RTEMS Tester Kit

[Chris Johns]

On 21/09/2017 03:21, Alan Cudmore wrote:
> Lurking RPi Linux user here..

Nice and thanks for responding.

> Are you talking about having the RPI control the reset line to one or more targets?

Yes. I was thinking about insecure telnet access to pulse a GPIO pin.

> Would a GPIO pin be sufficient for that, or would we need another output?

It could be. I was wondering if we want a board with some signal conditioned IO
so we can match voltages or even have micro-switches to avoid any issues with
the hardware we interface to. I am thinking about 3V3, 5V or some other voltage
plus the ability of the RPi CPU to sink enough current. It would make the kit
more robust and help avoid users killing the RPi or their target. May be a RPi
is cheap enough we do not need to be concerned.

> Also, what would the serial port on the Pi be used for? Would it connect to a
> test target serial port and host the ser2net program?

You could use the serial port on the RPi. I have a RPi running FreeBSD with a
couple of large powered USB hubs and I have many ports attached. The RPi runs
ser2net so I can get remote access to arond 15 ports. Boards like the RPi and
Beaglebone Black have TTL serial pins or headers and you can buy inexpensive TTL
serial to USB cables.

I am still working on rtems-test however the results so far look good. I am now
even wondering if I could group targets together and run tests in parallel to
speed things up.

Chris