以YL-KL26Z开发板制作会讲故事的书——4

TSIDrv.c

#include "TSIDrv.h"

#include "includes.h"

INT8U total_electrode = TOTAL_ELECTRODE;

INT8U elec_array[16]={ELECTRODE0,ELECTRODE1,ELECTRODE2,ELECTRODE3,ELECTRODE4,ELECTRODE5,                        ELECTRODE6,ELECTRODE7,ELECTRODE8,ELECTRODE9,ELECTRODE10,ELECTRODE11,

                                ELECTRODE12,ELECTRODE13,ELECTRODE14,ELECTRODE15};

INT16U gu16TSICount[16];

INT16U gu16Baseline[16];

INT16U gu16Threshold[16]={THRESHOLD0,THRESHOLD1,THRESHOLD2,THRESHOLD3,THRESHOLD4,THRESHOLD5,

                                THRESHOLD6,THRESHOLD7,THRESHOLD8,THRESHOLD9,THRESHOLD10,THRESHOLD11,

                                THRESHOLD12,THRESHOLD13,THRESHOLD14,THRESHOLD15};

INT16U gu16Delta[16];

INT16U ongoing_elec;

INT8U end_flag = TRUE;

INT8U j;

INT8U SliderPercentegePosition[3] = {NO_TOUCH,NO_TOUCH,NO_TOUCH};

INT8U SliderDistancePosition[3] = {NO_TOUCH,NO_TOUCH,NO_TOUCH};

INT16U AbsolutePercentegePosition = NO_TOUCH;

INT16U AbsoluteDistancePosition = NO_TOUCH;

void TSI_Init (void)

{

  SIM_SCGC5 |= SIM_SCGC5_TSI_MASK;  // Enable clock gating for TSI

  /* Enable proper GPIO as TSI channels */

  PORTB_PCR16 = PORT_PCR_MUX(0);   // PTB16 as TSI channel 9

  PORTB_PCR17 =  PORT_PCR_MUX(0);  // PTB17 as TSI channel 10

  PORTC_PCR0 =  PORT_PCR_MUX(0);   // PTB17 as TSI channel 13

  NVIC_DisableIRQ((IRQn_Type)TSI0_IRQn);

   

  TSI0_GENCS |= (TSI_GENCS_ESOR_MASK

                   | TSI_GENCS_MODE(0)

                   | TSI_GENCS_REFCHRG(4)

                   | TSI_GENCS_DVOLT(0)

                   | TSI_GENCS_EXTCHRG(7)  

                   | TSI_GENCS_PS(4)

                   | TSI_GENCS_NSCN(11)

                   | TSI_GENCS_TSIIEN_MASK

                   | TSI_GENCS_STPE_MASK

                   //| TSI_GENCS_STM_MASK     //Trigger for the module 0=Sofware

                   );

  

  TSI0_GENCS |= TSI_GENCS_TSIEN_MASK;

  

  TSI_SelfCalibration();

}

void change_electrode(void)

{

    int16_t u16temp_delta;

   

    gu16TSICount[ongoing_elec] = (TSI0_DATA & TSI_DATA_TSICNT_MASK);          // Save Counts for current electrode

    u16temp_delta = gu16TSICount[ongoing_elec] - gu16Baseline[ongoing_elec];  // Obtains Counts Delta from callibration reference

    if( u16temp_delta < 0)

            gu16Delta[ongoing_elec] = 0;

    else

            gu16Delta[ongoing_elec] = u16temp_delta;

   

    if(total_electrode > 1)  //Change Electrode to Scan

    {

            if((total_electrode-1) > ongoing_elec) ongoing_elec++;

            else   ongoing_elec = 0;

            

            TSI0_DATA = ((elec_array[ongoing_elec]<<TSI_DATA_TSICH_SHIFT) );

            TSI0_DATA |= TSI_DATA_SWTS_MASK;

    }

}

void TSI_Slider_LED(void )

{

     if(end_flag)

      {   

        end_flag = FALSE;

        if((gu16Delta[0] > gu16Threshold[0])||(gu16Delta[1] > gu16Threshold[1])||(gu16Delta[2] > gu16Threshold[2]))

         {

           if((gu16Delta[0] > gu16Threshold[0]))      j=1;

           if((gu16Delta[1] > gu16Threshold[1]))      j=2;

           if((gu16Delta[2] > gu16Threshold[2]))      j=3;

              }

else

         {  j=6;

            SliderPercentegePosition[0] = NO_TOUCH;  

            SliderPercentegePosition[1] = NO_TOUCH;

            SliderPercentegePosition[2] = NO_TOUCH;

            SliderDistancePosition[0] = NO_TOUCH;

            SliderDistancePosition[1] = NO_TOUCH;

            SliderDistancePosition[2] = NO_TOUCH;

            AbsolutePercentegePosition = NO_TOUCH;

            AbsoluteDistancePosition = NO_TOUCH;

         }

      }

}     

void TSI0_IRQHandler(void)

{

  end_flag = TRUE;

  TSI0_GENCS |= TSI_GENCS_EOSF_MASK; // Clear End of Scan Flag

  change_electrode();

}