Controlling the i2c management bus of the turing pi with i2c works fine. But it's not easy to remember the correct bit mask for the node. So this commandline easens a little the pain :-)
It's just a wrapper around i2c.
see: https://docs.turingpi.com/cluster-management-bus-i2c
go build
When you run this cmdline from a turing pi node you need to 'lock' this node. Without it you can easily turn off the node where you're running the cmdline(and lock you out)
Node numbering starts with 1
We use the env var TPI_LOCKED_NODES for it. It make sense to place it in /etc/profile.d/locked_nodes.sh
cat /etc/profile.d/locked_nodes.sh
#!/bin/bash
export TPI_LOCKED_NODES="NODENUMBER"
e.g. ignore 1 and 4 for commands
#!/bin/bash
export TPI_LOCKED_NODES="1,4"
# turn off node 2
go-turing-i2c-cmdline turnOff 2
# turn on node 3
go-turing-i2c-cmdline turnOn 3
# turn off all nodes(except locked nodes)
go-turing-i2c-cmdline turnOffAll
# turn on all nodes(except locked nodes)
go-turing-i2c-cmdline turnOnAll
I've just coded it in 2h and just tested it.
! Use with caution :) !