Need help with storing live data from sensors into array
显示 更早的评论
this is my code. I want to store the incoming data into my array/matrix whichever would do the trick. This keeps overwriting the previous data into the array. I want the data to be added up at the bottom.
I am also getting this problem. "Conversion to cell from uint16 is not possible."
iterate = 0;
while 1
iterate =plus(iterate, 1); %counter
disp(iterate);
Gyro_X = readRegister(MPU9250, GYRO_XOUT_H, 'uint16')
Gyro_Y = readRegister(MPU9250, GYRO_YOUT_H, 'uint16')
Gyro_Z = readRegister(MPU9250, GYRO_ZOUT_H, 'uint16')
pause(1/10);
%Gyro = table(iterate, Gyro_X, Gyro_Y, Gyro_Z);
Gyro = {};
Gyro(i) = [ iterate, Gyro_X, Gyro_Y, Gyro_Z];
end
采纳的回答
Mustafa Abu-Mallouh
2018-12-30
编辑：Mustafa Abu-Mallouh
2018-12-30
If you want to store the values in each row, call out that you want the values to take over all columns of "Gyro". See below:
i = 0;
max_data_len = 10;
% Initialize 'Gyro' with desired dimensions
% - Don't have to but it helps performance
Gyro = zeros( max_data_len , 4 );
while i < max_data_len
i = i+1;
Gyro_X = randi(30,1);
Gyro_Y = randi(30,1);
Gyro_Z = randi(30,1);
% If creating a results array
Gyro(i,:) = [i Gyro_X Gyro_Y Gyro_Z];
end
Another issue is you redefine "Gyro" as an empty cell array every iteration of the loop when you call the following code:
Gyro = {};
This clears the data you originally had stored in the variable. This is also the reason you are getting the "Conversion to cell from uint16 is not possible" error; it is trying to convert your 16 bit integer array into a cell array
更多回答（1 个）
ahmed nebli
2018-12-29
编辑：madhan ravi
2018-12-29
0 个投票
what you need to do is create a vector/matri without defining its size first (e.g.: A=[]; ) then use the command vertcat.
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