Transfer file from Raspberry Pi hardware to host computer or MATLAB Drive
You can copy a file, such as
.profile, from the
Pi hardware to the MATLAB Current Folder on your host computer. In MATLAB
Online™, the Current Folder is your MATLAB
You can use a wildcard to copy any matching file or files from the Raspberry Pi hardware to your host computer. In MATLAB Online, the folder you copy files to is located in your MATLAB Drive folder. You can specify the path of a destination folder. The folder must exist.
Copy the file from
/home/pi/ and save it to
Online, copy the file from
/home/mwuser/ and save
myfolder in MATLAB
You can copy a file from the Raspberry Pi hardware to your MATLAB Drive folder when connected to it from MATLAB Online. To use your hardware from MATLAB Online, follow the instructions in Connect to Raspberry Pi Hardware Board in MATLAB Online.
When connected to your hardware from MATLAB
Online, the default working directory is
/home/matlabrpi, instead of
/home/pi. Copy a file from this folder to your
Drive folder. Your MATLAB
Drive folder is the default startup folder in MATLAB
Online. View its contents by clicking the Current Folder tab on the
left side of the Command Window.
You can also copy files from other folders on your hardware to MATLAB
Drive. List the files in
ans = 'cap.jpg debug.log Desktop Documents Downloads matlab_online_login.expect matlab-rpi.deb Music Pictures Public python_games Templates Videos'
You can also specify the destination folder in MATLAB
Drive. The destination folder must already exist in your MATLAB
You can connect to the camera board from the MATLAB software, take a photograph, and record video.
Create a connection from the MATLAB software to the Raspberry Pi hardware.
mypi = raspi
Create a connection,
mycam, from the MATLAB software to the camera board, and set the image resolution. The connection
displays the camera board properties.
mycam = cameraboard(mypi,'Resolution','1280x720')
mycam = Cameraboard with Properties: Name: Camera Board Resolution: '1280x720' (View available resolutions) Quality: 10 (1 to 100) Rotation: 0 (0, 90, 180 or 270) HorizontalFlip: 0 VerticalFlip: 0 FrameRate: 30 (2 to 30) Recording: 0 Picture Settings Brightness: 50 (0 to 100) Contrast: 0 (-100 to 100) Saturation: 0 (-100 to 100) Sharpness: 0 (-100 to 100) Exposure and AWB ExposureMode: 'auto' (View available exposure modes) ExposureCompensation: 0 (-10 to 10) AWBMode: 'auto' (View available AWB modes) MeteringMode: 'average' (View available metering modes) Effects ImageEffect: 'none' (View available image effects) VideoStabilization: 'off' ROI: [0.00 0.00 1.00 1.00] (0.0 to 1.0 [top, left, width, height])
Import and display a sequence of 10 snapshots on your computer.
for ii = 1:10 img = snapshot(mycam) imagesc(img) drawnow end
If the image is upside down, change its orientation.
mycam.Rotation = 180
You can use the same approach to change the values of other
Record a 60 second video.
Stop the recording immediately.
Copy the video from the board to your computer.
Delete the video file from the hardware to free up space.
source— Path and name of file on Raspberry Pi hardware
Path and file name on the Raspberry
Pi hardware, specified as a string. You can use either the
absolute path from the root folder, or the relative path from the present
working folder. Use Linux® path and file naming conventions. The default path is
/home/pi/. In MATLAB
Online, the default path is
destination— Path and name of file on host computer
Path and name of file on host computer, specified as a string. If not specified,
getFile uses the MATLAB Current Folder and the current file name. Use the naming
conventions of the operating system on the host computer. This function does
not create new folders. Folders in the path must exist. In MATLAB
Online, this path must be located in MATLAB