From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Perry Wang" To: Cc: Subject: RE: [ECOS] LIBC and STDIO Date: Fri, 17 Dec 1999 16:05:00 -0000 Message-id: References: <385A9BA7.DF48BC9@cygnus.co.uk> X-SW-Source: 1999-12/msg00033.html Hi Mr. Larmour, I don't know what did it, but after downloading and setting up the latest CVS source tree, the printf works with "/dev/tty1" thanks for all the help. appreciate it. btw, that gdb/sniffing really sounds impressive. I used to only use it for hacking purpose :) regards, Perry > -----Original Message----- > From: jlarmour@cygnus.co.uk [ mailto:jlarmour@cygnus.co.uk ] > Sent: Friday, December 17, 1999 12:23 PM > To: Perry Wang > Cc: jskov@cygnus.co.uk; ecos-discuss@sourceware.cygnus.com > Subject: Re: [ECOS] LIBC and STDIO > > > Perry Wang wrote: > > > > I do have the serial package enabled.. some of the defines are here: > > > [snip] > > io write to /dev/tty1 or /dev/ser1 directly works fine. > However the libc > > printf doesn't like it. I guess I'm still missing something. Changing > > CYGDAT_LIBC_STDIO_DEFAULT_CONSOLE back to "/dev/haldiag" will > work, but it > > prints out some garbage only GDB will understand. > > I suppose it isn't very helpful for me to say that I just tried it here on > an AEB-1B and (from what I could tell[1]) I could run the libc stdiooutput > test fine. > > Have you tried the other serial line? It could be some conflict > between the > hal diag initialization and the serial driver initialization - we've had > such things happen before. If that doesn't work either, it at least gives > you the chance to debug it (using GDB attached to the first > serial line) to > see what is going on. > > [1] For reasons to long to explain, I connected with GDB over a TCP > connection to a proxy test server, and used an ethernet packet > sniffer since > GDB silently discards anything not in remote protocol packets. Yes, I'm > lazy. > > Jifl > -- > Cygnus Solutions, 35 Cambridge Place, Cambridge, UK. Tel: +44 > (1223) 728762 > "I used to have an open mind but || Get yer free open source > RTOS's here... > my brains kept falling out." || http://sourceware.cygnus.com/ecos > Help fight spam! http://spam.abuse.net/ These opinions are all > my own fault