On 1/14/07, Roberto Spadim <[EMAIL PROTECTED]> wrote: > I was thinking about an network of ds2480 > Could we implement something like > computer <=> rs485 <=> rs232 <=> ds2480 > rs232 <=> ds2480 > > we will need a rs485 <=> rs232 converter, or a rs485<=>i2c converter > (using i2c), we will need an network protocol too > i was thinking about > > DEVICE.FUNCTION.DATALENGTH.DATA.CHECKSUM (from DEVICE to DATA) > (1 byte).(1 byte).(1 byte).(0-255 bytes).(1 or 2 bytes) > function could be > write > read > i2c functions (reset and others..) > > we will need an microcontroler conversor, i could build an serial<=>i2c > (i have some pic16f77A here, have 1 usart and 1 i2c and many I/O (32pins)) > what you think? thnkx > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys - and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers > Hello! That's not so daft as ye might think. (To quote someone of my acquaintance.) In fact a company based over in Ottawa Il, B&B Electronics, sells something similar. The idea is that you use a chain of RS485 or RS422(423) based networking systems to link your R232 devices.
Problem now becomes one of tagging and such like to identify who is whom. I do not think this would lend itself to One-Wire however the basic layout is too confusing as is. Granted we have our own standards to explain how everything works, but on that level we are better sticking with what does work. And that requires using the DS2409 coupler to arrange for the appropriate branches. -- Gregg C Levine [EMAIL PROTECTED] "This signature was once found posting rude messages in English in the Moscow subway." ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
