Andrew, I think some of the usb to rs232 convererts go this quick, but I don't know if they will do what you want. Cheers.....Mike. ----- Original Message ----- From: "Andrew Kilpatrick" To: Sent: Thursday, April 08, 2004 5:36 AM Subject: PIC: Serial baudrate conversion ideas? > Hi, > > I'm working on a project that requires converting unidirectional > data from one baudrate to another. If anyone has ideas on an elegant > and inexpensive way to do this, it would be appreciated. > > The converter is for a DMX transmitter. DMX is the standard protocol > used in the entertainment industry for controlling lighting equipment > such as dimmers, colour changers, fog machines, etc. It is electrically > RS-485, and the data is 250kbps. > > The crux is that I am interfacing it with an embedded PC using the > RS-232 port which runs at 115.2kbps. Of course there is a bottleneck, > but it's ok because the data being sent is generated less often then > what would be needed to max out the DMX output. > > Here are my current thoughts on a solution: > > - 2 PICs connected together with either parallel or I2C > - a PIC with 2 UARTs (but the only ones are 64TQFP, not nice to solder) > - a PIC controlling a 16550 UART > > Any ideas would be greatly appreciated. > > > Cheers, > > Andrew > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. --- Outgoing mail is certified as Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.648 / Virus Database: 415 - Release Date: 31/03/2004 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.