RE: Serial Port Problems
From: Claes (Claes_at_discussions.microsoft.com)
Date: 01/20/05
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Date: Thu, 20 Jan 2005 07:53:01 -0800
I have a similar problem with this PDA. It's not PPC2003 but the rz1715
causing the trouble.
In my application bytes have to come in in groups of at least 4 bytes. Fewer
bytes or too much pauses between them result in discarding. This is probably
not a baudrate related issue since I tried at different baudrates all with
same results. I think it has something to do with a bug in the serial driver.
The UART FIFO of the Samsung S3C2410 can be configured to generate an
interrupt when there's 4 bytes in it so there could be a connection to this
problem.
"C Programmer" wrote:
> I am attempting to port an application that uses the raw IR port. The
> program works fine on PPC2002 and before. On the IPAQ rz1715
> (PPC2003) it will transmit, but not receive. It seems to be
> associated with UNICODE as I have a program that sends and receives
> UNICODE and it works both sending and receiving. This program is the
> CECHAT program from Boling's fine book.
>
> I am using eVC ver 4.0 with service pack 4, I have tried several other
> versions and they give me the same problem. The code uses the
> standard CREATFILE, WRITEFILE and READFILE at 9600 bps. Bolings
> version used 19200 but the device I have to communicate with uses 9600
> in raw IR mode.
>
> I thought I read somewhere that Win CE programs were upward
> compatible. Most seem to be, but maybe I am just being naive about
> the serial I/O capability.
>
>
>
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