//******************************************************************************************
//   dsPIC33FJ256GP506 Sample Program
//   Project      :
//   Program Name :
//   Programer    :
//   Create date  :  Version 1.0    H22.11.15
//   History      :
//   Laungage     :  MPLAB C30 
//******************************************************************************************
//  (1)Description
//      OSC: Internal OSC 7.37MHz * PLL ==> 79.23MHz
//******************************************************************************************

#include "string.h"
#include "stdio.h"
#include "ctype.h"
#include "math.h"
#include "stdlib.h"
#include "time.h"

#include "p33FJ256GP506.h"

//_FBS(RBS_NO_BOOT_RAM & BSS_NO_BOOT_CODE & BWRP_WRPROTECT_OFF);
//_FSS(RSS_NO_RAM & SSS_NO_SEC_CODE & SWRP_WRPROTECT_OFF);
//_FGS(GSS_OFF & GCP_OFF & GWRP_OFF );
//_FOSCSEL(FNOSC_FRC & IESO_OFF);
_FOSCSEL(FNOSC_FRCPLL & IESO_OFF);
_FOSC(FCKSM_CSECMD & OSCIOFNC_ON & POSCMD_NONE ); 
//_FWDT(FWDTEN_OFF & WINDIS_OFF & WDTPRE_PR32 & WDTPOST_PS1);
//_FPOR(FPWRT_PWR1);
//_FICD(BKBUG_ON & COE_ON & JTAGEN_ON & ICS_PGD1);
_FWDT(FWDTEN_OFF);  

#define PI 3.141592
#define MAX_DATA 1000
#define Range 0xFFFF/3

void Timer(void);

int main(void)
{
    unsigned int table_i[MAX_DATA +1];
    unsigned int lp;
    float  tmp_f;

// *******************
//  1.Initialize
// *******************
// (1)Define OSC 79.23MHz(7.37MHz/2*43(M43)/2)
    CLKDIV = 0b0000000000000000;
//  PLLFBD = 0x001E;   //M32
    PLLFBD = 0x0029;   //M43(M43-2=>0d41=>0x29)

// (2)Set All Digital Port  
    AD1PCFGL = 0xFFFF;
    AD1PCFGH = 0xFFFF;

// (3)Define PortB
    TRISB = 0x0000;
    PORTB = 0x0000;

// *******************
//  2.Program Main
// *******************
// (1)Set Initial Value
    for(lp=0;lp<MAX_DATA;lp++){
        tmp_f = (PI*2) / MAX_DATA * lp ;
        table_i[lp]=(sin(tmp_f) + 1)*Range;
    }

// (2)Put wave-data
    while(1){
        for(lp=0;lp<MAX_DATA;lp++){
            PORTB=table_i[lp];
            Timer();
        }    
    }
}

//******************************************************************************************
//   Function Name : Timer
//   Title         : TIMER function
//   Input         :
//   Output        :
//******************************************************************************************
void Timer(void)
{
// ***********************************************
// 1.Define T2CON Register
//    TxCON[15] TON: Timerx On bit
//        When T32 = 1:
//           1 = Starts 32-bit Timerx/y,  0 = Stops 32-bit Timerx/y
//        When T32 = 0:
//           1 = Starts 16-bit Timerx,    0 = Stops 16-bit Timerx
//    TxCON[14] Unimplemented: Read as �e0�f
//    TxCON[13] TSIDL: Stop in Idle Mode bit
//          1 = Discontinue module operation when device enters Idle mode
//          0 = Continue module operation in Idle mode
//    TxCON[12-7] Unimplemented: Read as �e0�f
//    TxCON[6] TGATE: Timerx Gated Time Accumulation Enable bit
//         When TCS = 1:  This bit is ignored.
//         When TCS = 0:
//            1 = Gated time accumulation enabled
//            0 = Gated time accumulation disabled
//    TxCON[5-4] TCKPS<1:0>: Timerx Input Clock Prescale Select bits
//           11 = 1:256
//           10 = 1:64
//           01 = 1:8
//           00 = 1:1
//    TxCON[3] T32: 32-bit Timer Mode Select bit(1)
//            1 = Timerx and Timery form a single 32-bit timer
//            0 = Timerx and Timery act as two 16-bit timers
//    TxCON[2] Unimplemented: Read as �e0�f
//    TxCON[1] TCS: Timerx Clock Source Select bit
//            1 = External clock from pin TxCK (on the rising edge)
//            0 = Internal clock (FCY)
//    TxCON[0] Unimplemented: Read as �e0�f
// ***********************************************
//  T2CON = 0b1000000000100000;  //  Prescaler 1/64, 16Bit 
//  T2CON = 0b1000000000110000;  //  Prescaler 1/256,16Bit 
    T2CON = 0b1000000000000000;  //  Prescaler 1/1,  16Bit 

// ***********************************************
// 2.Set PR2-Register
// ***********************************************
//  PR2 = 0x186A;  // 10Hz  (0x186a;0d6250)   //FRC    8MHz     8MHz/2/64/10
//  PR2 = 0x167D;  // 10Hz  (0x167D;0d5758)   //FRC    7.37MHz  7.37MHz/2/64/10
//  PR2 = 0x3C72;  // 10Hz  (0x3C72;0d15474)  //FRC    79.23MHz 79.23MHz/2/256/10
    PR2 = 0x0318;  // 50KHz (0x0318;0d792)    //FRC    79.23MHz 79.23MHz/2/1/50000
//  PR2 = 0x9ABF;  //  1KHz (0x9ABF;0d39615)  //FRC    79.23MHz 79.23MHz/2/1/1000

// ***********************************************
// 3.Timer
// ***********************************************
//  TMR2 = 0; 
    IFS0bits.T2IF = 0;
    while(1){
        if(IFS0bits.T2IF != 0 )break;
    }
}