MSP430FR2422: MSP430FR2422

Dear Sir,

Thanks for your timely help. This help is really appreciated. I understood MSP430FR2422 controller has only one ADCMEM0 register.

I have some queries in the below mention points.

1. Controller need to moinitor the channel1 for continous interrupt for 10 microseconds and also in parallely measuring the 2nos  channel  by polling method. This our requirement. Please could you guide me.

2. I have written code for 2nos channel by polling method. But if any changes in any one of channel. Another channel value also get affected and some times i am not able to change the value.

These are my hard code for 2 nos channel polling method. Could you please give me some idea. One channel input is stable. Another channel value is varying.

void ADC_Configuration(void)

{

   // Configure ADC10

#if 0

     ADCCTL0 |= ADCSHT_2 | ADCON;                             // ADCON, S&H=16 ADC clks

     ADCCTL1 |= ADCSHP;                                       // ADCCLK = MODOSC; sampling timer

     ADCCTL2 |= ADCRES;                                      // 10-bit conversion results

     ADCMCTL0 |= ADCINCH_0;                                   // A0 ADC input select; Vref=AVCC

     ADCIE |= ADCIE0;                                         // Enable ADC conv complete interrupt

#endif

#if 1

       ADCCTL0 |= ADCSHT_2 | ADCON;

       ADCCTL1 |= ADCSHP;                                       // ADCCLK = MODOSC; sampling timer

      ADCCTL2 |= ADCRES;

#endif

}

void ADC_ChannelConfiguration(void)

{

   // Configure ADC A0 ,A1pin

     SYSCFG2 |= ADCPCTL0 |ADCPCTL1;

}

void ADCstartEvent(void)

{

   ADCCTL0 |= ADCENC | ADCSC;                           // Sampling and conversion start

}

void ADC_TVSdiodeTemperature(void)

{   SYSCFG2 |= ADCPCTL0;

   ADCCTL1 |= ADCCONSEQ_0;

   ADCMCTL0 |= ADCINCH_0;                                 //P1.0 CHANNEL A0

   ADCstartEvent();

   while(ADCCTL1 & ADCBUSY);

   TVSTempCount += ADCMEM0;

   Count1++;

   SYSCFG2 &=~ ADCPCTL0;

   ADCCTL0 &= ~ADCENC;

   if(Count1>100)

   {

       TVSTempCount =TVSTempCount/100;

       TVSTempVolatge =TVSTempCount * 3.3/1024;

       TVSTempCount=0;

       Count1 =0;

   }

}

void ADC_TVSdiodeLeakageCurrent(void)

{   SYSCFG2 |=ADCPCTL1;

     ADCCTL1 |= ADCCONSEQ_0;

     ADCMCTL0 |= ADCINCH_1;

     ADCstartEvent();

     while(ADCCTL1 & ADCBUSY);

     LekageCount+=ADCMEM0;

     Count2++;

     SYSCFG2 &=~ADCPCTL1;

     ADCCTL0 &= ~ADCENC;

     if(Count2>100)

     {

         LekageCount = LekageCount/100;

         TVSLkgVoltage = LekageCount *3.3/1024;

         LekageCount=0;

         Count2=0;

     }

}