//******************************************************************************************
//  PIC32MX120F032B Sample Program
//   Project      :
//   Program Name :
//   Programer    :
//   Create date  :  Version 1.0    H24.06.09
//   History      :
//   Laungage     :  MPLAB C32 
//******************************************************************************************
//  (1)Description
//        Internal OSC PLL 40MHz (8MHz/2*20/2) 
//******************************************************************************************
//#include        <p32mx120f032b.h>
#include        <plib.h> 
//
//Define configration
//
#pragma config PMDL1WAY  = OFF    //Peripheral Module Disable Configuration:Allow multiple reconfigurations 
#pragma config IOL1WAY   = OFF    //Peripheral Pin Select Configuration:Allow multiple reconfigurations 
#pragma config FUSBIDIO  = OFF    //USB USID Selection:Controlled by Port Function 
#pragma config FVBUSONIO = OFF    //USB VBUS ON Selection:Controlled by Port Function 
//#pragma config FPLLIDIV= DIV_1  //PLL Input Divider:1x Divider (DIV_1,DIV_2,DIV_3,DIV_4,DIV_5,DIV_6,DIV_10,DIV_12)
#pragma config FPLLIDIV  = DIV_2
//#pragma config FPLLMUL = MUL_15 //PLL Multiplier:15x Multiplier(MUL_15,MUL_16,MUL_17,MUL_18,MUL_19,MUL_20,MUL_21,MUL_24)
#pragma config FPLLMUL   = MUL_20 
//#pragma config FPLLODIV= DIV_1  //System PLL Output Clock Divider:PLL Divide by 1(DIV_1,DIV_2,DIV_4,DIV_8,DIV_16,DIV_32,DIV_64,DIV_256) 
#pragma config FPLLODIV  = DIV_2
//#pragma config FNOSC   = FRC    //Oscillator Selection Bits:Fast RC Osc (FRC) (FRC,FRCPLL,PRI,PRIPLL,SOSC,LPRC,FRCDIV16,FRCDIV)
#pragma config FNOSC     = FRCPLL 
#pragma config FSOSCEN   = OFF    //Secondary Oscillator Enable:Disabled
#pragma config IESO      = OFF    //Internal/External Switch Over:Disabled 
#pragma config POSCMOD   = OFF    //Primary Oscillator Configuration:Primary osc disabled (EC,XT,HS,OFF)
#pragma config OSCIOFNC  = OFF    //CLKO Output Signal Active on the OSCO Pin::Disabled 
#pragma config FPBDIV    = DIV_1  //Peripheral Clock Divisor:Pb_Clk is Sys_Clk/1 (DIV_1,DIV_2,DIV_4,DIV_8)
#pragma config FCKSM     = CSDCMD //Clock Switching and Monitor Selection:Clock Switch Disable, FSCM Disabled (CSECME,CSECMD,CSDCMD)
#pragma config WDTPS     = PS1    //Watchdog Timer Postscaler:1:1 (PS1,,,,PS1048576)
#pragma config WINDIS    = OFF    //Watchdog Timer Window Enable:Watchdog Timer is in Non-Window Mode 
#pragma config FWDTEN    = OFF    //Watchdog Timer Enable:WDT Disabled (SWDTEN Bit Controls) 
#pragma config FWDTWINSZ = WINSZ_50//Watchdog Timer Window Size:Window Size is 50% (WINSZ_75,WINSZ_50,WINSZ_37,WISZ_25)
#pragma config DEBUG     = OFF    //Background Debugger Enable:Debugger is Disabled  
#pragma config JTAGEN    = OFF    //JTAG Enable:JTAG Disabled 
#pragma config ICESEL    = RESERVED//ICE/ICD Comm Channel Select:Reserved (RESERVED,ICS_PGx3,ICS_PGx2,ICS_PGx1)
#pragma config PWP       = OFF    //Program Flash Write Protect:
#pragma config BWP       = OFF    //Boot Flash Write Protect bit:
#pragma config CP        = OFF    //Code Protect:
//
//Define function
//
#define TIM 1000
void wat(unsigned int);
void Timer(void);
void mvLED(unsigned int *);

int main(void)
{
    unsigned int LEDlst;   // 32bit

// *******************
//  1.Define PORT
// *******************
// (1)Define PortB
    TRISB = 0x00000000;    // 32bit
    LATB  = 0x00000000;    // 32bit
    PORTB = 0x00000000;    // 32bit

// (2)Set Initial Vale
    LEDlst = 0x00000001;
    PORTB = LEDlst;

// *******************
//  2.Program Main
// *******************
    while(1){
        wat(10) ;
        mvLED(&LEDlst);
    }
} 

//******************************************************************************************
//   Function Name : mvLED
//   Title         : Move LED function
//   Input         :
//   Output        :
//******************************************************************************************
void mvLED(unsigned int *LEDlst)
{
   if(*LEDlst == 1){
      *LEDlst = 2;
   }else if(*LEDlst > 127){
      *LEDlst = 1;
   }else{
      *LEDlst = *LEDlst * 2;
   }
   PORTB = *LEDlst;
}

//******************************************************************************************
//   Function Name : wat
//   Title         : 
//   Input         : 0.1[S] * n
//   Output        :
//******************************************************************************************
void wat(unsigned int no)
{
    unsigned int lp;
    for(lp=0;lp<no;lp++)
        Timer();
}

//******************************************************************************************
//   Function Name : Timer
//   Title         : wait function
//   Input         :
//   Output        :
//   Description   : 40MHz, 0.1[S]
//******************************************************************************************
void Timer(void)
{
// ***********************************************
// 1.Define T2CON Register (32Bit)
//     T2CON(31-16) Unimplemented: Read as �e0�f
//     T2CON(15) ON: Timerx On bit 
//        1 = Starts / 0 = Stop
//     T2CON(14) Unimplemented: Read as �e0�f
//     T2CON(13) SIDL: Stop in Idle Mode bit
//        1 = Discontinue module operation when device enters Idle mode
//        0 = Continue module operation in Idle mode
//     T2CON(12-8) Unimplemented: Read as �e0�f
//     T2CON(7) TGATE: Timer Gated Time Accumulation Enable bit(3)
//        When TCS = 1:
//           This bit is ignored and is read as �e0�f.
//        When TCS = 0:
//           1 = Gated time accumulation is enabled
//           0 = Gated time accumulation is disabled
//     T2CON(6-4) TCKPS1:TCKPS0: Timerx Input Clock Prescale Select bits
//        111 = 1:256 prescale value
//        110 = 1:64 prescale value
//        101 = 1:32 prescale value
//        100 = 1:16 prescale value
//        011 = 1:8 prescale value
//        010 = 1:4 prescale value
//        001 = 1:2 prescale value
//        000 = 1:1 prescale value
//     T2CON(3)  T32: 32-Bit Timer Mode Select bit(1)
//        1 = Odd numbered and even numbered timers form a 32-bit timer
//        0 = Odd numbered and even numbered timers form a separate 16-bit timer
//     T2CON(2) Unimplemented: Read as �e0�f
//     T2CON(1) TCS: Timerx Clock Source Select bit(2)
//        1 = External clock from TxCK pin
//        0 = Internal peripheral clock
//     T2CON(0) Unimplemented: Read as �e0�f
// ***********************************************
//  T2CON = 0b00000000000000001000000001100000;  //  1/64,16Bit  
    T2CON = 0b00000000000000001000000001110000;  //  1/256,16Bit     

// ***********************************************
// 2.Set PR2-Register (PR2[31-16]:Unimplemented, PR2[15-0]timer )
// ***********************************************
    PR2 = 0x00003D09;  //10Hz (0x3D09;0d15625)    // FRC 40MHz  40MHz/1(pic32)/256(prescale)/10(Hz)
//  PR2 = 0x00004C4B;  // 8Hz (0x9896;0d19531.25) // FRC 40MHz  40MHz/1(pic32)/256(prescale)/8(Hz)
//  PR2 = 0x00009896;  // 4Hz (0x9896;0d39062.5)  // FRC 40MHz  40MHz/1(pic32)/256(prescale)/4(Hz)
//  PR2 = 0x00007A12;  // 1Hz (0x7A12;0d31250)    // FRC 8MHz    8MHz/1(pic32)/256(prescale)/1(Hz)
//  PR2 = 0x0000186A;  // 5Hz (0x186A;0d6250)     // FRC 8MHz    8MHz/1(pic32)/256(prescale)/5(Hz)
    TMR2 = 0;

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