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PSoC Creator4.2 vs.PSoC 4 Capacitive Sensing (CapSense®) page28
PSoC 4000S/PSoC 4100S/PSoC 4100S Plus/PSoC Analog Coprocessor: 48000 kHz or HFCLK, whichever is lower.
How ever PSoC Creator4.2 is Max 24000
How to set up 48000 kHz?
Solved! Go to Solution.
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Hi
The reason PSoC creator limits the modulator clock frequency to 24000 kHz in this case is because the HFCLK is limited to 24 MHz within the design.
If you require 48000kHz clock modulator clock frequency, please select the Clocks tab in the Design Wide Resources, click on Edit Clock option.
Here you can set the HFCLK frequency to 48MHz by choosing IMO as the source and changing the divider to 1.
I've attached screenshots for your reference. Once you set the HFCLK to 48MHz, the option for 48000kHz in modulator clock frequency should be active.
Please follow these steps and let us know if you were able to select 48000 kHz as modulator clock frequency.
Thanks and regards
Hari
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Hi
The reason PSoC creator limits the modulator clock frequency to 24000 kHz in this case is because the HFCLK is limited to 24 MHz within the design.
If you require 48000kHz clock modulator clock frequency, please select the Clocks tab in the Design Wide Resources, click on Edit Clock option.
Here you can set the HFCLK frequency to 48MHz by choosing IMO as the source and changing the divider to 1.
I've attached screenshots for your reference. Once you set the HFCLK to 48MHz, the option for 48000kHz in modulator clock frequency should be active.
Please follow these steps and let us know if you were able to select 48000 kHz as modulator clock frequency.
Thanks and regards
Hari
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Hello
Thank you for your reply.
I did it..
Thank you very much.
K,Miyake
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Hello
This is K,Miyake
I did according to cypress Cap Sense manual that is frequency 48000kHc Tx clock 1000kHz
However this result was no good
Signal Level is smaller than noise level
This frequency is too high ? Right?
I attached pad Spec. Could you please give me your opinion.
Thank you
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Hi
Could you please attach your project so that we can take a look?
You can find the details of archiving a project in this link :
https://community.cypress.com/docs/DOC-9742
Thanks and regards
Hari
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Hi
I'm attaching the project with few changes to the CapSense component. Please try it out and let us know if it works.
I have enabled the IIR filter in General tab under advanced tab of properties.
Under widget details, i have set the finger threshold to 300 and number of sub-conversions to 500.
Please do try it and let us know if it works
Thanks and regards
Hari
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Hello
Did you try the program attached above? Is it working in your case?
Regards
Hari
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Hello
I changed
1. Unused Pad Line which connected to GND to open
2. Modulator clock frequency(kHz) 48000
3. Enable common Tx clock 1000 not 3000:Manual recommendation
4. Number of sub -conversions 200 not 500
* RAW Count 3500 touch finger 4500 count
Thank you for your help
K,Miyake
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