/**
* @brief USBH_LL_Disconnect
* Handle USB Host disconnection event
* @param phost: Host Handle
* @retval USBH_Status
*/
USBH_StatusTypeDef USBH_LL_Disconnect (USBH_HandleTypeDef *phost)
{
/*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;
}
/**
* @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_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.")
}
}
