This is a multi-part message in MIME format.

--===============0141834912==
Content-Type: multipart/related;
	boundary="----=_NextPart_000_004D_01C7A21A.33C1B250"

This is a multi-part message in MIME format.

------=_NextPart_000_004D_01C7A21A.33C1B250
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit

 

Hi all

I am using a 18F6620 to talk to a GPS receiver over a serial port that
speaks NMEA (the default rate for NMEA is 4800 baud).

No problemo all is fine and working well but now I want to use a
new/different GPS receiver that has a default serial speed of 115200 baud.

I tell my compatriots that I might have to clock the device faster (BTW
current PIC clock rate is 4MHz) to do 115200 but it should be no problem to
run the device at a higher baud rate.

So I dig out the section of the data sheet for the baud rate generator but
much to my chagrin I don't see 115200 any where on the sheet..even at the
higher clock rates???????


I do see some rates that are close to 115200 there is what appears to be 96K
but the real rate would be 104.17K and (what heck is this about ???) is this
the close enough for hand grenades setting?

I find it a little hard to believe that a part that can be clocked at 40MHz
doesn't support anything higher that 19.2 in this day and age when most
serial parts support 115.2k (well there is 76.8k on the data sheet but I've
never seen anything that used that rate).

Is it possible to do 115200 with my device or am I SOL with this part?

 

 

 

 

Phillip

Things should be as simple as possible but no simpler

 

 

 

Phillip Coiner

CTO, GPS Source, Inc.

 

 

Your source for quality GNSS Networking Solutions and Design Services, Now!

 


------=_NextPart_000_004D_01C7A21A.33C1B250
Content-Type: image/jpeg;
	name="image002.jpg"
Content-Transfer-Encoding: base64
Content-ID: <image002.jpg@01C7A21A.31EC07F0>
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------=_NextPart_000_004D_01C7A21A.33C1B250--


--===============0141834912==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

--===============0141834912==--