/*****************************************************************************
 * Copyright (c) 2023, Nations Technologies Inc.
 *
 * All rights reserved.
 * ****************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Nations' name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL NATIONS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ****************************************************************************/

/**
*\*\file usbfsd_sil.c
*\*\author Nations
*\*\version v1.0.0
*\*\copyright Copyright (c) 2023, Nations Technologies Inc. All rights reserved.
**/
#include "usbfsd_lib.h"

/**
*\*\name    USB_SilInit.
*\*\fun     Initialize the USB Device IP and the Endpoint 0.
*\*\param   none
*\*\return  Status.
**/
uint32_t USB_SilInit(void)
{
    /* USB interrupts initialization */
    /* clear pending interrupts */
    _SetISTR(0);
    wInterrupt_Mask = IMR_MSK;
    /* set interrupts mask */
    _SetCNTR(wInterrupt_Mask);
    return 0;
}

/**
*\*\name    USB_SilWrite.
*\*\fun     Write a buffer of data to a selected endpoint.
*\*\param   bEpAddr The address of the non control endpoint.
*\*\param   pBufferPointer The pointer to the buffer of data to be written to the endpoint.
*\*\param   wBufferSize Number of data to be written (in bytes).
*\*\return  Status.
**/
uint32_t USB_SilWrite(uint8_t bEpAddr, uint8_t* pBufferPointer, uint32_t wBufferSize)
{
    /* Use the memory interface function to write to the selected endpoint */
    USB_CopyUserToPMABuf(pBufferPointer, USB_GetEpTxAddr(bEpAddr & 0x7F), wBufferSize);
    /* Update the data length in the control register */
    USB_SetEpTxCnt((bEpAddr & 0x7F), wBufferSize);
    return 0;
}

/**
*\*\name    USB_SilRead.
*\*\fun     Read a buffer of data from a selected endpoint.
*\*\param   bEpAddr The address of the non control endpoint.
*\*\param   pBufferPointer The pointer to which will be saved the received data buffer.
*\*\return  data length.
**/
uint32_t USB_SilRead(uint8_t bEpAddr, uint8_t* pBufferPointer)
{
    uint32_t DataLength = 0;
    /* Get the number of received data on the selected Endpoint */
    DataLength = USB_GetEpRxCnt(bEpAddr & 0x7F);
    /* Use the memory interface function to write to the selected endpoint */
    USB_CopyPMAToUserBuf(pBufferPointer, USB_GetEpRxAddr(bEpAddr & 0x7F), DataLength);
    /* Return the number of received data */
    return DataLength;
}
