usb_buf.c

Go to the documentation of this file.

/* Includes ------------------------------------------------------------------*/
#include "usb_buf.h"

void FreeUserBuffer (uint8_t EpID, uint8_t Dir)
{
    if (Dir == DBUF_EP_OUT)
    {
        _ToggleSWBUF_RX(EpID);
    }
    else if (Dir == DBUF_EP_IN)
    {
        _ToggleSWBUF_TX(EpID);
    }
}

void UserCopyToBuffer (uint8_t *UsrBuf, uint16_t BufAddr, uint16_t Bytes)
{
    uint32_t n = (Bytes + 1) >> 1;
    uint32_t i, temp;
    uint16_t *BaseAddr = (uint16_t *)(BufAddr * 2 + PBA_Addr);

    for (i = n; i != 0; i--)
    {
        temp = (uint16_t) * UsrBuf;
        UsrBuf++;
        *BaseAddr++ = temp | (uint16_t) * UsrBuf << 8;
        BaseAddr++;
        UsrBuf++;
    }
}

void BufferCopyToUser (uint8_t *UsrBuf, uint16_t BufAddr, uint16_t Bytes)
{
    uint32_t n = (Bytes + 1) >> 1;
    uint32_t i;
    uint32_t *BaseAddr = (uint32_t *)(BufAddr * 2 + PBA_Addr);

    for (i = n; i != 0; i--)
    {
        *(uint16_t*)UsrBuf++ = *BaseAddr++;
        UsrBuf++;
    }
}

/************************ (C) COPYRIGHT 2014 GIGADEVICE *****END OF FILE****/