Project Explanation

Setup

pip install pyserial

Short Explanation

This script try to perform the same task as a human would do when each connection would be checked manual. Screen, Minicom etc. would present the data as UTF-8 encoded and this function use this property to check for the following criteria:

• "text.encode() == serialData" checks if serial data and UTF-8 encoded text are the same
• "(not text)" returns True for empty text
• "text.isprintable()" returns False for special characters

The core is this little function:

def estimateConnectionQuality(text: str, 
                              serialData: bytes):

    if (text.encode() == serialData) == True and (not text) == False and text isprintable() == True:  
            print ('\n########### Connection Properly ok #############\n')
            return True

If all the points above are fulfilled the serial properties like baudrate etc. should be correct.

Possible options from pySerial

It's based on pySerial. pySerial provides the following options:

PARITY_NONE, PARITY_EVEN, PARITY_ODD, PARITY_MARK, PARITY_SPACE = 'N', 'E', 'O', 'M', 'S'
 STOPBITS_ONE, STOPBITS_ONE_POINT_FIVE, STOPBITS_TWO = (1, 1.5, 2)
 FIVEBITS, SIXBITS, SEVENBITS, EIGHTBITS = (5, 6, 7, 8)
 PARITY_NAMES = {
     PARITY_NONE: 'None',
     PARITY_EVEN: 'Even',
     PARITY_ODD: 'Odd',
     PARITY_MARK: 'Mark',
     PARITY_SPACE: 'Space',
 }

Assumption for running time

The port timeout at the moment is 10s, which at the moment determines the running time:

• 192 Combinations: 3xParity x 2xStopbit x 2xBitsize * 16 Baudrates * TimeoutPort ==> 32 min --> Should be good for most devices

• 320 Combinations: 5xParity x 2xStopbit x 2xBitsize * 16 Baudrates * TimeoutPort ==> 50 min

• 960 Combinations: 5xParity x 3xStopbit x 4xBitsize * 16 Baudrates * TimeoutPort ==> 160 min

Example for the summary

Code Rules

Cheatsheet for Codestyle

https://peps.python.org/pep-0008/