多路数据

1万 · 2019-6-23 16:46

ADC10MEM是16位的寄存器，只能储存一次数据，但多路数据是怎么储存的。

2万 · 2019-6-23 16:51

碰到类似问题，关注。。。

1万 · 2019-6-23 16:55

.如果采用ADC10DTC1寄存器和ADC10SA，那么得到的数据怎么不是对的？

1万 · 2019-6-23 16:59

以上两种，对于单通道单次采样有啥区别呢？代码如下：
#include  "msp430g2553.h"
#include "normal.h"
#include "LCDdriver.h"

uchar flag;
void main(void)
{
WDTCTL = WDTPW + WDTHOLD;                // Stop WDT
uchar i;
ulong buffer1,buffer2;
float voltage1,voltage2;
lcdinit();
P1DIR &=~(BIT0+BIT1);                            // A0 A1
ADC10AE0 |=0x03;
ADC10CTL1 = INCH_1 + ADC10DIV_3 + CONSEQ_3;       //A1 A0, repeat sequence
ADC10CTL0 = SREF_1 + ADC10SHT_3 + MSC + REFON +REF2_5V+ ADC10ON + ADC10IE;
delayms(100);
ADC10DTC1 = 0x10;
flag=1;
while(1)
{

  if(flag)

  {

  flag=0;

  ADC10CTL0 &= ~ENC;

  ADC10DTC1 = 0x10;                      // 16 conversions

  while (ADC10CTL1 & BUSY);             // Wait if ADC10 core is active

  ADC10SA = 0x200;                      // Data buffer start

  buffer1=0;

  buffer2=0;

for(i=0;i<32;i++)

{

if(i<16)

buffer1+=*(uint *)(0x200+2*i);

else

buffer2+=*(uint *)(0x200+2*i);

}

voltage1 = (float)(buffer1)*2.5/(8*1023);

voltage2=  (float)(buffer2)*2.5/(8*1023);

display_hanz(1,1,"A1:");

LCD_DispDec(1,4,voltage1,1,3);

delayms(100);

display_hanz(2,1,"A0");

LCD_DispDec(2,4,voltage2,1,3);

delayms(200);

ADC10CTL0 |= ENC + ADC10SC;          // Sampling and conversion start

__bis_SR_register(CPUOFF+GIE);

  }
}
}

// ADC10 interrupt service routine
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR(void)
{
   flag=1;
__bic_SR_register_on_exit(CPUOFF);
}