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Article #6659

Re: non-standard Baud rates

#6659
From: Ed Mulroy [TeamB]
Date: Fri, 22 Apr 2005 00:16
23 lines
2129 bytes
The UART chip or IC macro operates off of a fixed frequency.  The baud 
rate is set by loading a divisor for that frequency.  As the highest 
possible frequency is 115,200 the closest you can get to 50,000 is 
57,600 baud.  Given the vagarities of serial communications that has a 
good probability of working with 50,000 at the other end.  Just pay 
close attention to whatever check characters, check sums or crc's the 
other end uses.

If you do this with the Windows API, assigning the value CBR_57600 to 
the BaudRate DWORD member of the DCB structure is the setting of which 
I am speaking.

.  Ed

> Ron Sawyer wrote in message
> news:4267f055$1@newsgroups.borland.com...
>
> Will the API allow me to set non-standard baud rates?  I have
> to write a program to monitor a line set at baud 50000.  My
> third-party library won't allow 50000 and I'm starting to fear
> that I will have to break down and do this via windows API.
> Will the API allow this, or will I be spinning my wheels?
> (Dunno why they used 50000 baud and I have not control over that)
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From: "Ed Mulroy [TeamB]" <dont_email_me@invalid.com>
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Subject: Re: non-standard  Baud rates
Date: Thu, 21 Apr 2005 20:16:41 -0400
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