MSP430FR2633: Conversion of capacitance into counts

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//*****************************************************************************
// Development main.c for MSP430FR2633, MSP430FR2533, MSP430FR2632, and
// MSP430FR2532.
//
// This starter application initializes the CapTIvate touch library
// for the touch panel specified by CAPT_UserConfig.c/.h via a call to
// CAPT_appStart(), which initializes and calibrates all sensors in the
// application, and starts the CapTIvate interval timer.
//
// Then, the capacitive touch interface is driven by calling the CapTIvate
// application handler, CAPT_appHandler().  The application handler manages
// whether the user interface (UI) is running in full active scan mode, or
// in a low-power wake-on-proximity mode.
//
// The CapTIvate application handler will return true if proximity was
// detected on any of the sensors in the application, which is used here
// to control the state of LED2. LED1 is set while the background loop enters
// the handler, and is cleared when the background loop leaves the handler.
//
// \version 1.80.00.30
// Released on March 26, 2019
//
//*****************************************************************************

#include <msp430.h>                      // Generic MSP430 Device Include
#include "driverlib.h"                   // MSPWare Driver Library
#include "captivate.h"                   // CapTIvate Touch Software Library
#include "CAPT_App.h"                    // CapTIvate Application Code
#include "CAPT_BSP.h"                    // CapTIvate EVM Board Support Package

volatile uint16_t raw;
uint16_t* pRaw;
volatile uint16_t rawRefCap;

void CAPT_updateSensor_withRefCap(tSensor *pSensor, uint8_t ui8LPM, uint8_t ui8RefCap);
extern tElement BTN00_E00;

void main(void)
{

	//
	// Initialize the MCU
	// BSP_configureMCU() sets up the device IO and clocking
	// The global interrupt enable is set to allow peripherals
	// to wake the MCU.
	//
	WDTCTL = WDTPW | WDTHOLD;
	BSP_configureMCU();
	__bis_SR_register(GIE);

	//
	// Start the CapTIvate application
	//
    CAPT_initUI(&g_uiApp);

    CAPT_calibrateUI(&g_uiApp);

	CAPT_updateSensor(&BTN00, g_uiApp.ui8AppLPM);
	raw = BTN00_E00.pRawCount[0];

	CAPT_updateSensor_withRefCap(&BTN00, g_uiApp.ui8AppLPM,CAPT_REFERENCE_CAP__SELF_1P0PF);
	rawRefCap = BTN00_E00.pRawCount[0];

	while(1);

} // End main()

void CAPT_updateSensor_withRefCap(tSensor *pSensor, uint8_t ui8LPM, uint8_t ui8RefCap)
{
    uint8_t ui8Cycle = 0;
    uint8_t ui8SavedCntFilter;

    pSensor->bSensorUpdating = true;

    //
    // If count filter is disabled,
    // context save the current filter then
    // set to zero to workaround ROM fxn neglecting
    // the status of the enable bit
    //
    if (pSensor->bCountFilterEnable == false)
    {
        ui8SavedCntFilter = pSensor->ui8CntBeta;
        pSensor->ui8CntBeta = 0;
    }

    //
    // Load sensor parameters
    //
    MAP_CAPT_applySensorParams(pSensor);
    MAP_CAPT_applySensorFreq(CAPT_OSC_FREQ_DEFAULT,pSensor);

    //
    // Load first cycle and start the conversion
    //
    //A0272918
    MAP_CAPT_enableRefCap(pSensor->pCycle[ui8Cycle]->pElements[0], ui8RefCap);

    MAP_CAPT_loadCycle(pSensor, ui8Cycle, CAPT_OSC_FREQ_DEFAULT, true);
    MAP_CAPT_startConversion(&g_bEndOfConversionFlag);

    for(ui8Cycle=1; ui8Cycle < pSensor->ui8NrOfCycles;ui8Cycle++)
    {
        //
        // Wait for conversion to complete, then unload the previous cycle
        //
        MAP_CAPT_blockOnFlag(&g_bEndOfConversionFlag, ui8LPM);
        MAP_CAPT_unloadCycle(pSensor, ui8Cycle-1, 0, true);

        //A0272918
        MAP_CAPT_disableRefCap();

        //
        // Load next cycle and start the conversion
        //
        MAP_CAPT_loadCycle(pSensor, ui8Cycle, CAPT_OSC_FREQ_16MHZ, true);
        //A0272918
        MAP_CAPT_enableRefCap(pSensor->pCycle[ui8Cycle]->pElements[0], ui8RefCap);

        MAP_CAPT_startConversion(&g_bEndOfConversionFlag);

        //
        // Process previous cycle results
        //
        CAPT_processFSMCycle(pSensor,(tCycle *)pSensor->pCycle[ui8Cycle-1]);
    }

    //
    // Wait for conversion to complete, then unload the previous cycle
    //
    MAP_CAPT_blockOnFlag(&g_bEndOfConversionFlag, ui8LPM);
    MAP_CAPT_unloadCycle(pSensor, ui8Cycle-1, 0, true);

    //A0272918
    MAP_CAPT_disableRefCap();

    //
    // Cleanup
    //
    MAP_CAPT_cleanupAfterConversion();

    //
    // Process last Cycle
    //
    CAPT_processFSMCycle(pSensor,(tCycle *)pSensor->pCycle[ui8Cycle-1]);

    //
    // Process the sensor
    //
    CAPT_processSensor(pSensor);
    if (pSensor->pvCallback != NULL)
    {
        pSensor->pvCallback(pSensor);
    }

    //
    // Restore saved count filter for ROM fxn workaround
    //
    if (pSensor->bCountFilterEnable == false)
    {
        pSensor->ui8CntBeta = ui8SavedCntFilter;
    }

    pSensor->bSensorUpdating = false;
}