ESP8266 Community Forum

- Sun May 10, 2015 8:53 am #17081 GPIO15 is tied straight to GND, no resister. Does this matter?

gpio15 to gnd with or without resistor ?

I would really like to get a screen working withy ESPs...

I have a bunch of these SP1 screens that work with my nanos but when i hook them up to the ESP Arduino i get white screen.

I'm using these connections and the latest arduino environment. and the ILI9341 example compiles fine.
not working for me. 2.4" ili9341 tft lcd touch screen.

ESP8266 ili9341 2.4" LCD
GPIO 2 D/C
GPIO15 CS (and GPIO15 -> GND)
GPIO12 MISO/SDO
GPIO13 MOSI/SOI
GPIO14 SCK
3.3v -> pot LED
3.3v RESET
3.3v VCC
GND GND

does anyone have some suggestions?

- Sun May 10, 2015 10:46 am #17094 Better to always use a resistor; the board I have uses 10K. Wouldn't want to burn out GPIO15 driving straight into ground. Can it still blink an LED in a simple sketch?
With the pull-down on GPIO15 and the other connections you listed, I've had success with the ILI9341. I used the library versions in the github sources (newer than the ones in the release packages). I think even newer versions might be coming out soon, worth the wait.

- Sun May 10, 2015 11:37 am #17098

Look into the recent (May 9, 7:21AM PDT) chat on the esp8266/Arduino Gitter.
Links2004 is working on some very promising patches to the Adafruit_ILI9341 library, getting remarkable speed - the whole graphic demo runs in under nine seconds on the setup I've seen.

what/where is "the esp8266/Arduino Gitter"?

- Sun May 10, 2015 11:44 am #17099

Look into the recent (May 9, 7:21AM PDT) chat on the esp8266/Arduino Gitter.
Links2004 is working on some very promising patches to the Adafruit_ILI9341 library, getting remarkable speed - the whole graphic demo runs in under nine seconds on the setup I've seen.

what/where is "the esp8266/Arduino Gitter"?

https://github.com/esp8266/Arduino/pull/210