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Hi All,

I would like to use ADC and UART modul of PIC12F1572.
The problem is that +Vref pin of ADC and Rx pin of UART are same pins and I can not setup Alternate pin function in Flowcode7.
The +Vref pin is not active.

Can I get some help?

Best Regards,

Lagoda

Hi Lagoda,
To set-up alternative pins, first look at the datasheet on page 101: See which pin you want to change the function of.
E.g TX which is what your currently using (not RX) from pin RA0 to RA4
Work out the required value = 4 as it's bit 2.
Add the following C code at the start of your flowchart: If you want to change both RX and TX = bits 2 and 7 = 4 + 128 = 132
Add the following C code at the start of your flowchart(witin same block as OSCCON will be suffice): etc.
Also, you don't want to sendChar as when the AD value is 32 then you are sending a space and not the number 32.
You should use SendNumber instead.
You may also want a space between numbers.
What I do is after sending a number I use and
That makes each number appear on a new line

Martin

Hi Martin,

Thank you for your advices.

I modified the flowchart.
The Rx function of the UART is on the RA5 now.

But the "Vref+" pin is inactive, the ADC working with VDD reference.

Do you have any idea?
Best regards,

Lagoda

Hi Lagoda,

I think I have found the problem. Please can you try copying the attached file into your "Flowcode 7/FCD/PIC" folder.
Restart Flowcode and load your project and check that the ADC component properties are still set to Vref+, it might have changed thanks to the FCD changes.

Hopefully this should now work for you.

You can check by looking at the generated C code around line 629.
If all has worked correctly then the 1 should now be a 2.

Let us know how you get on.

Hi Ben,

Thank you for your help.

Unfortunately, the problem remains.

If i set the reference VDD then in the line 626 is: FC_CAL_ADC_Enable(3, 3, 0, 40);
If i set the reference Vref+ then in the line 626 is: FC_CAL_ADC_Enable(3, 3, 1, 40);

Best Regards,

Lagoda

Thanks for letting us know. I accidentally changed the settings in the DAC instead of the ADC.

Here is the corrected definition file.

And it works well !!!

Thank you very much!

Lagoda