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+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : usb_mem.c
+* Author : MCD Application Team
+* Version : V2.2.1
+* Date : 09/22/2008
+* Description : Utility functions for memory transfers to/from PMA
+********************************************************************************
+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "usb_lib.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Extern variables ----------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/*******************************************************************************
+* Function Name : UserToPMABufferCopy
+* Description : Copy a buffer from user memory area to packet memory area (PMA)
+* Input : - pbUsrBuf: pointer to user memory area.
+* - wPMABufAddr: address into PMA.
+* - wNBytes: no. of bytes to be copied.
+* Output : None.
+* Return : None .
+*******************************************************************************/
+void UserToPMABufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes)
+{
+ u32 n = (wNBytes + 1) >> 1; /* n = (wNBytes + 1) / 2 */
+ u32 i, temp1, temp2;
+ u16 *pdwVal;
+ pdwVal = (u16 *)(wPMABufAddr * 2 + PMAAddr);
+ for (i = n; i != 0; i--)
+ {
+ temp1 = (u16) * pbUsrBuf;
+ pbUsrBuf++;
+ temp2 = temp1 | (u16) * pbUsrBuf << 8;
+ *pdwVal++ = temp2;
+ pdwVal++;
+ pbUsrBuf++;
+ }
+}
+/*******************************************************************************
+* Function Name : PMAToUserBufferCopy
+* Description : Copy a buffer from user memory area to packet memory area (PMA)
+* Input : - pbUsrBuf = pointer to user memory area.
+* - wPMABufAddr = address into PMA.
+* - wNBytes = no. of bytes to be copied.
+* Output : None.
+* Return : None.
+*******************************************************************************/
+void PMAToUserBufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes)
+{
+ u32 n = (wNBytes + 1) >> 1;/* /2*/
+ u32 i;
+ u32 *pdwVal;
+ pdwVal = (u32 *)(wPMABufAddr * 2 + PMAAddr);
+ for (i = n; i != 0; i--)
+ {
+ *(u16*)pbUsrBuf++ = *pdwVal++;
+ pbUsrBuf++;
+ }
+}
+
+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/