Optionally, to be able to use the
/sys/
files not as super user, create a new group "ionopi"
and set it as the module owner group by adding an udev rule:
$
sudo groupadd ionopi
$
sudo cp 99-ionopi.rules /etc/udev/rules.d/
and add your user to the group, e.g., for user "pi":
$
sudo usermod -a -G ionopi pi
Reboot:
$
sudo reboot
You will find all the available devices under the directory
/sys/class/ionopi/.
Iono Pi utility
The Iono Pi utility is a simple command-line script to control Iono Pi.
Run the following commands to download and install the Iono Pi utility:
$
sudo apt install git
$
git clone --depth 1 https://github.com/sfera-labs/iono-pi-c-lib.git
$
cd iono-pi-c-lib
$
sudo chmod +x build
$
sudo ./build
For additional details, refer to https://github.com/sfera-labs/iono-pi-c-lib
You can run the Iono Pi utility without arguments to print its options:
$
iono
usage: iono <command>
Commands:
-v Print the version number of the ionoPi library
led on Turn on the green LED
led off Turn off the green LED
o<n> open Open relay output o<n> (<n>=1..4)
o<n> close Close relay output o<n> (<n>=1..4)
oc<n> open Open open collector oc<n> (<n>=1..3)
oc<n> close Close open collector oc<n> (<n>=1..3)
di<n> Print the state ("high" or "low") of digital input di<n> (<n>=1..6)
di<n> -f Print the state of digital input di<n> now and on every change
ai<n> Print the voltage value (V) read from analog input ai<n> (<n>=1..4)
ai<n> -r Print the raw value read from the A/D converter's channel
corresponding to analog input ai<n> (<n>=1..4)
1wire bus Print the list of device IDs found on the 1-Wire bus
1wire bus <id> Print the temperature value (°C) read from 1-Wire device <id>
1wire ttl<n> Print temperature (°C) and humidity (%) values read from the
MaxDetect 1-Wire sensor on TTL<n> (<n>=1..4)
wiegand <n> Wait for data to be available on Wiegand interface <n> (<n>=1|2)
and print number of bits and value read
wiegand <n> -f Continuously print number of bits and value read from Wiegand
interface <n> whenever data is available
25
Iono Pi User Guide
