adc.zip_msp430g2553

#include <msp430g2553.h> char a[6]=""; int da; int j; double c,data; void delay(int t) { int s=500; for (;t>0;t--) { for (;s>0;s--) { ;; } } } void write_com (char com) { P1OUT&=~(1<<3); //RS=0 P1OUT&=~(1<<4); //RW=0 P1OUT&=~(1<<5); //en=0 P1OUT&=~(1<<1); delay(8); P2OUT=com; delay(8); P1OUT|=(1<<5); //en=1 delay(8); P1OUT&=~(1<<5); //en=0 } void write_data(char dt) { P1OUT|=(1<<3); //RS=1 P1OUT&=~(1<<4); //RW=0 P1OUT&=~(1<<5); //en=0 delay(8); P2OUT=dt; delay(8); P1OUT|=(1<<5); //en=1 delay(8); P1OUT&=~(1<<5); //en=0 } void initial_lcd(void) { delay(20); write_com(0x38); delay(15); write_com(0x0c); delay(15); write_com(0x06); delay(15); write_com(0x01); } void LCD_Disp(char x, char y, char *character) { char xtemp; switch(x) { case 0:xtemp=0x80+y;break; case 1:xtemp=0xc0+y;break; default : break; } write_com(xtemp); while(*character!=0) { write_data(*character); character++; } } void main (void) { char *pa; pa=a; WDTCTL = WDTPW +WDTHOLD ; P2SEL=0x00; P2DIR |= 0xff; P1DIR |= 0x38; initial_lcd(); ADC10CTL0 = SREF_1 + ADC10SHT_2 + REFON +ADC10ON +ADC10IE+REF2_5V; __enable_interrupt(); TACCR0 =30; TACCTL0 |=CCIE; TACTL = TASSEL_2 | MC_1; LPM0; TACCTL0 &=~CCIE; __disable_interrupt(); ADC10CTL1 =INCH_1; ADC10AE0 |=0x02; for (;;) { ADC10CTL0 |=ENC +ADC10SC; __bis_SR_register(CPUOFF + GIE); da=ADC10MEM; data=((double)da/1024)*2.5; c=data; a[0]=((int )c%10+0x30); a[1]=0x2e; a[2]=((int)(c*10)%10+0x30); a[3]=((int)(c*100)%10+0x30); a[4]=((int)(c*1000)%10+0x30); a[5]='\0'; for (j=0;j<=5000;j++) LCD_Disp(0,0,pa); } } //ADC10 interrupt service routine #pragma vector = ADC10_VECTOR __interrupt void ADC10_ISR(void) { __bic_SR_register_on_exit(CPUOFF); } #pragma vector = TIMER0_A0_VECTOR __interrupt void ta0_isr(void) { TACTL = 0; LPM0_EXIT; }