for the Capsense CSD, is there a software way to change the Voltage Reference Vdac value?

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mish_288636
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Hi, so we are seeing a board-to-board variation on the ideal value for the Vdac for the Voltage Reference Source for the Capsense CSD component, ver 3.50.  Is there some way in software to change this value?  The settings are as follows:

Current Source:  IDAC Sourcing

IDAC range: 255 uA

Number of bleed resistors: 1

Digital resource implementation: UDB Timer

Voltage reference source:

(*) Vdac     130   (2.08 V)         -------->  This value needs to be difference for different boards due to unit-to-unit variation.

Is there some software API or register to write to that can change this value?

Thanks!

-Michael Shonle

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Hari
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750 replies posted 500 replies posted 250 solutions authored

Hi mish_288636

You can use the CapSense_VdacRefCH0_SetValue() API to set the VDAC value. It accepts a parameter that is the VDAC code (from 1 to 255) which corresponds to the VDAC value.

Thanks and regards

Hari

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Hari
Moderator
Moderator
Moderator
750 replies posted 500 replies posted 250 solutions authored

Hi mish_288636

You can use the CapSense_VdacRefCH0_SetValue() API to set the VDAC value. It accepts a parameter that is the VDAC code (from 1 to 255) which corresponds to the VDAC value.

Thanks and regards

Hari