Firstly, which AVR are u using for your application, what is your Vref, did you make sure your ADC results is the combination of the results in HIGH and LOW register of the ADC, what is your clock speed, what is your ADC prescaler!!!
Secondly, what wizard???
Steven
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Steven Chang-Lin Yu
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From:
ereihani [mailto:ereihani@yahoo.com]
Sent: Sunday, 30 May 2004 3:44 PM
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] ADC problem!
HI!
I use 8-bit adc and i use the result conversion in
ADCH which is
produced in the wizard.I have given a DC voltage
of 2.5V and I have
got 128,but when I give a 40HZ sine and send the
result to PC and
plot with MATLAB the figure is very bad.I have
also increased the
sampling frequency but it was in vain.
Please guide me!
Thank you!
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