/**
* @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_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;
}
