Delete file on target hardware
Delete File on Raspberry Pi Hardware
You can delete a file on the Raspberry Pi® hardware.
Delete Multiple Files on Raspberry Pi Hardware
You can delete multiple files on the Raspberry Pi hardware
using a wildcard character,
Delete File on Raspberry Pi Hardware in MATLAB Online
You can delete files on the Raspberry Pi hardware 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. This is the only directory you can delete
files from. Delete a file in
/home/matlabrpi by using the
file name as an input argument.
Capture Images from the Camera Board
Create a connection from the MATLAB to the Raspberry Pi board. If you encounter errors after running the above command, try using
additional arguments (as listed in
raspi) or refer to Troubleshoot Connecting Issues to Raspberry Pi Hardware.
mypi = raspi;
Create a connection,
mycam, from the MATLAB software to the camera board on the Raspberry Pi hardware, 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])
Capture and display a sequence of 10 snapshots on your computer.
for ii = 1:10 img = snapshot(mycam); imagesc(img) drawnow end
Each of the 10 snapshots is the latest image captured by the camera.
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.
filename — File to delete
File to delete, specified as a string. You can delete a file on the Raspberry Pi hardware. When you specify the file name, you can use path
information and wildcards. In MATLAB
Online, you can only delete files in the default working directory,