How to create a device in linux (details inside)?

Question

linux

I want to connect the screen from Nokia 5110 to Raspberry Pi 3 and to be able to do this:
echo "hello world" > /dev/screen0
How can I do it? Is there any example of writing something like this to work with some external devices?

Answer 1

To connect a peripheral device, you need to use the appropriate driver. There is
a framebuffer driver for this display in linux staging, you can try to connect it. After connecting, if the kernel is built with the fbdev module, the /dev/tty* device should appear, into which text can be printed. There is also such a lib specifically for the Pi.