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GSR with the ADPD4100

Category: Software

In the webinar "Getting Multiple Vital Signs by a Single Chip for Wearable Devices," the hardware configuration for GSR measurements is shown:

However, I cannot find much information about the necessary software configuration to perform GSR measurements. My hardware is setup as follows:

Can I please get some guidance?

Are components besides the ADPD4100 needed for GSR monitoring? 

Are there any examples for the programming available that uses the GPIO pin as an excitation source? Or is an external low frequency excitation source required?