usbcommon.c

smartARM2400 USB host例程

/*****************************Copyright(c)****************************************************************
**                    Guangzhou ZHIYUAN electronics Co.,LTD.
**                                     
**                           http://www.embedtools.com
**
**------File Info-----------------------------------------------------------------------------------------
** File Name:            usbcommon.c
** Latest modified Date: 2007-11-04        
** Latest Version:       V1.0    
** Description:          USB软件包各层共同引用的函数及全局变量定义
**                       
**--------------------------------------------------------------------------------------------------------
** Created By:           吴隆穗  Longsui Wu   
** Created date:         2007-11-04    
** Version:              V1.0    
** Descriptions:         初始版本
**
**--------------------------------------------------------------------------------------------------------
** Modified by:          
** Modified date:        
** Version:              
** Description:          
**
**--------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Description:
**
*********************************************************************************************************/
#include "USBHostConfig.h"


/*********************************************************************************************************
** Function name:       usbMemCopy
** Descriptions:        内存拷贝函数
** input parameters:    pucSrc  源缓冲区地址
**                      usLen   要拷贝的缓冲区长度
** output parameters:   pvDest  目的缓冲区地址
** Returned value:      TRUE : 成功  FALSE : 失败
*********************************************************************************************************/
USB_BOOL usbMemCopy (void *pvDest, USB_INT8U *pucSrc, USB_INT32U uiLen)
{
    USB_INT16U i;
    USB_INT8U *pucDest = (USB_INT8U *)pvDest;
    
    if ((pucSrc == NULL) || (pucDest == NULL)) {
        return FALSE;
    }
    
    for (i = 0; i < uiLen; i++) {
        *(pucDest + i) = *(pucSrc + i);
    }
    
    return TRUE;
}

/*********************************************************************************************************
** Function name:       usbMemSet
** Descriptions:        将某段缓冲区设置为某个特定的值
** input parameters:    pvMem   缓冲区地址
**                      ucNum   要设置的值
**                      uiLen   缓冲区长度
** output parameters:   None
** Returned value:      TRUE : 成功  FALSE : 失败
*********************************************************************************************************/
USB_BOOL usbMemSet (void *pvMem, USB_INT8U ucNum, USB_INT32U uiLen)
{
    USB_INT8U *pucMem;
    
    if ((pvMem == NULL) || (uiLen == 0)) {
        return FALSE;
    }
    
    pucMem = (USB_INT8U *)pvMem;
    for ( ; uiLen > 0; uiLen--) {
        *(pucMem + uiLen - 1) = ucNum;
    }
    
    return TRUE;
}

/*********************************************************************************************************
** Function name:		__sdDelay1ms
** Descriptions:		延时多个1ms
** input parameters:	uiDly 延时的毫秒数
** output parameters:	无
** Returned value:		无
*********************************************************************************************************/
void __usbDelay1ms (unsigned int uiDly)
{
	unsigned int i;
	
	for (; uiDly > 0; uiDly--) {
		for (i = 0; i < 4914; i++) {
			;
		}
	}
}

/*********************************************************************************************************
  END FILE
*********************************************************************************************************/