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White Screen on 2.2 PiTFT for PiGRRL Zero
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Please be positive and constructive with your questions and comments.

Re: White Screen on 2.2 PiTFT for PiGRRL Zero

by Hellasius on Sun Apr 08, 2018 1:19 pm

oxyink wrote:464/5000
Hello everyone, sorry I was away. So for my part, I just write my image retropie with etcher, then I followed the tutorial Adafruit.
eventually I had the white screen every time.
doing some modifications on all sides is what made my project work:

Write the Retropie image again.

Follow the complete tutorial but at the step:
run sudo nano /boot/config.txt

Do not copy the Adafruit lines.

Add this to the following:

Code: Select all | TOGGLE FULL SIZE
 
#overclocking extreme
arm_freq=1100
core_freq=550
sdram_freq=600
over_voltage=8
over_voltage_sdram=6
force_turbo=1
 
dtparam=spi=on
dtparam=i2c1=on
dtparam=i2c_arm=on
#forcing HDMI output at TFT screen resolution to be able to make the FB copy
#resolution configuration
hdmi_force_hotplug=1
hdmi_cvt=320 240 60 1 0 0 0
hdmi_group=2
hdmi_mode=87
# working config for speed
# 900 Mhz -> 48000000
# 1Ghz -> 35000000
#modification of the speed   
dtoverlay=pitft22,rotate=270,speed=60000000,fps=40




Also make sure your welds are ok.
For me everything worked perfectly after that, I hope I could help you.

I do not thank Adafruit who do nothing and leave their customers without information.


Hello oxyink,

I tried to add the line at the end of the config.txt. And it doent work = White screen.

Is it possile to share your IMG file that I can try exactly your image? I think we have the same PiTFT and same Pi, If it's working for you it should be working for me too...

Hellasius
 
Posts: 20
Joined: Wed Mar 07, 2018 5:44 pm

Re: White Screen on 2.2 PiTFT for PiGRRL Zero

by sajingeo on Sun Apr 08, 2018 10:50 pm

I have the same issues with a TFT screen I bought from microcenter. Really annoyed by the fact I will have to de-solder the entire TFT to try out a replacement.

sajingeo
 
Posts: 10
Joined: Sun Apr 08, 2018 10:15 pm

Re: White Screen on 2.2 PiTFT for PiGRRL Zero

by sajingeo on Sun Apr 08, 2018 10:55 pm

Why is micro-center still selling if Adafruit has put a hold on this?? I just spent 44$ for this kit.

sajingeo
 
Posts: 10
Joined: Sun Apr 08, 2018 10:15 pm

Re: White Screen on 2.2 PiTFT for PiGRRL Zero

by Hellasius on Mon Apr 09, 2018 8:59 am

I finaly succeed making my piTFT working by doing the modification on the config.txt as desctibe above.

I replace all the config.txt file by:

Code: Select all | TOGGLE FULL SIZE
 #overclocking extreme
arm_freq=1100
core_freq=550
sdram_freq=600
over_voltage=8
over_voltage_sdram=6
force_turbo=1
 
dtparam=spi=on
dtparam=i2c1=on
dtparam=i2c_arm=on
#forcing HDMI output at TFT screen resolution to be able to make the FB copy
#resolution configuration
hdmi_force_hotplug=1
hdmi_cvt=320 240 60 1 0 0 0
hdmi_group=2
hdmi_mode=87
# working config for speed
# 900 Mhz -> 48000000
# 1Ghz -> 35000000
#modification of the speed   
dtoverlay=pitft22,rotate=270,speed=60000000,fps=40


Screen is not working perfectly, sometimes when I power the pigrrl zero, I have white screen. I switch off everything, wait 1 or 2 minutes and power again and it's working.
Maybe I have deleted a line on the config.txt that I shouldn't... (If you have advice about it...).

Finally the screen is working, now I have some trouble running some Roms on GBA, but it's another story.

Hellasius
 
Posts: 20
Joined: Wed Mar 07, 2018 5:44 pm

Re: White Screen on 2.2 PiTFT for PiGRRL Zero

by sajingeo on Mon Apr 09, 2018 9:51 am

Just tried that out. Does not seem to work. I Do see the screen blink or sometimes go from white to black.

sajingeo
 
Posts: 10
Joined: Sun Apr 08, 2018 10:15 pm

Re: White Screen on 2.2 PiTFT for PiGRRL Zero

by adafruit2 on Sat Apr 14, 2018 10:49 pm

a friendly person's RMA has helped us figure out what happened. to keep it easier for us to track this issue, please see:

viewtopic.php?f=50&t=132799&p=665628

thanks!

adafruit2
Site Admin
 
Posts: 16564
Joined: Fri Mar 11, 2005 7:36 pm

Re: White Screen on 2.2 PiTFT for PiGRRL Zero

by sajingeo on Sun Apr 22, 2018 10:44 am

its works!! changing the transistor worked :)

sajingeo
 
Posts: 10
Joined: Sun Apr 08, 2018 10:15 pm

Re: White Screen on 2.2 PiTFT for PiGRRL Zero

by adafruit2 on Sun Apr 22, 2018 12:17 pm

awesome!! nice work :)

adafruit2
Site Admin
 
Posts: 16564
Joined: Fri Mar 11, 2005 7:36 pm

Please be positive and constructive with your questions and comments.