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/**
******************************************************************************
* @file usbh_core.c
* @author MCD Application Team
* @version V3.2.1
* @date 26-June-2015
* @brief This file implements the functions for the core state machine process
* the enumeration and the control transfer process
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*
* Modifications by Robert Fisk
*/
/* Includes ------------------------------------------------------------------*/
#include "usbh_core.h"
/** @addtogroup USBH_LIB
* @{
*/
/** @addtogroup USBH_LIB_CORE
* @{
*/
/** @defgroup USBH_CORE
* @brief This file handles the basic enumeration when a device is connected
* to the host.
* @{
*/
/** @defgroup USBH_CORE_Private_Defines
* @{
*/
#define USBH_ADDRESS_DEFAULT 0
#define USBH_ADDRESS_ASSIGNED 1
#define USBH_MPS_DEFAULT 0x40
#define USBH_ATTACH_DELAY_MS 200
#define USBH_DETACH_DELAY_MS 500
/**
* @}
*/
/** @defgroup USBH_CORE_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup USBH_CORE_Private_Variables
* @{
*/
/**
* @}
*/
/** @defgroup USBH_CORE_Private_Functions
* @{
*/
static USBH_StatusTypeDef USBH_HandleEnum (USBH_HandleTypeDef *phost);
static void USBH_HandleSof (USBH_HandleTypeDef *phost);
static USBH_StatusTypeDef DeInitStateMachine(USBH_HandleTypeDef *phost);
#if (USBH_USE_OS == 1)
static void USBH_Process_OS(void const * argument);
#endif
/**
* @brief HCD_Init
* Initialize the HOST Core.
* @param phost: Host Handle
* @param pUsrFunc: User Callback
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_Init(USBH_HandleTypeDef *phost, void (*pUsrFunc)(USBH_HandleTypeDef *phost, uint8_t ), uint8_t id)
{
/* Check whether the USB Host handle is valid */
if(phost == NULL)
{
USBH_ErrLog("Invalid Host handle");
return USBH_FAIL;
}
/* Set DRiver ID */
phost->id = id;
/* Unlink class*/
phost->pActiveClass = NULL;
phost->ClassNumber = 0;
/* Restore default states and prepare EP0 */
DeInitStateMachine(phost);
/* Assign User process */
if(pUsrFunc != NULL)
{
phost->pUser = pUsrFunc;
}
#if (USBH_USE_OS == 1)
/* Create USB Host Queue */
osMessageQDef(USBH_Queue, 10, uint16_t);
phost->os_event = osMessageCreate (osMessageQ(USBH_Queue), NULL);
/*Create USB Host Task */
#if defined (USBH_PROCESS_STACK_SIZE)
osThreadDef(USBH_Thread, USBH_Process_OS, USBH_PROCESS_PRIO, 0, USBH_PROCESS_STACK_SIZE);
#else
osThreadDef(USBH_Thread, USBH_Process_OS, USBH_PROCESS_PRIO, 0, 8 * configMINIMAL_STACK_SIZE);
#endif
phost->thread = osThreadCreate (osThread(USBH_Thread), phost);
#endif
/* Initialize low level driver */
USBH_LL_Init(phost);
return USBH_OK;
}
/**
* @brief HCD_Init
* De-Initialize the Host portion of the driver.
* @param phost: Host Handle
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_DeInit(USBH_HandleTypeDef *phost)
{
DeInitStateMachine(phost);
if(phost->pData != NULL)
{
phost->pActiveClass->pData = NULL;
USBH_LL_Stop(phost);
}
USBH_LL_DeInit(phost);
return USBH_OK;
}
/**
* @brief DeInitStateMachine
* De-Initialize the Host state machine.
* @param phost: Host Handle
* @retval USBH Status
*/
static USBH_StatusTypeDef DeInitStateMachine(USBH_HandleTypeDef *phost)
{
uint32_t i = 0;
/* Clear Pipes flags*/
for ( ; i < USBH_MAX_PIPES_NBR; i++)
{
phost->Pipes[i] = 0;
}
for(i = 0; i< USBH_MAX_DATA_BUFFER; i++)
{
phost->device.Data[i] = 0;
}
phost->gState = HOST_IDLE;
phost->EnumState = ENUM_IDLE;
phost->RequestState = CMD_SEND;
phost->Timer = 0;
phost->Control.state = CTRL_SETUP;
phost->Control.pipe_size = USBH_MPS_DEFAULT;
phost->Control.errorcount = 0;
phost->device.address = USBH_ADDRESS_DEFAULT;
phost->device.speed = USBH_SPEED_FULL;
phost->device.is_connected = 0;
return USBH_OK;
}
/**
* @brief USBH_RegisterClass
* Link class driver to Host Core.
* @param phost : Host Handle
* @param pclass: Class handle
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_RegisterClass(USBH_HandleTypeDef *phost, USBH_ClassTypeDef *pclass)
{
USBH_StatusTypeDef status = USBH_OK;
if(pclass != 0)
{
if(phost->ClassNumber < USBH_MAX_NUM_SUPPORTED_CLASS)
{
/* link the class to the USB Host handle */
phost->pClass[phost->ClassNumber++] = pclass;
status = USBH_OK;
}
else
{
USBH_ErrLog("Max Class Number reached");
status = USBH_FAIL;
}
}
else
{
USBH_ErrLog("Invalid Class handle");
status = USBH_FAIL;
}
return status;
}
/**
* @brief USBH_SelectInterface
* Select current interface.
* @param phost: Host Handle
* @param interface: Interface number
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_SelectInterface(USBH_HandleTypeDef *phost, uint8_t interface)
{
USBH_StatusTypeDef status = USBH_OK;
if(interface < phost->device.CfgDesc.bNumInterfaces)
{
phost->device.current_interface = interface;
USBH_UsrLog ("Switching to Interface (#%d)", interface);
USBH_UsrLog ("Class : %xh", phost->device.CfgDesc.Itf_Desc[interface].bInterfaceClass );
USBH_UsrLog ("SubClass : %xh", phost->device.CfgDesc.Itf_Desc[interface].bInterfaceSubClass );
USBH_UsrLog ("Protocol : %xh", phost->device.CfgDesc.Itf_Desc[interface].bInterfaceProtocol );
}
else
{
USBH_ErrLog ("Cannot Select This Interface.");
status = USBH_FAIL;
}
return status;
}
/**
* @brief USBH_GetActiveClass
* Return Device Class.
* @param phost: Host Handle
* @param interface: Interface index
* @retval Class Code
*/
uint8_t USBH_GetActiveClass(USBH_HandleTypeDef *phost)
{
return (phost->device.CfgDesc.Itf_Desc[0].bInterfaceClass);
}
/**
* @brief USBH_FindInterface
* Find the interface index for a specific class.
* @param phost: Host Handle
* @param Class: Class code
* @param SubClass: SubClass code
* @param Protocol: Protocol code
* @retval interface index in the configuration structure
* @note : (1)interface index 0xFF means interface index not found
*/
uint8_t USBH_FindInterface(USBH_HandleTypeDef *phost, uint8_t Class, uint8_t SubClass, uint8_t Protocol)
{
USBH_InterfaceDescTypeDef *pif ;
USBH_CfgDescTypeDef *pcfg ;
int8_t if_ix = 0;
pif = (USBH_InterfaceDescTypeDef *)0;
pcfg = &phost->device.CfgDesc;
while (if_ix < USBH_MAX_NUM_INTERFACES)
{
pif = &pcfg->Itf_Desc[if_ix];
if(((pif->bInterfaceClass == Class) || (Class == 0xFF))&&
((pif->bInterfaceSubClass == SubClass) || (SubClass == 0xFF))&&
((pif->bInterfaceProtocol == Protocol) || (Protocol == 0xFF)))
{
return if_ix;
}
if_ix++;
}
return 0xFF;
}
/**
* @brief USBH_FindInterfaceIndex
* Find the interface index for a specific class interface and alternate setting number.
* @param phost: Host Handle
* @param interface_number: interface number
* @param alt_settings : alternate setting number
* @retval interface index in the configuration structure
* @note : (1)interface index 0xFF means interface index not found
*/
uint8_t USBH_FindInterfaceIndex(USBH_HandleTypeDef *phost, uint8_t interface_number, uint8_t alt_settings)
{
USBH_InterfaceDescTypeDef *pif ;
USBH_CfgDescTypeDef *pcfg ;
int8_t if_ix = 0;
pif = (USBH_InterfaceDescTypeDef *)0;
pcfg = &phost->device.CfgDesc;
while (if_ix < USBH_MAX_NUM_INTERFACES)
{
pif = &pcfg->Itf_Desc[if_ix];
if((pif->bInterfaceNumber == interface_number) && (pif->bAlternateSetting == alt_settings))
{
return if_ix;
}
if_ix++;
}
return 0xFF;
}
/**
* @brief USBH_Start
* Start the USB Host Core.
* @param phost: Host Handle
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_Start (USBH_HandleTypeDef *phost)
{
/* Start the low level driver */
USBH_LL_Start(phost);
/* Activate VBUS on the port */
USBH_LL_DriverVBUS (phost, TRUE);
return USBH_OK;
}
/**
* @brief USBH_Stop
* Stop the USB Host Core.
* @param phost: Host Handle
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_Stop (USBH_HandleTypeDef *phost)
{
/* Stop and cleanup the low level driver */
USBH_LL_Stop(phost);
/* DeActivate VBUS on the port */
USBH_LL_DriverVBUS (phost, FALSE);
/* FRee Control Pipes */
USBH_FreePipe (phost, phost->Control.pipe_in);
USBH_FreePipe (phost, phost->Control.pipe_out);
return USBH_OK;
}
/**
* @brief HCD_ReEnumerate
* Perform a new Enumeration phase.
* @param phost: Host Handle
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_ReEnumerate (USBH_HandleTypeDef *phost)
{
/*Stop Host */
USBH_Stop(phost);
/*Device has disconnected, so wait for 200 ms */
USBH_Delay(200);
/* Set State machines in default state */
DeInitStateMachine(phost);
/* Start again the host */
USBH_Start(phost);
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_PORT_EVENT, 0);
#endif
return USBH_OK;
}
/**
* @brief USBH_Process
* Background process of the USB Core.
* @param phost: Host Handle
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_Process(USBH_HandleTypeDef *phost)
{
__IO USBH_StatusTypeDef status = USBH_FAIL;
uint8_t idx = 0;
switch (phost->gState)
{
case HOST_IDLE:
if (phost->device.is_connected)
{
/* Wait for 200 ms after connection */
phost->gState = HOST_DEV_WAIT_FOR_ATTACHMENT;
USBH_Delay(USBH_ATTACH_DELAY_MS);
USBH_LL_ResetPort(phost);
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_PORT_EVENT, 0);
#endif
}
break;
case HOST_DEV_WAIT_FOR_ATTACHMENT:
break;
case HOST_DEV_ATTACHED :
USBH_UsrLog("USB Device Attached");
/* Wait for 100 ms after Reset */
USBH_Delay(100);
phost->device.speed = USBH_LL_GetSpeed(phost);
phost->gState = HOST_ENUMERATION;
phost->Control.pipe_out = USBH_AllocPipe (phost, 0x00);
phost->Control.pipe_in = USBH_AllocPipe (phost, 0x80);
/* Open Control pipes */
USBH_OpenPipe (phost,
phost->Control.pipe_in,
0x80,
phost->device.address,
phost->device.speed,
USBH_EP_CONTROL,
phost->Control.pipe_size);
/* Open Control pipes */
USBH_OpenPipe (phost,
phost->Control.pipe_out,
0x00,
phost->device.address,
phost->device.speed,
USBH_EP_CONTROL,
phost->Control.pipe_size);
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_PORT_EVENT, 0);
#endif
break;
case HOST_ENUMERATION:
/* Check for enumeration status */
if ( USBH_HandleEnum(phost) == USBH_OK)
{
/* The function shall return USBH_OK when full enumeration is complete */
USBH_UsrLog ("Enumeration done.");
phost->device.current_interface = 0;
if(phost->device.DevDesc.bNumConfigurations == 1)
{
USBH_UsrLog ("This device has only 1 configuration.");
phost->gState = HOST_SET_CONFIGURATION;
}
else
{
phost->gState = HOST_INPUT;
}
}
break;
case HOST_INPUT:
{
/* user callback for end of device basic enumeration */
if(phost->pUser != NULL)
{
phost->pUser(phost, HOST_USER_SELECT_CONFIGURATION);
phost->gState = HOST_SET_CONFIGURATION;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_STATE_CHANGED_EVENT, 0);
#endif
}
}
break;
case HOST_SET_CONFIGURATION:
/* set configuration */
if (USBH_SetCfg(phost, phost->device.CfgDesc.bConfigurationValue) == USBH_OK)
{
phost->gState = HOST_CHECK_CLASS;
USBH_UsrLog ("Default configuration set.");
}
break;
case HOST_CHECK_CLASS:
if(phost->ClassNumber == 0)
{
USBH_UsrLog ("No Class has been registered.");
}
else
{
phost->pActiveClass = NULL;
for (idx = 0; idx < USBH_MAX_NUM_SUPPORTED_CLASS ; idx ++)
{
if(phost->pClass[idx]->ClassCode == phost->device.CfgDesc.Itf_Desc[0].bInterfaceClass)
{
phost->pActiveClass = phost->pClass[idx];
}
}
if(phost->pActiveClass != NULL)
{
if(phost->pActiveClass->Init(phost)== USBH_OK)
{
phost->gState = HOST_CLASS_REQUEST;
USBH_UsrLog ("%s class started.", phost->pActiveClass->Name);
/* Inform user that a class has been activated */
phost->pUser(phost, HOST_USER_CLASS_SELECTED);
}
else
{
phost->pUser(phost, HOST_USER_CLASS_FAILED);
phost->gState = HOST_ABORT_STATE;
USBH_UsrLog ("Device not supporting %s class.", phost->pActiveClass->Name);
}
}
else
{
phost->pUser(phost, HOST_USER_CLASS_FAILED);
phost->gState = HOST_ABORT_STATE;
USBH_UsrLog ("No registered class for this device.");
}
}
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_STATE_CHANGED_EVENT, 0);
#endif
break;
case HOST_CLASS_REQUEST:
/* process class standard control requests state machine */
if(phost->pActiveClass != NULL)
{
status = phost->pActiveClass->Requests(phost);
if(status == USBH_OK)
{
phost->gState = HOST_CLASS;
}
}
else
{
phost->gState = HOST_ABORT_STATE;
USBH_ErrLog ("Invalid Class Driver.");
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_STATE_CHANGED_EVENT, 0);
#endif
}
break;
case HOST_CLASS:
/* process class state machine */
if(phost->pActiveClass != NULL)
{
phost->pActiveClass->BgndProcess(phost);
}
break;
case HOST_DEV_DISCONNECTED:
USBH_Delay(USBH_DETACH_DELAY_MS);
DeInitStateMachine(phost);
/* Re-Initilaize Host for new Enumeration */
if(phost->pActiveClass != NULL)
{
phost->pActiveClass->DeInit(phost);
phost->pActiveClass = NULL;
}
break;
case HOST_ABORT_STATE:
default :
break;
}
return USBH_OK;
}
/**
* @brief USBH_HandleEnum
* This function includes the complete enumeration process
* @param phost: Host Handle
* @retval USBH_Status
*/
static USBH_StatusTypeDef USBH_HandleEnum (USBH_HandleTypeDef *phost)
{
USBH_StatusTypeDef Status = USBH_BUSY;
switch (phost->EnumState)
{
case ENUM_IDLE:
/* Get Device Desc for only 1st 8 bytes : To get EP0 MaxPacketSize */
if ( USBH_Get_DevDesc(phost, 8) == USBH_OK)
{
phost->Control.pipe_size = phost->device.DevDesc.bMaxPacketSize;
phost->EnumState = ENUM_GET_FULL_DEV_DESC;
/* modify control channels configuration for MaxPacket size */
USBH_OpenPipe (phost,
phost->Control.pipe_in,
0x80,
phost->device.address,
phost->device.speed,
USBH_EP_CONTROL,
phost->Control.pipe_size);
/* Open Control pipes */
USBH_OpenPipe (phost,
phost->Control.pipe_out,
0x00,
phost->device.address,
phost->device.speed,
USBH_EP_CONTROL,
phost->Control.pipe_size);
}
break;
case ENUM_GET_FULL_DEV_DESC:
/* Get FULL Device Desc */
if ( USBH_Get_DevDesc(phost, USB_DEVICE_DESC_SIZE)== USBH_OK)
{
USBH_UsrLog("PID: %xh", phost->device.DevDesc.idProduct );
USBH_UsrLog("VID: %xh", phost->device.DevDesc.idVendor );
phost->EnumState = ENUM_SET_ADDR;
}
break;
case ENUM_SET_ADDR:
/* set address */
if ( USBH_SetAddress(phost, USBH_DEVICE_ADDRESS) == USBH_OK)
{
USBH_Delay(2);
phost->device.address = USBH_DEVICE_ADDRESS;
/* user callback for device address assigned */
USBH_UsrLog("Address (#%d) assigned.", phost->device.address);
phost->EnumState = ENUM_GET_CFG_DESC;
/* modify control channels to update device address */
USBH_OpenPipe (phost,
phost->Control.pipe_in,
0x80,
phost->device.address,
phost->device.speed,
USBH_EP_CONTROL,
phost->Control.pipe_size);
/* Open Control pipes */
USBH_OpenPipe (phost,
phost->Control.pipe_out,
0x00,
phost->device.address,
phost->device.speed,
USBH_EP_CONTROL,
phost->Control.pipe_size);
}
break;
case ENUM_GET_CFG_DESC:
/* get standard configuration descriptor */
if ( USBH_Get_CfgDesc(phost,
USB_CONFIGURATION_DESC_SIZE) == USBH_OK)
{
phost->EnumState = ENUM_GET_FULL_CFG_DESC;
}
break;
case ENUM_GET_FULL_CFG_DESC:
/* get FULL config descriptor (config, interface, endpoints) */
if (USBH_Get_CfgDesc(phost,
phost->device.CfgDesc.wTotalLength) == USBH_OK)
{
phost->EnumState = ENUM_GET_MFC_STRING_DESC;
}
break;
case ENUM_GET_MFC_STRING_DESC:
if (phost->device.DevDesc.iManufacturer != 0)
{ /* Check that Manufacturer String is available */
if ( USBH_Get_StringDesc(phost,
phost->device.DevDesc.iManufacturer,
phost->device.Data ,
0xff) == USBH_OK)
{
/* User callback for Manufacturing string */
USBH_UsrLog("Manufacturer : %s", (char *)phost->device.Data);
phost->EnumState = ENUM_GET_PRODUCT_STRING_DESC;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_STATE_CHANGED_EVENT, 0);
#endif
}
}
else
{
USBH_UsrLog("Manufacturer : N/A");
phost->EnumState = ENUM_GET_PRODUCT_STRING_DESC;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_STATE_CHANGED_EVENT, 0);
#endif
}
break;
case ENUM_GET_PRODUCT_STRING_DESC:
if (phost->device.DevDesc.iProduct != 0)
{ /* Check that Product string is available */
if ( USBH_Get_StringDesc(phost,
phost->device.DevDesc.iProduct,
phost->device.Data,
0xff) == USBH_OK)
{
/* User callback for Product string */
USBH_UsrLog("Product : %s", (char *)phost->device.Data);
phost->EnumState = ENUM_GET_SERIALNUM_STRING_DESC;
}
}
else
{
USBH_UsrLog("Product : N/A");
phost->EnumState = ENUM_GET_SERIALNUM_STRING_DESC;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_STATE_CHANGED_EVENT, 0);
#endif
}
break;
case ENUM_GET_SERIALNUM_STRING_DESC:
if (phost->device.DevDesc.iSerialNumber != 0)
{ /* Check that Serial number string is available */
if ( USBH_Get_StringDesc(phost,
phost->device.DevDesc.iSerialNumber,
phost->device.Data,
0xff) == USBH_OK)
{
/* User callback for Serial number string */
USBH_UsrLog("Serial Number : %s", (char *)phost->device.Data);
Status = USBH_OK;
}
}
else
{
USBH_UsrLog("Serial Number : N/A");
Status = USBH_OK;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_STATE_CHANGED_EVENT, 0);
#endif
}
break;
default:
break;
}
return Status;
}
/**
* @brief USBH_LL_SetTimer
* Set the initial Host Timer tick
* @param phost: Host Handle
* @retval None
*/
void USBH_LL_SetTimer (USBH_HandleTypeDef *phost, uint32_t time)
{
phost->Timer = time;
}
/**
* @brief USBH_LL_IncTimer
* Increment Host Timer tick
* @param phost: Host Handle
* @retval None
*/
void USBH_LL_IncTimer (USBH_HandleTypeDef *phost)
{
phost->Timer ++;
USBH_HandleSof(phost);
}
/**
* @brief USBH_HandleSof
* Call SOF process
* @param phost: Host Handle
* @retval None
*/
void USBH_HandleSof (USBH_HandleTypeDef *phost)
{
if((phost->gState == HOST_CLASS)&&(phost->pActiveClass != NULL))
{
phost->pActiveClass->SOFProcess(phost);
}
}
/**
* @brief USBH_LL_Connect
* Handle USB Host connexion event
* @param phost: Host Handle
* @retval USBH_Status
*/
USBH_StatusTypeDef USBH_LL_Connect (USBH_HandleTypeDef *phost)
{
if(phost->gState == HOST_IDLE )
{
phost->device.is_connected = 1;
if(phost->pUser != NULL)
{
phost->pUser(phost, HOST_USER_CONNECTION);
}
}
else if (phost->gState == HOST_DEV_WAIT_FOR_ATTACHMENT)
{
//On a cold boot with a low-speed device pre-attached,
//we get a second port-connected interrupt!???
//So go back and do the port reset again...
phost->gState = HOST_IDLE;
}
return USBH_OK;
}
USBH_StatusTypeDef USBH_LL_PortEnabled (USBH_HandleTypeDef *phost)
{
if(phost->gState == HOST_DEV_WAIT_FOR_ATTACHMENT )
{
phost->gState = HOST_DEV_ATTACHED ;
}
return USBH_OK;
}
/**
* @brief USBH_LL_Disconnect
* Handle USB Host disconnection event
* @param phost: Host Handle
* @retval USBH_Status
*/
USBH_StatusTypeDef USBH_LL_Disconnect (USBH_HandleTypeDef *phost)
{
//Ignore false disconnect interrupt that sometimes intrudes
//while we are waiting for the port to enable :(
if (phost->gState == HOST_DEV_WAIT_FOR_ATTACHMENT)
{
return USBH_FAIL;
}
/*Stop Host */
USBH_LL_Stop(phost);
/* FRee Control Pipes */
USBH_FreePipe (phost, phost->Control.pipe_in);
USBH_FreePipe (phost, phost->Control.pipe_out);
phost->device.is_connected = 0;
if(phost->pUser != NULL)
{
phost->pUser(phost, HOST_USER_DISCONNECTION);
}
USBH_UsrLog("USB Device disconnected");
/* Start the low level driver */
USBH_LL_Start(phost);
phost->gState = HOST_DEV_DISCONNECTED;
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_PORT_EVENT, 0);
#endif
return USBH_OK;
}
#if (USBH_USE_OS == 1)
/**
* @brief USB Host Thread task
* @param pvParameters not used
* @retval None
*/
static void USBH_Process_OS(void const * argument)
{
osEvent event;
for(;;)
{
event = osMessageGet(((USBH_HandleTypeDef *)argument)->os_event, osWaitForever );
if( event.status == osEventMessage )
{
USBH_Process((USBH_HandleTypeDef *)argument);
}
}
}
/**
* @brief USBH_LL_NotifyURBChange
* Notify URB state Change
* @param phost: Host handle
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_LL_NotifyURBChange (USBH_HandleTypeDef *phost)
{
osMessagePut ( phost->os_event, USBH_URB_EVENT, 0);
return USBH_OK;
}
#endif
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/