how to set baud rate in uart4

chia te chu

Intellectual 425 points

I use am335x custom board.

The baud rate of uart4 is 9600,but I need the uart4 work in the baud rate of 115200.

I need to revise which file to make uart4 can work in 115200 baud rates.

thz u

over 12 years ago

0 Biser Gatchev-XID over 12 years ago

TI__Guru**** 393215 points

When asking this sort of question you should at least mention what software you are using, and what version.

0 Miroslav Kiradzhiyski XID over 12 years ago

TI__Mastermind 25235 points

Hi,

What software are you using?

In linux, you typically estabilish serial connection using a terminal emulator software (minicom, microcom, picocom). These applications support setting the baudrate.

Best regards,
Miroslav

0 chia te chu over 12 years ago in reply to Miroslav Kiradzhiyski XID

Intellectual 425 points

The TI-Android-ICS-4.0.3 is used in am335x board.

The linux-kernel is 3.2.

But the mincom can not be used in the board.

I need to configured /dev/ttyO4 in the am335x board.

0 Miroslav Kiradzhiyski XID over 12 years ago in reply to chia te chu

TI__Mastermind 25235 points

Yes, minicom is too large for an embedded application.

The "microcom" application is part of the "busybox" package, which should be included in your root file system.

Here is how to use it:

root@am335x-evm:~# microcom
BusyBox v1.20.2 (2013-06-25 16:43:45 CDT) multi-call binary.

Usage: microcom [-d DELAY] [-t TIMEOUT] [-s SPEED] [-X] TTY

Here is an example: microcom -s 115200 /dev/ttyO4

Best regards,
Miroslav

0 chia te chu over 12 years ago in reply to Miroslav Kiradzhiyski XID

Intellectual 425 points

Is the microcom linux version or android version?

Can the linux version of microcom be used in the am335x board?

0 Miroslav Kiradzhiyski XID over 12 years ago in reply to chia te chu

TI__Mastermind 25235 points

microcom is part of the busybox package, which has been pre-compiled for the AM335x so you should be able to use it under both Linux and Android running on the am335x processor.

Best regards,
Miroslav

0 chia te chu over 12 years ago in reply to Miroslav Kiradzhiyski XID

Intellectual 425 points

I use the microcom in am335x board, but it can not be used.

0 Miroslav Kiradzhiyski XID over 12 years ago in reply to chia te chu

TI__Mastermind 25235 points

The busybox package is missing.

Attached is the busybox binary: 4336.busybox.zip

Push it to your device and use it like this:

busybox microcom -s 115200 /dev/ttyO4

Best regards,
Miroslav

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how to set baud rate in uart4