Iono PiにはI/Oをいじる公式のライブラリが用意されています。
実際のところ
gitのある状態で
$ git clone --recursive https://github.com/sfera-labs/iono-pi-c-lib.git
$ cd iono-pi-c-lib $ sudo chmod +x build $ sudo ./build
$ 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
