
SparkFun SerLCD 16x2 - RGB Backlight (QWIIC)	SparkFun SerLCD 16x2 - RGB Text (QWIIC)	SparkFun SerLCD 20x2 - RGB Backlight (QWIIC)

Python module for I2C control of the SparkFun Qwiic Serial LCDs.

This package enables the user to access all of the features of these LCD products via a single Qwiic cable. This includes writing text to the screen, adjusting backlight levels (color), customizing splash screen and much much more. They come pre-programmed with the fully open-sourced OpenLCD firmware. All of the capabilities of these LCD screens are each demonstrated in the included 17 examples.

This package can be used in conjunction with the overall SparkFun qwiic Python Package

New to qwiic? Take a look at the entire SparkFun qwiic ecosystem.

Supported Platforms

The qwiic serlcd python package current supports the following platforms:

Dependencies

This driver package depends on the qwiic I2C driver: Qwiic_I2C_Py

Documentation

The SparkFun qwiic serlcd documentation is hosted at ReadTheDocs

Installation

PyPi Installation

This repository is hosted on PyPi as the sparkfun-qwiic-serlcd package. On systems that support PyPi installation via pip, this library is installed using the following commands

For all users (note: the user must have sudo privileges):

sudo pip install sparkfun-qwiic-serlcd

For the current user:

pip install sparkfun-qwiic-serlcd

Local Installation

To install, make sure the setuptools package is installed on the system.

Direct installation at the command line:

python setup.py install

To build a package for use with pip:

python setup.py sdist

A package file is built and placed in a subdirectory called dist. This package file can be installed using pip.

cd dist

pip install sparkfun_qwiic_serlcd-<version>.tar.gz

Example Use

See the examples directory for more detailed use examples.

from __future__ import print_function
import qwiic_serlcd
import time
import sys
 
def runExample():
 
    print("\nSparkFun Qwiic SerLCD   Example 1\n")
    myLCD = qwiic_serlcd.QwiicSerlcd()
 
    if myLCD.connected == False:
        print("The Qwiic SerLCD device isn't connected to the system. Please check your connection", \
            file=sys.stderr)
        return
 
    myLCD.setBacklight(255, 255, 255) # Set backlight to bright white
    myLCD.setContrast(5) # set contrast. Lower to 0 for higher contrast.
    myLCD.clearScreen() # clear the screen - this moves the cursor to the home position as well
 
    time.sleep(1) # give a sec for system messages to complete
    
    myLCD.print("Hello World!")
    counter = 0
    while True:
        print("counter: %d" % counter)
        myLCD.setCursor(0,1)
        myLCD.print(str(counter))
        counter = counter + 1
        time.sleep(1)
 
if __name__ == '__main__':
    try:
        runExample()
    except (KeyboardInterrupt, SystemExit) as exErr:
        print("\nEnding Example 1")
        sys.exit(0)