STM32_USB_Host_Library
Select one of the symbols to view example projects that use it.
 
Outline
Includes
#include "usbh_ctlreq.h"
USBH_Get_DevDesc(USBH_HandleTypeDef *, uint16_t)
USBH_Get_CfgDesc(USBH_HandleTypeDef *, uint16_t)
USBH_Get_StringDesc(USBH_HandleTypeDef *, uint8_t, uint8_t *, uint16_t)
USBH_GetDescriptor(USBH_HandleTypeDef *, uint8_t, uint16_t, uint8_t *, uint16_t)
USBH_SetAddress(USBH_HandleTypeDef *, uint8_t)
USBH_SetCfg(USBH_HandleTypeDef *, uint16_t)
USBH_SetInterface(USBH_HandleTypeDef *, uint8_t, uint8_t)
USBH_SetFeature(USBH_HandleTypeDef *, uint8_t)
USBH_ClrFeature(USBH_HandleTypeDef *, uint8_t)
USBH_ParseDevDesc(USBH_HandleTypeDef *, uint8_t *, uint16_t)
USBH_ParseCfgDesc(USBH_HandleTypeDef *, uint8_t *, uint16_t)
USBH_ParseInterfaceDesc(USBH_InterfaceDescTypeDef *, uint8_t *)
USBH_ParseEPDesc(USBH_HandleTypeDef *, USBH_EpDescTypeDef *, uint8_t *)
USBH_ParseStringDesc(uint8_t *, uint8_t *, uint16_t)
USBH_GetNextDesc(uint8_t *, uint16_t *)
USBH_CtlReq(USBH_HandleTypeDef *, uint8_t *, uint16_t)
USBH_HandleControl(USBH_HandleTypeDef *)
Files
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CodeScopeSTM32 Libraries and SamplesSTM32_USB_Host_LibraryCore/Src/usbh_ctlreq.c
 
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/** ****************************************************************************** * @file usbh_ctlreq.c * @author MCD Application Team * @brief This file implements the control requests for device enumeration ****************************************************************************** * @attention * * Copyright (c) 2015 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "usbh_ctlreq.h" /** @addtogroup USBH_LIB * @{ *//* ... */ /** @addtogroup USBH_LIB_CORE * @{ *//* ... */ /** @defgroup USBH_CTLREQ * @brief This file implements the standard requests for device enumeration * @{ *//* ... */ /** @defgroup USBH_CTLREQ_Private_Defines * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBH_CTLREQ_Private_TypesDefinitions * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBH_CTLREQ_Private_Macros * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBH_CTLREQ_Private_Variables * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBH_CTLREQ_Private_FunctionPrototypes * @{ *//* ... */ static USBH_StatusTypeDef USBH_HandleControl(USBH_HandleTypeDef *phost); static USBH_StatusTypeDef USBH_ParseDevDesc(USBH_HandleTypeDef *phost, uint8_t *buf, uint16_t length); static USBH_StatusTypeDef USBH_ParseCfgDesc(USBH_HandleTypeDef *phost, uint8_t *buf, uint16_t length); static USBH_StatusTypeDef USBH_ParseEPDesc(USBH_HandleTypeDef *phost, USBH_EpDescTypeDef *ep_descriptor, uint8_t *buf); static void USBH_ParseStringDesc(uint8_t *psrc, uint8_t *pdest, uint16_t length); static void USBH_ParseInterfaceDesc(USBH_InterfaceDescTypeDef *if_descriptor, uint8_t *buf); /** * @} *//* ... */ /** @defgroup USBH_CTLREQ_Private_Functions * @{ *//* ... */ /** * @brief USBH_Get_DevDesc * Issue Get Device Descriptor command to the device. Once the response * received, it parses the device descriptor and updates the status. * @param phost: Host Handle * @param length: Length of the descriptor * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_Get_DevDesc(USBH_HandleTypeDef *phost, uint16_t length) { USBH_StatusTypeDef status; if (length > sizeof(phost->device.Data)) { USBH_ErrLog("Control error: Get Device Descriptor failed, data buffer size issue"); return USBH_NOT_SUPPORTED; }if (length > sizeof(phost->device.Data)) { ... } status = USBH_GetDescriptor(phost, USB_REQ_RECIPIENT_DEVICE | USB_REQ_TYPE_STANDARD, USB_DESC_DEVICE, phost->device.Data, length); if (status == USBH_OK) { /* Commands successfully sent and Response Received */ status = USBH_ParseDevDesc(phost, phost->device.Data, length); }if (status == USBH_OK) { ... } return status; }{ ... } /** * @brief USBH_Get_CfgDesc * Issues Configuration Descriptor to the device. Once the response * received, it parses the configuration descriptor and updates the * status. * @param phost: Host Handle * @param length: Length of the descriptor * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_Get_CfgDesc(USBH_HandleTypeDef *phost, uint16_t length) { USBH_StatusTypeDef status; uint8_t *pData = phost->device.CfgDesc_Raw; if (length > sizeof(phost->device.CfgDesc_Raw)) { USBH_ErrLog("Control error: Get configuration Descriptor failed, data buffer size issue"); return USBH_NOT_SUPPORTED; }if (length > sizeof(phost->device.CfgDesc_Raw)) { ... } status = USBH_GetDescriptor(phost, (USB_REQ_RECIPIENT_DEVICE | USB_REQ_TYPE_STANDARD), USB_DESC_CONFIGURATION, pData, length); if (status == USBH_OK) { /* Commands successfully sent and Response Received */ status = USBH_ParseCfgDesc(phost, pData, length); }if (status == USBH_OK) { ... } return status; }{ ... } /** * @brief USBH_Get_StringDesc * Issues string Descriptor command to the device. Once the response * received, it parses the string descriptor and updates the status. * @param phost: Host Handle * @param string_index: String index for the descriptor * @param buff: Buffer address for the descriptor * @param length: Length of the descriptor * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_Get_StringDesc(USBH_HandleTypeDef *phost, uint8_t string_index, uint8_t *buff, uint16_t length) { USBH_StatusTypeDef status; if ((length > sizeof(phost->device.Data)) || (buff == NULL)) { USBH_ErrLog("Control error: Get String Descriptor failed, data buffer size issue"); return USBH_NOT_SUPPORTED; }if ((length > sizeof(phost->device.Data)) || (buff == NULL)) { ... } status = USBH_GetDescriptor(phost, USB_REQ_RECIPIENT_DEVICE | USB_REQ_TYPE_STANDARD, USB_DESC_STRING | string_index, phost->device.Data, length); if (status == USBH_OK) { /* Commands successfully sent and Response Received */ USBH_ParseStringDesc(phost->device.Data, buff, length); }if (status == USBH_OK) { ... } return status; }{ ... } /** * @brief USBH_GetDescriptor * Issues Descriptor command to the device. Once the response received, * it parses the descriptor and updates the status. * @param phost: Host Handle * @param req_type: Descriptor type * @param value_idx: Value for the GetDescriptr request * @param buff: Buffer to store the descriptor * @param length: Length of the descriptor * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_GetDescriptor(USBH_HandleTypeDef *phost, uint8_t req_type, uint16_t value_idx, uint8_t *buff, uint16_t length) { if (phost->RequestState == CMD_SEND) { phost->Control.setup.b.bmRequestType = USB_D2H | req_type; phost->Control.setup.b.bRequest = USB_REQ_GET_DESCRIPTOR; phost->Control.setup.b.wValue.w = value_idx; if ((value_idx & 0xff00U) == USB_DESC_STRING) { phost->Control.setup.b.wIndex.w = 0x0409U; }if ((value_idx & 0xff00U) == USB_DESC_STRING) { ... } else { phost->Control.setup.b.wIndex.w = 0U; }else { ... } phost->Control.setup.b.wLength.w = length; }if (phost->RequestState == CMD_SEND) { ... } return USBH_CtlReq(phost, buff, length); }{ ... } /** * @brief USBH_SetAddress * This command sets the address to the connected device * @param phost: Host Handle * @param DeviceAddress: Device address to assign * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_SetAddress(USBH_HandleTypeDef *phost, uint8_t DeviceAddress) { if (phost->RequestState == CMD_SEND) { phost->Control.setup.b.bmRequestType = USB_H2D | USB_REQ_RECIPIENT_DEVICE | \ USB_REQ_TYPE_STANDARD; phost->Control.setup.b.bRequest = USB_REQ_SET_ADDRESS; phost->Control.setup.b.wValue.w = (uint16_t)DeviceAddress; phost->Control.setup.b.wIndex.w = 0U; phost->Control.setup.b.wLength.w = 0U; }if (phost->RequestState == CMD_SEND) { ... } return USBH_CtlReq(phost, NULL, 0U); }{ ... } /** * @brief USBH_SetCfg * The command sets the configuration value to the connected device * @param phost: Host Handle * @param cfg_idx: Configuration value * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_SetCfg(USBH_HandleTypeDef *phost, uint16_t cfg_idx) { if (phost->RequestState == CMD_SEND) { phost->Control.setup.b.bmRequestType = USB_H2D | USB_REQ_RECIPIENT_DEVICE | USB_REQ_TYPE_STANDARD; phost->Control.setup.b.bRequest = USB_REQ_SET_CONFIGURATION; phost->Control.setup.b.wValue.w = cfg_idx; phost->Control.setup.b.wIndex.w = 0U; phost->Control.setup.b.wLength.w = 0U; }if (phost->RequestState == CMD_SEND) { ... } return USBH_CtlReq(phost, NULL, 0U); }{ ... } /** * @brief USBH_SetInterface * The command sets the Interface value to the connected device * @param phost: Host Handle * @param altSetting: Interface value * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_SetInterface(USBH_HandleTypeDef *phost, uint8_t ep_num, uint8_t altSetting) { if (phost->RequestState == CMD_SEND) { phost->Control.setup.b.bmRequestType = USB_H2D | USB_REQ_RECIPIENT_INTERFACE | USB_REQ_TYPE_STANDARD; phost->Control.setup.b.bRequest = USB_REQ_SET_INTERFACE; phost->Control.setup.b.wValue.w = altSetting; phost->Control.setup.b.wIndex.w = ep_num; phost->Control.setup.b.wLength.w = 0U; }if (phost->RequestState == CMD_SEND) { ... } return USBH_CtlReq(phost, NULL, 0U); }{ ... } /** * @brief USBH_SetFeature * The command sets the device features (remote wakeup feature,..) * @param pdev: Selected device * @param itf_idx * @retval Status *//* ... */ USBH_StatusTypeDef USBH_SetFeature(USBH_HandleTypeDef *phost, uint8_t wValue) { if (phost->RequestState == CMD_SEND) { phost->Control.setup.b.bmRequestType = USB_H2D | USB_REQ_RECIPIENT_DEVICE | USB_REQ_TYPE_STANDARD; phost->Control.setup.b.bRequest = USB_REQ_SET_FEATURE; phost->Control.setup.b.wValue.w = wValue; phost->Control.setup.b.wIndex.w = 0U; phost->Control.setup.b.wLength.w = 0U; }if (phost->RequestState == CMD_SEND) { ... } return USBH_CtlReq(phost, NULL, 0U); }{ ... } /** * @brief USBH_ClrFeature * This request is used to clear or disable a specific feature. * @param phost: Host Handle * @param ep_num: endpoint number * @param hc_num: Host channel number * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_ClrFeature(USBH_HandleTypeDef *phost, uint8_t ep_num) { if (phost->RequestState == CMD_SEND) { phost->Control.setup.b.bmRequestType = USB_H2D | USB_REQ_RECIPIENT_ENDPOINT | USB_REQ_TYPE_STANDARD; phost->Control.setup.b.bRequest = USB_REQ_CLEAR_FEATURE; phost->Control.setup.b.wValue.w = FEATURE_SELECTOR_ENDPOINT; phost->Control.setup.b.wIndex.w = ep_num; phost->Control.setup.b.wLength.w = 0U; }if (phost->RequestState == CMD_SEND) { ... } return USBH_CtlReq(phost, NULL, 0U); }{ ... } /** * @brief USBH_ParseDevDesc * This function Parses the device descriptor * @param phost: Host Handle * @param dev_desc: device_descriptor destination address * @param buf: Buffer where the source descriptor is available * @param length: Length of the descriptor * @retval USBH status *//* ... */ static USBH_StatusTypeDef USBH_ParseDevDesc(USBH_HandleTypeDef *phost, uint8_t *buf, uint16_t length) { USBH_DevDescTypeDef *dev_desc = &phost->device.DevDesc; USBH_StatusTypeDef status = USBH_OK; if (buf == NULL) { return USBH_FAIL; }if (buf == NULL) { ... } dev_desc->bLength = *(uint8_t *)(buf + 0U); dev_desc->bDescriptorType = *(uint8_t *)(buf + 1U); dev_desc->bcdUSB = LE16(buf + 2U); dev_desc->bDeviceClass = *(uint8_t *)(buf + 4U); dev_desc->bDeviceSubClass = *(uint8_t *)(buf + 5U); dev_desc->bDeviceProtocol = *(uint8_t *)(buf + 6U); dev_desc->bMaxPacketSize = *(uint8_t *)(buf + 7U); if ((phost->device.speed == (uint8_t)USBH_SPEED_HIGH) || (phost->device.speed == (uint8_t)USBH_SPEED_FULL)) { /* Make sure that the max packet size is either 8, 16, 32, 64 or force it to minimum allowed value */ switch (dev_desc->bMaxPacketSize) { case 8: case 16: case 32: case 64: break; case 64: default: /* set the size to min allowed value in case the device has answered with incorrect size */ dev_desc->bMaxPacketSize = 8U; break;default }switch (dev_desc->bMaxPacketSize) { ... } }if ((phost->device.speed == (uint8_t)USBH_SPEED_HIGH) || (phost->device.speed == (uint8_t)USBH_SPEED_FULL)) { ... } else if (phost->device.speed == (uint8_t)USBH_SPEED_LOW) { if (dev_desc->bMaxPacketSize != 8U) { /* set the size to 8 in case the device has answered with incorrect size */ dev_desc->bMaxPacketSize = 8U; }if (dev_desc->bMaxPacketSize != 8U) { ... } }else if (phost->device.speed == (uint8_t)USBH_SPEED_LOW) { ... } else { status = USBH_NOT_SUPPORTED; }else { ... } if (length > 8U) { /* For 1st time after device connection, Host may issue only 8 bytes for Device Descriptor Length *//* ... */ dev_desc->idVendor = LE16(buf + 8U); dev_desc->idProduct = LE16(buf + 10U); dev_desc->bcdDevice = LE16(buf + 12U); dev_desc->iManufacturer = *(uint8_t *)(buf + 14U); dev_desc->iProduct = *(uint8_t *)(buf + 15U); dev_desc->iSerialNumber = *(uint8_t *)(buf + 16U); dev_desc->bNumConfigurations = *(uint8_t *)(buf + 17U); }if (length > 8U) { ... } return status; }{ ... } /** * @brief USBH_ParseCfgDesc * This function Parses the configuration descriptor * @param phost: USB Host handler * @param buf: Buffer where the source descriptor is available * @param length: Length of the descriptor * @retval USBH status *//* ... */ static USBH_StatusTypeDef USBH_ParseCfgDesc(USBH_HandleTypeDef *phost, uint8_t *buf, uint16_t length) { USBH_CfgDescTypeDef *cfg_desc = &phost->device.CfgDesc; USBH_StatusTypeDef status = USBH_OK; USBH_InterfaceDescTypeDef *pif; USBH_EpDescTypeDef *pep; USBH_DescHeader_t *pdesc; uint16_t ptr; uint8_t if_ix = 0U; uint8_t ep_ix = 0U; if (buf == NULL) { return USBH_FAIL; }if (buf == NULL) { ... } pdesc = (USBH_DescHeader_t *)(void *)buf; /* Parse configuration descriptor */ cfg_desc->bLength = *(uint8_t *)(buf + 0U); cfg_desc->bDescriptorType = *(uint8_t *)(buf + 1U); cfg_desc->wTotalLength = MIN(((uint16_t) LE16(buf + 2U)), ((uint16_t)USBH_MAX_SIZE_CONFIGURATION)); cfg_desc->bNumInterfaces = *(uint8_t *)(buf + 4U); cfg_desc->bConfigurationValue = *(uint8_t *)(buf + 5U); cfg_desc->iConfiguration = *(uint8_t *)(buf + 6U); cfg_desc->bmAttributes = *(uint8_t *)(buf + 7U); cfg_desc->bMaxPower = *(uint8_t *)(buf + 8U); /* Make sure that the Configuration descriptor's bLength is equal to USB_CONFIGURATION_DESC_SIZE */ if (cfg_desc->bLength != USB_CONFIGURATION_DESC_SIZE) { cfg_desc->bLength = USB_CONFIGURATION_DESC_SIZE; }if (cfg_desc->bLength != USB_CONFIGURATION_DESC_SIZE) { ... } if (length > USB_CONFIGURATION_DESC_SIZE) { ptr = USB_LEN_CFG_DESC; pif = (USBH_InterfaceDescTypeDef *)NULL; while ((if_ix < USBH_MAX_NUM_INTERFACES) && (ptr < cfg_desc->wTotalLength)) { pdesc = USBH_GetNextDesc((uint8_t *)(void *)pdesc, &ptr); if (pdesc->bDescriptorType == USB_DESC_TYPE_INTERFACE) { /* Make sure that the interface descriptor's bLength is equal to USB_INTERFACE_DESC_SIZE */ if (pdesc->bLength != USB_INTERFACE_DESC_SIZE) { pdesc->bLength = USB_INTERFACE_DESC_SIZE; }if (pdesc->bLength != USB_INTERFACE_DESC_SIZE) { ... } pif = &cfg_desc->Itf_Desc[if_ix]; USBH_ParseInterfaceDesc(pif, (uint8_t *)(void *)pdesc); ep_ix = 0U; pep = (USBH_EpDescTypeDef *)NULL; while ((ep_ix < pif->bNumEndpoints) && (ptr < cfg_desc->wTotalLength)) { pdesc = USBH_GetNextDesc((uint8_t *)(void *)pdesc, &ptr); if (pdesc->bDescriptorType == USB_DESC_TYPE_ENDPOINT) { /* Check if the endpoint is appartening to an audio streaming interface */ if ((pif->bInterfaceClass == 0x01U) && ((pif->bInterfaceSubClass == 0x02U) || (pif->bInterfaceSubClass == 0x03U))) { /* Check if it is supporting the USB AUDIO 01 class specification */ if ((pif->bInterfaceProtocol == 0x00U) && (pdesc->bLength != 0x09U)) { pdesc->bLength = 0x09U; }if ((pif->bInterfaceProtocol == 0x00U) && (pdesc->bLength != 0x09U)) { ... } }if ((pif->bInterfaceClass == 0x01U) && ((pif->bInterfaceSubClass == 0x02U) || (pif->bInterfaceSubClass == 0x03U))) { ... } /* Make sure that the endpoint descriptor's bLength is equal to USB_ENDPOINT_DESC_SIZE for all other endpoints types *//* ... */ else { pdesc->bLength = USB_ENDPOINT_DESC_SIZE; }else { ... } pep = &cfg_desc->Itf_Desc[if_ix].Ep_Desc[ep_ix]; status = USBH_ParseEPDesc(phost, pep, (uint8_t *)(void *)pdesc); ep_ix++; }if (pdesc->bDescriptorType == USB_DESC_TYPE_ENDPOINT) { ... } }while ((ep_ix < pif->bNumEndpoints) && (ptr < cfg_desc->wTotalLength)) { ... } /* Check if the required endpoint(s) data are parsed */ if (ep_ix < pif->bNumEndpoints) { return USBH_NOT_SUPPORTED; }if (ep_ix < pif->bNumEndpoints) { ... } if_ix++; }if (pdesc->bDescriptorType == USB_DESC_TYPE_INTERFACE) { ... } }while ((if_ix < USBH_MAX_NUM_INTERFACES) && (ptr < cfg_desc->wTotalLength)) { ... } /* Check if the required interface(s) data are parsed */ if (if_ix < MIN(cfg_desc->bNumInterfaces, (uint8_t)USBH_MAX_NUM_INTERFACES)) { return USBH_NOT_SUPPORTED; }if (if_ix < MIN(cfg_desc->bNumInterfaces, (uint8_t)USBH_MAX_NUM_INTERFACES)) { ... } }if (length > USB_CONFIGURATION_DESC_SIZE) { ... } return status; }{ ... } /** * @brief USBH_ParseInterfaceDesc * This function Parses the interface descriptor * @param if_descriptor : Interface descriptor destination * @param buf: Buffer where the descriptor data is available * @retval None *//* ... */ static void USBH_ParseInterfaceDesc(USBH_InterfaceDescTypeDef *if_descriptor, uint8_t *buf) { if_descriptor->bLength = *(uint8_t *)(buf + 0U); if_descriptor->bDescriptorType = *(uint8_t *)(buf + 1U); if_descriptor->bInterfaceNumber = *(uint8_t *)(buf + 2U); if_descriptor->bAlternateSetting = *(uint8_t *)(buf + 3U); if_descriptor->bNumEndpoints = MIN(*(uint8_t *)(buf + 4U), USBH_MAX_NUM_ENDPOINTS); if_descriptor->bInterfaceClass = *(uint8_t *)(buf + 5U); if_descriptor->bInterfaceSubClass = *(uint8_t *)(buf + 6U); if_descriptor->bInterfaceProtocol = *(uint8_t *)(buf + 7U); if_descriptor->iInterface = *(uint8_t *)(buf + 8U); }{ ... } /** * @brief USBH_ParseEPDesc * This function Parses the endpoint descriptor * @param phost: USB Host handler * @param ep_descriptor: Endpoint descriptor destination address * @param buf: Buffer where the parsed descriptor stored * @retval USBH Status *//* ... */ static USBH_StatusTypeDef USBH_ParseEPDesc(USBH_HandleTypeDef *phost, USBH_EpDescTypeDef *ep_descriptor, uint8_t *buf) { USBH_StatusTypeDef status = USBH_OK; ep_descriptor->bLength = *(uint8_t *)(buf + 0U); ep_descriptor->bDescriptorType = *(uint8_t *)(buf + 1U); ep_descriptor->bEndpointAddress = *(uint8_t *)(buf + 2U); ep_descriptor->bmAttributes = *(uint8_t *)(buf + 3U); ep_descriptor->wMaxPacketSize = LE16(buf + 4U); ep_descriptor->bInterval = *(uint8_t *)(buf + 6U); /* Make sure that wMaxPacketSize is different from 0 */ if ((ep_descriptor->wMaxPacketSize == 0x00U) || (ep_descriptor->wMaxPacketSize > USBH_MAX_EP_PACKET_SIZE) || (ep_descriptor->wMaxPacketSize > USBH_MAX_DATA_BUFFER)) { status = USBH_NOT_SUPPORTED; }if ((ep_descriptor->wMaxPacketSize == 0x00U) || (ep_descriptor->wMaxPacketSize > USBH_MAX_EP_PACKET_SIZE) || (ep_descriptor->wMaxPacketSize > USBH_MAX_DATA_BUFFER)) { ... } if (phost->device.speed == (uint8_t)USBH_SPEED_HIGH) { if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_BULK) { if (ep_descriptor->wMaxPacketSize > 512U) { status = USBH_NOT_SUPPORTED; }if (ep_descriptor->wMaxPacketSize > 512U) { ... } }if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_BULK) { ... } else if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_CTRL) { if (ep_descriptor->wMaxPacketSize > 64U) { status = USBH_NOT_SUPPORTED; }if (ep_descriptor->wMaxPacketSize > 64U) { ... } }else if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_CTRL) { ... } /* For high-speed interrupt/isochronous endpoints, bInterval can vary from 1 to 16 */ else if (((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_ISOC) || ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_INTR)) { if ((ep_descriptor->bInterval == 0U) || (ep_descriptor->bInterval > 0x10U)) { status = USBH_NOT_SUPPORTED; }if ((ep_descriptor->bInterval == 0U) || (ep_descriptor->bInterval > 0x10U)) { ... } }else if (((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_ISOC) || ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_INTR)) { ... } else { status = USBH_NOT_SUPPORTED; }else { ... } }if (phost->device.speed == (uint8_t)USBH_SPEED_HIGH) { ... } else if (phost->device.speed == (uint8_t)USBH_SPEED_FULL) { if (((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_BULK) || ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_CTRL)) { if (ep_descriptor->wMaxPacketSize > 64U) { status = USBH_NOT_SUPPORTED; }if (ep_descriptor->wMaxPacketSize > 64U) { ... } }if (((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_BULK) || ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_CTRL)) { ... } /* For full-speed isochronous endpoints, the value of bInterval must be in the range from 1 to 16.*/ else if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_ISOC) { if ((ep_descriptor->bInterval == 0U) || (ep_descriptor->bInterval > 0x10U) || (ep_descriptor->wMaxPacketSize > 64U)) { status = USBH_NOT_SUPPORTED; }if ((ep_descriptor->bInterval == 0U) || (ep_descriptor->bInterval > 0x10U) || (ep_descriptor->wMaxPacketSize > 64U)) { ... } }else if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_ISOC) { ... } /* For full-speed interrupt endpoints, the value of bInterval may be from 1 to 255.*/ else if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_INTR) { if ((ep_descriptor->bInterval == 0U) || (ep_descriptor->wMaxPacketSize > 1023U)) { status = USBH_NOT_SUPPORTED; }if ((ep_descriptor->bInterval == 0U) || (ep_descriptor->wMaxPacketSize > 1023U)) { ... } }else if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_INTR) { ... } else { status = USBH_NOT_SUPPORTED; }else { ... } }else if (phost->device.speed == (uint8_t)USBH_SPEED_FULL) { ... } else if (phost->device.speed == (uint8_t)USBH_SPEED_LOW) { if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_CTRL) { if (ep_descriptor->wMaxPacketSize != 8U) { status = USBH_NOT_SUPPORTED; }if (ep_descriptor->wMaxPacketSize != 8U) { ... } }if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_CTRL) { ... } /* For low-speed interrupt endpoints, the value of bInterval may be from 1 to 255.*/ else if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_INTR) { if ((ep_descriptor->bInterval == 0U) || (ep_descriptor->wMaxPacketSize > 8U)) { status = USBH_NOT_SUPPORTED; }if ((ep_descriptor->bInterval == 0U) || (ep_descriptor->wMaxPacketSize > 8U)) { ... } }else if ((ep_descriptor->bmAttributes & EP_TYPE_MSK) == EP_TYPE_INTR) { ... } else { status = USBH_NOT_SUPPORTED; }else { ... } }else if (phost->device.speed == (uint8_t)USBH_SPEED_LOW) { ... } else { status = USBH_NOT_SUPPORTED; }else { ... } return status; }{ ... } /** * @brief USBH_ParseStringDesc * This function Parses the string descriptor * @param psrc: Source pointer containing the descriptor data * @param pdest: Destination address pointer * @param length: Length of the descriptor * @retval None *//* ... */ static void USBH_ParseStringDesc(uint8_t *psrc, uint8_t *pdest, uint16_t length) { uint16_t strlength; uint16_t idx; /* The UNICODE string descriptor is not NULL-terminated. The string length is computed by subtracting two from the value of the first byte of the descriptor. *//* ... */ /* Check which is lower size, the Size of string or the length of bytes read from the device *//* ... */ if (psrc[1] == USB_DESC_TYPE_STRING) { /* Make sure the Descriptor is String Type */ /* psrc[0] contains Size of Descriptor, subtract 2 to get the length of string */ strlength = ((((uint16_t)psrc[0] - 2U) <= length) ? ((uint16_t)psrc[0] - 2U) : length); /* Adjust the offset ignoring the String Len and Descriptor type */ psrc += 2U; for (idx = 0U; idx < strlength; idx += 2U) { /* Copy Only the string and ignore the UNICODE ID, hence add the src */ *pdest = psrc[idx]; pdest++; }for (idx = 0U; idx < strlength; idx += 2U) { ... } *pdest = 0U; /* mark end of string */ }if (psrc[1] == USB_DESC_TYPE_STRING) { ... } }{ ... } /** * @brief USBH_GetNextDesc * This function return the next descriptor header * @param buf: Buffer where the cfg descriptor is available * @param ptr: data pointer inside the cfg descriptor * @retval next header *//* ... */ USBH_DescHeader_t *USBH_GetNextDesc(uint8_t *pbuf, uint16_t *ptr) { USBH_DescHeader_t *pnext; *ptr += ((USBH_DescHeader_t *)(void *)pbuf)->bLength; pnext = (USBH_DescHeader_t *)(void *)((uint8_t *)(void *)pbuf + \ ((USBH_DescHeader_t *)(void *)pbuf)->bLength); return (pnext); }{ ... } /** * @brief USBH_CtlReq * USBH_CtlReq sends a control request and provide the status after * completion of the request * @param phost: Host Handle * @param req: Setup Request Structure * @param buff: data buffer address to store the response * @param length: length of the response * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_CtlReq(USBH_HandleTypeDef *phost, uint8_t *buff, uint16_t length) { USBH_StatusTypeDef status; status = USBH_BUSY; switch (phost->RequestState) { case CMD_SEND: /* Start a SETUP transfer */ phost->Control.buff = buff; phost->Control.length = length; phost->Control.state = CTRL_SETUP; phost->RequestState = CMD_WAIT; status = USBH_BUSY; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif break; case CMD_SEND: case CMD_WAIT: status = USBH_HandleControl(phost); if ((status == USBH_OK) || (status == USBH_NOT_SUPPORTED)) { /* Transaction completed, move control state to idle */ phost->RequestState = CMD_SEND; phost->Control.state = CTRL_IDLE; }if ((status == USBH_OK) || (status == USBH_NOT_SUPPORTED)) { ... } else if (status == USBH_FAIL) { /* Failure Mode */ phost->RequestState = CMD_SEND; }else if (status == USBH_FAIL) { ... } else { /* .. */ }else { ... } #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif break; case CMD_WAIT: default: break;default }switch (phost->RequestState) { ... } return status; }{ ... } /** * @brief USBH_HandleControl * Handles the USB control transfer state machine * @param phost: Host Handle * @retval USBH Status *//* ... */ static USBH_StatusTypeDef USBH_HandleControl(USBH_HandleTypeDef *phost) { uint8_t direction; USBH_StatusTypeDef status = USBH_BUSY; USBH_URBStateTypeDef URB_Status = USBH_URB_IDLE; switch (phost->Control.state) { case CTRL_SETUP: /* send a SETUP packet */ (void)USBH_CtlSendSetup(phost, (uint8_t *)(void *)phost->Control.setup.d8, phost->Control.pipe_out); phost->Control.state = CTRL_SETUP_WAIT; break; case CTRL_SETUP: case CTRL_SETUP_WAIT: URB_Status = USBH_LL_GetURBState(phost, phost->Control.pipe_out); /* case SETUP packet sent successfully */ if (URB_Status == USBH_URB_DONE) { direction = (phost->Control.setup.b.bmRequestType & USB_REQ_DIR_MASK); /* check if there is a data stage */ if (phost->Control.setup.b.wLength.w != 0U) { if (direction == USB_D2H) { /* Data Direction is IN */ phost->Control.state = CTRL_DATA_IN; }if (direction == USB_D2H) { ... } else { /* Data Direction is OUT */ phost->Control.state = CTRL_DATA_OUT; }else { ... } }if (phost->Control.setup.b.wLength.w != 0U) { ... } /* No DATA stage */ else { /* If there is No Data Transfer Stage */ if (direction == USB_D2H) { /* Data Direction is IN */ phost->Control.state = CTRL_STATUS_OUT; }if (direction == USB_D2H) { ... } else { /* Data Direction is OUT */ phost->Control.state = CTRL_STATUS_IN; }else { ... } }else { ... } #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_DONE) { ... } else { if ((URB_Status == USBH_URB_ERROR) || (URB_Status == USBH_URB_NOTREADY)) { phost->Control.state = CTRL_ERROR; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if ((URB_Status == USBH_URB_ERROR) || (URB_Status == USBH_URB_NOTREADY)) { ... } }else { ... } break; case CTRL_SETUP_WAIT: case CTRL_DATA_IN: /* Issue an IN token */ phost->Control.timer = (uint16_t)phost->Timer; (void)USBH_CtlReceiveData(phost, phost->Control.buff, phost->Control.length, phost->Control.pipe_in); phost->Control.state = CTRL_DATA_IN_WAIT; break; case CTRL_DATA_IN: case CTRL_DATA_IN_WAIT: URB_Status = USBH_LL_GetURBState(phost, phost->Control.pipe_in); /* check is DATA packet transferred successfully */ if (URB_Status == USBH_URB_DONE) { phost->Control.state = CTRL_STATUS_OUT; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_DONE) { ... } /* manage error cases*/ if (URB_Status == USBH_URB_STALL) { /* In stall case, return to previous machine state*/ status = USBH_NOT_SUPPORTED; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_STALL) { ... } else { if (URB_Status == USBH_URB_ERROR) { /* Device error */ phost->Control.state = CTRL_ERROR; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_ERROR) { ... } }else { ... } break; case CTRL_DATA_IN_WAIT: case CTRL_DATA_OUT: (void)USBH_CtlSendData(phost, phost->Control.buff, phost->Control.length, phost->Control.pipe_out, 1U); phost->Control.timer = (uint16_t)phost->Timer; phost->Control.state = CTRL_DATA_OUT_WAIT; break; case CTRL_DATA_OUT: case CTRL_DATA_OUT_WAIT: URB_Status = USBH_LL_GetURBState(phost, phost->Control.pipe_out); if (URB_Status == USBH_URB_DONE) { /* If the Setup Pkt is sent successful, then change the state */ phost->Control.state = CTRL_STATUS_IN; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_DONE) { ... } /* handle error cases */ else if (URB_Status == USBH_URB_STALL) { /* In stall case, return to previous machine state*/ phost->Control.state = CTRL_STALLED; status = USBH_NOT_SUPPORTED; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }else if (URB_Status == USBH_URB_STALL) { ... } else if (URB_Status == USBH_URB_NOTREADY) { /* Nack received from device */ phost->Control.state = CTRL_DATA_OUT; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }else if (URB_Status == USBH_URB_NOTREADY) { ... } else { if (URB_Status == USBH_URB_ERROR) { /* device error */ phost->Control.state = CTRL_ERROR; status = USBH_FAIL; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_ERROR) { ... } }else { ... } break; case CTRL_DATA_OUT_WAIT: case CTRL_STATUS_IN: /* Send 0 bytes out packet */ (void)USBH_CtlReceiveData(phost, NULL, 0U, phost->Control.pipe_in); phost->Control.timer = (uint16_t)phost->Timer; phost->Control.state = CTRL_STATUS_IN_WAIT; break; case CTRL_STATUS_IN: case CTRL_STATUS_IN_WAIT: URB_Status = USBH_LL_GetURBState(phost, phost->Control.pipe_in); if (URB_Status == USBH_URB_DONE) { /* Control transfers completed, Exit the State Machine */ phost->Control.state = CTRL_COMPLETE; status = USBH_OK; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_DONE) { ... } else if (URB_Status == USBH_URB_ERROR) { phost->Control.state = CTRL_ERROR; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }else if (URB_Status == USBH_URB_ERROR) { ... } else { if (URB_Status == USBH_URB_STALL) { /* Control transfers completed, Exit the State Machine */ status = USBH_NOT_SUPPORTED; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_STALL) { ... } }else { ... } break; case CTRL_STATUS_IN_WAIT: case CTRL_STATUS_OUT: (void)USBH_CtlSendData(phost, NULL, 0U, phost->Control.pipe_out, 1U); phost->Control.timer = (uint16_t)phost->Timer; phost->Control.state = CTRL_STATUS_OUT_WAIT; break; case CTRL_STATUS_OUT: case CTRL_STATUS_OUT_WAIT: URB_Status = USBH_LL_GetURBState(phost, phost->Control.pipe_out); if (URB_Status == USBH_URB_DONE) { status = USBH_OK; phost->Control.state = CTRL_COMPLETE; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_DONE) { ... } else if (URB_Status == USBH_URB_NOTREADY) { phost->Control.state = CTRL_STATUS_OUT; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }else if (URB_Status == USBH_URB_NOTREADY) { ... } else { if (URB_Status == USBH_URB_ERROR) { phost->Control.state = CTRL_ERROR; #if (USBH_USE_OS == 1U) phost->os_msg = (uint32_t)USBH_CONTROL_EVENT; #if (osCMSIS < 0x20000U) (void)osMessagePut(phost->os_event, phost->os_msg, 0U); #else (void)osMessageQueuePut(phost->os_event, &phost->os_msg, 0U, 0U); #endif/* ... */ #endif }if (URB_Status == USBH_URB_ERROR) { ... } }else { ... } break; case CTRL_STATUS_OUT_WAIT: case CTRL_ERROR: /* After a halt condition is encountered or an error is detected by the host, a control endpoint is allowed to recover by accepting the next Setup PID; i.e., recovery actions via some other pipe are not required for control endpoints. For the Default Control Pipe, a device reset will ultimately be required to clear the halt or error condition if the next Setup PID is not accepted. *//* ... */ if (++phost->Control.errorcount <= USBH_MAX_ERROR_COUNT) { /* Do the transmission again, starting from SETUP Packet */ phost->Control.state = CTRL_SETUP; phost->RequestState = CMD_SEND; }if (++phost->Control.errorcount <= USBH_MAX_ERROR_COUNT) { ... } else { phost->pUser(phost, HOST_USER_UNRECOVERED_ERROR); phost->Control.errorcount = 0U; USBH_ErrLog("Control error: Device not responding"); /* Free control pipes */ (void)USBH_FreePipe(phost, phost->Control.pipe_out); (void)USBH_FreePipe(phost, phost->Control.pipe_in); phost->gState = HOST_IDLE; status = USBH_FAIL; }else { ... } break; case CTRL_ERROR: default: break;default }switch (phost->Control.state) { ... } return status; }{ ... } /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */ Includes