/*****************************************************************************
 * Copyright (c) 2019, 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 usb_endp.c
 * @author Nations
 * @version v1.0.0
 *
 * @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
 */
#include "hw_config.h"
#include "usb_lib.h"
#include "usb_istr.h"


uint8_t Receive_Buffer[2];
extern __IO uint8_t PrevXferComplete;
extern u8* Ep1DataPtr;
extern u8 key_buffer[8];


extern uint8_t m_tx_len;
extern uint8_t m_tx_flag;
extern uint8_t m_tx_buf[];

extern uint8_t m_rx_len;
extern uint8_t m_rx_flag;
extern uint8_t m_rx_buf[];

/**
 * @brief  EP2 OUT Callback Routine.
 */
void EP2_OUT_Callback(void)
{
    m_rx_flag = 1;
    m_rx_len = USB_GetEpRxCnt(ENDP2);
    USB_CopyPMAToUserBuf((unsigned char*)m_rx_buf, ENDP2_RXADDR, m_rx_len);
    SetEPRxStatus(ENDP2, EP_RX_VALID);
}

/**
 * @brief  EP2 IN Callback Routine.
 */
void EP2_IN_Callback(void)
{
    _SetEPTxStatus(ENDP2, EP_TX_NAK);
    
    if(m_tx_flag)
    {
        m_tx_flag = 0;      
        USB_SilWrite(EP2_IN, m_tx_buf, m_tx_len);
        USB_SetEpTxCnt(ENDP2, m_tx_len);
    }
    else
    {
        USB_SetEpTxCnt(ENDP2, 0);
    }
    _SetEPTxStatus(ENDP2, EP_TX_VALID);
}

/**
 * @}
 */
