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Hi,
I'm new in developing embedded systems and just trying to built my own voltmeter based on PSoC 5LP using PSoC Creator 4.0/4.1. When I try to configure the ADC_SAR I cannot set the Vref value. I have learned from the datasheet that this is normal because when using internal reference the Vref is read only (fixed 2.500volts).
Although I would like to have the input range from Vss (0V) up to Vdda witch is set to 3,3volts. So the Vref should be set to 1.6500 volts. I have no external reference voltage so have to use the internal. Please help how to perform the measurement between 0-3,3V.
Many thanks!
Gabor
Solved! Go to Solution.
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Most likely you did not set the new voltage in the project. In the workspace explorer, go to the "design-wide resources". On the "System" tab you can set the correct voltage.