glim / Raspberry-Pi-Utils

Raspi related librairies & tools

Raspberry-Pi-Utils

Raspi related librairies & tools

You can found a copy of this software here: https://github.com/ronanguilloux/Raspberry-Pi-Utils

Raspberry Pi PCD8544 Library

A simple PCD8544 LCD (Nokia3310/5110) driver. Target board is Raspberry Pi. This driver uses 5 GPIOs on target board with a bit-bang SPI implementation (hence, may not be as fast but seems fast enough). The pcd8544_cli tool, to be compiled, allow you to display messages freely on the display. Makes use of WiringPI-library of Gordon Henderson (https://projects.drogon.net/raspberry-pi/wiringpi/)

Image source & inspiration: http://binerry.de/post/25787954149/pcd8544-library-for-raspberry-pi

Requirements

This makes use of WiringPI-library of Gordon Henderson - so the WiringPI-library is required to be installed.

Usage

The PCD8544 file is a library, the pcd8544_cli is a cli-tool example, to be extended by you. Since gcc is installed on Raspberry Pi images, you can easily build them:

$ cc -o pcd8544_cli pcd8544_cli.c PCD8544.c  -L/usr/local/lib -lwiringPi

Usage:

pcd8544_cli [options] <text to display>

Available options:

• -h: show this help on usage & options
• -i: show IP address
• -d: show datetime

Print help informations in the terminal (will reset the display)

$ sudo ./pcd8544_cli -h

Example 1: Print "Foooooooooooooooooooooooooo" on the display:

$ sudo ./pcd8544_cli "Foooooooooooooooooooooooooo"

Example 2: Print current IP address on the display:

$ sudo ./pcd8544_cli -i

Example 3: Print current datetime on the display:

$ sudo ./pcd8544_cli -d

Copyrights

PCD8544.c & PCD8544.h are copyright (C) 2010 Limor Fried, Adafruit Industries

CORTEX-M3 version by Le Dang Dung, 2011 [e-mail] (tested on LPC1769)

Raspberry Pi version:

• initiated by Andre Wussow, 2012, [e-mail], https://github.com/binerry/RaspberryPi
• hacked by Ronan Guilloux, 2013, https://github.com/ronanguilloux/Raspberry-Pi-Utils

License

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.