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Groups > linux.kernel > #1327239
| From | Andy Shevchenko <andy.shevchenko@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: Data corruption on serial interface under load |
| Date | 2016-02-04 23:40 +0100 |
| Message-ID | <qYAJc-8hU-3@gated-at.bofh.it> (permalink) |
| References | <qYxii-5PO-21@gated-at.bofh.it> <qYyo2-6KS-21@gated-at.bofh.it> <qYAzw-8cq-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, Feb 5, 2016 at 12:24 AM, Andy Shevchenko <andy.shevchenko@gmail.com> wrote: > On Thu, Feb 4, 2016 at 10:06 PM, Peter Hurley <peter@hurleysoftware.com> wrote: >>> Original sample: >>> 00000000: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00 .ELF............ >>> 00000010: 02 00 03 00 01 00 00 00 19 8d 04 08 34 00 00 00 ............4... >>> 00000020: 2c f2 00 00 00 00 00 00 34 00 20 00 04 00 28 00 ,.......4. ...(. >>> >>> Received sample: >>> 00000000: 7f 00 45 00 4c 00 46 00 01 00 01 00 01 00 00 00 ..E.L.F......... >>> 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ >>> 00000020: 02 00 00 00 03 00 00 00 01 00 00 00 00 19 8d 04 ................ >> 2) If you mean the NUL bytes for overruns, I could have some functional mode >> mis-branched in the N_TTY line discipline. > > Yeah, this one. > >> What are the termios settings >> on the rx side? > > I'm using this [1] tool with small patch applied that enables internal > loopback (TCIOM_LOOP). Here are the calls ret = cfsetspeed(&new_term, opts.baudrate); cfmakeraw(&new_term); new_term.c_cflag |= CREAD; new_term.c_cflag &= ~CRTSCTS; new_term.c_cc[VMIN] = 64; new_term.c_cc[VTIME] = 8; ... ret = tcflush(fd, TCIFLUSH); ret = fcntl(fd, F_SETFL, 0); > [1] https://git.breakpoint.cc/cgit/bigeasy/serialcheck.git/ -- With Best Regards, Andy Shevchenko
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Data corruption on serial interface under load Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-02-04 20:00 +0100
Re: Data corruption on serial interface under load Peter Hurley <peter@hurleysoftware.com> - 2016-02-04 21:10 +0100
Re: Data corruption on serial interface under load Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-02-04 23:30 +0100
Re: Data corruption on serial interface under load Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-02-04 23:40 +0100
Re: Data corruption on serial interface under load Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-02-05 00:20 +0100
Re: Data corruption on serial interface under load Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-02-05 00:20 +0100
Re: Data corruption on serial interface under load Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-02-05 02:10 +0100
Re: Data corruption on serial interface under load Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-02-08 10:00 +0100
Re: Data corruption on serial interface under load Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-02-05 00:20 +0100
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