Raspberry Pi I2C controlled LCD

rpi-i2c-lcd is a simple driver to control LCD attached to Raspberry Pi, over i2c port expander.

• Supports write only operations for 2x16 dot matrix LCD.
• Prints string and single characters to LCD screen.
• Based on bcm2835 library.

Usage

#include "rpi-i2c-lcd.h" in your code.
Call lcd_cursor_pos() before lcd_put_str() and lcd_put_char().
See example test-i2c-lcd.c.

References

• Implemented from Python into C. lcd_i2c.py
• GPIO based LCD lib
• PCF8574 i2c port expander schematic
• Dot matrix LCD controller spec, HD44780

License

Distributed under the terms of the MIT license.
Copyright (c) 2019 positronics.engineer at yandex dot com.