Re: Working serial port.
Patrick McNamara <wpmcnamara-/[email protected]>
| Newsgroups | gmane.linux.uclinux.actiontec |
|---|---|
| Message-ID | <[email protected]> |
Ok, I've verified the functionality of Bruce's circuit, exluding the reset part. As a side note, many manufacturers are now making single gate logic devices. See below for sigle gate inverters. http://focus.ti.com/docs/prod/folders/print/sn74lvc1gu04.html Patrick M --- "Bruce D. Lightner" <lightner-2huV/[email protected]> wrote: > Patrick, > > > I have a working serial interface sitting on a breadboard in my lab. > > Good work! > > > One big note: You must have some sort of reset circuit for the UART. A > > simple power on will not suffice, the Actiontec will not see it. > > Can't we assume that the Actiontec "reset" signal (i.e., RST#) from J5 > will do the job for the UART? > > > http://www.supersecret.org/actiontec/serial_boot.jpg > > http://www.supersecret.org/actiontec/breadboard.jpg > > > > The circuit I'm currently working with is a duplication of what is on > > the "official" daughter card. If I get a chance this evening, I'll > > re-wire it to follow Bruce's schematic and verify that. > > That would be great! > > > Bruce: In answer to your "Why attach a GPS?" question. I'm going to > > turn one of these units into a time server for my network. > > Well, it seems to me that I should probably give you one of these for your > trouble... > > http://trl.trimble.com/dscgi/ds.py/Get/File-22183/ > > We get them pretty cheap at Networkcar (http://www.networkcar.com/). > > It should fit inside the Actiontec enclosure. > > Best regards, > > Bruce > > -- > Bruce D. Lightner > Lightner Engineering > La Jolla, California > Voice: +1-858-551-4011 > FAX: +1-858-551-0777 > Email: lightner-2huV/[email protected] > URL: http://www.lightner.net/lightner/bruce/ > > __ > ActionHack Mailing List - ActionHack-W7/[email protected] > http://www.express.org/mailman/listinfo/actionhack > http://www.embeddedlinuxinterfacing.com/wiki.php/ActiontecDualModem __________________________________ Do you Yahoo!? Yahoo! Search - Find what youre looking for faster http://search.yahoo.com __ ActionHack Mailing List - ActionHack-W7/[email protected] http://www.express.org/mailman/listinfo/actionhack http://www.embeddedlinuxinterfacing.com/wiki.php/ActiontecDualModem