main.c

基于MSP430F149的AD转换程序

#include          "msp430x14x.h"                                                // Standard Equations
#include          "1602.h"

static unsigned int results[2];                                                 // Needs to be global in this example
unsigned int i=0;                                                                                // Otherwise, the compiler removes it
                                                                                // because it is not used for anything.

void init_clk()
  {
    unsigned int i;
    BCSCTL1 = 0X00;			                                        //将寄存器的内容清零
					                                        //XT2震荡器开启
					                                        //LFTX1工作在低频模式
					                                        //ACLK的分频因子为1					
    do 
    {
	IFG1 &= ~OFIFG;                                                         // 清除OSCFault标志
	for (i = 0x20; i > 0; i--);                
    }
    while ((IFG1 & OFIFG) == OFIFG);                                            // 如果OSCFault =1   
					
    BCSCTL2 = 0X00;			                                        //将寄存器的内容清零
    BCSCTL2 += SELM1;		                                                //MCLK的时钟源为TX2CLK，分频因子为1
    BCSCTL2 += SELS;		                                                //SMCLK的时钟源为TX2CLK，分频因子为1
  }
/*
void shujiu()
  {
     flag1=(results[0]/4095)*3.3;
                flag2=(results[1]/4095)*3.3;
                
                temp=power*10;
                tab1[0]=power/10;               
                tab1[1]=(int)power%10;
                tab1[2]=temp%10;
                
                temp=effcient*10;
                tab2[0]=effcient/10;                
                tab2[1]=(int)effcient%10;
                tab2[2]=temp%10;
                
                GotoXY(0,0);
                    WriteLCD(DATA,tab1[0]+'0');
                    WriteLCD(DATA,tab1[1]+'0');
                    WriteLCD(DATA,tab1[2]+'0');   
                GotoXY(0,1);
                    WriteLCD(DATA,tab2[0]+'0');
                    WriteLCD(DATA,tab2[1]+'0');
                    WriteLCD(DATA,tab2[2]+'0'); 
  }
*/
void main(void)
  {
      unsigned char tab1[3]={0,0,0};
      unsigned char tab2[3]={0,0,0};
      unsigned int temp;
       float flag1,flag2;
       float power,effcient;
      
      
      WDTCTL = WDTPW+WDTHOLD;                                                   // Stop watchdog timer
      init_clk();
      LCD_Initial();
      
      P6SEL = 0x03;                                                             // Enable A/D channel inputs                                                                  
      ADC12CTL0 = ADC12ON+MSC+SHT0_2;                                           // Turn on ADC12, set sampling time
      ADC12CTL1 = SHP+CONSEQ_3;                                                 // Use sampling timer, single sequence
      ADC12MCTL0 = INCH_0;                                                      // ref+=AVcc, channel = A0
      ADC12MCTL1 = INCH_1+EOS;                                                  // ref+=AVcc, channel = A1
      //ADC12MCTL2 = INCH_2+EOS;                                                // ref+=AVcc, channel = A2,end seq.      
      ADC12IE = 0x02;                                                           // Enable ADC12IFG.3     
      ADC12CTL0 |= ENC;                                                         // Enable conversions
      ADC12CTL0 |= ADC12SC;
      _EINT();
      while(1)
          { 
                //ADC12CTL0 |= ADC12SC;                                         // Start conversion
                
                flag1=results[0];
                flag2=results[1];
                
                power=flag1/10;
                effcient=flag2/10;
                
                temp=power*10;
                tab1[0]=power/10;               
                tab1[1]=(int)power%10;
                tab1[2]=temp%10;
                
                temp=effcient*10;
                tab2[0]=effcient/10;                
                tab2[1]=(int)effcient%10;
                tab2[2]=temp%10;
                
                GotoXY(0,0);
                    WriteLCD(DATA,tab1[0]+'0');
                    WriteLCD(DATA,tab1[1]+'0');
                    WriteLCD(DATA,tab1[2]+'0');   
                GotoXY(0,1);
                    WriteLCD(DATA,tab2[0]+'0');
                    WriteLCD(DATA,tab2[1]+'0');
                    WriteLCD(DATA,tab2[2]+'0');    
                    __delay_cycles(10000000);
          }
  }

#pragma vector=ADC_VECTOR
__interrupt void ADC12ISR (void)
  {   
      results[0] = ADC12MEM0;                                                   // Move results, IFG is cleared
      results[1] = ADC12MEM1;                                                   // Move results, IFG is cleared
            
      // results[2] = ADC12MEM2;                                                // Move results, IFG is cleared            
  }