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basic 28027 adc setup

jOze
Prodigy 90 points


Hi all,

I am new with the dsp's. I am trying to setup the adc of the Piccolo 28027. I want  to convert the channels in simultaneous mode.

My first step has been trying to modify the example called lab3 but it doesn't work.

My code is the following:

 

void InitAdc(void)

{

  asm("EALLOW");   //Enable EALLOW protected register access

 

  AdcRegs.ADCCTL1.bit.RESET=1; //Reset the ADC module
 
  //Must wait 2 ADCCLK periods for the reset to take effect.

  //Note that ADCCLK=SYSCLKOUT for F2802x/F2803x devices.

  //Power-up and configure the ADC

  AdcRegs.ADCCTL1.all= 0x00E4;

  DelayUs(1000); //Wait 1ms after power-up before using the ADC.

//**************************************************************************************
  //SOCx configuration
//AdcRegs.ADCSAMPLEMODE.all=0x00FF; 
 
  AdcRegs.ADCSAMPLEMODE.bit.SIMULEN0=1; // the following instructions mean                                
  AdcRegs.ADCSAMPLEMODE.bit.SIMULEN2=1;// in simultaneous sample mode (vs. single sample mode)
  AdcRegs.ADCSAMPLEMODE.bit.SIMULEN4=1;
  AdcRegs.ADCSAMPLEMODE.bit.SIMULEN6=1;
  AdcRegs.ADCSAMPLEMODE.bit.SIMULEN8=1;
  AdcRegs.ADCSAMPLEMODE.bit.SIMULEN10=1;
  AdcRegs.ADCSAMPLEMODE.bit.SIMULEN12=1;
  AdcRegs.ADCSAMPLEMODE.bit.SIMULEN14=1;
//**************************************************************************************
// AdcRegs.ADCSOCxCTL.bit.TRIGSEL=7;  //Trigger using ePWM2-ADCSOCA 
 
  AdcRegs.ADCSOC0CTL.bit.TRIGSEL=7;
  AdcRegs.ADCSOC1CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC2CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC3CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC4CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC5CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC6CTL.bit.TRIGSEL=7;  
  AdcRegs.ADCSOC7CTL.bit.TRIGSEL=7;  
  AdcRegs.ADCSOC8CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC9CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC10CTL.bit.TRIGSEL=7;
  AdcRegs.ADCSOC11CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC12CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC13CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC14CTL.bit.TRIGSEL=7; 
  AdcRegs.ADCSOC15CTL.bit.TRIGSEL=7;   

//****************************************************************************************
// AdcRegs.ADCSOCxCTL.bit.CHSEL=0 //Ver tabla 17 para otras configuraciones.
// SOCx channel select. Selects the channel to be converted when SOCx is received by the ADC.
// The following instructions are for Simulatenous Sampling Mode/SIMULENx=1)

  AdcRegs.ADCSOC0CTL.bit.CHSEL=0;  // seleccion de canal
  AdcRegs.ADCSOC2CTL.bit.CHSEL=1;  // seleccion de canal
  AdcRegs.ADCSOC4CTL.bit.CHSEL=2;  // seleccion de canal
  AdcRegs.ADCSOC6CTL.bit.CHSEL=3;  // seleccion de canal
  AdcRegs.ADCSOC8CTL.bit.CHSEL=4;  // seleccion de canal 
  AdcRegs.ADCSOC10CTL.bit.CHSEL=5; // seleccion de canal
  AdcRegs.ADCSOC12CTL.bit.CHSEL=6; // seleccion de canal
  AdcRegs.ADCSOC14CTL.bit.CHSEL=7; // seleccion de canal
 

//*******************************************************************************************

//AdcRegs.ADCSOCxCTL.bit.ACQPS=6;// Sampling Windows is 7 cycles long(6+1 clock cycles).
//The quickest sampling window.


  AdcRegs.ADCSOC0CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC1CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC2CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC3CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC4CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC5CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC6CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC7CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC8CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC9CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC10CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC11CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC12CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC13CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC14CTL.bit.ACQPS=6;
  AdcRegs.ADCSOC15CTL.bit.ACQPS=6;

//**********************************************************************************************

//AdcRegs.ADCINTSOCSELy.bit.SOCx=0; //ADC Interrupt Trigger selection.
//In this case, 0 means that NO ADC INT will trigger SOCx.


 AdcRegs.ADCINTSOCSEL1.all = 0x0000;
 AdcRegs.ADCINTSOCSEL2.all = 0x0000;
  //AdcRegs.ADCINTSOCSEL1.bit.SOC0=0;
  //AdcRegs.ADCINTSOCSEL1.bit.SOC1=0;
  //AdcRegs.ADCINTSOCSEL1.bit.SOC2=0;
  //AdcRegs.ADCINTSOCSEL1.bit.SOC3=0;
  //AdcRegs.ADCINTSOCSEL1.bit.SOC4=0;
  //AdcRegs.ADCINTSOCSEL1.bit.SOC5=0;
  //AdcRegs.ADCINTSOCSEL1.bit.SOC6=0;
  //AdcRegs.ADCINTSOCSEL1.bit.SOC7=0;
  //AdcRegs.ADCINTSOCSEL2.bit.SOC8=0;
  //AdcRegs.ADCINTSOCSEL2.bit.SOC9=0;
  //AdcRegs.ADCINTSOCSEL2.bit.SOC10=0;
  //AdcRegs.ADCINTSOCSEL2.bit.SOC11=0;
  //AdcRegs.ADCINTSOCSEL2.bit.SOC12=0;
  //AdcRegs.ADCINTSOCSEL2.bit.SOC13=0;
  //AdcRegs.ADCINTSOCSEL2.bit.SOC14=0;
  //AdcRegs.ADCINTSOCSEL2.bit.SOC15=0;


//***************************************************************************************


//AdcRegs.SOCPRICTL.bit.SOCPRIORITY=0; // All SOC's handled in round-robin mode.

  AdcRegs.SOCPRICTL.bit.SOCPRIORITY=1;

//***************************************************************************************

 

  AdcRegs.INTSEL1N2.bit.INT1CONT=0; // ADCINT0 pulses generated only when ADCINT0 flag is clear

  AdcRegs.INTSEL1N2.bit.INT1E=1;  // Enable ADCINT0

  AdcRegs.INTSEL1N2.bit.INT1SEL=0; // EOC0 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=1; // EOC1 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=2; // EOC2 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=3; // EOC3 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=4; // EOC4 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=5; // EOC5 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=6; // EOC6 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=7; // EOC7 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=8; // EOC8 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=9; // EOC9 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=0xA; // EOC10 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=0xB; // EOC11 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=0xC; // EOC12 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=0xD; // EOC13 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=0xE; // EOC14 triggers ADCINT0
  AdcRegs.INTSEL1N2.bit.INT1SEL=0xF; // EOC15 triggers ADCINT0

 

  PieCtrlRegs.PIEIER1.bit.INTx1=1; //Enable ADCINT0 in IER to enable PIE Group
 
  IER|= 0x0001;

  AdcRegs.ADCCTL1.bit.ADCENABLE=1;
 
  asm("EDIS");


  } //end InitAdc()

 

 

Can anybody tell what is wrong? Or correct?

 

Thank you

  • 0
    Genius 4925 points

    hmm what "does not work" exactly?? a little bit more information about your problem would be helpful...

    best regards

    Andreas

  • 0 in reply to andreas von kaenel
    Prodigy 90 points

     Hi Andreas:

     

    Thank you for your interest. This was my first post, when I was lost trying to program the piccolo ADC.

    Now, my code is working. What I have done is to modify the code of the example Lab3, but step by spep. I mean, I've set up every channel instead of setting them up as you've seen in the post. So now I take a channel and I configure it, then... I configure the following one and so on.

    I really don't know if that was my problem but the fact is that now it's working properly.

    By all the way, thank you very much.

     

    Best regards.

  • 0 in reply to jOze
    Prodigy 20 points

    Did your code right what u posted? i did the same programming but giving problem.

    Can you suggest me what to do

    Thank you

  • 0 in reply to Mitesh Khatri
    Prodigy 90 points

    Hi:

    Sorry for replying so late but....I was spending my holidays. You Know: no laptop, no phone...no thinking.

    As I said the first time I posted, the code that you can see at the top didn't work.  

    After that, I programmed every channel in a secuential way, I mean, I set up a channel... then other. It worked fine.

    If you want I can send you my code.

     

    Best regards.

     

  • 0 in reply to jOze
    Prodigy 20 points

    thats ok but i m very happy to read your reply. I want that ADC part as i am stucked with it i have completed PWM program it is working well but not ADC.

    If u have No problem then can you send me please

     

    thank you

    cheers

  • 0 in reply to jOze
    Prodigy 10 points

    Dear JOze

     

    my name is Sutanto , and can i please have your Code from this Piccolo ADC ? (modify from Lab3)

     

    my E-mail: sutantorahmat@gmail.com

    Many Many Thanks for Your Help

     

    Regards

     

    Rahmat Sutanto