adafruit-circuitpython-tt21100

Introduction

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Basic driver for TT21100 touchscreen drivers. The ESP32-S3 Box dev board uses it.

Dependencies

This driver depends on:

• Adafruit CircuitPython <https://github.com/adafruit/circuitpython>_
• Bus Device <https://github.com/adafruit/Adafruit_CircuitPython_BusDevice>_

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle <https://circuitpython.org/libraries>_ or individual libraries can be installed using circup <https://github.com/adafruit/circup>_.

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI <https://pypi.org/project/adafruit-circuitpython-tt21100/>_. To install for current user:

.. code-block:: shell

pip3 install adafruit-circuitpython-tt21100

To install system-wide (this may be required in some cases):

.. code-block:: shell

sudo pip3 install adafruit-circuitpython-tt21100

To install in a virtual environment in your current project:

.. code-block:: shell

mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-tt21100

Installing to a Connected CircuitPython Device with Circup

Make sure that you have circup installed in your Python environment. Install it with the following command if necessary:

.. code-block:: shell

pip3 install circup

With circup installed and your CircuitPython device connected use the following command to install:

.. code-block:: shell

circup install adafruit_tt21100

Or the following command to update an existing version:

.. code-block:: shell

circup update

Usage Example

.. code-block:: python

import time
import busio
import board
import adafruit_tt21100

# Create library object (named "tt") using a Bus I2C port
i2c = busio.I2C(board.SCL, board.SDA)

tt = adafruit_tt21100.TT21100(i2c)

while True:
    # if the screen is being touched print the touches
    if tt.touched:
        print(tt.touches)

    time.sleep(0.15)

Documentation

API documentation for this library can be found on Read the Docs <https://docs.circuitpython.org/projects/tt21100/en/latest/>_.

For information on building library documentation, please check out this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>_.

Contributing

Contributions are welcome! Please read our Code of Conduct <https://github.com/adafruit/Adafruit_CircuitPython_TT21100/blob/HEAD/CODE_OF_CONDUCT.md>_ before contributing to help this project stay welcoming.