Shell commands
The system comes with a basic shell, offering very limited set of commands.
Prints current date-time string to the output. Requires RTC; if not present, displays error message.
Clear frame buffer
Allows to set a single-character prompt, i.e. prompt $
Prints text to the console, i.e. print Hello!
When running in terminal, it allows to dump a framebuffer content to the output. Useful for testing purposes. Example of use:
