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Hello
Please tell me where i am doing mistake ,
here i make AGND p2[4] pin and connect through 10k+10k voltage divider. and reading through P0[1] pin.
adc not working
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PSoC 1
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I have not the lightest clue with your description how you do a level shift to get the ADC input into the range 0..5V. Can you supply us with a schematic scetch?
Bob
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by DEMUX i am selecting adc point and 0v to 5v its is working but now i have to read 0v to -2.5v . i am not able to configure it properly
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You need to level shift your negative input using a resistor ladder. Read this article. Sorry, I couldn't find the excel file, you have to search for yourself.
Bob
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Excel spreadsheet attached in this thread:
http://www.cypress.com/forum/psoc-3-device-programming/floating-psoc#comment-352571
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Your files are not a PSoc Creator file set. Please send them correctly.