I am presently using a PSoC5 development kit,CY8CKIT-050. I understand that this chip enables 1 DelSig ADC and 2 SAR ADC.

When I build the program with 1 DelSig ADC, it works fine. When I add in 1 more SAR ADC, I get an error when build the program. Please refer to the attachment for a screen capture. Can anyone advise what is wrong?

Thanks

Which device you selected for your project?

It may also help if you submit the project here, so others can have a look.

I am using CY8C5568AXI-060. Attached is the project file. Is this the project file you are referring to?

Thanks

Sorry, how do i submit the project here?

Make an archive of the file which should be a zip file and then attached it to the post

There is only one DelSig ADC within your device and additionally an SAR but with lesser precision.

To overcome this lack you may easily use an analog multiplexor as input to the ADC and select which channel you want to digitize. Look out for the specs of the ADC! There are some hints in the datasheet (search for  "multiplex") to see what conversion mode is best and if there are conversions to drop.

Bob

To upload a project from Creator do:

Build->Clean Project

File->Create Workspace Bundle(minimal)

and then upload the resulting .Zip-File.

Bob

How is your ADC configured? By default, when I place a SAR ADC on schemativ, it's configured with 'internal Vref, bypassed'. This means, that P0[2] or P0[4] must be used to add a bypassing capacitor. But in your schematic, both are assigned to the analog mux for the DelSig-ADC.

Try to reset all pin configuration (unpin them) and then rebuild. Or you can configure the ADC to use the internal Vref solely (but this means not more than 100ksps).

Hi All,

Thanks for all your reply.

The problem has been solved.

It is due to I have already used P0(2) & P0(4) for my DelSig_ADC, and hence when the SAR_ADC int_ref is bypassed, I cannot build and there is an error.

Hi Bob,

Thanks for your advise. I will try it out.