Closed taxilly closed 6 years ago
The first thing to try with problems like this is to lower the speed, which you have tried. The next is checking wiring. The ultimate test is to look at the signals with a scope or logic analyzer.
Looked at the signals and noticed MOSI looked a bit weak, checked the pin soldering and saw it was pretty poor, re-soldered and it works reliably now. Also explains why sometimes it'd work, I guess the pins just touched the contacts more... My bad.
On
Linux pilove 4.9.50+ #1035 Wed Sep 13 22:53:09 BST 2017 armv6l GNU/Linux
Runningsudo modprobe fbtft_device name=adafruit22a rotate=270 debug=32
Causes the display to turn black momentarily and then white again - the display seems to work erratically, sometime working fine, and others nothing at all...
I've also noticed the display, when working, sometimes turns white. I can control backlight brightness, I've also added
fbcon=map:10
to/boot/cmdline.txt
.dmesg:
lsmod:
Tried changing speed to 10MHz, setting lower FPS etc etc.
I saw this issue: https://github.com/adafruit/Adafruit_Python_ILI9341/issues/1
Which expresses the same issue I'm having.
Any advice is greatly appreciated...