caxelos / project

Evaluation Project: Server/Client serial communication - CHRISTOS AXELOS

Compile

• To compile the project, open a terminal and type cmake . in "evaluation_axelos" directory.

• Then, type make.

Execute

• In the same terminal, type socat -d -d pty,rawer,link=/dev/ttyS0 PTY,rawer,link=/dev/ttyS1, in order to create virtual serial port connection. An example output can be as follows:

$ socat -d -d pty,rawer,link=/dev/ttyS0 PTY,rawer,link=/dev/ttyS1
021/04/17 19:25:58 socat[4313] N PTY is /dev/pts/1
2021/04/17 19:25:58 socat[4313] N PTY is /dev/pts/10
2021/04/17 19:25:58 socat[4313] N starting data transfer loop with FDs [5,5] and [7,7]

• Now open a second terminal in the same directory and run server as follows. /dev/pts/1 is taken from the previous command's output.

./server -nregs 5 -endpoint /dev/pts/1

• Then, open a third terminal in the same directory and run client as follows. /dev/pts/10 is taken from the previous command's output.

./client -endpoint /dev/pts/10

• Finally, the client is ready to interact with the server.

System's Architecture

• The server and client side contain 3 threads each. One master thread for main calculations, one slave thread for sending to serial port and one slave for receiving from it.