[Beagle Bone] Sending commands through UART?
Shane | Xenland
device hooked up to the UART TX on the beagle bone?
I have changed the pin/mux to "transmit" mode so all i need is the
couple of lines of code for sending commands through the perfferably
the terminal.
I tried out this tutorial:
http://www.gigamegablog.com/2012/01/22/beaglebone-coding-101-using-the-serial-and-analog-pins/
But it didn't say specifically what the terminal commands were it was
only in python and the python script wasen't exactly included with
this tutorial. I've looked at general Linux Kernel and Angstrom
specific commands for UART but little success... i need some direction
thanks everyone!
Steve Galle
minicom -o -b 57600 -D /dev/ttyO1
Steve
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Shane | Xenland
the following....
Welcome to minicom 2.5
OPTIONS: I18n
Compiled on May 2 2011, 10:05:24.
Port /dev/ttyUSB0
Press CTRL-A Z for help on special keys
How do I type commands in here? All i see is the Help scren by
pressing Ctrl-a then pressing Z
On Feb 9, 6:32 pm, Steve Galle <stevega...@gmail.com> wrote:
> When I was testing the connections for the compass and gps, I used minicom. You'll want to specify the -o option so it doesn't try to initialize a modem. So, for uart1 running at 57600bps:
>
> minicom -o -b 57600 -D /dev/ttyO1
>
> Steve
>
> On Feb 9, 2012, at 6:09 PM, Shane | Xenland wrote:
>
>
>
>
>
>
>
> > What are the linux shell commands to send commands to for example a
> > device hooked up to the UART TX on the beagle bone?
>
> > I have changed the pin/mux to "transmit" mode so all i need is the
> > couple of lines of code for sending commands through the perfferably
> > the terminal.
>
> > I tried out this tutorial:
Steve Galle
Steve
Shane | Xenland
alternative called CuteCom it worked perfect! Thanks for the help
either way buddy :D
Sid Boyce
I have been using it for at least 12 years.
You fire it up configure the port to /dev/ttyUSB0 etc. and you are done.
Regards
Sid.
On 10/02/12 18:14, Shane | Xenland wrote:
> It let me open up minicom and showed me a screen that something like
> the following....
>
> Welcome to minicom 2.5
>
> OPTIONS: I18n
> Compiled on May 2 2011, 10:05:24.
> Port /dev/ttyUSB0
>
> Press CTRL-A Z for help on special keys
>
> How do I type commands in here? All i see is the Help scren by
> pressing Ctrl-a then pressing Z
>
> On Feb 9, 6:32 pm, Steve Galle<stevega...@gmail.com> wrote:
>> When I was testing the connections for the compass and gps, I used minicom. You'll want to specify the -o option so it doesn't try to initialize a modem. So, for uart1 running at 57600bps:
>>
>> minicom -o -b 57600 -D /dev/ttyO1
>>
>> Steve
>>
>> On Feb 9, 2012, at 6:09 PM, Shane | Xenland wrote:
>>
>>
>>
>>
>>
>>
>>
>>> What are the linux shell commands to send commands to for example a
>>> device hooked up to the UART TX on the beagle bone?
>>> I have changed the pin/mux to "transmit" mode so all i need is the
>>> couple of lines of code for sending commands through the perfferably
>>> the terminal.
>>> I tried out this tutorial:
>>> http://www.gigamegablog.com/2012/01/22/beaglebone-coding-101-using-th...
>>
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot,
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks
Shane | Xenland
now if i wanted to send commands through UART with say something like
Java, How would I go about doing that? Does java natively support uart
stuff? Will I require any libraries?
vincent mayer
It is opensource and compatible with sun.comm from sun(oracle)( which
it seems it's not being supported anymore...)
if you have debian or ubuntu install it from aptitude
sudo apt-get update
if you havent installed java do
sudo apt-get install openjdk-6-jre openjdk-6-jdk
for the library do
sudo apt-get install librxtx-java
and test it with the examples of http://rxtx.qbang.org/wiki/index.php/Examples
if you have an error like: lib not found
do this
sudo cp /usr/lib/jni/librxtxSerial-2.2pre1.so /usr/lib/jvm/java-6-
openjdk/jre/lib/arm
sudo mv /usr/lib/jvm/java-6-openjdk/jre/lib/arm/
librxtxSerial-2.2pre1.so /usr/lib/jvm/java-6-openjdk/jre/lib/arm/
librxtxSerial.so
sudo cp /usr/share/java/RXTXcomm-2.2pre2.jar /usr/lib/jvm/java-6-
openjdk/jre/lib/ext
sudo mv /usr/lib/jvm/java-6-openjdk/jre/lib/ext/RXTXcomm-2.2pre2.jar /
usr/lib/jvm/java-6-openjdk/jre/lib/ext/RXTXcomm.jar
or whatever the version of rxtx look it up in /usr/share/java/ and /
usr/lib/jni/
Regards
Vincent.
On Feb 12, 3:21 am, "Shane | Xenland" <midnightspec...@gmail.com>
wrote:
ealo...@gmail.com
I'm trying to use this library and I got configure it in a virtual machine with Debian installed. I'm using Eclipse IDE and created a java project. I have also included the RXTXcomm jar as a library in the build path. I tried to run an example to obtain a list of comm serial ports available, but when I run the program I don't have any error, just a warning:
Java HotSpot(TM) Client VM warning: You have loaded library /usr/lib/jvm/java-7-oracle/jre/lib/i386/librxtxSerial.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version = RXTX-2.1-7
Experimental: JNI_OnLoad called.
Does it tell you something I missing or doing in a wrong way? I can't find that command execstack in the shell nor how to enable the stack guard.
I hope you can help me out. Thanks in advance!
Regards!