/**************************************************************************//*!
*
* @name _usb_device_init
*
* @brief The function initializes the Device and Controller layer
*
* @param device_number : USB Device controller to initialize
* @param handle : pointer to USB Device handle
* @param number_of_endpoints : Endpoint count of the application
*
* @return status
* USB_OK : When Successfull
* USBERR_INVALID_NUM_OF_ENDPOINTS : When endpoints > max Supported
******************************************************************************
* This function initializes the Device layer and the Controller layer of the
* S08 USB stack. It initializes the variables used for this layer and then
* calls the controller layer initialize function
*****************************************************************************/
uint_8 _usb_device_init (
uint_8 device_number, /* [IN] USB Device controller to initialize */
_usb_device_handle _PTR_ handle, /* [IN] Pointer to USB Device handle */
uint_8 number_of_endpoints, /* [IN] Number of endpoints to initialize */
uint_8 bVregEn /* Enables or disables internal regulator */
)
{
UNUSED(handle);
/* validate endpoints param */
if((number_of_endpoints > MAX_SUPPORTED_ENDPOINTS) ||
(number_of_endpoints < MIN_SUPPORTED_ENDPOINTS))
{
return USBERR_INVALID_NUM_OF_ENDPOINTS;
}
/* init variables */
g_EPn_max = (uint_8)(number_of_endpoints - 1);
USB_Device_Init_Params();
#ifdef MULTIPLE_DEVICES
/* Initialize all services to null value */
Clear_Mem((uint_8_ptr)g_usb_CB,
(uint_32)(sizeof(USB_SERVICE_CALLBACK) * USB_SERVICE_MAX), (uint_8)0);
#endif
/* Call controller layer initialization function */
return USB_DCI_Init(device_number, bVregEn);
}
/******************************************************************************
* Function: void USB_Bus_Reset_Handler(void)
*
* Input: None
* Output: None
*
* Overview: Once a USB bus reset is received from the host, this
* function should be called. It resets the device address to
* zero, disables all non-EP0 endpoints, initializes EP0 to
* be ready for default communication, clears all USB
* interrupt flags, unmasks applicable USB interrupts, and
* reinitializes internal state-machine.
*****************************************************************************/
void USB_Bus_Reset_Handler(void)
{
ERRSTAT = 0xFF; /* clear USB error flag*/
CTL = 0x02; /*Reset all ping-pong buffer, and SIE logic*/
while(INTSTAT_TOKDNEF ) /* Flush any pending transactions because 4 status buffer*/
INTSTAT = 0xBF;
CTL = 0x01;
ADDR = 0x00; /* reset to default address*/
Clear_Mem((byte*)&EPCTL0,7); /* disable all endpoints */
EPCTL0 = EP_CTRL|HSHK_EN; /* enable endpoint 0*/
USB_Prepare_Next_Trf(); /*prepare to receive the setup packet*/
Usb_Stat.BitCtl.RemoteWakeup = 0; /* default status flag to disable*/
Usb_Active_Cfg = 0;
Usb_Device_State = DEFAULT_STATE;
Old_Usb_State = DEFAULT_STATE ;
ERRENB = 0xBF; /* disable all USB error interrupt sources*/
#ifdef ENABLE_SOF_INT
INTENB = 0x9F; /* enable all interrupts except RESUME*/
#else
INTENB = 0x9B;
#endif
}
/*
** ===================================================================
** Method : usb_device__usb_device_init (component USB_DEVICE_STACK)
** Description :
** This function initializes the Device layer and the
** Controller layer of the S08 USB stack. It initialised the
** variables used for this layer and then calls the controller
** layer initialize function
** Parameters :
** NAME - DESCRIPTION
** device_number - [IN] USB Device
** controller to initialize
** * handle - [IN] Pointer to USB Device handle
** number_of_endpoints - [IN]
** Number of endpoints to initialize
** Returns :
** --- - Error code
** ===================================================================
*/
uint_8 _usb_device_init(uint_8 device_number, _usb_device_handle _PTR_ handle, uint_8 number_of_endpoints)
{
UNUSED(handle);
/* validate endpoints param */
if((number_of_endpoints > MAX_SUPPORTED_ENDPOINTS) ||
(number_of_endpoints < MIN_SUPPORTED_ENDPOINTS))
{
return USBERR_INVALID_NUM_OF_ENDPOINTS;
}
/*init variables */
g_EPn_max = (uint_8)(number_of_endpoints - 1);
USB_Device_Init_Params();
/* Initialize all services to null value */
Clear_Mem((uint_8_ptr)g_usb_CB,
(sizeof(USB_SERVICE_CALLBACK) * USB_SERVICE_MAX), (uint_8)NULL);
/* Call controller layer initialization function */
return USB_DCI_Init(device_number);
}
