search

cbm80amiga / Arduino_ST7789_Fast

Fast SPI library for the ST7789 IPS display
GNU Lesser General Public License v3.0
227 stars 66 forks source link

IPS 240x240 does not work #12

Open ejmorgan55 opened 2 years ago

ejmorgan55 commented 2 years ago

I cannot get this library to work with an IPS 240x240 TFT? I have tried 2 different IPS to ensure it was not a hardware issue. Both have the backlight illuminate; but will not operate. I have tried several of the example codes and none work at all. I have ensured the connections and I am using an Arduino Nano. I read past issues and even tried placing a 1k resistor on each communication line; still only a blank screen with the backlight lit. I am using 3.3v and the wiring is correct. Anything I might be able to try? Thanks

cbm80amiga commented 2 years ago

Don't use resistors, they break square wave at high speed SPI. Try to use slower SPI speeds, change it in the library. And use 3V3, are you sure you can power it that way in nano? My nanos don't work properly, so I use pro mini in most projects which require VCC=3V3.