Software/Embedded_SW/Embedded/Drivers/ADC_Sampling/ADC.c


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<// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;
using System.Windows.Media;
using Tango.Scripting.Editors.Document;

namespace Tango.Scripting.Editors.Snippets
{
	/// <summary>
	/// Represents an active element that allows the snippet to stay interactive after insertion.
	/// </summary>
	public interface IActiveElement
	{
		/// <summary>
		/// Called when the all snippet elements have been inserted.
		/// </summary>
		void OnInsertionCompleted();
		
		/// <summary>
		/// Called when the interactive mode is deactivated.
		/// </summary>
		void Deactivate(SnippetEventArgs e);
		
		/// <summary>
		/// Gets whether this element is editable (the user will be able to select it with Tab).
		/// </summary>
		bool IsEditable { get; }
		
		/// <summary>
		/// Gets the segment associated with this element. May be null.
		/// </summary>
		ISegment Segment { get; }
	}
}
//*****************************************************************************
//
// This is the data acquisition module.  It performs acquisition of data from
// selected channels, starting and stopping data logging, storing acquired
// data, and running the strip chart display.
//
//*****************************************************************************
/*
Notes:
    12 shared analog input channels
    12-bit precision ADC
    Hardware averaging of up to 64 samples
    As referred before the ADC has a  reference of 3V.

    Voltage reference selected using the VREF field in the ADCCTL register (page 1217)

    J0062
            PIN 21  - AN_IDS_PRESSENS_7
            PIN 9   - GND

    J0252
            PIN 21  - AN_IDS_PRESSENS_1
            PIN 9   - GND

    J0042
            PIN 21  - AN_IDS_PRESSENS_3
            PIN 9   - GND

    J0251
            PIN 21  - AN_IDS_PRESSENS_4
            PIN 9   - GND

                J0262
            PIN 21  - AN_IDS_PRESSENS_6
            PIN 9   - GND
                        J0162
            PIN 21  - AN_IDS_PRESSENS_5
            PIN 9   - GND

-----------------
void ADCAcquireInit(void) // (MillisecInit) ok

void ADCAcquireStart(ProcessCallback _callback, uint32_t _period)// (called by MillisecStart)

//reading Trigger
uint32_t ADC_TriggerCollection(void) // MillisecLoop
//Data Get
void ADC0SS0Handler(void)

each ADC there are 4 sequencers with combined sequence steps of 17 (8+4+4+1).
Hence out of 24 channels any 17 can be mapped.
If all channels are required then both ADC's are required (unless dynamic changes are being sought after).
//----------------------------------------------------


uint32_t ADC_GetReading(int DataItemId)// ADC Data get for a single data read

Void ADCProcessTask(UArg arg0, UArg arg1)

void ADCAcquireStop(void) //MillisecStop

//---------------------------------


        for (adc_i = 0; adc_i < MAX_ADC_DEVICES ; adc_i++)
            ADC_Data[adc_i] = ADC_GetReading(adc_i);
*/


#include "include.h"
#include <stdbool.h>

#include <ti/sysbios/BIOS.h>
#include <ti/sysbios/knl/Clock.h>
#include <ti/sysbios/knl/Semaphore.h>

#include <driverlib/adc.h>
#include <driverlib/rom_map.h>
#include <driverlib/interrupt.h>

#include "drivers/I2C_Communication/ADC_MUX/ADC_MUX.h"
#include "ADC.h"
#include <inc/hw_memmap.h>
#include <inc/hw_ints.h>

//*****************************************************************************
//
// The following defines which ADC channel control should be used for each
// kind of data item.  Basically it maps how the ADC channels are connected
// on the board.  This is a hardware pinmap configuration.
// Physical ADC connected channels in the TIVA
//*****************************************************************************

#define CHAN_AIR_PRESSURE_1         ADC_CTL_CH0
#define CHAN_AIR_PRESSURE_2         ADC_CTL_CH1
#define CHAN_DISPENSE_PRESSURE_1    ADC_CTL_CH2
#define CHAN_DISPENSE_PRESSURE_2    ADC_CTL_CH3
#define CHAN_DISPENSE_PRESSURE_3    ADC_CTL_CH4
#define CHAN_DISPENSE_PRESSURE_4    ADC_CTL_CH5
#define CHAN_DISPENSE_PRESSURE_5    ADC_CTL_CH6
#define CHAN_DISPENSE_PRESSURE_6    ADC_CTL_CH7
#define CHAN_DISPENSE_PRESSURE_7    ADC_CTL_CH8
#define CHAN_DISPENSE_PRESSURE_8    ADC_CTL_CH9
#define CHAN_VOCSENS                ADC_CTL_CH10
#define CHAN_SPARE1                 ADC_CTL_CH11
#define CHAN_SPARE2                 ADC_CTL_CH12
#define CHAN_LEFT_DANCER_1          ADC_CTL_CH13
#define CHAN_LEFT_DANCER_2          ADC_CTL_CH14
#define CHAN_RIGHT_DANCER           ADC_CTL_CH15
#define CHAN_DRYER_CURRENT_2        ADC_CTL_CH16 //Dryer  Heater 2
#define CHAN_DRYER_CURRENT_1        ADC_CTL_CH17 //Dryer  Heater 1
#define CHAN_DRYER_CURRENT_3        ADC_CTL_CH18
#define CHAN_3V3_FPGA               ADC_CTL_CH19
/*
Connected with pull down to reg GND ADC_CTL_CH20
Connected with pull down to reg GND ADC_CTL_CH21
config as digital input from FPGA 3 ADC_CTL_CH22
config as Digital input from FPGA 3 ADC_CTL_CH23
*/

//*****************************************************************************
//
// The following maps the order that items are acquired and stored by the
// ADC sequencers.  Note that 16 samples are specified, using 2 of the
// 8 sample sequencers.  The current is sampled multiple times deliberately
// because that value tends to bounce around.  It is sampled multiple
// times and will be averaged.
//
//*****************************************************************************


uint32_t g_pui32ADCSeq[ADC_MAX_ADC_DEVICES] =
{
 CHAN_AIR_PRESSURE_1,      //0
 CHAN_AIR_PRESSURE_2,      //1
 CHAN_DISPENSE_PRESSURE_1, //2      J0252 ,PIN 21  - AN_IDS_PRESSENS_1, PIN 9   - GND
 CHAN_DISPENSE_PRESSURE_2, //3      J0142 ,PIN 21  - AN_IDS_PRESSENS_2, PIN 9   - GND
 CHAN_DISPENSE_PRESSURE_3, //4      J0042 ,PIN 21  - AN_IDS_PRESSENS_3, PIN 9   - GND
 CHAN_DISPENSE_PRESSURE_4, //5      J0152 ,PIN 21  - AN_IDS_PRESSENS_4, PIN 9   - GND
 CHAN_DISPENSE_PRESSURE_5, //6      J0162 ,PIN 21  - AN_IDS_PRESSENS_5, PIN 9   - GND
 CHAN_DISPENSE_PRESSURE_6, //7      J0262 ,PIN 21  - AN_IDS_PRESSENS_6, PIN 9   - GND
 CHAN_DISPENSE_PRESSURE_7, //8      J0062 ,PIN 21  - AN_IDS_PRESSENS_7, PIN 9   - GND
 CHAN_DISPENSE_PRESSURE_8, //9      J0052 ,PIN 21  - AN_IDS_PRESSENS_8, PIN 9   - GND
 CHAN_VOCSENS,             //10     J0072 ,PIN 21  - AN_VOCSENS, PIN  9   - GND
 CHAN_SPARE1,              //11
 CHAN_SPARE2,              //12
 CHAN_LEFT_DANCER_1,       //13      J0002 ,PIN 21  - AN5V_LDANCER1, PIN  9   - GND
 CHAN_LEFT_DANCER_2,       //14      J0002 ,PIN 22  - AN5V_LDANCER1, PIN 10   - GND
 CHAN_RIGHT_DANCER,        //15      J0102 ,PIN 21  - AN5V_RDANCER, PIN 9   - GND
 CHAN_DRYER_CURRENT_1,     //16      J1292 ,PIN 7  - AN_DRYER_CURSEN_1p, PIN 19   - AN_DRYER_CURSEN_1n
 CHAN_DRYER_CURRENT_2,     //17      J1292 ,PIN 8  - AN_DRYER_CURSEN_1p, PIN 20   - AN_DRYER_CURSEN_1n
 CHAN_DRYER_CURRENT_3,     //18      J1292 ,PIN 9  - AN_DRYER_CURSEN_1p, PIN 21   - AN_DRYER_CURSEN_1n
 CHAN_3V3_FPGA,            //19
};

//#define NUM_ADC_CHANNELS        (sizeof(g_pui32ADCSeq) /                      \
                                 sizeof(g_pui32ADCSeq[0]))
int DispenserIdToPressureSensorId[MAX_DISPENSERS] = {ADC_DISPENSE_PRESSURE_1, ADC_DISPENSE_PRESSURE_2 , ADC_DISPENSE_PRESSURE_3 , ADC_DISPENSE_PRESSURE_4 , ADC_DISPENSE_PRESSURE_5 , ADC_DISPENSE_PRESSURE_6 , ADC_DISPENSE_PRESSURE_7 , ADC_DISPENSE_PRESSURE_8 };

//const uint8_t Num_ADC_Channels = ( sizeof(g_pui32ADCSeq) / sizeof(g_pui32ADCSeq[0]) );

//#define SAMPLE_ARRAY_SIZE (NUM_ADC_CHANNELS + I2C_NUM_OF_CHANNELS)
//#define SAMPLE_ARRAY_SIZE NUM_ADC_CHANNELS


static bool isInitialized = false;
static bool adcCollectActive = false;
static int bufferFlipFlop = 0;

//*****************************************************************************
//
// Global _storage for most recent sampled Sensor Data
//
//*****************************************************************************
//
// A buffer to hold one set of ADC data that is acquired per sample time.
//
//*****************************************************************************
static uint32_t g_pui32ADCData[DOUBLE_BUFFER][ADC_MAX_ADC_DEVICES];

//*****************************************************************************
//configured in the cfg file and thats why should be defined as extern
//*****************************************************************************
extern Semaphore_Handle adcResultSem;

static ProcessCallback processCallBack;

//*****************************************************************************
// ADCClockHandle: clock event handler - initiates trigger for the adc sampaling
//*****************************************************************************
// This function starts an ADC Conversion.
//static void ADCClockHandle(UArg arg0)
uint32_t ADC_TriggerCollection(void) // (called by MillisecLoop)
{
    //
    // Kick off the next ADC acquisition.  When these are done they will
    // cause an ADC interrupt.
    //
    if (adcCollectActive == true)
    {
        MAP_ADCProcessorTrigger(ADC1_BASE, 0);
        MAP_ADCProcessorTrigger(ADC0_BASE, 0);
        MAP_ADCProcessorTrigger(ADC0_BASE, 1);
    }
    return 0;
}
//*****************************************************************************
//
// ADC Data get for a single data read
//
//*****************************************************************************
uint32_t ADC_GetReading(ADC_TYPE DataItemId) // 0 - 19  // ADC Data get for a single data read
{
    int bufnotinuse;
    assert (DataItemId<ADC_MAX_ADC_DEVICES);

    if (bufferFlipFlop == 0)  bufnotinuse = 1;
    else  bufnotinuse = 0;
    return (g_pui32ADCData[bufnotinuse][DataItemId]);


}

//*****************************************************************************
//
// This is the handler for the ADC interrupt.  Even though more than one
// sequencer is used, they are configured so that this one runs last.
// Therefor when this ADC sequencer interrupt occurs, we know all of the ADC
// data has been acquired.
//
//*****************************************************************************
void ADC0SS0Handler(void)
{
    //
    // Clear the interrupts for all ADC sequencers that are used.
    //
    MAP_ADCIntClear(ADC0_BASE, 0);
    MAP_ADCIntClear(ADC1_BASE, 0);
    MAP_ADCIntClear(ADC0_BASE, 1);

    if (bufferFlipFlop == 0)  bufferFlipFlop = 1;
    else  bufferFlipFlop = 0;
    //
    // Retrieve the data from all ADC sequencers
    //
    MAP_ADCSequenceDataGet(ADC0_BASE, 0, &g_pui32ADCData[bufferFlipFlop][0]);
    //offset in the array calculated as sampling of 16 channels each one of 16 bits
    MAP_ADCSequenceDataGet(ADC1_BASE, 0, &g_pui32ADCData[bufferFlipFlop][8]);
    MAP_ADCSequenceDataGet(ADC0_BASE, 1, &g_pui32ADCData[bufferFlipFlop][16]);
    //
    // Release adc result semaphore
    //
    //the ADC Process task is mot currently active. the results will be copied to a second buffer and supplied upon request
	//Semaphore_post(adcResultSem);
}

//*****************************************************************************
//
//*****************************************************************************
Void ADCProcessTask(UArg arg0, UArg arg1)
{
	while(1)
	{
		//
		// Wait until new ADC data is available
		//
		Semaphore_pend(adcResultSem, BIOS_WAIT_FOREVER);

		//
		// Process the ADC data
		//
		if (processCallBack != NULL)
		{
			processCallBack(g_pui32ADCData[bufferFlipFlop]);
		}
	}
}


void ADCAcquireInit(void) // (called by MillisecInit)
{
    uint32_t ui32Chan, ui32Base, ui32Seq;
#ifndef EVALUATION_BOARD

    //Avaraging 8 //TODO
    //MAP_ADCHardwareOversampleConfigure(ADC0_BASE, 8);
    //MAP_ADCHardwareOversampleConfigure(ADC1_BASE, 8);
    //
    // Initialize both ADC peripherals using sequencer 0 and processor trigger.
    //
    MAP_ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_PROCESSOR, 0);
    MAP_ADCSequenceConfigure(ADC1_BASE, 0, ADC_TRIGGER_PROCESSOR, 0);
    MAP_ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_PROCESSOR, 1); //sequencer 1

    ADCSequenceDisable(ADC0_BASE, 1);

    //
    // Enter loop to configure all of the ADC sequencer steps needed to
    // acquire the data for the data logger.  Multiple ADC and sequencers
    // will be used in order to acquire all the channels.
    //
    for(ui32Chan = 0; ui32Chan < ADC_MAX_ADC_DEVICES; ui32Chan++)
    {
        //
        // If this is the first ADC then set the base for ADC0
        //
        if(ui32Chan < 8)
        {
            ui32Base = ADC0_BASE;
            ui32Seq = 0;
        }
        else if(ui32Chan < 16)
        {
            //
            // Second ADC, set the base for ADC1
            //
            ui32Base = ADC1_BASE;
            ui32Seq = 0;
        }
        else
        {
            ui32Base = ADC0_BASE;
            ui32Seq = 1;
        }


        //
        // Get the channel control for each channel.  Test to see if it is the
        // last channel for the sequencer, and if so then also set the
        // interrupt and "end" flags.
        //
        uint32_t ui32ChCtl = g_pui32ADCSeq[ui32Chan];
        //TODO define all the numbers under #define and not here
        if((ui32Chan == 7) || (ui32Chan == 15)  || (ui32Chan == (ADC_MAX_ADC_DEVICES - 1)))
        {
            ui32ChCtl |= ADC_CTL_IE | ADC_CTL_END;
        }

        //
        // Configure the sequence step
        //
        MAP_ADCSequenceStepConfigure(ui32Base, ui32Seq, ui32Chan % 8, ui32ChCtl);
    }

    ADCSequenceEnable(ADC0_BASE, 1);

    ADCReferenceSet(ADC0_BASE, ADC_REF_EXT_3V);
    ADCReferenceSet(ADC1_BASE, ADC_REF_EXT_3V);

    if (!isInitialized)
    {
        // Create a periodic Clock Instance with _period - triggers the ADC sampling
        isInitialized = true;

        //InitI2C();
    }
#endif
}

//*****************************************************************************
//
// This function is called to start an acquisition running.  It determines
// which channels are to be logged, enables the ADC/I2C sequencers.
// This will start the acquisition running.
//
//*****************************************************************************
void ADCAcquireStart(ProcessCallback _callback, uint32_t _period) // (called by MillisecStart)
{
#ifndef EVALUATION_BOARD
    //
    // Enable the ADC sequencers
    //
    MAP_ADCSequenceEnable(ADC0_BASE, 0);
    MAP_ADCSequenceEnable(ADC1_BASE, 0);
    MAP_ADCSequenceEnable(ADC0_BASE, 1);

    //
    // Flush the ADC sequencers to be sure there is no lingering/ trush data.
    //
    MAP_ADCSequenceDataGet(ADC0_BASE, 0, g_pui32ADCData[0]);
    MAP_ADCSequenceDataGet(ADC1_BASE, 0, g_pui32ADCData[0]);
    MAP_ADCSequenceDataGet(ADC1_BASE, 1, g_pui32ADCData[0]);

    //
    // Enable ADC interrupts
    //
    MAP_ADCIntClear(ADC0_BASE, 0);
    MAP_ADCIntClear(ADC1_BASE, 0);
    MAP_ADCIntEnable(ADC0_BASE, 0);
    MAP_ADCIntEnable(ADC0_BASE, 1);
    ROM_IntEnable(INT_ADC0SS0);

    // Store process
    processCallBack = _callback;
    // Start a periodic Clock Instance with _period - triggers the ADC sampling
    adcCollectActive = true;
    //
    // Logging data should now start running
    //
#endif
}

//*****************************************************************************
//
// This function is called to stop an acquisition running.  It disables the
// ADC sequencers.
//
//*****************************************************************************
void ADCAcquireStop(void)
{
	//Stop trigger adc sampling
	adcCollectActive = false;
    //
    // Disable ADC interrupts
    //
    MAP_IntDisable(INT_ADC0SS0);
    MAP_IntDisable(INT_ADC1SS0);

    //
    // Disable ADC sequencers
    //
    MAP_ADCSequenceDisable(ADC0_BASE, 0);
    MAP_ADCSequenceDisable(ADC1_BASE, 0);
    MAP_ADCSequenceDisable(ADC0_BASE, 1);
}

double  Calculate_Pitot_Pressure() // WHS - AN_AIRPRESS_1
{
    //MPXV7002 (NXP)
    uint32_t VsampleInBits;

    double Pressure = 0.0, temp, PKpa,PBar,VADC = 0.0 ,VSensor,PMicroBar;

    VsampleInBits = ADC_GetReading(ADC_AIR_PRESSURE_1);

    //---- VBits -> VADC ----

    //ADC 12 bit -> 4096 -> 2.5V

    temp = VsampleInBits*2.5;
    VADC =  temp / 4096;

    //---- VADC -> VSensor ---

    //VADC = 1.96 - 10k( VSensor - 1.96) / 46.4k (from the electrical scheme)
    // VSensor = 0 V  -> VADC = 2.3824 V
    // VSensor = 10 V -> VADC = 0.2272 V

    VSensor = (1.96- VADC) * 4.64 + 1.96;

    PKpa = 5 * VSensor;
        // ---- P[Kpa] -> BAR ----

    PBar = PKpa / 100.0;

    PMicroBar = PBar/1000;
    Pressure = PMicroBar;

    return Pressure;
}

uint8_t  Calculate_Gas_Power_Consumption() // WHS
{
    // TGS 2602 (FIGARO)


/*       Concentrtion  Sensor
            [ppm]      [v]
              0      0.353
             18      0.438
             33      2.919
            100      4.196
            316      4.571
*/

    double VOC_Vsensor[]  =
    {
        0.353, //0  PPM
        0.357, //1  PPM
        0.362, //2  PPM
        0.367, //3  PPM
        0.371, //4  PPM
        0.376, //5  PPM
        0.381, //6  PPM
        0.386, //7  PPM
        0.390, //8  PPM
        0.395, //9  PPM
        0.400, //10 PPM
        0.404, //11 PPM
        0.409, //12 PPM
        0.414, //13 PPM
        0.419, //14 PPM
        0.423, //15 PPM
        0.428, //16 PPM
        0.433, //17 PPM
        0.438, //18 PPM
        0.603, //19 PPM
        0.768, //20 PPM
        0.934, //21 PPM
        1.099, //22 PPM
        1.265, //23 PPM
        1.430, //24 PPM
        1.595, //25 PPM
        1.761, //26 PPM
        1.926, //27 PPM
        2.092, //28 PPM
        2.257, //29 PPM
        2.422, //30 PPM
        2.588, //31 PPM
        2.753, //32 PPM
        2.919  //33 PPM
    };

    uint32_t VsampleInBits;

    double temp, VADC = 0.0 ,VSensor;

    uint8_t PPM = sizeof(VOC_Vsensor) / sizeof(VOC_Vsensor[0]), i;

    VsampleInBits = ADC_GetReading(ADC_VOCSENS);

    //---- VBits -> VADC ----

    //ADC 12 bit -> 4096 -> 2.5V

    temp = VsampleInBits*2.5;
    VADC =  temp / 4096;

    //---- VADC -> VSensor ---

    //VADC = 1.96 - 10k( VSensor - 1.96) / 46.4k (from the electrical scheme)
    // VSensor = 0 V  -> VADC = 2.3824 V
    // VSensor = 10 V -> VADC = 0.2272 V

    VSensor = (1.96- VADC) * 4.64 + 1.96;

    for(i=0;i<PPM;i++)
    {
        if(VSensor <= VOC_Vsensor[i])
        {
            return i;//PPM
        }
    }

return 0xFF;//out of scale

}

uint32_t Read_Dryer_Heaters_Current(HEATERS_CURRENT Heater_ID) //
{

    /*
     * On Dryer have two heaters , 4*220w and 2*220w that work on 220Vac.

        Current transformer convert (thru resistor ) the Current of load to Voltage then convert from RMS to DC and connect to A2D pin of Tiva.
        A2D is 12 bits and his reference is 3.3V (VDDA) or 3V(VREFA+) (depend on s/w).
        I=A2D bits *K *VREF *N /(4096*R)
        Where :                K= K factor of transformer (less than 1 )
                                      VREF 3 or 3.3v depended of s/w
                                      N turns ratio (800 in our case )


                 Heater_No.  Heater_SSR   Resistor  Power   Current   AIN#
        Heater_1    4         SSR_1        50 ohm    880W     8A       17
        Heater_2    2         SSR_2        100 ohm   440W     4A       16
     *
     */
    uint32_t Status = OK;

    uint32_t temp = 0;

    uint32_t Vref = 3; // External 3V reference using - ADC_REF_EXT_3V

    uint8_t K = 95; //0.95; //See graph in data sheet of CTL-6
    uint32_t N = 800; //See data sheet of CTL-6
    uint8_t R; //


    if (Heaters_Current_Read_Enable[Heater_ID] == false)
        return Heaters_Current[Heater_ID];

    switch(Heater_ID)
    {
        case HEATER_DRYER_CURRENT_1:
                temp = ADC_GetReading(ADC_DRYER_CURRENT_1);//ADC_CTL_CH17
                R = 50;//50 Ohm
                //Expected 8A
            break;
        case HEATER_DRYER_CURRENT_2:
                temp = ADC_GetReading(ADC_DRYER_CURRENT_2);//ADC_CTL_CH16
                R = 100;//100 Ohm
                //Expected 4A
            break;
//        case DRYER_CURRENT_3:
//                temp = ADC_GetReading(ADC_DRYER_CURRENT_3);//Not in use
//            break;
        default:
                return ERROR;
            //break;
    }

    Heaters_Current_Bits[Heater_ID] = temp;

    Heaters_Current[Heater_ID] = (temp * K/100 * Vref * N) / (4096 * R);// [Amper]

    return Status;

}