Serial port programming

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badsha - 24 Oct 2005 22:54 GMT

Hello,
If I try to set com port to baud rate higher than 115200pbs using
SetCommState() API, it returns with an error. The error code is 87 which
means INVALID_PARAMETER. I tried using 128000 bps and 256000 bps. These rates
are valid in deed.

If you can, please let me know what I should do?

-- Badsha

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Jochen Kalmbach [MVP] - 25 Oct 2005 07:03 GMT

Hi badsha!

> If I try to set com port to baud rate higher than 115200pbs using
> SetCommState() API, it returns with an error. The error code is 87 which
> means INVALID_PARAMETER. I tried using 128000 bps and 256000 bps. These rates
> are valid in deed.
>
> If you can, please let me know what I should do?

The valid baud-rates depends on the serial-port-driver.
If the driver does not support these baud-rates you can either install a
different hardware/driver or you can do nothing (of couse you could
write your own driver)

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Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/

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badsha - 25 Oct 2005 19:25 GMT

Jochen,
Thanks for your reply. You are right. I don't see this error when I ran my
code in another computer that uses serial over USB port. It supports higher
rate.
-- badsha

> Hi badsha!
>
[quoted text clipped - 9 lines]
> different hardware/driver or you can do nothing (of couse you could
> write your own driver)

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Serial port programming

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