Elijah Stanger-Jones / experiment_example_MATLAB

2.74 MATLAB code for Interface to Nucleo

Experiment_Example_MATLAB.m@0:b568b8ff43f2, 2015-08-12 (annotated)

Committer:
pwensing@mit.edu
Date:
Wed Aug 12 08:34:57 2015 -0400
Revision:
0:b568b8ff43f2
Child:
1:30408caaef92
initial commit

Who changed what in which revision?

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pwensing@mit.edu 0:b568b8ff43f2 1 function output_data = Experiment_Example_MATLAB()
pwensing@mit.edu 0:b568b8ff43f2 2 figure(1); clf; % Create an empty figure to update later
pwensing@mit.edu 0:b568b8ff43f2 3 subplot(211)
pwensing@mit.edu 0:b568b8ff43f2 4 h1 = plot([0],[0]);
pwensing@mit.edu 0:b568b8ff43f2 5 h1.XData = []; h1.YData = [];
pwensing@mit.edu 0:b568b8ff43f2 6 ylabel('Posiotion (counts)');
pwensing@mit.edu 0:b568b8ff43f2 7
pwensing@mit.edu 0:b568b8ff43f2 8 subplot(212)
pwensing@mit.edu 0:b568b8ff43f2 9 h2 = plot([0],[0]);
pwensing@mit.edu 0:b568b8ff43f2 10 h2.XData = []; h2.YData = [];
pwensing@mit.edu 0:b568b8ff43f2 11 ylabel('Velocity (counts/s)');
pwensing@mit.edu 0:b568b8ff43f2 12
pwensing@mit.edu 0:b568b8ff43f2 13 % This function will get called any time there is new data from
pwensing@mit.edu 0:b568b8ff43f2 14 % the FRDM board. Data comes in blocks, rather than one at a time.
pwensing@mit.edu 0:b568b8ff43f2 15 function my_callback(new_data)
pwensing@mit.edu 0:b568b8ff43f2 16 t = new_data(:,1); % time
pwensing@mit.edu 0:b568b8ff43f2 17 pos = new_data(:,2); % position
pwensing@mit.edu 0:b568b8ff43f2 18 vel = new_data(:,3); % velocity
pwensing@mit.edu 0:b568b8ff43f2 19 N = length(pos);
pwensing@mit.edu 0:b568b8ff43f2 20
pwensing@mit.edu 0:b568b8ff43f2 21 h1.XData(end+1:end+N) = t; % Update subplot 1
pwensing@mit.edu 0:b568b8ff43f2 22 h1.YData(end+1:end+N) = pos;
pwensing@mit.edu 0:b568b8ff43f2 23 h2.XData(end+1:end+N) = t; % Update subplot 2
pwensing@mit.edu 0:b568b8ff43f2 24 h2.YData(end+1:end+N) = vel;
pwensing@mit.edu 0:b568b8ff43f2 25 end
pwensing@mit.edu 0:b568b8ff43f2 26
pwensing@mit.edu 0:b568b8ff43f2 27 frdm_ip = '192.168.1.100'; % FRDM board ip
pwensing@mit.edu 0:b568b8ff43f2 28 frdm_port= 11223; % FRDM board port
pwensing@mit.edu 0:b568b8ff43f2 29 params.callback = @my_callback; % callback function
pwensing@mit.edu 0:b568b8ff43f2 30 params.timeout = 2; % end of experiment timeout
pwensing@mit.edu 0:b568b8ff43f2 31
pwensing@mit.edu 0:b568b8ff43f2 32 % The example program provided takes two arguments
pwensing@mit.edu 0:b568b8ff43f2 33 v1 = 1.0; % pwm applied for first second
pwensing@mit.edu 0:b568b8ff43f2 34 v2 = 0.0; % pwm applied for second second
pwensing@mit.edu 0:b568b8ff43f2 35 input = [v1 v2]; % input sent to FRDM board
pwensing@mit.edu 0:b568b8ff43f2 36 output_size = 3; % number of outputs expected
pwensing@mit.edu 0:b568b8ff43f2 37
pwensing@mit.edu 0:b568b8ff43f2 38 output_data = RunExperiment(frdm_ip,frdm_port,input,output_size,params);
pwensing@mit.edu 0:b568b8ff43f2 39
pwensing@mit.edu 0:b568b8ff43f2 40 end
pwensing@mit.edu 0:b568b8ff43f2 41
pwensing@mit.edu 0:b568b8ff43f2 42
pwensing@mit.edu 0:b568b8ff43f2 43