#include "msp430x22x4.h"
#include "Clock_def.h"
//用顯波器來觀察以下管腳
//并通過修改"Clock_def.h"文件來定義各個時鐘
//                 MSP430F2274
//             -----------------
//         /|\|              XIN|-  
//          | |                 |
//          --|RST          XOUT|-
//            |             P1.4|---->SMCLK
//            |             p2.0|---->ACLK
//            |             P2.1|---->SMCLK     
int main( void )
{
  WDTCTL=WDTPW+WDTHOLD;         //關看門狗

#if(DCO_FREQUENCY==1)
  BCSCTL1=CALBC1_1MHZ;	        //設定DCO為1MHZ
  DCOCTL=CALDCO_1MHZ;
#elif  (DCO_FREQUENCY==8)
  BCSCTL1=CALBC1_8MHZ;	        //設定DCO為8MHZ
  DCOCTL=CALDCO_8MHZ;
#elif  (DCO_FREQUENCY=12)
  BCSCTL1=CALBC1_12MHZ;	        //設定DCO為12MHZ
  DCOCTL=CALDCO_12MHZ;
#elif   (DCO_FREQUENCY=16)
  BCSCTL1=CALBC1_16MHZ;	        //設定DCO為16MHZ
  DCOCTL=CALDCO_16MHZ;     
#endif        
  P1SEL |=BIT4;                 //P1.4輸出SMCLK
  P1DIR |=BIT4;
  P2SEL |=BIT0+BIT1;            //P2.1輸出SMCLK,P2.0輸出ACLK
  P2DIR |=BIT0+BIT1; 
  
#ifdef  ACLK_VLOCLK        
  
    BCSCTL3 |=LFXT1S1;          //ACLK來源VLO
#endif 

#ifdef  SMCLK_LFC
    BCSCTL2 |=SELS;             //SMCLK來源LFC(LFXT1CLK或VLOCLK由ACLK_VLOCLK決定)
#endif

#ifdef  MCLK_XT2_OR_LFC         //MCLK時鐘源選擇設定
       BCSCTL2 |=SELM1; 
#endif  
  return 0;  
}