/**
* @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(200);
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->gState = HOST_ABORT_STATE;
USBH_UsrLog ("Device not supporting %s class.", phost->pActiveClass->Name);
}
}
else
{
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 :
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 pdev: Selected device
* @retval USBH_Status
*/
static USBH_Status USBH_HandleEnum(USB_OTG_CORE_HANDLE *pdev, USBH_HOST *phost)
{
USBH_Status Status = USBH_BUSY;
uint8_t Local_Buffer[64];
switch (phost->EnumState)
{
case ENUM_IDLE:
/* Get Device Desc for only 1st 8 bytes : To get EP0 MaxPacketSize */
if ( USBH_Get_DevDesc(pdev , phost, 8) == USBH_OK)
{
phost->Control.ep0size = phost->device_prop.Dev_Desc.bMaxPacketSize;
/* Issue Reset */
HCD_ResetPort(pdev);
phost->EnumState = ENUM_GET_FULL_DEV_DESC;
/* modify control channels configuration for MaxPacket size */
USBH_Modify_Channel (pdev,
phost->Control.hc_num_out,
0,
0,
0,
phost->Control.ep0size);
USBH_Modify_Channel (pdev,
phost->Control.hc_num_in,
0,
0,
0,
phost->Control.ep0size);
}
break;
case ENUM_GET_FULL_DEV_DESC:
/* Get FULL Device Desc */
if ( USBH_Get_DevDesc(pdev, phost, USB_DEVICE_DESC_SIZE)\
== USBH_OK)
{
/* user callback for device descriptor available */
phost->usr_cb->DeviceDescAvailable(&phost->device_prop.Dev_Desc);
phost->EnumState = ENUM_SET_ADDR;
}
break;
case ENUM_SET_ADDR:
/* set address */
if ( USBH_SetAddress(pdev, phost, USBH_DEVICE_ADDRESS) == USBH_OK)
{
USB_OTG_BSP_mDelay(2);
phost->device_prop.address = USBH_DEVICE_ADDRESS;
/* user callback for device address assigned */
phost->usr_cb->DeviceAddressAssigned();
phost->EnumState = ENUM_GET_CFG_DESC;
/* modify control channels to update device address */
USBH_Modify_Channel (pdev,
phost->Control.hc_num_in,
phost->device_prop.address,
0,
0,
0);
USBH_Modify_Channel (pdev,
phost->Control.hc_num_out,
phost->device_prop.address,
0,
0,
0);
}
break;
case ENUM_GET_CFG_DESC:
/* get standard configuration descriptor */
if ( USBH_Get_CfgDesc(pdev,
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(pdev,
phost,
phost->device_prop.Cfg_Desc.wTotalLength) == USBH_OK)
{
/* User callback for configuration descriptors available */
phost->usr_cb->ConfigurationDescAvailable(&phost->device_prop.Cfg_Desc,
phost->device_prop.Itf_Desc,
phost->device_prop.Ep_Desc[0]);
phost->EnumState = ENUM_GET_MFC_STRING_DESC;
}
break;
case ENUM_GET_MFC_STRING_DESC:
if (phost->device_prop.Dev_Desc.iManufacturer != 0)
{ /* Check that Manufacturer String is available */
if ( USBH_Get_StringDesc(pdev,
phost,
phost->device_prop.Dev_Desc.iManufacturer,
Local_Buffer ,
0xff) == USBH_OK)
{
/* User callback for Manufacturing string */
phost->usr_cb->ManufacturerString(Local_Buffer);
phost->EnumState = ENUM_GET_PRODUCT_STRING_DESC;
}
}
else
{
phost->usr_cb->ManufacturerString("N/A");
phost->EnumState = ENUM_GET_PRODUCT_STRING_DESC;
}
break;
case ENUM_GET_PRODUCT_STRING_DESC:
if (phost->device_prop.Dev_Desc.iProduct != 0)
{ /* Check that Product string is available */
if ( USBH_Get_StringDesc(pdev,
phost,
phost->device_prop.Dev_Desc.iProduct,
Local_Buffer,
0xff) == USBH_OK)
{
/* User callback for Product string */
phost->usr_cb->ProductString(Local_Buffer);
phost->EnumState = ENUM_GET_SERIALNUM_STRING_DESC;
}
}
else
{
phost->usr_cb->ProductString("N/A");
phost->EnumState = ENUM_GET_SERIALNUM_STRING_DESC;
}
break;
case ENUM_GET_SERIALNUM_STRING_DESC:
if (phost->device_prop.Dev_Desc.iSerialNumber != 0)
{ /* Check that Serial number string is available */
if ( USBH_Get_StringDesc(pdev,
phost,
phost->device_prop.Dev_Desc.iSerialNumber,
Local_Buffer,
0xff) == USBH_OK)
{
/* User callback for Serial number string */
phost->usr_cb->SerialNumString(Local_Buffer);
phost->EnumState = ENUM_SET_CONFIGURATION;
}
}
else
{
phost->usr_cb->SerialNumString("N/A");
phost->EnumState = ENUM_SET_CONFIGURATION;
}
break;
case ENUM_SET_CONFIGURATION:
/* set configuration (default config) */
if (USBH_SetCfg(pdev,
phost,
phost->device_prop.Cfg_Desc.bConfigurationValue) == USBH_OK)
{
phost->EnumState = ENUM_DEV_CONFIGURED;
}
break;
case ENUM_DEV_CONFIGURED:
/* user callback for enumeration done */
Status = USBH_OK;
break;
default:
break;
}
return Status;
}
/**
* @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;
int reset_core = 0;
uint8_t idx = 0, j;
if (mapped_port_state(phost) == PORT_UP) {
if (!phost->device.is_attached)
{
phost->gState = HOST_DEV_DISCONNECTED;
}
else if (phost->requestCoreReset) {
phost->gState = HOST_DEV_DISCONNECTED;
reset_core = 1;
}
}
switch (phost->gState)
{
case HOST_IDLE :
if (phost->device.is_connected)
{
/* Wait for 200 ms after connection */
USBH_UsrLog(".");
USBH_UsrLog(".");
USBH_UsrLog(".");
USBH_UsrLog("Connected, delay %dms before port reset", USBH_CONNECT_DELAY);
USBH_Delay(USBH_CONNECT_DELAY);
/* TODO QUICK FIX: making sure Global Int is enabled, may be disabled by
* unpaired port down event in hcd, ridiculous bug
*/
USBH_LL_Start(phost);
USBH_LL_ResetPort(phost);
phost->gState = HOST_DEV_WAIT_FOR_ATTACHMENT;
phost->gStateTimer = HAL_GetTick();
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_PORT_EVENT, 0);
#endif
}
break;
case HOST_DEV_WAIT_FOR_ATTACHMENT:
if (!phost->device.is_connected)
{
// phost->device.is_connected = 0;
phost->gState = HOST_IDLE;
}
else if (phost->device.is_attached)
{
phost->gState = HOST_DEV_ATTACHED;
}
else if (HAL_GetTick() - phost->gStateTimer > 1000) {
// phost->device.is_connected = 0;
phost->gState = HOST_IDLE;
}
break;
case HOST_DEV_ATTACHED :
if (!phost->device.is_connected)
{
// phost->device.is_connected = 0;
phost->gState = HOST_IDLE;
}
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);
/* do this here, instead in interrupt context **/
if (phost->pUser != NULL)
{
phost->pUser(phost, HOST_USER_CONNECTION);
}
#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.");
USBH_Print_DeviceDescriptor(phost);
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.");
phost->AbortReason = ABORT_NOCLASS_REGISTERED;
phost->gState = HOST_ABORT_STATE;
}
else
{
phost->pActiveClass = NULL;
// for (idx = 0; idx < USBH_MAX_NUM_SUPPORTED_CLASS ; idx ++)
for (idx = 0; idx < phost->ClassNumber; idx++)
{
// search all interfaces, not only interface 0
for (j = 0; j < phost->device.CfgDesc.bNumInterfaces; j++)
{
if (phost->pClass[idx]->ClassCode
== phost->device.CfgDesc.Itf_Desc[j].bInterfaceClass)
{
phost->pActiveClass = phost->pClass[idx];
USBH_UsrLog(
"Registered %s class with code 0x%02x matches interface #%d",
phost->pClass[idx]->Name, phost->pClass[idx]->ClassCode, j);
break;
}
}
if (phost->pActiveClass != NULL)
break;
}
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->AbortReason = ABORT_CLASSINIT_FAIL;
phost->gState = HOST_ABORT_STATE;
USBH_UsrLog ("Device not supporting %s class.", phost->pActiveClass->Name);
phost->pActiveClass = NULL;
}
}
else
{
phost->AbortReason = ABORT_NOCLASS_MATCH;
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)
{
/* as long as pActiveClass is set, this state is */
status = phost->pActiveClass->Requests(phost);
if(status == USBH_OK)
{
phost->gState = HOST_CLASS;
}
else if (status == USBH_FAIL || status == USBH_NOT_SUPPORTED)
{
phost->pActiveClass->DeInit(phost);
phost->pActiveClass = NULL;
phost->AbortReason = ABORT_CLASSREQUEST_FAIL;
phost->gState = HOST_ABORT_STATE;
USBH_ErrLog("Class Request fail.")
}
}