hello,
I need to set a sampling rate of 200hz in ADUC842.
As per my understanding,the minimum rate which we can set is in some KSPS
Can you pls provide me some help?
Regards, Mayuri
How about using a 200Hz timer interrupt to start a single conversion every 5 ms?
Can't you just ignore the excess samples?
would like to know how to ignore the excess samples?
Regards Mayuri
Errr.... "ignore" means you just don't do anything with them at all!
Discard them; pretend they didn't happen.
grrrrrr even i know that sir
So where's the problem? Please clarify!
sir, I dont want to loose my samples.
200 Hz is the frequency...
Data is very critical...
If you do run the ADC at 2000 samples/second, then you obviously have to throw a way 9 out of 10 of all samples. You will get your 200 valuable samples. Maybe, just maybe (depending on type of measurement) you could pick up all 10 samples and compute the average.
Same if you run the ADC in single-conversion mode and have a 200Hz timer interrupt to start the conversion.
So what exactly is your problem? What do you have issues with? Where are you stuck? What is holding you back?
"200 Hz is the frequency"
So what's the difference between sampling at 200 Hz, or sampling at 400 Hz and ignoring every other sample? Or sampling at 2000 Hz, and just using every tenth sample?
since I'm not going to read the datasheet for you I'll take that as fact although it sounds false,
however it MUST be able to take one, only one, reading.
so in a timer ISR running at 5ms take one sample
Erik