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Forum Index : Microcontroller and PC projects : Rs 232 / 115200 baud

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plasma
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Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 11:14pm 30 Nov 2012

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Hi,
Ive testet 115200 baud on the duinomite with no luck.
57600 baud runs fine , 115200 give me wrong strings such like xxxxxxxx

Have anybody testet the maximite with this baudrate ? Maybe its only on duinomite ?

Greg Fordyce
Senior Member

Joined: 16/09/2011
Location: United Kingdom
Posts: 153

Posted: 05:54am 01 Dec 2012

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MM/CMM can only do 19200 baud, for higher rates you have to use the Duinomite. Why it's not working for you, I don't know, I only have a MM & CMM.

CircuitGizmos

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Joined: 08/09/2011
Location: United States
Posts: 1425

Posted: 06:01am 01 Dec 2012

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Isn't 115200 specific to com3/4 only? Are you using com1/2?

Micromites and Maximites! - Beginning Maximite

plasma
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Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 01:00pm 01 Dec 2012

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hi ,
i use

open "COM4:57600,2048" as #1 <-works
open "COM4:115200,2048" as #1 <--- false

bigmik

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Joined: 20/06/2011
Location: Australia
Posts: 2914

Posted: 03:03pm 01 Dec 2012

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plasma said hi ,
i use

open "COM4:57600,2048" as #1 <-works
open "COM4:115200,2048" as #1 <--- false

Hi Plasma,

At that sort of speed I would expect that you might/would need some form of handshaking in effect.. CTS/RTS handshaking is hardware. XON/XOFF is software

I haven't used RS232 on any `mite so I cant be more helpful.. sorry.

Regards,

Mick

Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<

vk4tec

Senior Member

Joined: 24/03/2012
Location: Australia
Posts: 239

Posted: 07:53pm 01 Dec 2012

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Serial comms is implemented in bit bang and hardware UART on some of the mites.

I have had no problems running PIC at higher speed in assembly.

Can I ask is there any reason why you need such a high speed ?

- Andrew -

Andrew Rich VK4TEC
www.tech-software.net

plasma
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Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 01:21am 02 Dec 2012

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it looks like a real rts/cts thingy ,you are right bigmik.
at vk4tec : ill create a remote control with the multiwii protocoll.
i use the maximite/duinomite for rapid developing.
the remotecontrol is for my quadcopter toy :

http://www.youtube.com/watch?v=POc8vGSmB2M&feature=plcp
it will run on android/ios/win or mac pc.
maximite is usefull to test the remote controll soft/hardware.

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