White Screen on 2.2 PiTFT for PiGRRL Zero

[Hellasius]

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

 
#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...

[sajingeo]

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]

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

[Hellasius]

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

 #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.

[sajingeo]

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

[adafruit2]

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!

[sajingeo]

its works!! changing the transistor worked :)

[adafruit2]

awesome!! nice work :)