![]() ![]() Run stty again after using minicom, and you'll notice the settings are set to what the program was using. In this situation, sending the commands cat or echo to the port will either produce garbage or not work at all. These are probably different than what you will need to make your connection. If you have done it right after booting the computer and before running any other program like minicom, the communication settings will be at their default settings. You can query the communication settings using the stty program like this: stty < /dev/ttyS0 Notice that once you run a program like minicom, the port is left with the settings that minicom used. If it weren't set up appropriately, the cat and echo commands would not do for you what you might have expected. To gain remote access while using Phar Lap ETS, you must use the serial connection technique.The main reason why you need any program like minicom to communicate over a serial port is that the port needs to be set up prior to initiating a connection. Please refer to the Using the Reset Button section of the NI myRIO-1900 User Guide and Specifications document for more information. For example, you can communicate with the myRIO in safe mode using the built-in UART lines. For more detailed information concerning communicating with your device directly, please refer to its specifications documentation or user manual. NI Linux Real-Time OS devices feature different serial interfaces and consequently have different console output methods. As connecting to your device via SSH only requires a network connection, NI recommends using SSH as your primary shell access method. The SSH method relies solely on the device's network connection, but the serial method requires a null-modem cable and the appropriate type of serial port. The NI Linux Real-Time Operating System provides access to the Linux shell via secure shell (SSH) and serial communication. Note: The screenshots in this article use PuTTY, a third-party Telnet and SSH client, although any terminal client can be used. Enter your account's password when prompted, and you will be logged into the shell.You can login with the admin account and any other account you have configured to have the RemoteShell permission using the NI Web-Based Configuration and Monitoring tool.For example, the cRIO-906x outputs at 115,200 bits per second, so the connection read speed needs to match. Verify that the connection read speed matches your device's output rate.Open your terminal client and specify a serial connection.Connect a null-modem cable to both your computer's and your target's RS-232 port. ![]() Check the box by Console Out in the Startup Settings window.You may have to log in to your controller to access its settings (the default username is admin, and the default password is blank).To communicate with your device using a null-modem cable, please complete the following steps: Some cRIOs feature an RS-232 port, which allows us to use commonly available null-modem serial cables to access the Linux shell. Enter your account's password when prompted, and you will be logged into the shell​.You can login with the admin account and any other account you have configured to have the RemoteShell permission with the NI Web-Base Configuration and Monitoring tool.SSH uses TCP port 22 by default, so please ensure that this port has been selected.Add your target's IP address or Host Name in the appropriate destination field.Open your terminal client and specify a SSH connection.Save your changes and the target will reboot.Check the box by Enable Secure Shell Server (sshd) in the Startup Settings window.You may have to log in to your controller to access its settings (the default username is admin, and the default password is left blank).Open NI MAX and find your device under Remote Systems.Power on and connect your device to your network or directly to your development computer.In order to communicate with your device using either of the methods below, you must have a terminal client installed on your computer. ![]()
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