How do I transfer files to or from my Speedgoat Simulink Real-Time target in R2020b and beyond?

After upgrading to MATLAB R2020b, the following Simulink Real-Time functions no longer work in my scripts:

• SimulinkRealTime.openFTP
• SimulinkRealTime.fileSystem
• SimulinkRealTime.copyFileToTarget
• SimulinkRealTime.copyFileToHost

I receive the following error when calling any of them:

Unable to resolve the name SimulinkRealTime.openFTP.

How can I access the file system of my Speedgoat target computer and transfer files to or from my Speedgoat target computer in R2020b or later?

Answer 1

[MathWorks Support Team]

With the removal of the "File Scope" and "From File" blocks from the Simulink Real-Time (SLRT) library in R2020b, manual file transfers to or from the Speedgoat target computer are rarely needed. Consequently, the SLRT FTP APIs referenced above have also been discontinued in that release.

However, both SCP and FTP protocols remain supported in SLRT R2020b and later. You can still transfer files using external tools such as FileZilla, PuTTY's pscp, or by leveraging MATLAB’s 'ftp' and 'sftp' (R2021b+) objects. Always ensure you log in with the 'slrt' user account (with default password 'slrt') rather than 'root' to maintain system integrity. To change the 'slrt' user password, see: Change Password for Target Computer

Despite the continued protocol support, manual file transfers between the host PC and Speedgoat target computer are generally discouraged. Such actions can lead to unpredictable application behavior, particularly if the file system is accessed using the 'root' account.

Instead, we recommend the following alternative workflows based on your specific use case:

Use Case 1: Transferring logged signals to the host PC

The "File Scope" block was replaced by "File Log" in R2020b for logging signal data to a local file on your Speedgoat target computer's SSD. By default, file logs are automatically transferred to the host PC at the end of the run, or they can be interactively imported into MATLAB using the "Import File Log" dialog or the tg.FileLog.import function. For more information about file logging, see:

File Logging Basics: Using File Log blocks to log signal data on a Speedgoat target with Simulink Real-Time R2020b and later

Since R2021a, there is a supported workflow to copy file log data manually from the Speedgoat target computer to a host computer without MATLAB. See the following answer for details:

How can I download file log data manually from my Speedgoat target?

Use Case 2: Transferring input data for the real-time simulation to the target

The "From File" block was deprecated in R2020b in favor of using the root-level input port data Simulink feature to supply input data for your real-time simulation. For more details, see the following page:

How can I provide input data to my Speedgoat application without having to rebuild my model with Simulink Real-Time (SLRT)?

Use Case 3: Parameter Sets

To manage the parameter sets on the target, you can import any saved parameter sets from the target to MATLAB with importParamSet, allowing you to edit the parameters as a ParameterSet object. After editing, you can re-export them to the target using exportParamSet. For more details on parameter set workflow, see the following page:

How can I reload my real-time application with the parameters from a previous run with Simulink Real-Time?