-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jon Ringle wrote: > On Thursday, May 10, 2007 7:56 AM, Andrew Lunn wrote: >> On Wed, May 09, 2007 at 03:12:29PM -0400, Jon Ringle wrote: >>> Has anyone implemented the ability to have diag_printf() messages be >>> sent to a remote syslog server in Redboot/ecos? >> You will have to be careful when doing this. diag_printf() uses a very >> simple polled IO, blocking serial device driver. The idea is that it >> should always work, in any context. So you can do a diag_printf() in >> an ISR or a DSR, not just a thread. It is also guaranteed the output >> will be out the serial port before diag_printf() returns. > > How is this guaranteed if I connect to Redboot on tcp port 9000?
RedBoot uses a polled TCP connection, thus when you make a call to diag_printf() that channels through RedBoot, it _will_ complete at the receiver before continuing. Interrupts are off during this time, so it's safe even in ISR/DSR context. Note: there can be issues if you try to send such messages from within the network stack/drivers and these are routed directly to the serial console, not over the network. - -- - ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world - ------------------------------------------------------------ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFGQzHmmaKbSsQGV8ARAi/bAKCl+mxgKW8WWJMtlAcTJRtUEjAm9gCfcdVS 6rewRB3A4yidtlhn+XxGPiY= =mn0u -----END PGP SIGNATURE----- -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
