On Tue, 08 May 2007 07:58:20 -0500"r10 kindsofpeople" <r10kindsofpeople@xxxxxxxxxxx> wrote: > I'm having what appears to be overflow problems within the> snd-serial-u16550 driver.> > I'm using 1.0.14rc1.> > When calling "amidi -p hw:0,0,0 -s FILE.SYX" where hw:0,0,0 is the > snd-serial-u16550 port, the data coming from the serial port appears> to be a small fraction (900 bytes) of the total file size (13000> bytes).> > If I repeat the experiment, but send to a USB MIDI port, all is well.> If I send the data to the serial port using calls to > snd_seq_event_output_direct(), and I add a 1 second pause between> every sysex message, all is well (aside from it taking too long).> I'm logging data directly at the PC serial port using another PC, so> I've eliminated the possibility that the serial-to-MIDI hardware is> losing the data.> > My code is using blocking mode, and besides, amidi behaves the same> way as my code.> > I'm hesitant to blame the driver code (especially given that last> time I did this, it was an interrupt configuraiton problem), but I> could use some help figuring out where to look next. Please?> > Are there calls I can use to ensure that the previous message has> gone out before writing the next one? Given the amount of data I'm> sending, should I be using snd_seq_event_output and scheduling the> events on the queue?> > John> > _________________________________________________________________> More photos, more messages, more storage—get 2GB with Windows Live> Hotmail.> http://imagine-windowslive.com/hotmail/?locale=en-us&ocid=TXT_TAGHM_migration_HM_mini_2G_0507> > I think you're more likely to get a response to this on the alsa-develmailing list. As I don't subscribe to that list, perhaps you havealready sent this there. In that case, ignore. :-) -------------------------------------------------------------------------This SF.net email is sponsored by DB2 ExpressDownload DB2 Express C - the FREE version of DB2 express and takecontrol of your XML. No limits. Just data. Click to get it now.http://sourceforge.net/powerbar/db2/_______________________________________________Alsa-user mailing listAlsa-user@xxxxxxxxxxxxxxxxxxxxxxxxxx://lists.sourceforge.net/lists/listinfo/alsa-user
