//******************************************************************************************
//  PIC12F1822 Sample Program 
//   Project      :
//   Program Name :
//   Programer    :
//   Create date  :  Version 1.0    H25.10.27
//   Replace date :
//   History      :
//   Laungage     :  HI_TECH PICC C Laungage Version 9.83
//******************************************************************************************
//   Description
//       OSC : Internal OSC 32MHz
//   Assign I/O pins
//       Ra2[O] : Audio output
//       Ra3[I] : MIC input
//       Ra4[O] : MIC clock
//       Ra5[O] : MIC R/L select  
//******************************************************************************************
#include	<htc.h>

__CONFIG(  FOSC_INTOSC & WDTE_OFF & PWRTE_OFF &  MCLRE_OFF & CP_OFF & CPD_OFF 
                       & BOREN_OFF & CLKOUTEN_OFF & IESO_OFF & FCMEN_OFF );
//__CONFIG(  FOSC_INTOSC & WDTE_OFF & PWRTE_OFF &  MCLRE_OFF & CP_OFF & CPD_OFF 
//                       & BOREN_OFF & CLKOUTEN_ON & IESO_OFF & FCMEN_OFF );
__CONFIG(  WRT_OFF & PLLEN_ON & STVREN_OFF & BORV_HI & LVP_OFF ) ;     
//__CONFIG(  WRT_OFF & PLLEN_OFF & STVREN_OFF & BORV_HI & LVP_OFF ) ;     


#define PI_NORMAL   0
#define PI_FAILER   1

void Init_RCM(void);

int main(void) {

// ********************************
//  1.Initialized
// ********************************
// (1)Define OSC (Internal OSC 32MHz)
//  OSCCON = 0b01111010;   //Internal OSC 16MHz
    OSCCON = 0b11110000;   //Internal OSC 32MHz

// (2)Define ANSELA (All Degital Port)
    ANSELA  = 0x00;
 
// (3)Define I/O PORT
    PORTA  = 0x00;
    TRISA  = 0b11011011;
 
// (4)Initialized REFERENCE CLOCK MODULE
    Init_RCM();

// ********************************
//  2.Program main
// ********************************
// (1)Select MIC
    PORTA = 0b00100000;

// (2)Main loop
    while(1){
        if((PORTA & 0b00001000)!=0) PORTA |= 0b00000100;
        else                        PORTA &= 0b11111011;
    }
}

//*******************************************************************************************
//   Function Name   : Init_RCM�@�@�@
//   Function        : Initialized REFERENCE CLOCK MODULE
//   Input           :
//   Output          :
//   Description     :  
//*******************************************************************************************
void Init_RCM(void)
{
// ******************************************
//  1.Define CLKRCON: REFERENCE CLOCK CONTROL REGISTER
//      CLKRCON[7] CLKREN: Reference Clock Module Enable bit
//          1 = Reference clock module is enabled
//          0 = Reference clock module is disabled
//      CLKRCON[6] CLKROE: Reference Clock Output Enable bit
//          1 = Reference clock output is enabled on CLKR pin
//          0 = Reference clock output disabled on CLKR pin
//      CLKRCON[5] CLKRSLR: Reference Clock Slew Rate Control limiting enable bit
//          1 = Slew rate limiting is enabled
//          0 = Slew rate limiting is disabled
//      CLKRCON[4-3] CLKRDC<1:0>: Reference Clock Duty Cycle bits
//         11 = Clock outputs duty cycle of 75%
//         10 = Clock outputs duty cycle of 50%
//         01 = Clock outputs duty cycle of 25%
//         00 = Clock outputs duty cycle of 0%
//      CLKRCON[2-0] CLKRDIV<2:0> Reference Clock Divider bits
//        111 = Base clock value divided by 128
//        110 = Base clock value divided by 64
//        101 = Base clock value divided by 32
//        100 = Base clock value divided by 16
//        011 = Base clock value divided by 8
//        010 = Base clock value divided by 4
//        001 = Base clock value divided by 2
//                   In this mode, the 25% and 75% duty cycle accuracy will be dependent on the source clock duty cycle.
//        000 = Base clock value
//                   In this mode, the duty cycle will always be equal to the source clock duty cycle, unless a duty cycle of 0% is selected.
// ******************************************
//  CLKRCON = 0b11010011;     //FOSC:16MHz ==>  CLKOUT:2MHz
    CLKRCON = 0b11010100;     //FOSC:32MHz ==>  CLKOUT:2MHz

}