MPXA4115A picbasic code

[flotulopex]

Thanks bitmaniac,

I have read Alain's explanation about "oversampling" and "rolling mean value" in a previous post but I'm still not clear why it is necessary to declare a DEFINE to do so.

I think, I don't understand what the DEFINE does.

Any clue for me?

[mark_s]

Thanks bitmaniac,

I have read Alain's explanation about "oversampling" and "rolling mean value" in a previous post but I'm still not clear why it is necessary to declare a DEFINE to do so.

I think, I don't understand what the DEFINE does.

Any clue for me?

Hello,
You are correct you should set the pic to 10 bits:
DEFINE ADC_BITS 10

http://www.darreltaylor.com/DT_Analog/

If you study Darrel's example in the above link, bottom of the article.
You set your oversampling resolution in this line:


ADbits = 12 ; set to 12-bit resolution

Regards
Mark

[Acetronics2]

I think, I don't understand what the DEFINE does.

Any clue for me?

Hello, Roger

DEFINE only set a constant ... used to DEFINE some processor module or macros configs.

the value is tested, and relevant settings are chosen by the compiler ( sort of conditionnal assembly - if you prefer ... sort of !!! )

just look at the difference ( in the asm listing) between DEFINE ADC_BITS 8 and ADC_BITS 10 ...

Should be little differences in the ADCONx setting values ... don't you think ???

Alain

[flotulopex]

Thanks Alain,

I was confused because of the value (16) in Darrel's code example.

I now understand what this particular DEFINE does