vusbd11st.c
2.77 KB
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/*HEADER******************************************************************
**************************************************************************
***
*** Copyright (c) 2001-2002 ARC International.
*** All rights reserved
***
*** This software embodies materials and concepts which are
*** confidential to ARC International and is made
*** available solely pursuant to the terms of a written license
*** agreement with ARC International
***
*** File: vusbd11.c
***
*** Comments:
*** This file contains the low-level VUSB1.1 routines.
***
**************************************************************************
*END*********************************************************************/
#include "os_bb.h"
#include "osint.h"
/*FUNCTION*----------------------------------------------------------------
*
* Function Name : _usb_dci_vusb11_get_endpoint_status
* Returned Value : None
* Comments :
* Gets the endpoint status
*
*END*--------------------------------------------------------------------*/
uint_8 _usb_dci_vusb11_get_endpoint_status
(
/* [IN] Handle to the USB device */
_usb_device_handle handle,
/* [IN] Endpoint to get */
uint_8 ep
)
{ /* Body */
USB_DEV_STATE_STRUCT_PTR usb_dev_ptr;
usb_dev_ptr = (USB_DEV_STATE_STRUCT_PTR)handle;
return ((usb_dev_ptr->ENDPT_REGS[ep] & VUSB_EP_CTRL_STALL) ? 1 : 0);
} /* EndBody */
/*FUNCTION*----------------------------------------------------------------
*
* Function Name : _usb_dci_vusb11_set_endpoint_status
* Returned Value : None
* Comments :
* Sets the endpoint registers e.g. to enable TX, RX, control
*
*END*--------------------------------------------------------------------*/
void _usb_dci_vusb11_set_endpoint_status
(
/* [IN] Handle to the USB device */
_usb_device_handle handle,
/* [IN] Endpoint to set */
uint_8 ep,
/* [IN] Endpoint characteristics */
uint_8 stall
)
{
USB_DEV_STATE_STRUCT_PTR usb_dev_ptr;
usb_dev_ptr = (USB_DEV_STATE_STRUCT_PTR)handle;
if (stall) {
/* the CTL byte is updated */
usb_dev_ptr->XDSEND[ep].CTL |= VUSB_EP_CTRL_STALL;
usb_dev_ptr->XDRECV[ep].CTL |= VUSB_EP_CTRL_STALL;
usb_dev_ptr->ENDPT_REGS[ep] |= VUSB_EP_CTRL_STALL;
} else {
/* the CTL byte is updated */
usb_dev_ptr->XDSEND[ep].CTL &= ~VUSB_EP_CTRL_STALL;
usb_dev_ptr->XDRECV[ep].CTL &= ~VUSB_EP_CTRL_STALL;
usb_dev_ptr->ENDPT_REGS[ep] &= ~VUSB_EP_CTRL_STALL;
} /* Endif */
} /* Endif */