MATLAB: Send data continuously

real timeusb

how to send data every 10 millisecond continuously with serial communication? thanx

Hi Paskah,

you can use timers in Matlab to send continously data to your serial device.

t = timer ;
set(t,'ExecutionMode','fixedRate');
set(t,'Period',0.01);
set(t,'TimerFcn',{@mytimer_serial, handles});
start(t)

In the mytimer_serial function you can fire the command to the serial line. But please be careful about the precision as Walter already stated.

Gerd

       curfig = gcf;
       cp = @(src,event) get(curfig,'currentpoint');

But once you have fetched it, what are you going to do with it?

You can use MATLAB timers in this way :

% Create a timer object
 t=timer;

Set execution mode of the timer object to fixedRate, fixedDelay or fixedSpacing to execute your call back repeatedly

 set(t,'executionMode','fixedRate');

Specify the function handle or the command you want to be executed. In your case, for sending messages over a ROS topic , use send :

set(t,'TimerFcn','send(pub,msg)');

Set the frequency or period(in seconds),at which the timer callback function is called

% To publish the message at a rate of 50 times per second 
set(t,'Period', 0.02);
% Start the timer
start(t);

ROS message msg is then sent periodically(every 0.02 seconds). To stop the timer:

stop(t);

Delete the timer object after usage

delete(t);