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How to use Gpio Expander

Question asked by Siva_Sankar on May 7, 2018

Hello Everyone,

 

Am using ADAU1452 DSP Processor. I need to control (multiple)push buttons using singe GPIO. Is it possible to control using one GPIO.

 

Or-else using resistor ladder network can be able to control push buttons.

 

If the above things are not possible. Can I use GPIO Expander to control. Please do needful.

 

Here I have attached our schematics.

 

Regards,

Siva

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