1
vote
1answer
115 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
96 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
8k 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 ...
1
vote
0answers
230 views

How to get terminal input from keyboard, but output to serial port?

The ARM board computer I am currently working on does not have a working framebuffer terminal due to a buggy kernel. I have managed to follow the instructions at ...
4
votes
2answers
206 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
3k 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: ...