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Hi guys how are you doing !
I beg your help with an issue that arise because I am using many AMuxHW comoponents simultaneously.
Wtha I need is 8 Demux with VDDA and VSSA as input.
If you woulkd like to take a look at the schematic I am posting trough a PDF file, I am sure you will undestand more clearly.
Psoc creator give me a build error when I try to use one analaog input to connect externaly VDDA to one DEMUX input and VSSA to the other. This is happening wit pin_1 (VDD) and PPin_2 (VSS). ( take a look to nschematic)
Both pin are located at P3(0) and P3(1).
If there are other way to do that plese let me know.
I am using the CY8CKIT-030 PSoC® 3 Development Kit
I will as always appreciate very much any help.
Thank you
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PSoC 3
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Attachment is missing.
Can you post your complete project, so that we all can have a look at all of your settings? To do so, use Creator->File->Create Workspace Bundle (minimal) and attach the resulting file (do NOT use chrome, that still may not work).
Bob
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I found this to route error free -
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HI again all of you.!!! Thank you very much.
dannaknight ; thank so much for your answer and sugestion, I have tried that before and Psoc C. give me build error for that.
Just wait my explanation about what I have tried before.
Bob : I have created a minimal bundle as you have suggested me.
First of all what I am intend to do :
I have 64 FSR( force sensitive sensor) arranged in an array of 8x 8.
Because the scannig method I would need to sequentialy connect to Gnd least columns in a given instant of time. That is the reason of the row of Demultiplexers.
But the issue here is that Psoc Creator give me an error with pin components where I am connecting Vdda and Vssa.
I have tried the solution proposed by dannaknight befor the actual one but with other component , the analog multiplexer.
In that case Psoc creator ask me for put pin component and does not place of Vref component. Is like que
On the other hand I haven't write code yet.!!!
I stoped the intention to do to solve the issue with hardware.
So thank you all of you for some help
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Wouldn't switching be easier with a digital port? Since you are interested only in switching between Vcc and Gnd that could make your design much more simpler.
Bob
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Using digital port would increase FR measuerment inaccuracy and add additional undesired noise
into meaurement.
Regards, Dana.
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Hi Thank you very much for the suggestion!
I am wondering how can I use a digital port to conmute between VCC and Gnd would you Bob explain me with a simple diagram ?
I suppose you are talking about a digital input port.
In that case who will change the digital value from vcc to gnd ?
Any way this issue in my project may be worked out with a couple of MAX4674, 2:1 multiplexer. but it was no my intetion .
But I am wondering why Psoc 3 cannot do that. I would learn about that.
It is about routing optimization ?
Thank you guys
Best regards,
Alex101
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Thank you very much Bob !
I wil try that !!!!
Best regards,
Alex101