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On Mar 14, 2018, at 7:26 AM, Berge, Matthijs ten wrote: > > Can anyone point me in the right direction where I should start? I already found http://networkupstools.org/docs/developer-guide.chunked/ar01s04.html, but it doesn't give any specific tips for serial communication. For example, which source can I use best as a starting point? > Or does anyone recognize this protocol, and is

Hello all, For an upcoming project I will have to interface with a 24V DC UPS from Siemens (full name: Siemens SITOP UPS500S, manufacturer nr 6EP1933-2EC41). As this device is not listed in the compatibility list, I will have to write my own driver. I already found out, that the UPS has a serial-over-USB interface (USB full-speed, 12 MBps), using an FTDI chip. Over this serial port, it will periodically spit out some 5...

...e the 1.0 board works, the 2.0 boards lock up on boot during the uhub0 bus discovery. It's extremely frustrating :) ... While I can boot without the devices and attach them later, the devices ( logitech usb keyboard, logitech mouse, rio800, samsung CDMA adapter, canon S30 camera, and APC UPS500, are all completely unusable. They attach and detach BUT THAT'S ABOUT ALL !!! Querying them causes the query-er to lock up, and most often timeout. Querying the same device multiple times (wait-fail, wait-fail) will eventually (2+ iterations) cause the box to reset. Tried this with two mo...