Add recipe for hub-ctrl and add it to rpi3 gateway image

iot-lab / iot-lab-yocto

IoT-LAB Yocto repository

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Add recipe for hub-ctrl and add it to rpi3 gateway image #21

Closed aabadie closed 6 years ago

aabadie commented 6 years ago

This PR adds a new recipe for hub-ctrl. This tools can be used to control the USB port on a RPI3 and thus can be useful to be able to power cycle an open node plugged on a RPI3.

For example:

use the following command to power off all USB ports:
```
hub-ctrl -h 0 -P 2 -p 0
```
use the following command to power on all USB ports:
```
hub-ctrl -h 0 -P 2 -p 1
```

The tool is already installed on nrf52dk-2 and st-lrwan1-1 in devsaclay.

aabadie commented 6 years ago

Some notes: hub-ctrl requires admin rights to control the USB ports and the gateway code runs under www-data. To solve this limitation, the sudo package is now added to the rpi3 gateway image and admin right are given to www-data, only for the hub-ctrl command. Tested and works.

aabadie commented 6 years ago

Let's move forward on this before next week.