Transceiver simulator on laptop

[brunofalmeida]

We need to develop a Python program that runs on a laptop and uses Pyserial to send/receive UART messages, mimicking the transceiver's behaviour to make testing easier. This should be developed in the test-software repository.

For now, ignore the AX25 packetization format and just send the data (message contents) we want.

Minimum functionality:

• The user can type a raw message (sequence of bytes) which the laptop will send over UART.
• When the laptop receives a message from UART, it outputs the raw bytes to the screen.

Here is a general idea of the program should work:

Command list:
1. Send raw message
(user types 1)
Enter raw message: (user types) 00:05:1A:fF:37:78:22

(laptop receives UART)
Received raw message: 00:03:1E:7E:D3

The raw bytes format should represent all bytes in hex with colons in between. It should allow for letters A-F to be input as either uppercase or lowercase.

Future steps:

• The user can select which type of command to send, enter the individual components when prompted, and the program constructs the message.
• The program can parse (understand) received messages, then display data nicely formatted and converted.

[brunofalmeida]

We'll need to implement more commands in the future, but the current version is working for most of the core commands and usable for OBC/integration testing.