/*      タッチセンサー     2012/10/25  BY M.K
        CONFIG1   :$8007 : 0x3984      CONFIG2   :$8008 : 0x1613   [1603=OK]
        mikroC PRO V5.61   PIC12F1822
        RA0/1=入力   RA5/4=出力    8MHz OSC
        2012/10/30 Used Rom = 570  words
*/

unsigned int CPS_ave=0;           //平均値
unsigned int CPS_Ref[1];          //初期値
char         CPS_CH;              //チヤンネル

void interrupt(){
    if (INTCON.TMR0IF==1)         //Timer0
        INTCON.TMR0IF=0;
    if (PIR1.TMR1GIF==1)          //Timer1
        PIR1.TMR1GIF=0;
}

unsigned int CPS_sns()            //CP READ
{
        CPSCON1=CPS_CH;           //set of CPS_CH
        TMR1H=0;
        TMR1L=0;
        TMR0 =0;
        INTCON.GIE=1;
        T1GCON.T1GGO_NOT_DONE=1;
        while(T1GCON.T1GGO_NOT_DONE);
        INTCON.GIE=0;
        return TMR1L;
}

unsigned int CPS_avsns()
{
    char i;
        if(CPS_CH==0){              // CH=0
           TRISA0_bit=1;
           TRISA1_bit=0;
           AN0_bit=1;               //ANSELA0
           AN1_bit=0;
        }
        else {
           TRISA0_bit=0;            //CH=1
           TRISA1_bit=1;
           AN0_bit=0;
           AN1_bit=1;
        }
        CPS_ave = 0;
        for(i=0;i<16;i++){
            CPS_ave += CPS_sns();
        }
        return (CPS_ave/16);
}

char sw_f()                       // TSW ON?
{
        if(CPS_avsns() < CPS_Ref[CPS_CH])
            return 1;
        else
            return 0;
}

void main()
{
      OSCCON=0xF0;                // 8MHz
      ANSELA=0b00000011;
      TRISA =0b00000011;
      PORTA=0;
      OPTION_REG=0b11000100;      //TMR0 8MHz*4*256*32=4096uS
      T1CON =0b11000101;          //TMR1 Pre=0
      T1GCON=0b11111001;
      CPSCON0=0b10001100;         // CPS-MODULE low 18uA
      Delay_ms(1000);             // for CPS-MODULE
// Interrupt
      PIR1.TMR1GIF=0;             //Timer1
      PIE1.TMR1GIE=1;
      INTCON.TMR0IF=0;            //Timer0
      INTCON.TMR0IE=1;
      INTCON.PEIE=1;
      INTCON.GIE=0;
// set of References
      LATA5_bit=1;                // LED-ON
      CPS_CH=0;                   // 0ch
      CPS_Ref[CPS_CH]=CPS_avsns()*0.9;
      CPS_CH=1;                   // 1ch
      CPS_Ref[CPS_CH]=CPS_avsns()*0.9;
      Delay_ms(500);
      LATA5_bit=0;                //OFF
//
      while(1){
         CPS_CH=0;                //CH=0
           if (sw_f()==1)
              LATA5_bit=1;
           else
              LATA5_bit=0;
 //
         CPS_CH=1;                //CH=1
           if (sw_f()==1)
              LATA4_bit=1;
           else
              LATA4_bit=0;
      }
}