16f877a Related adc float value comparison

[rdevendrakumar1989]

Hai brother,

I need clarification for the following case.

when i switch on the setup : Need to read ADC1 ( float value)

Adc1 value keep on vary. I want to compare Intial Adc1 value with the present Adc1 value

How can i do the comparison?

Thank you

[temtronic]

One way...
Inside main() read the ADC1 and store the value into a variable called 'initial_ADC1_value.
Then in your 'read and compare' loop(), read the ADC1 and store into a second variable called 'current_ADC1_value'.
Then compare the two variables using an If(.....) statement.

Also...

do NOT use floating point if you expect FAST results ! FP number crunching is very,very slow on PICs.It's far faster to use 'raw' int16 numbers or 'scaled' int16 numbers.


also...
press F11 while your program is open, and you'll get the CCS Help files up! Makes it easy to lookup almost anything code related!!

hth
jay

[rdevendrakumar1989]

Thank you for your kind reply.. Definitely i will do...