PCF2111 LCD driver example code. Used with a dual-chip module (each chip drives 8 digits). Data and Clock lines are shared. This example code is written with portability in mind and can be used for PCF2111 in any configuration. Future plans may be making a full ascii font (for this particular module). The code displays a scrolling message on the 16 digit 7 segment LCD. A hexadecimal font (for this particular segment setup) extended with several characters is included. segment map: A or B indicates A/B register a1 --- | |a3 b1| a2| --- | |a4 b2| | --- __ b4 \/b3 docs: LOCM3 docs: http://libopencm3.org/docs/latest/stm32f1/html/ PCF2111 datasheet: https://www.nxp.com/docs/en/data-sheet/PCF21XXC_FAM.pdf Copyright 2020 polprog.net. Released on 3-clause BSD. See COPYING file for details