+ }
+ else
+ {
+ if (APP_Rx_length > CDC_DATA_IN_PACKET_SIZE){
+ USB_Tx_ptr = APP_Rx_ptr_out;
+ USB_Tx_length = CDC_DATA_IN_PACKET_SIZE;
+
+ APP_Rx_ptr_out += CDC_DATA_IN_PACKET_SIZE;
+ APP_Rx_length -= CDC_DATA_IN_PACKET_SIZE;
+ }
+ else
+ {
+ USB_Tx_ptr = APP_Rx_ptr_out;
+ USB_Tx_length = APP_Rx_length;
+
+ APP_Rx_ptr_out += APP_Rx_length;
+ APP_Rx_length = 0;
+ }
+
+ /* Prepare the available data buffer to be sent on IN endpoint */
+ DCD_EP_Tx (pdev,
+ CDC_IN_EP,
+ (uint8_t*)&APP_Rx_Buffer[USB_Tx_ptr],
+ USB_Tx_length);
+ }
+ }
+
+ return USBD_OK;
+}
+
+/**
+ * @brief usbd_audio_DataOut
+ * Data received on non-control Out endpoint
+ * @param pdev: device instance
+ * @param epnum: endpoint number
+ * @retval status
+ */
+static uint8_t usbd_cdc_DataOut (void *pdev, uint8_t epnum)
+{
+ uint16_t USB_Rx_Cnt;
+
+ /* Get the received data buffer and update the counter */
+ USB_Rx_Cnt = ((USB_OTG_CORE_HANDLE*)pdev)->dev.out_ep[epnum].xfer_count;
+
+ /* USB data will be immediately processed, this allow next USB traffic being
+ NAKed till the end of the application Xfer */
+ APP_FOPS.pIf_DataRx(USB_Rx_Buffer, USB_Rx_Cnt);
+
+ /* Prepare Out endpoint to receive next packet */
+ DCD_EP_PrepareRx(pdev,
+ CDC_OUT_EP,
+ (uint8_t*)(USB_Rx_Buffer),
+ CDC_DATA_OUT_PACKET_SIZE);
+
+ return USBD_OK;
+}
+
+/**
+ * @brief usbd_audio_SOF
+ * Start Of Frame event management
+ * @param pdev: instance
+ * @param epnum: endpoint number
+ * @retval status
+ */
+static uint8_t usbd_cdc_SOF (void *pdev)
+{
+ static uint32_t FrameCount = 0;
+
+ if (FrameCount++ == CDC_IN_FRAME_INTERVAL)
+ {
+ /* Reset the frame counter */
+ FrameCount = 0;
+
+ /* Check the data to be sent through IN pipe */
+ Handle_USBAsynchXfer(pdev);
+ }
+
+ return USBD_OK;
+}
+
+/**
+ * @brief Handle_USBAsynchXfer
+ * Send data to USB
+ * @param pdev: instance
+ * @retval None
+ */
+static void Handle_USBAsynchXfer (void *pdev)
+{
+ uint16_t USB_Tx_ptr;
+ uint16_t USB_Tx_length;
+
+ if(USB_Tx_State != 1)
+ {
+ if (APP_Rx_ptr_out == APP_RX_DATA_SIZE)
+ {
+ APP_Rx_ptr_out = 0;
+ }
+
+ if(APP_Rx_ptr_out == APP_Rx_ptr_in)
+ {
+ USB_Tx_State = 0;
+ return;
+ }
+
+ if(APP_Rx_ptr_out > APP_Rx_ptr_in) /* rollback */
+ {
+ APP_Rx_length = APP_RX_DATA_SIZE - APP_Rx_ptr_out;
+
+ }
+ else
+ {
+ APP_Rx_length = APP_Rx_ptr_in - APP_Rx_ptr_out;
+
+ }
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ APP_Rx_length &= ~0x03;
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+
+ if (APP_Rx_length > CDC_DATA_IN_PACKET_SIZE)
+ {
+ USB_Tx_ptr = APP_Rx_ptr_out;
+ USB_Tx_length = CDC_DATA_IN_PACKET_SIZE;
+
+ APP_Rx_ptr_out += CDC_DATA_IN_PACKET_SIZE;
+ APP_Rx_length -= CDC_DATA_IN_PACKET_SIZE;
+ }
+ else
+ {
+ USB_Tx_ptr = APP_Rx_ptr_out;
+ USB_Tx_length = APP_Rx_length;
+
+ APP_Rx_ptr_out += APP_Rx_length;
+ APP_Rx_length = 0;
+ }
+ USB_Tx_State = 1;
+
+ DCD_EP_Tx (pdev,
+ CDC_IN_EP,
+ (uint8_t*)&APP_Rx_Buffer[USB_Tx_ptr],
+ USB_Tx_length);
+ }
+
+}
+
+/**
+ * @brief USBD_cdc_GetCfgDesc
+ * Return configuration descriptor
+ * @param speed : current device speed
+ * @param length : pointer data length
+ * @retval pointer to descriptor buffer
+ */
+static uint8_t *USBD_cdc_GetCfgDesc (uint8_t speed, uint16_t *length)
+{
+ *length = sizeof (usbd_cdc_CfgDesc);
+ return usbd_cdc_CfgDesc;
+}
+
+/**
+ * @brief USBD_cdc_GetCfgDesc
+ * Return configuration descriptor
+ * @param speed : current device speed
+ * @param length : pointer data length
+ * @retval pointer to descriptor buffer
+ */
+#ifdef USE_USB_OTG_HS
+static uint8_t *USBD_cdc_GetOtherCfgDesc (uint8_t speed, uint16_t *length)
+{
+ *length = sizeof (usbd_cdc_OtherCfgDesc);
+ return usbd_cdc_OtherCfgDesc;
+}
+#endif
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
projects / fw / stlink / blobdiff