peak_alerts.c

TDK 6521 SOC 芯片 DEMO程序

/***************************************************************************
 * This code and information is provided "as is" without warranty of any   *
 * kind, either expressed or implied, including but not limited to the     *
 * implied warranties of merchantability and/or fitness for a particular   *
 * purpose.                                                                *
 *                                                                         *
 * Copyright (C) 2005 Teridian Semiconductor Corp. All Rights Reserved.    *
 ***************************************************************************/
//**************************************************************************
//  DESCRIPTION: 71M652x POWER METER - Voltage/Current Peak Alerts.
// 
//  AUTHOR:  MTF
//
//  HISTORY: See end of file
//**************************************************************************
// File: PEAK_ALERTS.C 
//
#include "options.h"
#if PEAKS
#include "meter.h"
#include "peak_alerts.h"

#define PHASE_B_CALCULATED (PHASE_B_PRESENT || EQUATION == _1ELEMENT_3WIRE)

/*** External functions referenced by this module ***/

/*** External variables referenced by this module ***/

/*** Public functions declared within this module ***/
void Determine_Peaks (void);

/*** Public variables declared within this module ***/

/*** Private functions declared within this module ***/

/*** Private variables declared within this module ***/

//===========================================================================//
void Determine_Peaks (void)
{
    Status &= ~( MAXT | MINT | MAXIA | MAXIB | MAXIC | MAXVA | MAXVB | MAXVC );

    #if TEMPERATURE
    // temperature
    if (deltaT > TEMP_MAX) // temp max and min are relative to calibration temp.
        Status |= MAXT;
    if (deltaT < TEMP_MIN)
        Status |= MINT;
    #endif

    // calculated from most significant 16 bits of CE vsqsum and isqsum
    // Therefore, no square root operations are required
    if (Irms_A > IPThrshld) // always present
       Status |= MAXIA;
    #if PHASE_B_CALCULATED
    if (Irms_B > IPThrshld)
       Status |= MAXIB;
    #endif
    #if PHASE_C_PRESENT
    if (Irms_C > IPThrshld)
       Status |= MAXIC;
    #endif

    // If the voltage is present, test it
    if (Vrms_A > VPThrshld) // always present
       Status |= MAXVA;
    #if PHASE_B_CALCULATED
    if (Vrms_B > VPThrshld)
       Status |= MAXVB;
    #endif
    #if EQUATION == _2ELEMENT_4WIRE_DELTA || EQUATION == _3ELEMENT_4WIRE_WYE 
    if (Vrms_C > VPThrshld)
       Status |= MAXVC;
    #endif
}
#endif // PEAKS.
/***************************************************************************
 * History:
 * $Log: peak_alerts.c,v $
 * Revision 1.16  2006/10/11 20:46:47  tvander
 * Fixed phase B accumulation and measurement for equation 1.
 * Phase B is not part of the equation, but is very useful for calibration.
 *
 * Revision 1.15  2006/09/09 01:14:32  gmikef
 * *** empty log message ***
 *
 * Revision 1.14  2006/06/08 21:00:03  tvander
 * Corrected so it only measures voltages that exist.
 *
 * Revision 1.13  2006/06/03 00:08:09  tvander
 * Fix spurious max. current error.
 *
 * Revision 1.12  2006/05/18 23:18:53  tvander
 * 16K and 32K
 * First cut at new requirements.
 * 32K 6521 is grossly tested.
 * All others have a clean compile with C51 8.02
 *
 * Revision 1.11  2006/03/06 03:40:12  Michael T. Fischer
 * More 6530 prep.
 *
 * Revision 1.9  2005/11/05 01:58:15  tvander
 * Added bits to status register
 *
 * Revision 1.8  2005/10/08 04:41:26  tvander
 * Fixed priority inversion.
 * Rewrote watchdog to work in brownout, but of course it doesn't work.
 * Watchdog can now be defeated by clearing watchdog option to 0.
 * Reorganized watt hour modules (at last!).
 * Disabled reading of STATUS in 6521_cli because the CE's status is always SAG.
 * Tested with 6521_CLI; measurements seem to work.
 * Fixed other builds.
 *
 * Revision 1.7  2005/09/22 23:45:19  tvander
 * Clean build all models and unit tests, updated copyright to be fore Teridian
 *
 * Revision 1.6  2005/08/30 18:19:12  gmikef
 * *** empty log message ***
 *
 * Revision 1.5  2005/08/10 02:04:04  gmikef
 * *** empty log message ***
 *
 * Revision 1.4  2005/07/01 00:42:36  tvander
 * Redesigned the peak detect to use the voltage and current right from the CE, so no square root or RMS calculations are needed.
 *
 * Revision 1.3  2005/04/30 02:14:44  gmikef
 * *** empty log message ***
 *
 * Revision 1.4  2005/04/27 21:38:09  gmikef
 * *** empty log message ***
 *
 * Copyright (C) 2005 Teridian Semiconductor Corp. All Rights Reserved.    *
 * this program is fully protected by the United States copyright          *
 * laws and is the property of Teridian Semiconductor Corporation.         *
 ***************************************************************************/
/* peak_alerts.c */