How to direct ECG graph data to mat load file .

I want know that how to create mat load file from Arduino to MATLAB live data .i want to code for this .

Answer 1

[Ayush Aniket]

Hi Mohidul,

I understand that you would like to create a .mat file from live data received from an Arduino in MATLAB. There are several steps required to perfrom this task as shown below:

1. You can use MATLAB's serialport function to establish a connection with the Arduino.

% Define the serial port and baud rate (adjust as needed)
port = "COM3"; % Replace with your Arduino's port
baudRate = 9600;

% Create a serial port object
arduinoObj = serialport(port, baudRate);

Refer the following documentation link to read more about the serialport function: https://www.mathworks.com/help/matlab/ref/serialport.html

2. The next step is to continuously read data from the Arduino using readline or read functions and store it, as shown in the following documentation link: https://www.mathworks.com/help/matlab/ref/serialport.readline.html#mw_1fc54a67-f7b2-4765-8f8c-58f998a104f9

% Initialize an array to store data
data = [];

% Define the number of data points to collect
numDataPoints = 100; % Adjust based on your requirements

% Collect data from Arduino
for i = 1:numDataPoints
    % Read a line of data from the Arduino
    rawData = readline(arduinoObj);
    
    % Convert the data to a numeric value (assuming it's numeric)
    numericData = str2double(rawData);
    
    % Append to the data array
    data(end + 1) = numericData; %#ok<AGROW>
end

% Close the serial port
clear arduinoObj;

3. Finally, you need to use the save function to store the accumulated data in a .mat file.

% Save the data to a .mat file
filename = 'arduinoData.mat';
save(filename, 'data');