MSP430F1611: ADC12 single channel single conversation mode

ahmet gun

Part Number: MSP430F1611

Hi everyone,

I had a problem about adc12 single channel single conversation modes. I cannot read A1,A2,A3... just can read A0 when i select single channel mode i cannot configure it. Accualy I dont want to use interrupt services , start the conversion wait them finish and save the result. But first need read A1,A2,A3... with single channel single conversation. here is my code ;

int main(void)
{
  P6SEL |= 0x02;                            // P6.1 ADC option select
  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  ADC12CTL0 = SHT0_2 + ADC12ON +ENC+CSTARTADD_1;             // Set sampling time, turn on ADC12
  ADC12CTL1 = SHP;                          // Use sampling timer
  ADC12MCTL1 = INCH_1;
  ADC12IE = 0x02;                           // Enable interrupt
  ADC12CTL0 |= ADC12SC;                     // start conversion

  while(1){
      ADC12CTL0 |= ADC12SC;
  }
}

#pragma vector=ADC12_VECTOR
__interrupt void ADC12_ISR (void)
{
    int a;
    a = ADC12MEM1;
}

over 7 years ago

0 ahmet gun over 7 years ago

Prodigy 105 points

okey i figure it out i resolved that. when i write there my problem after that i resolve my self easily :O

0 Caleb Overbay over 7 years ago in reply to ahmet gun

TI__Genius 15370 points

Hi Ahmet,

Can you elaborate more on the solution for others on the forum who may experience a similar issue?

Best regards,
Caleb Overbay

0 ahmet gun over 7 years ago in reply to Caleb Overbay

Prodigy 105 points

of course :) .

that code i used for single channel single conversation mode ;

#include <msp430.h>

/*ADC12MCTL0 register used for select input adc pin memory always writing ADC12MEM0
  if you place debug point in if state u can see just how is working */
int main(void)
{
  P6SEL |= 0xB67;                            // ADC option select
  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  ADC12CTL0 = SHT0_8 + ADC12ON;             // Set sampling time, turn on ADC12
  ADC12CTL1 = SHP;                          // Use sampling timer
  ADC12MCTL0 = INCH_5+EOS;                  // u can change there INCH_7//INCH_0//INCH_4//INCH_2//INCH_1
  //ADC12IE   = 0x01;                           // Enable interrupt
  ADC12CTL0 |= ENC;                     // start conversion
  ADC12CTL0 |= ADC12SC;                     // start conversion
  __enable_interrupt();
  while(1){
      if(ADC12CTL1 & ADC12BUSY){
          //ADC12CTL0 |= ADC12SC;                     // start conversion 
          __no_operation();
      }
  }
}

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MSP430F1611: ADC12 single channel single conversation mode