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3.5 TFT conflict on GPIO18
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3.5 TFT conflict on GPIO18

by hifi on Sun Dec 14, 2014 8:11 pm

I'm trying to use 3.5 TFT together with HifiBerry DAC+ on the same Raspberry Pi B+.
When I start 'mpd' to play music through DAC+ the TFT goes dark (no backlight).
Player (mpd + DAC+) works fine. When I stop player the TFT goes back to normal and so on.

I suspect there is a conflict on pin GPIO18 which is used for Baclkight on TFT:
https://learn.adafruit.com/adafruit-pit ... /backlight
and for sound transport on DAC+:
http://www.hifiberry.com/forums/topic/h ... pberry-pi/

Is there any way to disable TFT using that pin GPIO18?
Thanks!

hifi
 
Posts: 26
Joined: Sat Nov 29, 2014 1:32 am

Re: 3.5 TFT conflict on GPIO18

by hifi on Mon Dec 15, 2014 1:08 am

Never mind I just disconnected GPIO18 from LCD and now everything works fine.

hifi
 
Posts: 26
Joined: Sat Nov 29, 2014 1:32 am

Re: 3.5 TFT conflict on GPIO18

by elliottferrell on Mon Feb 15, 2016 4:14 pm

Hifi, have you gone forward with your pi 2 and amp+ build? I've found the woodware page on hifi and am curious to know of your progress?

elliottferrell
 
Posts: 1
Joined: Mon Feb 15, 2016 4:12 pm

Please be positive and constructive with your questions and comments.