More than 8 Analog Inputs on PSOC4 (CY8C4245)

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Anonymous
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Hi all,

   

similar to the problem mentioned here (http://www.cypress.com/forum/psoc-4-architecture/cy8ckit-043-4m-series-more-8-analog-pins)

   

is mine...

   

I need about 13 analog inputs (11 single sides , one differntial), see attached project.

   

I build an application using the seq SAR_ADC an an AMuxHW. The project compiles without an error. The software is running.

   

On the terminal I can read the values, but they behave strange and are not meaningful.

   

All values via the mux are nearly the same and seem to depend on the voltage of P2.6/P2.7 (diff input).

   

I tried several combinations, like only one input of the SAR-ADC, but it seems to me that the AMuxHW is not working proberbly.

   

I even added an analog output (TAnalog). By switching the inputs, I expected a change on that signal - nothing..

   

Anyone, any ideas 😉

   

Is there a restriction of the analog system, using the SAR-ADC and more than 8 inputs ???

   

Greetings (from germany)

   

Alex

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Vasanth
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250 sign-ins 500 solutions authored First question asked

Hi Alexander,

The code is missing Opamp_1_Start() statement. Could you please check whether it is working after adding it ?

Regards,
VSRS

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