How to use touch pad default GPIOs as normal GPIOs.?

rahul.b.patel
Posts: 62
Joined: Wed Apr 19, 2017 6:35 am

How to use touch pad default GPIOs as normal GPIOs.?

Postby rahul.b.patel » Wed May 03, 2017 6:05 am

Hello,
I am facing a problem of accessing GPIOs which are used for Touch pad sensors in ESP32 Demo board v2,can not be used for normal GPIOs. I have tested them by configuring them as interrupt, but there is no response to any interrupt nor I have any response by using them as UART.
How to use them as normal GPIOs.? Do I have to make any extra configurations for the same.?

Thanks.

ESP_igrr
Posts: 2072
Joined: Tue Dec 01, 2015 8:37 am

Re: How to use touch pad default GPIOs as normal GPIOs.?

Postby ESP_igrr » Wed May 03, 2017 9:48 am

To connect these pins to the headers, you need to remove the bridge resistors which connect inputs to touchpads (R34, R40, R37, R25, R21, R43, R46, R49, R52, R55) and solder resistors (or just solder bridges) onto the neighbour pads (R57, R54, R48, R45, R30, R36, etc).

rahul.b.patel
Posts: 62
Joined: Wed Apr 19, 2017 6:35 am

Re: How to use touch pad default GPIOs as normal GPIOs.?

Postby rahul.b.patel » Thu May 04, 2017 5:29 am

Okay... Thanks for the early input.

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