Tuning the MBR3xxx CapSense® Controllers - KBA90796

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Question: How do I tune the capacitive sensors of the CY8CMBR3xxx CapSense controllers?

 

Answer:

The CY8CMBR3xxx family of CapSense® controllers is built around the SmartSense™ auto-tuning algorithm. This algorithm reads the sensor properties and automatically adjusts the tuning parameters. You only need to configure the sensitivity register of the sensor (how sensitive the sensor should be to a human touch) through the I2C register map.

At the same time, you can disable the thresholds that were automatically set by the SmartSense auto-tuning algorithm and take control over the threshold parameters. You can disable the automatic threshold mode and manually set threshold values through the I2C register map.