wtty

Tool to monitor output from ttyUSB

wtty on Raspberry PI setup

Download "minibian" distro (https://minibianpi.wordpress.com/) for Raspberry PI. Flash it:

sudo -i
tar xzvf 2016-03-12-jessie-minibian.tar.gz
dd if=2016-03-12-jessie-minibian.img bs=4M | pv | dd of=/dev/sdb

Insert the sdcard into the RPI, connect ethernet and power, log into the RPI with root/raspberry, then do the following.

Change password:

passwd

Update and upgrade packages and run raspi-config:

apt-get update
apt-get upgrade -y
apt-get dist-upgrade -y
apt-get install raspi-config
raspi-config

Modify vim /boot/config, add the following to disable BT and WiFi:

dtoverlay=pi3-disable-bt
dtoverlay=pi3-disable-wifi

In raspi-config change:

• 2 Hostname
• 4 Localization > I2 Change Timezone
• 7 Advanced Options > A1 Expand Filesystem
• <Finish> and reboot

After reboot continue installing and cleanup:

apt-get install \
  make git vim-nox logrotate htop \
  python python-yaml python-flask python-socketio python-pip
apt-get autoclean
apt-get clean

Then create wtty filesystem:

mkdir /srv/wtty

Edit vim /etc/fstab, adding the following to make it available on boot:

/dev/sda1 /srv/wtty ext4 errors=remount-ro,noatime,nodiratime,commit=120 0 1

Mount it:

mount /srv/wtty

Create file "/etc/logrotate.d/wtty" containing:

/srv/wtty/output/*.log {
  size 4M
  daily
  copytruncate
  rotate 7
  missingok
}

/srv/wtty/input/*.log {
  size 4M
  daily
  copytruncate
  rotate 7
  missingok
}

/srv/wtty/*.log {
  size 4M
  daily
  copytruncate
  rotate 7
  missingok
}

Install wtty:

mkdir -p $HOME/git
cd $HOME/git
git clone https://github.com/safl/wtty.git
cd wtty
make install

Reboot to check that everything starts up correctly on boot.