If you would like to learn how easy it is to access the processor image via Docker using a simple example, this is the right place to start.

With a Revolution Pi Connect module and a DIO module, an output is controlled via Docker.

Ansible BETA

Not Support

This is a BETA! If you have any suggestions for improvement, please let us know.

You can also run the example with Ansible.

How to install and use Ansible: https://kunbus-gmbh.atlassian.net/servicedesk/customer/portal/1/article/2761523271?src=1748937706

Git Repo: https://github.com/RevolutionPi/revpi-ansible-recipes/tree/docker-io

Currently, only for RevPi Connect (+)!

Preparation

Create a hardware configuration using RevPi Connect Module and DIO Module
Connect a 24V LED to DIO output 1 or output 2
Install Docker

curl -fsSL https://get.docker.com -o /tmp/get-docker.sh
sudo sh /tmp/get-docker.sh
sudo docker run hello-world
sudo usermod -aG docker pi
# restart shell
exit

Create this file

#/bin/bash

# io.sh

#$1: file
#$2: offset
#$3: length
#$4: value
function writeByte() {
printf "$(printf '\\x%02X' $4)" | dd of="$1" bs=1 seek=$2 count=$3 conv=notrunc &> /dev/null
}

#$1: file
#$2: offset
#$3: length
function readByte() {
od -t x1 -j "$2" -N "$3" -Ad "$1"
}

echo "write 0 to address $1 in host $(hostname)..."
writeByte /dev/piControl0 $1 1 0
echo "read address $1 in host $(hostname):"
readByte /dev/piControl0 $1 1
echo
sleep 1
echo
echo "write 1 to address $1 in host $(hostname)..."
# value 3 => Pins 1 and 2
writeByte /dev/piControl0 $1 1 3
echo "read address $1 in host $(hostname):"
readByte "/dev/piControl0" $1 1

Run the example

the following example could look different depending on the configuration

Run the command:

piTest -v O_1

take the variable offset (70)

Execute the following command – the parameter “70” points to the outputs of the DIO module.

The 24V LED should blink once.

Knowledge Base Support

Docker Setup on RevPi Devices

Ansible BETA

Preparation

Run the example