# BachelorThesis

## About
This repository contains source codes for client-server network application capable to communicate with distance laser sensor DLS-C 15 via RS-232 interface, which was implemented as a part of bachelor thesis.

## Author
Author: Jozef Simko

School year: 3., Bachelor study, 2021/22

Study program: Computer Networks

Organization: Technical University of Kosice (TUKE), Faculty of Electrical Engineering and Informatics (FEI)

## Building
Implemented and tested on:
|     Platform    |             OS            |                     compiler                    |
|-----------------|---------------------------|-------------------------------------------------|
|      Linux      |     Ubuntu 20.04.1 WLS2   |    gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2)   |
|     Windows     |     Windows 10.0.19043    | gcc version 11.2.0 (MinGW-W64 x86_64-posix-seh) |
|   Raspberry Pi  | Linux raspberrypi 5.10.17 |     gcc version 8.3.0 (Raspbian 8.3.0-6+rpi1)   |

#### LINUX
* CLIENT 
	- `gcc client.c -Wall -Werror -Wextra -o client`
* SERVER 
	- `gcc server.c rs232.c -Wall -Werror -Wextra -o server`
#### WINDOWS
* CLIENT 
	- `gcc client.c -Wall -Wextra -lwsock32 -o client`
* SERVER 
	- `gcc server.c rs232.c -lwsock32 -Wall -Werror -Wextra -o server`

## Launch
### Server
Server can be launched with 1 or 2 input parameters. The number of parameters determines what mode will be used - manual or automatic mode. 

**port** - specific number to identify communication processes of server

**[config_file]** - configuration file with exact name of variables - check *config.cfg* file as example

#### Manual mode 
- server waits for input commands from client, sends them to laser sensor and returns results back to client
	- `./server <port>` 

#### Automatic mode
- server loads variables from configuration file *config.txt*, starts measuring and sends results to client continuously.
	- `./server <port> [config_file]`

### Client
Client has to be lauched with 2 input parameters. If server is in **manual mode**, the client always loads input commands from *commands.txt*.

**IP address** - IP address of server the client tries to connect

**port** - port number of server
- `./client <IP address> <port>`

## Demo
Demo program demonstrates how to create client-like program, which can connect to server in automatic mode and process resulting data.
#### Building
UNIX - `gcc demo.c -Wall -Werror -Wextra -o demo`

WINDOWS - `gcc demo.c -Wall -Wextra -lwsock32 -o demo`

#### Launch
No input parameters.

Macros defines multiple variables:

```c
#define IP_ADDRESS "192.168.0.101"	// IP address of server
#define PORT 32500			// server port number
#define MAX_VALUE 1265			// upper limit to compare (depends on used units)
#define MIN_VALUE 1200			// lower limit to compare (depends on used units)
```

## References
[WinLibs GCC](https://winlibs.com)

[RS-232 library](https://www.teuniz.net/RS-232/)