Dscad.c File Reference

DMM procedures. More...

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <math.h>
#include "mgui.h"
#include "DAS_Spatram.h"
#include "dscud.h"

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Macros
#define	ERROR_PREFIX   "DMM Driver ERROR:"

Functions
int	D_InitPC104 (void)
	Starting function that calls the driver functions used NOTE: By convention, you should capture the BYTE return value for each driver API call, and check the error code. I. Driver Initialization II. Board Initialization III. AD Settings. More...
void	D_readtemp_int (void)
void	D_rt (void)
	D_readtemp_int callback . More...
void	DSCAD_Error (char *err, int w)

Variables
DSCADSCAN	dscadscan
DSCADSETTINGS	dscadsettings
DSCAIOINT	dscaioint
DSCB	dscb
DSCCB	dsccb
DSCS	dscs
ERRPARAMS	errorParams
int	Incr_Read_Temp
omuthr	OMUTHR
BYTE	result
WORD *	samples
double	voltage

Detailed Description

DMM procedures.

Author

Diamond Systems Corporation modified by Danbo

Definition in file Dscad.c.

Macro Definition Documentation

ERROR_PREFIX

#define ERROR_PREFIX   "DMM Driver ERROR:"

Definition at line 21 of file Dscad.c.

Function Documentation

D_InitPC104()

int D_InitPC104

(

void

)

Starting function that calls the driver functions used NOTE: By convention, you should capture the BYTE return value for each driver API call, and check the error code. I. Driver Initialization II. Board Initialization III. AD Settings.

Definition at line 120 of file Dscad.c.

Referenced by D_readtemp_int(), and InitTempAD().

{
    //=========================================================================
    // I. DRIVER INITIALIZATION
    //
    //    Initializes the DSCUD library.
    //
    //    Initialize the driver, using the driver version for validation
    //=========================================================================

    if( dscInit( DSC_VERSION ) != DE_NONE )
    {
        dscGetLastError(&errorParams);
        DSCAD_Error(errorParams.errstring, 2);
        return 1;
    }

    //=========================================================================
    // II. BOARD INITIALIZATION
    //
    //     Initialize the DMM board. This function passes the various
    //     hardware parameters to the driver and resets the hardware.
    //
    //=========================================================================

    dsccb.boardtype = DSC_DMM;
    dsccb.base_address = 0x300;
    dsccb.int_level = 3;
    dsccb.dma_level = 3;
    dsccb.clock_freq = 1000000;

    if(dscInitBoard(DSC_DMM, &dsccb, &dscb)!= DE_NONE)
    {
        dscGetLastError(&errorParams);
        DSCAD_Error(errorParams.errstring, 2);
        return 1;
    }

    //=========================================================================
    // III. AD SETTINGS INITIALIZATION
    //
    //      Initialize the structure containing the AD conversion settings and
    //      then pass it to the driver.
    //
    //=========================================================================

    // PRE-FILLED EXAMPLE
    dscadsettings.range = RANGE_5;
    dscadsettings.polarity = UNIPOLAR;
    dscadsettings.gain = GAIN_1;
    dscadsettings.load_cal = (BYTE)TRUE;
    dscadsettings.current_channel = 0;

    if( ( result = dscADSetSettings( dscb, &dscadsettings ) ) != DE_NONE )
    {
        dscGetLastError(&errorParams);
        DSCAD_Error(errorParams.errstring, 2);
        return 2;
    }

    //=========================================================================
    // IV. AD SCAN INITIALIZATION
    //
    //     Initialize the structure containing the AD scan setting and allocate
    //     memory for our buffer containing sample values.
    //
    //=========================================================================

    // PRE-FILLED EXAMPLE
    dscadscan.low_channel = 0;
    dscadscan.high_channel = 15;
    dscadscan.gain = dscadsettings.gain;
    
    samples = (WORD*)malloc( sizeof( WORD ) * ( dscadscan.high_channel - dscadscan.low_channel + 1 ) );
    
    return 0;

} 

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D_readtemp_int()

void D_readtemp_int

(

void

)

Definition at line 71 of file Dscad.c.

References omuthr::ADVolt, DSCCB::base_address, BIPOLAR, DSCCB::boardtype, BYTE, DSCCB::clock_freq, DSCADSETTINGS::current_channel, D_InitPC104(), DE_NONE, DSCCB::dma_level, DSC_DMM, DSC_VERSION, DSCAD_Error(), dscADScan(), dscADSetSettings(), dscb, dscGetLastError(), dscInit(), dscInitBoard(), ERRPARAMS::errstring, DSCADSETTINGS::gain, DSCADSCAN::gain, GAIN_1, DSCADSCAN::high_channel, DSCCB::int_level, DSCADSETTINGS::load_cal, DSCADSCAN::low_channel, DSCADSETTINGS::polarity, DSCADSETTINGS::range, RANGE_10, RANGE_5, result, DSCADSCAN::sample_values, samples, TRUE, UNIPOLAR, voltage, and WORD.

Referenced by D_rt().

{

    int i;
//=========================================================================
// V. SCANNING AND OUTPUT
//
//    Perform the actual sampling and then output the results. To calculate
//    the actual input voltages, we must convert the sample code (which
//    must be cast to a short to get the correct code) and then plug it
//    into one of the formulas located in the manual for your board (under
//    "A/D Conversion Formulas"). 
    //=========================================================================


    if( ( result = dscADScan( dscb, &dscadscan, samples ) ) != DE_NONE )
    {
//          fprintf( stderr, "%s%s\n", ERROR_PREFIX, dscGetErrorString( result ) );
//          free( samples ); // remember to deallocate malloc() memory
//          return;
    }

    for( i = dscadscan.low_channel; i < dscadscan.high_channel + 1; i++)
    {
            if( dscadsettings.range == RANGE_10 && dscadsettings.polarity == BIPOLAR)
            {
                voltage = ((short)dscadscan.sample_values[i] / 2048.0 * 10.0) - 10.0;
            }
            else if( dscadsettings.range == RANGE_5 && dscadsettings.polarity == BIPOLAR )
            {
                voltage = ((short)dscadscan.sample_values[i] / 2048.0 * 5.0 ) - 5.0;
            }
            else if( dscadsettings.range == RANGE_5 && dscadsettings.polarity == UNIPOLAR )
                voltage = ( (short)dscadscan.sample_values[i] / 4096.0) * 5.0;
            else voltage = ( (short)dscadscan.sample_values[i] / 4096.0) * 10.0;

            OMUTHR.ADVolt[i] = (voltage / pow(2, dscadsettings.gain));
    }
}

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D_rt()

void D_rt

(

void

)

D_readtemp_int callback
.

Starting function that calls the driver functions used
.

Returns

er:

• 0 = initialization succesfully concluded
• 1 = problems in driver initialization
• 2 = problems in hardware initialization

Definition at line 64 of file Dscad.c.

References D_readtemp_int().

Referenced by D_readtemp().

{

    D_readtemp_int();

}

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DSCAD_Error()

void DSCAD_Error	(	char *	err,
		int	w
	)

Definition at line 48 of file Dscad.c.

References palette::DB_BG, palette::DB_BG_Albl, palette::DB_FG_Albl, DPAL, HELV_SMALL, lbl, MCreateLabel(), MCreateShell(), MObjectSetBackgroundRGB(), MObjectSetForegroundRGB(), MObjectSetShadow(), MShellRealize(), and WS_SHADOW_OUT.

Referenced by D_readtemp_int().

{
    MOBJECT sh, lbl;
    char buf[64];
    sh = MCreateShell("AD Error", 0);
    MObjectSetBackgroundRGB(sh, DPAL.DB_BG[0], DPAL.DB_BG[1], DPAL.DB_BG[2]);
    
    sprintf(buf, "%d ) %s",w, err);
    lbl = MCreateLabel(sh, buf, HELV_SMALL);
    MObjectSetBackgroundRGB(lbl, DPAL.DB_BG_Albl[0], DPAL.DB_BG_Albl[1], DPAL.DB_BG_Albl[2]);
    MObjectSetForegroundRGB(lbl, DPAL.DB_FG_Albl[0], DPAL.DB_FG_Albl[1], DPAL.DB_FG_Albl[2]);
    MObjectSetShadow(lbl, WS_SHADOW_OUT, 1, 0);
    MShellRealize(sh);
}

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Variable Documentation

dscadscan

DSCADSCAN dscadscan

Definition at line 34 of file Dscad.c.

dscadsettings

DSCADSETTINGS dscadsettings

Definition at line 33 of file Dscad.c.

dscaioint

DSCAIOINT dscaioint

Definition at line 40 of file Dscad.c.

dscb

DSCB dscb

Definition at line 31 of file Dscad.c.

Referenced by D_readtemp_int(), and ShutCB().

dsccb

DSCCB dsccb

Definition at line 32 of file Dscad.c.

dscs

DSCS dscs

Definition at line 41 of file Dscad.c.

errorParams

ERRPARAMS errorParams

Definition at line 37 of file Dscad.c.

Incr_Read_Temp

int Incr_Read_Temp

Definition at line 101 of file DAS_Spat.c.

OMUTHR

omuthr OMUTHR

Definition at line 43 of file Dscad.c.

result

BYTE result

Definition at line 30 of file Dscad.c.

Referenced by D_readtemp_int(), and DB_FindChar().

samples

WORD* samples

Definition at line 35 of file Dscad.c.

Referenced by D_readtemp_int().

voltage

double voltage

Definition at line 36 of file Dscad.c.

Referenced by D_readtemp_int().