csl_pwmgethwstatus.c

来自「TI达芬奇dm644x各硬件模块测试代码」· C语言 代码 · 共 105 行

/*  ============================================================================
 *   Copyright (c) Texas Instruments Inc 2002, 2003, 2004, 2005                 
 *                                                                              
 *   Use of this software is controlled by the terms and conditions found in the
 *   license agreement under which this software has been supplied.             
 *   ===========================================================================
 */ 

/** @file csl_pwmGetHwStatus.c
 *  
 *  @brief    File for functional layer of CSL API @a CSL_pwmGetHwStatus()
 *
 *  Path: \\(CSLPATH)\\ipmodules\\pwm\\src
 *
 *  @date    30 April, 2004
 *  @author  Pratheesh Gangadhar
 
 */
/* =============================================================================
 *  Revision History
 *  ===============
 *  02-Aug-2004 brn Updated for the new CSL architecture.
 *  11-Oct_2004 brn File updated with the review comments
 * =============================================================================
 */                                                 
                                               
 
#include <csl_pwm.h>
#include <csl_pwmAux.h>


/** ============================================================================
 *   @n@b CSL_pwmGetHwStatus
 *
 *   @b Description
 *   @n Gets the status of the different operations of PWM.
 *
 *   @b Arguments
 *   @verbatim
            hPwm            Handle to the PWM instance

            query           The query to this API of PWM which indicates the
                            status to be returned.

            response        Placeholder to return the status.
     @endverbatim
 *
 *   <b> Return Value </b>  CSL_Status
 *   @li                    CSL_SOK             - Status info return successful.
 *   @li                    CSL_ESYS_BADHANDLE  - Invalid handle
 *   @li                    CSL_ESYS_INVPARAMS  - Invalid parameter
 *
 *   <b> Pre Condition </b>
 *   @n  None
 *
 *   <b> Post Condition </b>
 *   @n  None
 *
 *   @b Modifies
 *   @n None
 *
 *   @b Example
 *   @verbatim
        CSL_PwmHandle          hPwm;
        CSL_PwmHwStatusQuery   query;
        void                   reponse;

        status = CSL_pwmGetHwStatus (hPwm, query, &response);

     @endverbatim
 * =============================================================================
 */
#pragma CODE_SECTION (CSL_pwmGetHwStatus, ".text:csl_section:pwm");
CSL_Status CSL_pwmGetHwStatus ( 
    CSL_PwmHandle          hPwm,
    CSL_PwmHwStatusQuery   query,
    void                   *response 
)
{
    CSL_Status status = CSL_SOK;
    if (hPwm == NULL) {
        status = CSL_ESYS_BADHANDLE;
        return status;
    }
    switch (query) {
        case CSL_PWM_QUERY_OUTPUT_STATUS: 
            *(Uint32*)response = CSL_pwmGetOutputStatus (hPwm);
            break;    
            
        case CSL_PWM_QUERY_OPER_STATUS: 
            *(Uint32*)response = CSL_pwmGetOperStatus (hPwm);      
            break;    
            
        case CSL_PWM_QUERY_PID: 
            *(Uint32*)response = CSL_pwmGetPid(hPwm);      
            break;        
            
        default:
            status = CSL_ESYS_INVQUERY ;    
            break;  
    }
    
    return status;
}