//*****************************************************************************

// Clock 1

//   Uses default DCO at 1MHz

//

// MSP430G2211

// Jed Margolin  2/27/2016.

// Built with Code Composer Studio v6

//*****************************************************************************

// main.c

#include <msp430.h>

#define TIME 6

void wait(unsigned int);

void wait2(void);

//================================================

int main(void)

{

            volatile unsigned int k = 0;

            WDTCTL = WDTPW + WDTHOLD;           // Stop watchdog timer

            wait(125);                   // give the crystal (if there is one) 500ms to stabilize

            P1SEL  |= BIT0;                     // ACLK for monitoring the crystal

//          P1SEL2 &= ~(BIT0);             // not used by msp430g2211

            P1DIR  |= BIT0;

            P1SEL  &= ~BIT1;                 // In

//          P1SEL2 |= BIT1;                    // not used by msp430g2211

            P1REN |= BIT1;                      // pullup/pulldown enabled

            P1OUT |= BIT1;

            P1DIR &= ~(BIT1);

            P1SEL  &= ~BIT2;                 // Out

//          P1SEL2 |= BIT2;                    // not used by msp430g2211

            P1DIR |= BIT2;

            P1SEL  &= ~(BIT3);              // Out - for testing

//          P1SEL2 &= ~(BIT3);             // not used by msp430g2211

            P1DIR |= BIT3;

            P1SEL  |= BIT4;                     // Out for SMCLK so we know it's working

//          P1SEL2 &= ~(BIT4);             // not used by msp430g2211

            P1DIR |= BIT4;

            P1SEL  &= ~(BIT5);              // In

//          P1SEL2 &= ~(BIT5);             // not used by msp430g2211

            P1REN |= BIT5;                      // pullup/pulldown enabled

            P1OUT |= BIT5;                     // pullup

            P1DIR &= ~(BIT5);               //

            P1SEL &= ~(BIT6);               // Out

//          P1SEL2 &= ~(BIT6);             // not used by msp430g2211

            P1DIR |= BIT6;                       // pullup

P1DIR &= ~(BIT7);               // In

            P1OUT |= BIT7;                     // pullup

            P1SEL  &= ~(BIT7);

//          P1SEL2 &= ~(BIT7);             // not used by msp430g2211

            P1REN |= BIT7;                      // pullup/pulldown enabled

#if 1       // Make this '0' to compare factory calibration with no calibration

               // You might have to unplug power to the board to actually reset this

// The 2211 has factory calibration constants only for 1MHz

            if(CALBC1_1MHZ != 0xFF)   // If it has been erased don't use

                                                              //    the calibration constants

            {

                        DCOCTL = 0;                         // Select lowest DCOx and MODx settings

                        BCSCTL1 = CALBC1_1MHZ;          // Set range

                        DCOCTL = CALDCO_1MHZ;          // Set DCO step + modulation

                        P1OUT &= ~BIT2;                             // clear it

            }

            else      // Set P1.2 high if the 1MHz calibration values have been erased

            {

                        P1OUT |= BIT2;

            }

#endif

//-----------------------

            while (1)                                 // main loop

            {

                        P1OUT |= BIT6;

                        wait(125);

                        P1OUT &= ~(BIT6);

                        wait(125);

            }  // end main loop

}  // end main

//==================================

void wait(unsigned int time)

{

    volatile unsigned int i,j;

    for(i=time; i>0; i--)

    {

            for(j=392; j>0; j--);

            {

            }

    }

 return;

} // end main

//==========================================================

void wait2()

{

volatile unsigned int i;

for(i=0; i<48; i++){}

            return;

}

//========================================================