LCD20 with lcdproc

LCD20.txt

### Setup of the i2c bus and tools ###

# Enable i2c bus with the menu of raspi-config
sudo raspi-config

# Reboot (this might not be necessary)
sudo shutdown -r now

# make sure Raspbian is up to date
sudo apt-get update
sudo apt-get upgrade

# Install i2c tools to verify the LCD connection:
sudo apt-get install i2c-tools

i2cdetect -l
##i2c-1 i2c             3f804000.i2c                            I2C adapter

i2cdetect -y 1
##      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
## 00:          -- -- -- -- -- -- -- -- -- -- -- -- --
## 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
## 20: -- -- -- -- -- -- -- 27 -- -- -- -- -- -- -- --
## 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
## 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
## 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
## 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
## 70: -- -- -- -- -- -- -- --

### Now start the download and instalation ###

cd
# Create a folder for all the git download
mkdir git
cd git

# Get the tree from the pull request from wilberforce
git clone -b i2c-config https://github.com/wilberforce/lcdproc-1.git

# Initially I did not notice the code was in a branch and did this:
# git clone https://github.com/wilberforce/lcdproc-1.git

# Make a local copy to avoid poluting:
cp -r lcdproc-1 lcdproc-i2c-config

# Get in our local copy
cd lcdproc-i2c-config/

# Get autoconf and configure

sudo apt-get -y install autoconf
sh autogen.sh
./configure --enable-drivers=hd44780

# Compile and install

sudo make install

### Verification of the installation detail ###

whereis LCDd
## LCDd: /usr/local/sbin/LCDd /usr/local/etc/LCDd.conf
ls -lsa /usr/local/sbin/LCDd
ls -lsa /usr/local/etc/
ls -lsa /usr/local/lib/lcdproc/

### Download my LCDd.conf for lcd20 with i2c remapping
# https://gist.github.com/dglaude/a14e19763a0bb43fa2bc7ca3bd0e029a
# curl -o LCDd.conf https://gist.githubusercontent.com/dglaude/a14e19763a0bb43fa2bc7ca3bd0e029a/raw/d5abb4031d2ac5fda3872e8cd64af247b3a83d60/LCDd.conf%2520for%2520lcd20%2520from%2520Rasp.iO
cd ..
curl https://gist.github.com/dglaude/a14e19763a0bb43fa2bc7ca3bd0e029a -o LCDd.conf

# Overwrite default LCDd.conf
sudo cp LCDd.conf /usr/local/etc/LCDd.conf

# Start LCDd in forground and maximum verbose
sudo LCDd -r 4 -f

## Server running in foreground
## Listening for queries on 127.0.0.1:13666
## HD44780: using ConnectionType: i2c
## hd44780: Using hd44780_default charmap
## HD44780: I2C: Init using D4 and D5, and or'd lines, invert
## HD44780: I2C: Pin RS mapped to 0x01
## HD44780: I2C: Pin RW mapped to 0x02
## HD44780: I2C: Pin EN mapped to 0x04
## HD44780: I2C: Pin BL mapped to 0x08
## HD44780: I2C: Pin D4 mapped to 0x10
## HD44780: I2C: Pin D5 mapped to 0x20
## HD44780: I2C: Pin D6 mapped to 0x40
## HD44780: I2C: Pin D7 mapped to 0x80
## HD44780: I2C: Invert Backlight 1
## HD44780: I2C: Using device '/dev/i2c-1' and address 0x27 for a PCF8574(A)