I am doing pure research on TOS threading solutions. There is no
particular application at the moment. I was drawn to tosthreads as a
reference threading solution because of its inclusion in the
distribution, but ran into trouble when developing a test application
with it.
I am relatively new to TOS, and one of the things that appeals to me
about tosthreads is the way it permits the application developer to make
blocking calls within a thread. The resulting elimination of the need
for many callbacks seems to simplify the code.
Thanks so much for your feedback!
Stephen
On 2/14/2014 4:05 PM, Eric Decker wrote:
TinyOs is a low level event driven embedded OS. Predominately
applications use a combination of interrupt level and the TinyOS task
level which is the middle layer (tosthreads is a lower background layer).
I am not aware of any other threaded implementations that are
equivilent to tosthreads.
the question I originally asked is why do you need tosthreads? what
problem are your solving.
I understand that you are researching it. But what problem are you
trying to solve and why is tosthreads a match for solving that problem.
On Fri, Feb 14, 2014 at 12:52 PM, Stephen Schaub <[email protected]
<mailto:[email protected]>> wrote:
Thanks for the info about tosthreads not being maintained. That's
helpful to know.
I would be interested to know if there are any competitively
multithreaded solutions for TOS that are being actively supported.
Stephen
On 2/14/2014 2:33 PM, Eric Decker wrote:
tosthreads isn't being actively maintained.
and it sounds like you have found a bug. so you will probably
have to debug it to figure out what is going on.
do you have an environment where you can actively observe the
machine state? ie. a jtag environment?
On Fri, Feb 14, 2014 at 4:41 AM, Stephen Schaub
<[email protected] <mailto:[email protected]>> wrote:
Eric,
I am researching TOS threading approaches. I thought I would
start with tosthreads since it is included in the distribution.
On 2/13/2014 10:42 PM, Eric Decker wrote:
why are you using tosthreads?
On Thu, Feb 13, 2014 at 11:12 AM, Stephen Schaub
<[email protected] <mailto:[email protected]>> wrote:
I have not had success using TOSThreads to write to the
Uart interface.
So, I devised the following test.
Using tinyos-2.1.2 distribution, I performed the
following test with two
telos motes:
cd apps/tosthreads/apps/RadioStress
make install,1 telosb threads bsl,/dev/ttyUSB1
The mote's led's indicate that it is transmitting.
cd apps/tosthreads/apps/BaseStation
make install,2 telosb threads bsl,/dev/ttyUSB0
The mote's led's indicate that it is receiving.
export MOTECOM=serial@/dev/ttyUSB0:telosb
java net.tinyos.tools.Listen
Output to the console is a stream of bad packet messages:
serial@/dev/ttyUSB0:115200: bad packet
serial@/dev/ttyUSB0:115200: bad packet
...
Now, I replace the threaded version of BaseStation with
the event-based one:
cd apps/BaseStation
make install,2 telosb bsl,/dev/ttyUSB0
Output from java net.tinyos.tools.Listen now appears
correct.
Can anyone confirm this behavior? Is this a known
problem with the
BaseStation threads demo?
Stephen
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Eric B. Decker
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Eric B. Decker
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Eric B. Decker
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