How to solve "Resources are overused between nets" error?

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AdAd_4715121
Level 1
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First question asked

Hello everyone,

I'm new to ModusToolbox and I'm trying to build a 4 wire resistance meter using an OpAmp, a SAR ADC and a IDAC (like picture below).

In Device Configurator after https://snaptube.cam/ 9apps setting up all the Peripherals I get this error: "Resources 'oa_vminus[0], amuxbus_b_csd0, amuxbus_b_sar' are overused between nets 'P5[4] analog, P9[1] analog, AREF vref, P5[3] analog, CSD(Capsense, etc) 0 amuxbus_a, CSD (Capsense, etc) 0 amuxbus_b'

Has anyone encountered this error before or can point me in the right direction?

Thank you,

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1 Solution
Vasanth
Moderator
Moderator
Moderator
250 sign-ins 500 solutions authored First question asked

Hi,

I think you forgot to attach the image. If you go to device configurator -> Analog Routing, you can see how the analog resources are distributed. You can see that Amux bus is a limited resource and just make sure that you are using minimal resources. You can change the ADC input pin to a dedicated pin ( may be port 10 pins) and see whether the routing is successful.

Following document should be helpful:

https://www.cypress.com/documentation/application-notes/an218241-psoc-6-mcu-hardware-design-consider...

Best Regards,
Vasanth

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1 Reply
Vasanth
Moderator
Moderator
Moderator
250 sign-ins 500 solutions authored First question asked

Hi,

I think you forgot to attach the image. If you go to device configurator -> Analog Routing, you can see how the analog resources are distributed. You can see that Amux bus is a limited resource and just make sure that you are using minimal resources. You can change the ADC input pin to a dedicated pin ( may be port 10 pins) and see whether the routing is successful.

Following document should be helpful:

https://www.cypress.com/documentation/application-notes/an218241-psoc-6-mcu-hardware-design-consider...

Best Regards,
Vasanth

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