JeVois v1.3

Sometimes, opening a serial terminal to connect to JeVois may seem like a lot of work if one just wishes to send one simple command or a short sequence of commands to JeVois.

Instead, you can use the shortcut command jevois-cmd (Linux only for now).

Note: Note that since June 2018 it may be easier to use JeVois-A33: JeVois Inventor graphical user interface. The instructions below do not require JeVois Inventor are are provided in case you do not want to use the Inventor.

Getting started

Connect JeVois to a host computer
Review Command-line interface user guide to get an idea of which commands you can send to JeVois

Using shortcut shell command jevois-cmd

JeVois v1.3

Under Linux, the jevois package provides the command jevois-cmd in /usr/bin of the host computer, which can be executed directly in any terminal on the host computer (as opposed to being run in the JeVois command-line interface after opening some serial terminal to it). Use it as follows:

jevois-cmd help

Connects to JeVois using the serial-over-USB port, issues the command help to JeVois, collects an displays the results returned by JeVois.

Any valid JeVois command-line command can be sent. For example:

jevois-cmd setpar cpumax 1200

should return

OK

and a subsequent

jevois-cmd info

should show the updated CPU frequency of 1200 MHz as follows:

INFO: JeVois 1.3.0
INFO: Linux version 3.4.39
INFO: CPU: 1200MHz, 28C, load: 0.98 0.53 0.22 1/59 86
INFO: MemTotal: 238452 kB, MemFree: 170188 kB
INFO: OUT: YUYV 640x300 @ 60fps CAM: YUYV 320x240 @ 60fps MOD: JeVois:DemoSaliency
OK

Note: If JeVois complains about errors but you know that your command is correct, maybe the Linux ModemManager is running on your host computer and is trying to configure JeVois as a modem, sending it all kinds of commands that JeVois is not interested in. See Connecting to JeVois using serial-over-USB: Linux host for more guidance on this.; jevois-cmd is a simple shell script. Feel free to look at it. You may be able to create equivalents of that script for Mac and Windows. If so, please contribute them so that others can enjoy your scripts!; On Mac, you can try a simple echo info > /dev/cu.usbmodem* and then cat /dev/cu.usbmodem* to see the results (issue a CTRL-C once you have seen all the results you needed to see).