csl_histopen.c

ccs下对dm6446的测试程序

/** @file csl_histOpen.c
 *
 *    @brief    File for functional layer of CSL API @a CSL_histOpen()
 *
 *  Description
 *    - The @a CSL_histOpen() function definition & it's associated functions
 *
 *  Modification 1
 *    - Created on: 10/19/2004
 *    - Reason:       Created the sources
 *
 *  @date 19th October, 2004
 *  @author Sandeep Tiwari.
 */

#include <csl_hist.h>
#include <_csl_resource.h>


#pragma CODE_SECTION (CSL_histOpen, ".text:csl_section:hist");

extern void _CSL_histGetAttrs(CSL_HistNum histNum , CSL_HistHandle hHist);

/** @brief Reserves the specified HIST for use. 
 */
CSL_HistHandle CSL_histOpen (
    /** Pointer to the object that holds reference to the
     *  instance of HIST requested after the call 
	 */
    CSL_HistObj              *hHistObj,
    /** Instance of Hist to which a handle is requested 
	 */
    CSL_HistNum              histNum,
    /** Specifies if HIST should be opened with exclusive or
     *  shared access to the associate pins 
	 */
    CSL_OpenMode            openMode,
    /** This returns the status (success/errors) of the call 
	 */
    CSL_Status              *status
	){

    CSL_HistNum histInst;
    CSL_HistHandle hHist = (CSL_HistHandle)NULL;

    hHistObj->openMode = openMode;
    
    if (histNum >= 0 ) {
        _CSL_histGetAttrs(histNum, hHistObj);
        hHist = (CSL_HistHandle)_CSL_certifyOpen((CSL_ResHandle)hHistObj, status);
    }
    else {
		for(histInst=(CSL_HistNum)0;histInst < (CSL_HistNum)CSL_HIST_PER_CNT;++histInst){
			_CSL_histGetAttrs(histInst, hHistObj);
            hHist = (CSL_HistHandle)_CSL_certifyOpen((CSL_ResHandle)hHistObj, status);
            if (*status == CSL_SOK) 
                break;
        }
        if (histInst == CSL_HIST_PER_CNT) 
            *status = CSL_ESYS_OVFL;
    }

   
    return hHist;
}