Elijah Stanger-Jones / experiment_example_MATLAB

2.74 MATLAB code for Interface to Nucleo

Experiment_Example_MATLAB.m@7:3816d5dae909, 2020-08-26 (annotated)

Committer:
elijahsj
Date:
Wed Aug 26 19:35:49 2020 +0000
Revision:
7:3816d5dae909
Parent:
4:41f9e216a12d
Child:
8:58d93d7564ed
Updated to include current output

Who changed what in which revision?

UserRevisionLine numberNew contents of line
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
elijahsj 7:3816d5dae909 3 subplot(311)
pwensing@mit.edu 0:b568b8ff43f2 4 h1 = plot([0],[0]);
pwensing@mit.edu 0:b568b8ff43f2 5 h1.XData = []; h1.YData = [];
Patrick Wensing 4:41f9e216a12d 6 ylabel('Position (counts)');
pwensing@mit.edu 0:b568b8ff43f2 7
elijahsj 7:3816d5dae909 8 subplot(312)
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)');
Patrick Wensing 3:ba19438ac09e 12
elijahsj 7:3816d5dae909 13 subplot(313)
elijahsj 7:3816d5dae909 14 h3 = plot([0],[0]);
elijahsj 7:3816d5dae909 15 h3.XData = []; h3.YData = [];
elijahsj 7:3816d5dae909 16 ylabel('Current (volts)');
elijahsj 7:3816d5dae909 17
pwensing@mit.edu 0:b568b8ff43f2 18 % This function will get called any time there is new data from
pwensing@mit.edu 0:b568b8ff43f2 19 % the FRDM board. Data comes in blocks, rather than one at a time.
pwensing@mit.edu 0:b568b8ff43f2 20 function my_callback(new_data)
pwensing@mit.edu 0:b568b8ff43f2 21 t = new_data(:,1); % time
pwensing@mit.edu 0:b568b8ff43f2 22 pos = new_data(:,2); % position
pwensing@mit.edu 0:b568b8ff43f2 23 vel = new_data(:,3); % velocity
elijahsj 7:3816d5dae909 24 curr = new_data(:,4); %current
pwensing@mit.edu 0:b568b8ff43f2 25 N = length(pos);
pwensing@mit.edu 0:b568b8ff43f2 26
pwensing@mit.edu 0:b568b8ff43f2 27 h1.XData(end+1:end+N) = t; % Update subplot 1
pwensing@mit.edu 0:b568b8ff43f2 28 h1.YData(end+1:end+N) = pos;
pwensing@mit.edu 0:b568b8ff43f2 29 h2.XData(end+1:end+N) = t; % Update subplot 2
pwensing@mit.edu 0:b568b8ff43f2 30 h2.YData(end+1:end+N) = vel;
elijahsj 7:3816d5dae909 31 h3.XData(end+1:end+N) = t; % Update subplot 2
elijahsj 7:3816d5dae909 32 h3.YData(end+1:end+N) = curr;
pwensing@mit.edu 0:b568b8ff43f2 33 end
pwensing@mit.edu 0:b568b8ff43f2 34
pwensing@mit.edu 0:b568b8ff43f2 35 frdm_ip = '192.168.1.100'; % FRDM board ip
pwensing@mit.edu 0:b568b8ff43f2 36 frdm_port= 11223; % FRDM board port
pwensing@mit.edu 0:b568b8ff43f2 37 params.callback = @my_callback; % callback function
pwensing@mit.edu 0:b568b8ff43f2 38 params.timeout = 2; % end of experiment timeout
pwensing@mit.edu 0:b568b8ff43f2 39
pwensing@mit.edu 0:b568b8ff43f2 40 % The example program provided takes two arguments
elijahsj 7:3816d5dae909 41 v1 = 0.5; % pwm applied for first second
elijahsj 7:3816d5dae909 42 v2 = 0; % pwm applied for second second
pwensing@mit.edu 0:b568b8ff43f2 43 input = [v1 v2]; % input sent to FRDM board
elijahsj 7:3816d5dae909 44 output_size = 4; % number of outputs expected
pwensing@mit.edu 0:b568b8ff43f2 45
pwensing@mit.edu 0:b568b8ff43f2 46 output_data = RunExperiment(frdm_ip,frdm_port,input,output_size,params);
Patrick Wensing 3:ba19438ac09e 47
pwensing@mit.edu 0:b568b8ff43f2 48 end
pwensing@mit.edu 0:b568b8ff43f2 49
pwensing@mit.edu 0:b568b8ff43f2 50
pwensing@mit.edu 0:b568b8ff43f2 51
elijahsj 7:3816d5dae909 52