Re: Serial port question

• Subject: Re: Serial port question
• From: Kenny Millar <email@hidden>
• Date: Tue, 5 Oct 2004 22:27:35 +0100
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Unfortunately the current implementation of the IOSerialFamily (i.e. /dev/tty.*) validates the baud rates and wont allow non-standard rates through. There is currently no workaround for this limitation short of rolling your own IOSerialFamily.

Godfrey

On Oct 5, , at 12:38, Kenny Millar wrote:

I asked this question over on carbon-dev and was directed to this list....

An application I'm writing (in carbon) makes extensive use of a serial port. I'm using a USB-Serial device, which works fine at all 'normal' baud rates.
Does anyone know how to set the divisor for the serial port, so I can use a 'non-standard' baud rate?

Under linux I would do something like this....

sinfo.custom_divisor = sinfo.baud_base / RequiredBaud ;
ioctl(fd, TIOCSSERIAL, &sinfo)

But can't find anything in the ioctl documentation about this type of thing on Mac OS X

Can anyone shed any light on this for me!?!

Fuurther info:
I know the device itself supports the non-standard rates
because I have it working already under, ahem, Windows.

-Kenny
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