ADC补充例程.doc

ADC设置补充例程 【1】、A2 ********************************************************************* #include msp430x14x.h #include BoardConfig.h void main(void) { volatile unsigned int i; WDTCTL = WDTPW+WDTHOLD; // Stop watchdog timer BoardConfig(0xb8); P6SEL |= 0x01; // P6SEL=0x0037 Enable A/D channel A0 ADC12CTL0 = ADC12ON+SHT0_2+REFON+REF2_5V;//Turn on and set up ADC12 ADC12CTL1 = SHP; // Use sampling timer ADC12MCTL0 = SREF_1; // Vr+=Vref+ for ( i=0; i0x3600; i++) // Delay for reference start-up { } ADC12CTL0 |= ENC; // Enable conversions while (1) { ADC12CTL0 |= ADC12SC; // Start conversion while ((ADC12IFG BIT0)==0); _NOP(); // SET BREAKPOINT HERE } } ****************************************************************** 【2】、A3 #include msp430x14x.h #include BoardConfig.h #define ADCDeltaOn 12 // ~2 Deg C delta static unsigned int FirstADCVal; // holds 1st ADC result void main(void) { WDTCTL = WDTPW + WDTHOLD; // Stop watchdog BoardConfig(0xb8); P3OUT = 0x00; // Clear P1 P3DIR = BIT4; // P3.4 as output ADC12CTL1 = SHS_1 + SHP + CONSEQ_2; // TA trig., rpt conv. ADC12MCTL0 = SREF_1 + INCH_10; // Channel A10, Vref+ ADC12IE = 0x01; // Enable ADC12IFG.0 ADC12CTL0 = SHT0_8 + REF2_5V + REFON + ADC12ON + ENC; // Config ADC12 TACCTL1 = OUTMOD_4; // Toggle on EQU1 (TAR = 0) TACTL = TASSEL_2 + MC_2; // SMCLK, cont-mode while (!(0x01 ADC12IFG)); // First conversion? FirstADCVal = ADC12MEM0; // Read out 1st ADC value _BIS_SR(LPM0_bits + GIE); // Enter LPM0 w/ interrupt } #pragma vector=ADC_VECTOR __interrup