AD Converter on ANC2, ANC3 not read well 16(L)F18346 SOLVED

[leo73]

Hello to every one,
I must acquire two voltage level on ANC2 and other on ANC3, unfortunatelly what it measures on ANC2 is reported onANC3 while in reality they are two different tension readings !!
Lock the debug (restectively ADC2 and ADC3)!!
There's some one who can help me please?

[leo73]

Hello,

I SOLVED

If you are using two or more AD channel, every time you changhe channel to acquire you must select channel like this:

Code: Select all

      // selec chanel  ANC3
      ADCON0.CHS5=0;ADCON0.CHS4=1;ADCON0.CHS3=0;ADCON0.CHS2=0;ADCON0.CHS1=1;
      ADCON0.CHS0=1; //010011
      Delay_ms(50);   // wait stabilistation
      amplitude = Lecture_ADC2(0x13);
      
      // selec chanel  ANC2
      ADCON0.CHS5=0;ADCON0.CHS4=1;ADCON0.CHS3=0;ADCON0.CHS2=0;ADCON0.CHS1=1;
      ADCON0.CHS0=0;  //010010
      Delay_ms(50);   // wait stabilistation
      amplitude = Lecture_ADC2(0x12);  //ANC2=0X12 // ad read on ch:14 (ANC3)

In attachement worked project.