1
vote
0answers
69 views

Enable COM ports

I have a costume built computer in which I added two extra COM ports. But I don't know the exact name they were given (e.g. ttyS32). I actually tested all 32 found ports in my computer, and non seem ...
1
vote
0answers
344 views

Serial Ports Not Working

I am having issues getting my console DB9 serial ports to work on an Ubuntu 14.04 LTS machine. I have a Megabyte motherboard, an Intel Pentium processor, and a 2-port DB9 serial card. I am ...
2
votes
1answer
669 views

serial-port thermal printer communication

I am trying to establish low level communication with an Epson tm-t88iv thermal printer via shell but I can't figure it out. I'm working on ubuntu 13.10 64 bit with a Dell vostro 1510. I have it ...
1
vote
0answers
210 views

rs232 to usb not working

I have a konig rs232 serial to usb adapter (no FTDI chip), but when I try to connect to a cisco switch/router (via Putty, screen, minicom....), sometimes it just shows nothing (But it is connected ...
2
votes
1answer
12k views

cannot open /dev/ttyS0: Permission denied, but in dialout group

I am trying to use my 9 pin serial port to connect my automotive ECU to my computer (megasquirt controller). I've done this before with Ubuntu 10.04 but now that I've just upgraded to 12.04 it simply ...
4
votes
2answers
237 views

why do I have 32 ttyS

I seem to have ttyS0 all the way to ttyS31, the only real (well virtual but at least they do someting) serialports on my machine are ttyACM0 and rfcomm0, what are all these ttyS's for?
7
votes
3answers
4k views

Set up a Serial-to-Ethernet Converter With a Virtual Serial Port

I have a '3one data' brand serial-to ethernet converter, that plugs into a serial device at one end, and allows bidirectional communications with the device over an ethernet connection, like this: ...