2014-10-12 19:22 GMT-03:00 Paul Colquhoun <paul...@andor.dropbear.id.au>:
> On Sun, 12 Oct 2014 16:42:22 Kerin Millar wrote: > > > On 12/10/2014 13:08, meino.cra...@gmx.de wrote: > > > > Hi, > > > > > > > > I want to send commands to ttyO1 (serial port on an embedded system). > > > > The commands are one line each and terminated with CRL/LF (aka "DOS"). > > > > > > > > Since this will be done from a batch script, it should be possible > > > > via commandline tools and non-interactively. The serial port is > > > > already setup up the right way. > > > > > > > > I tried > > > > > > > > echo -n"blablabal\x0a\x0d" > > > > > > Firstly, this command is missing the -e switch. Secondly, the order of > > > the control characters is wrong. I would suggest the use of printf as it > > > has fewer pitfalls. > > > > > > # printf '%s\r\n' "command" > > > > > > --Kerin > > > > > > Also, are you sure that the standard output of the script is connected to > the serial port? Try adding "> /dev/tty01" to the end of the echo/printf > command lines and see if that helps. > > > > > > -- > > Reverend Paul Colquhoun, ULC. http://andor.dropbear.id.au/ > > Asking for technical help in newsgroups? Read this first: > > http://catb.org/~esr/faqs/smart-questions.html#intro > > > Or, perhaps, /dev/ttyS0 , or even /dev/ttyUSB0, if it is connected through a USB to serial adapter. By using this approach, you might be able to send a command, but most probably (never tried) will not be able to receive the device's reply. Try minicom, a simple text serial console. Good luck Francisco
