Datasheet

Resistive Touch Screen

The LCD has a 4-wire resistive touch screen glued onto it. You can use this for detecting finger-presses, stylus', etc.

Normally, you'll need 4 pins to talk to the touch panel but we decided to go all snazzy and put a dedicated touch

screen driver onto the shield. The driver shares the SPI pins with the TFT and SD card, so only one extra pin is needed.

This allows you to query the controller when you're ready to read touchscreen data, and saves 3 pins.

To control the touchscreen you'll need one more library (https://adafru.it/d4f) - the STMPE610 controller library which

does all the low level chatting with the STMPE610 driver chip. Use the library manager to install the Adafruit STMPE610

library

Touchscreen Paint Demo

Now that you've got the basic TFT graphics demo working, let's add in the touchscreen. Run and upload the

touchpaint_featherwing demo

If you have the 2.4" TFT Featherwing, run the Adafruit ILI9341->touchpaint_featherwing demo

If you have the 3.5" TFT Featherwing, run the Adafruit HX8357->touchpaint_featherwing demo

Upload to your Feather and have fun!