RE: BTUART and FFUART
From: Ken Christensen (KenChristensen_at_discussions.microsoft.com)
Date: 01/25/05
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Date: Tue, 25 Jan 2005 06:57:07 -0800
>From your initial descriotion, It would appear that your driver is
functioning. Verify that the UART setting (baud, bpc etc.) match your GPS
device. Also check to see if the gps device requires any handshaking enabled.
The PXA255 BTUART can be configured to handle Bluetooth communications, or
Standard serial communications. The clock for the BTUART is capable of
handling the higher xfer rate needed to Support Bluetooth. The FFUART, or
Full Featured UART supports all standard communications port signals. This
includes all handshake and modem control signals. This too can be used for
your GPS if that is where you desire to connect.
"Dongquan.Z" wrote:
> I am develping a GPS application, and my hareware platform is Hyper PXA255B.
>
> I can successfully load the BTUART driver and it act as the COM1, I have
> programmed a serial application and it works properly if I send and I read!
> for example, when I send string "abcd", and I can receive "abcd". but when
> COM receive GPS data, the received data are incorrect. I have step debug the
> program, and found the received ASCII are not the Ascii codes of the GPS
> sentence character.for example,
> GPS sentence $GPRMI,..., the Ascii code should be 36£¬71£¬80£¬82£¬77£¬73£¬but
> the received Ascii are 93, 101,...
>
> I don't know why!
>
> I also want to know what is the difference between BTUART and FFUART, and if
> I can use BTUART(Bluetooth serial port) to receive GPS information or as a
> standard RS232 port!
>
>
> Thanks.
>
>
>
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