rzkwrite.c

zilog的实时操作系统RZK,可以移植到多种处理器上

/*
 * File       : RZKWrite.c
 * Scope      : Scope is limited to only device driver framework.
 *
 * Description: This file implements the Write API of device driver framework
 *
 * Copyright 2004 ZiLOG Inc.  ALL RIGHTS RESERVED.
 *
 * This file contains unpublished confidential and proprietary information
 * of ZiLOG, Inc.
 * NO PART OF THIS WORK MAY BE DUPLICATED, STORED, PUBLISHED OR DISCLOSED 
 * IN ANY FORM WITHOUT THE PRIOR WRITTEN CONSENT OF ZiLOG, INC.
 * This is not a license and no use of any kind of this work is authorized
 * in the absence of a written license granted by ZiLOG, Inc. in ZiLOG's 
 * sole discretion 
 */


#include "ZTypes.h"
#include "ZSysgen.h"
#include "ZDevice.h"
#include "ZThread.h"
#include "ZInterrupt.h"
#include "externvar.h"

DDF_STATUS_t RZKDevWrite( 
						RZK_DEVICE_CB_t *pdev,	// device id
						RZK_DEV_BUFFER_t *buf,		// buffer pointer where the data need to be stored
						RZK_DEV_BYTES_t nBytes	// input-bytes to write, output-bytes write
						 )
{
#ifdef RZK_DEBUG 
	// check for the device handle
	if( (pdev == NULL) || (buf == NULL) || !(nBytes) )
		return DDFERR_INVALID_ARGUMENTS ;
#endif /* */

	// now call the driver handler installed for the device
	if(pdev->fnWrite)
		return (( * (pdev->fnWrite) )( pdev, buf, nBytes ) );
	else
		return DDFERR_INVALID_INITIALIZER ;
}// end of RZKDevWrite

DDF_STATUS_t RZKDevPutc(
						RZK_DEVICE_CB_t *pdev,// device id
						RZK_DEV_BUFFER_t buf// buffer pointer where the data need to be stored
						)
{
#ifdef RZK_DEBUG 
	// check for the device handle
	if(pdev == NULL)
		return DDFERR_INVALID_ARGUMENTS ;
#endif /* */
	// now call the driver handler installed for the device
	if(pdev->fnPutc)	
		return (( * (pdev->fnPutc) )( pdev, buf) );
	else
		return DDFERR_INVALID_INITIALIZER ;
}