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
