MSP430F149学习之路——AD

代码一：Timer_A触发转换

 #include <msp430x14x.h>
 void main()
 {
   WDTCTL = WDTPW + WDTHOLD;
   P6SEL |= BIT0;
   TACTL |= TASSEL_2 + MC_2;
   TACCTL1 = OUTMOD_3;
   TACCR1 = 0X0FFF;
   ADC12CTL0 = ADC12ON + SHT0_2;
   ADC12CTL1 = SHS_1 + SHP;
   while()
   {
     ADC12CTL0 |= ENC;
     ADC12CTL0 |= ADC12SC;
     while((ADC12IFG & ADC12BUSY) == );
     ADC12CTL0 &= ~ENC;
   }
 }

代码二：ADC12序列通道多次转换

 #include <msp430x14x.h>
 #define uint unsigned int
 #define uchar unsigned char

 uint results0;
 uint results1;
 uint results2;
 uint results3;

 void int_clk()
 {
   BCSCTL1 &= ~XT2OFF;
   BCSCTL2 |= SELS + SELM1;
   do
   {
     IFG1 &= ~OFIFG;
     for(int i=;i<;i++)
       _NOP();
   }while((IFG1 & OFIFG)==);
   IFG1 &= ~OFIFG;
 }

 void int_adc()
 {
   P6SEL |= 0X0F;
   ADC12CTL0 = ADC12ON + MSC + SHT0_2 + REFON + REF2_5V;
   ADC12CTL1 = SHP + CONSEQ_3;
   ADC12MCTL0 = INCH_0;
   ADC12MCTL1 = INCH_1;
   ADC12MCTL2 = INCH_2;
   ADC12MCTL3 = INCH_3;
   ADC12IE = 0X08;
   ADC12CTL0 |= ENC;
 }
 #pragma vector=ADC_VECTOR
 __interrupt void ADC12_ISR()
 {
   results0 = ADC12MEM0;
   results1 = ADC12MEM1;
   results2 = ADC12MEM2;
   results3 = ADC12MEM3;
 }
 void main()
 {
   WDTCTL = WDTPW + WDTHOLD;
   int_clk();
   int_adc();
   _EINT();
   ADC12CTL0 |= ADC12SC;
 }