stm32f411re nucleo board communication with raspberry pi 4b.

[Sreejasailu]

i have successfully imported the zip file onto the stm32cubeide. and i want to do the communication between stm32f4xx and raspberry pi4b via uart-usb. what are the changes to be made.?
How do the communication work.?
i have done the raspberry pi 4 part, and i only need to communicate through the stm32f411re nucleo board. i want two way communication. could you please help with this.
and i want to say that y i didn't upload the bin file, but trying to do this is, i want to send random data both ways with transmit and receive functions in it. and to be precise transmit will be integer value, receive will be a string value.

[terjeio]

what are the changes to be made.?

None, other than creating the program running on the Pi.

How do the communication work.?

The protocol is documented here, grblHAL extensions here.

and to be precise transmit will be integer value, receive will be a string value.

Then you have to implement your own protocol. The HPGL plugin is the only example I have that completely switches out the Grbl protocol.

[Sreejasailu]

do you have any user manual or information for the basics or a newbie?
if yes, can you provide that document?

[terjeio]

do you have any user manual or information for the basics or a newbie?

Not much more than I have already provided. This wiki page and a basic technical reference for the core is in the works but those are aimed at somewhat experienced programmers.