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Q330 and Wine on Centos

Last edited by root

This document describes the steps to getting Wine and the Q330 software installed on Centos 7

After wine is installed you need to download the latest software from Q330.com

There are a few steps needed to get the usb to serial adapter to connect while running Willard.

The first step is to update the Wine registry to connect /dev/ttyUSB0 to com1. To do this run:

wine regedit

two new string values need to be put in the registry under HKEY_LOCAL_MACHINE/Software/Wine/Ports

Go to edit -> new -> String Value

Name it COM1 and the data entry should be /dev/ttyUSB0

Create another new entry with name COM5 but leave the data part blank. You should now be done with regedit and can close it.

Another issue is the permissions needed for the /tty/USB0 device are incorrect. We need to add field to the dialout group using:

sudo usermod -a -G dialout field

The last step is to the udev rules

as sudo create and edit /etc/udev/rules.d/50-ttyusb.rules with the following line

KERNEL=="ttyUSB[0-9]*",NAME="tts/USB%n",SYMLINK+="%k",GROUP="uucp",MODE="0666"

This should now allow Willard to communicate through COM1 to the usbtoserial device

Note: The last few steps of changing permissions on the ttyUSB devices also ensures POCUS works correctly as well.

In order for bader to work all rp_filter settings must be set to 0. Check their status by running: sysctl -a | grep \\.rp_filter

you should see something like (among other information):

net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.lo.rp_filter = 0
net.ipv4.conf.p7p1.rp_filter = 1
net.ipv4.conf.virbr0.rp_filter = 1
net.ipv4.conf.virbr0-nic.rp_filter = 1
net.ipv4.conf.wlp2s0.rp_filter = 1

In order to set them all to zero permanently we need to create a new conf file as sudo: /etc/sysctl.d/90-disable-rp_filter.conf

the contents should be what we found above but all set to 0:

net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.lo.rp_filter = 0
net.ipv4.conf.p7p1.rp_filter = 0
net.ipv4.conf.virbr0.rp_filter = 0
net.ipv4.conf.virbr0-nic.rp_filter = 0
net.ipv4.conf.wlp2s0.rp_filter = 0