Beaglebone Black 5 wire resistive touchscreen

Florian Lebrun

Prodigy 235 points

I'm designing a new board which use beaglebone black, LCD 18bits, and resistive 5wire touchscreen.

I want to use the integrated LCD controller to drive the lcd panel.

I would like to use also the integrated touchscreen controller to avoid external device.

What I know:

-controller is able to drive 4, 5 and 8 wire touchscreen

- it will use 5 adc channels.

My question is:

How to configure and activate it in the big line ( Hardware configuration .dts ? , command line to do to activate touchscreen controller? )

Thanks a lot for your help.

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi,

This is the wiki portal for the Linux ADC diver: processors.wiki.ti.com/.../Processor_SDK_Linux_ADC

0 Florian Lebrun over 10 years ago in reply to Biser Gatchev-XID

Prodigy 235 points

Thanks a lot Biser, i will study it in detail and come back if question . Thank you very much for your fast answered.

0 Randy Eberly over 9 years ago in reply to Florian Lebrun

Prodigy 20 points

Florian,
Were you able to solve the 5-wire touch issues? I have been working on the same thing and have not been able to find a working solution.

Randy

0 Florian Lebrun over 9 years ago in reply to Randy Eberly

Prodigy 235 points

Hi Randy,

Not really, my solution was to use a 4 wire screen.

Sorry to not be able to help you more.

0 Alvin Chang over 8 years ago in reply to Randy Eberly

Prodigy 140 points

Hi Randy,
I met the same problem as yours, I was not able to drive the 5-wire touch screen. But 4-wire touch screen has no problem. Did you solve the 5-wire touch issues?

0 Randy Eberly over 8 years ago in reply to Alvin Chang

Prodigy 20 points

I was not able to get the 5-wire to work with the onboard controller. I went with a seperate TSHARC controller from microchip. It works for both 5 wire and 8 wire.

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Beaglebone Black 5 wire resistive touchscreen