/**
* @brief USBH_Init
* Host hardware and stack initializations
* @param class_cb: Class callback structure address
* @param usr_cb: User callback structure address
* @retval None
*/
void USBH_Init(USB_OTG_CORE_HANDLE *pdev,
USB_OTG_CORE_ID_TypeDef coreID,
USBH_HOST *phost,
USBH_Class_cb_TypeDef *class_cb,
USBH_Usr_cb_TypeDef *usr_cb)
{
/* Hardware Init */
USB_OTG_BSP_Init(pdev);
/* configure GPIO pin used for switching VBUS power */
USB_OTG_BSP_ConfigVBUS(0);
/* Host de-initializations */
USBH_DeInit(pdev, phost);
/*Register class and user callbacks */
phost->class_cb = class_cb;
phost->usr_cb = usr_cb;
/* Start the USB OTG core */
HCD_Init(pdev , coreID);
/* Upon Init call usr call back */
phost->usr_cb->Init();
/* Enable Interrupts */
USB_OTG_BSP_EnableInterrupt(pdev);
}
/**
* This function will initialize susb host controller device.
*
* @param dev the host controller device to be initalize.
*
* @return the error code, RT_EOK on successfully.
*/
static rt_err_t susb_init(rt_device_t dev)
{
rt_sem_init(&sem_lock, "s_lock", 1, RT_IPC_FLAG_FIFO);
/* roothub initilizition */
root_hub.num_ports = 1;
root_hub.is_roothub = RT_TRUE;
root_hub.self = RT_NULL;
root_hub.hcd = &susb_hcd;
/* Hardware Init */
USB_OTG_BSP_Init(&USB_OTG_Core);
/* configure GPIO pin used for switching VBUS power */
USB_OTG_BSP_ConfigVBUS(0);
/* Host de-initializations */
USBH_DeInit(&USB_OTG_Core, &USB_Host);
/* Start the USB OTG core */
HCD_Init(&USB_OTG_Core , USB_OTG_FS_CORE_ID);
USBH_DeAllocate_AllChannel(&USB_OTG_Core);
/* Enable Interrupts */
USB_OTG_BSP_EnableInterrupt(&USB_OTG_Core);
return RT_EOK;
}
/**
* @brief USBH_Process
* USB Host core main state machine process
* @param None
* @retval None
*/
void USBH_Process(USB_OTG_CORE_HANDLE *pdev, USBH_HOST *phost)
{
volatile USBH_Status status = USBH_FAIL;
// if (USB_DEBUG) {
// USB_debugEvent();
// xprintf("USBH_Process phost->gState = %d\n", phost->gState);
// }
/* check for Host port events */
if (((HCD_IsDeviceConnected(pdev) == 0) || (HCD_IsPortEnabled(pdev) == 0)) && (phost->gState != HOST_IDLE)) {
if (phost->gState != HOST_DEV_DISCONNECTED) {
phost->gState = HOST_DEV_DISCONNECTED;
// if (USB_DEBUG){
// USB_debugEvent();
// }
}
}
switch (phost->gState) {
case HOST_IDLE:
if (HCD_IsDeviceConnected(pdev)) {
phost->gState = HOST_WAIT_PRT_ENABLED;
/*wait debounce delay */
USB_OTG_BSP_mDelay(200); // was 100
// if (USB_DEBUG){
// USB_debugEvent();
// }
/* Apply a port RESET */
HCD_ResetPort(pdev);
/* User RESET callback*/
phost->usr_cb->ResetDevice();
}
break;
case HOST_WAIT_PRT_ENABLED:
if (pdev->host.PortEnabled == 1) {
phost->gState = HOST_DEV_ATTACHED;
}
break;
case HOST_DEV_ATTACHED:
phost->usr_cb->DeviceAttached();
phost->Control.hc_num_out = USBH_Alloc_Channel(pdev, 0x00);
phost->Control.hc_num_in = USBH_Alloc_Channel(pdev, 0x80);
// if (USB_DEBUG){
// USB_debugEvent();
// }
phost->device_prop.speed = HCD_GetCurrentSpeed(pdev);
phost->gState = HOST_ENUMERATION;
phost->usr_cb->DeviceSpeedDetected(phost->device_prop.speed);
// if (USB_DEBUG){
// USB_debugEvent();
// }
/* Open Control pipes */
USBH_Open_Channel(pdev, phost->Control.hc_num_in, phost->device_prop.address, phost->device_prop.speed, EP_TYPE_CTRL, phost->Control.ep0size);
// if (USB_DEBUG){
// USB_debugEvent();
// }
/* Open Control pipes */
USBH_Open_Channel(pdev, phost->Control.hc_num_out, phost->device_prop.address, phost->device_prop.speed, EP_TYPE_CTRL, phost->Control.ep0size);
// if (USB_DEBUG){
// USB_debugEvent();
// }
break;
case HOST_ENUMERATION:
/* Check for enumeration status */
if (USBH_HandleEnum(pdev, phost) == USBH_OK) {
/* The function shall return USBH_OK when full enumeration is complete */
/* user callback for end of device basic enumeration */
phost->usr_cb->EnumerationDone();
phost->gState = HOST_USR_INPUT;
// if (USB_DEBUG){
// USB_debugEvent();
// }
}
break;
case HOST_USR_INPUT:
/*The function should return user response true to move to class state */
if (phost->usr_cb->UserInput() == USBH_USR_RESP_OK) {
if ((phost->class_cb->Init(pdev, phost))\
== USBH_OK) {
phost->gState = HOST_CLASS_REQUEST;
}
// if (USB_DEBUG){
// USB_debugEvent();
// }
}
break;
case HOST_CLASS_REQUEST:
/* process class standard contol requests state machine */
// if (USB_DEBUG){
// USB_debugEvent();
// }
status = phost->class_cb->Requests(pdev, phost);
if (status == USBH_OK) {
phost->gState = HOST_CLASS;
// if (USB_DEBUG){
// USB_debugEvent();
// }
}
else {
// if (USB_DEBUG){
// USB_debugEvent();
// }
USBH_ErrorHandle(phost, status);
}
break;
case HOST_CLASS:
/* process class state machine */
status = phost->class_cb->Machine(pdev, phost);
// if (USB_DEBUG){
// USB_debugEvent();
// }
USBH_ErrorHandle(phost, status);
break;
case HOST_CTRL_XFER:
/* process control transfer state machine */
// if (USB_DEBUG){
// USB_debugEvent();
// }
USBH_HandleControl(pdev, phost);
break;
case HOST_SUSPENDED:
break;
case HOST_ERROR_STATE:
/* Re-Initilaize Host for new Enumeration */
// if (USB_DEBUG){
// USB_debugEvent();
// }
USBH_DeInit(pdev, phost);
phost->usr_cb->DeInit();
phost->class_cb->DeInit(pdev, &phost->device_prop);
break;
case HOST_DEV_DISCONNECTED:
// if (USB_DEBUG){
// USB_debugEvent();
// }
/* Manage User disconnect operations*/
phost->usr_cb->DeviceDisconnected();
/* Re-Initilaize Host for new Enumeration */
USBH_DeInit(pdev, phost);
phost->usr_cb->DeInit();
phost->class_cb->DeInit(pdev, &phost->device_prop);
USBH_DeAllocate_AllChannel(pdev);
phost->gState = HOST_IDLE;
/* Re-Initilaize Host for new Enumeration */
HCD_Init(pdev,
#ifdef USE_USB_OTG_FS
USB_OTG_FS_CORE_ID
#else
USB_OTG_HS_CORE_ID
#endif
);
break;
default:
break;
}
}
/**
* @brief USBH_Process
* USB Host core main state machine process
* @param None
* @retval None
*/
void USBH_Process(USB_OTG_CORE_HANDLE *pdev , USBH_HOST *phost)
{
volatile USBH_Status status = USBH_FAIL;
/* check for Host port events */
if (((HCD_IsDeviceConnected(pdev) == 0)|| (HCD_IsPortEnabled(pdev) == 0))&& (phost->gState != HOST_IDLE))
{
if(phost->gState != HOST_DEV_DISCONNECTED)
{
phost->gState = HOST_DEV_DISCONNECTED;
}
}
switch (phost->gState)
{
case HOST_IDLE :
if (HCD_IsDeviceConnected(pdev))
{
phost->gState = HOST_WAIT_PRT_ENABLED;
/*wait denounce delay */
USB_OTG_BSP_mDelay(100);
/* Apply a port RESET */
HCD_ResetPort(pdev);
/* User RESET callback*/
phost->usr_cb->ResetDevice();
}
break;
case HOST_WAIT_PRT_ENABLED:
if (pdev->host.PortEnabled == 1)
{
phost->gState = HOST_DEV_ATTACHED;
USB_OTG_BSP_mDelay(50);
}
break;
case HOST_DEV_ATTACHED :
phost->usr_cb->DeviceAttached();
phost->Control.hc_num_out = USBH_Alloc_Channel(pdev, 0x00);
phost->Control.hc_num_in = USBH_Alloc_Channel(pdev, 0x80);
/* Reset USB Device */
if ( HCD_ResetPort(pdev) == 0)
{
phost->usr_cb->ResetDevice();
/* Host is Now ready to start the Enumeration */
phost->device_prop.speed = HCD_GetCurrentSpeed(pdev);
phost->gState = HOST_ENUMERATION;
phost->usr_cb->DeviceSpeedDetected(phost->device_prop.speed);
/* Open Control pipes */
USBH_Open_Channel (pdev,
phost->Control.hc_num_in,
phost->device_prop.address,
phost->device_prop.speed,
EP_TYPE_CTRL,
phost->Control.ep0size);
/* Open Control pipes */
USBH_Open_Channel (pdev,
phost->Control.hc_num_out,
phost->device_prop.address,
phost->device_prop.speed,
EP_TYPE_CTRL,
phost->Control.ep0size);
}
break;
case HOST_ENUMERATION:
/* Check for enumeration status */
if ( USBH_HandleEnum(pdev , phost) == USBH_OK)
{
/* The function shall return USBH_OK when full enumeration is complete */
/* user callback for end of device basic enumeration */
phost->usr_cb->EnumerationDone();
#if defined (USB_OTG_FS_LOW_PWR_MGMT_SUPPORT) || defined (USB_OTG_HS_LOW_PWR_MGMT_SUPPORT)
phost->gState = HOST_SUSPENDED;
#else
phost->gState = HOST_USR_INPUT;
#endif /* LOW_PWR_MGMT_SUPPORT*/
}
break;
case HOST_USR_INPUT:
/*The function should return user response true to move to class state */
if ( phost->usr_cb->UserInput() == USBH_USR_RESP_OK)
{
if((phost->class_cb->Init(pdev, phost))\
== USBH_OK)
{
phost->gState = HOST_CLASS_REQUEST;
}
}
break;
case HOST_CLASS_REQUEST:
/* process class standard control requests state machine */
status = phost->class_cb->Requests(pdev, phost);
if(status == USBH_OK)
{
phost->gState = HOST_CLASS;
}
else
{
USBH_ErrorHandle(phost, status);
}
break;
case HOST_CLASS:
/* process class state machine */
status = phost->class_cb->Machine(pdev, phost);
USBH_ErrorHandle(phost, status);
break;
case HOST_CTRL_XFER:
/* process control transfer state machine */
USBH_HandleControl(pdev, phost);
break;
#if defined (USB_OTG_FS_LOW_PWR_MGMT_SUPPORT) || defined (USB_OTG_HS_LOW_PWR_MGMT_SUPPORT)
case HOST_SUSPENDED:
if (USBH_SetDeviceFeature(pdev, phost, FEATURE_SELECTOR_DEVICE, 0)==USBH_OK)
{
suspend_flag = 1;
USB_OTG_BSP_Suspend(pdev);
phost->usr_cb->UserInput();
PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
/* After wakeup got to HOST_WAKEUP state */
phost->gState = HOST_WAKEUP;
}
break;
case HOST_WAKEUP:
/* issue a ClearDeviceFeature request */
if (USBH_ClearDeviceFeature(pdev, phost, FEATURE_SELECTOR_DEVICE, 0)==USBH_OK)
{
phost->gState = HOST_USR_INPUT;
}
break;
#endif /* USE_HOST_MODE */
case HOST_ERROR_STATE:
/* Re-Initialize Host for new Enumeration */
USBH_DeInit(pdev, phost);
phost->usr_cb->DeInit();
phost->class_cb->DeInit(pdev, &phost->device_prop);
break;
case HOST_DEV_DISCONNECTED :
/* Manage User disconnect operations*/
phost->usr_cb->DeviceDisconnected();
/* Re-Initialize Host for new Enumeration */
USBH_DeInit(pdev, phost);
phost->usr_cb->DeInit();
phost->class_cb->DeInit(pdev, &phost->device_prop);
USBH_DeAllocate_AllChannel(pdev);
phost->gState = HOST_IDLE;
/* Re-Initialize Host for new Enumeration */
HCD_Init(pdev,
#ifdef USE_USB_OTG_FS
USB_OTG_FS_CORE_ID
#else
USB_OTG_HS_CORE_ID
#endif
);
break;
default :
break;
}
}