Intoduce Formula Data Record: (signal for message database)

[mdabrowski1990]

Requires

#6

Description

As a user, I want to have Formula Data Record that supports raw to physical value calculation, so I can either use physical or raw values to decode/encode values of these data records.

Example:
Data Record Vehicle Speed is 16 bit value. Exact vehicle speed is calculated using formula:
[vehicle speed km/h] = [vehicle speed raw] / 125

Testing

• unit tests
  • Value encoding and decoding using Formula Data Record
  • There is exception raised whenever out of range physical value is being decoded
  • There is exception raised whenever out of range raw value is being encoded

Acceptance criteria

• Formula Data Record class is defined
  • inherits after Abstract Data Record class
  • provide encode method (input: raw value, output: physical value)
  • provide decode method (input: physical value, output: raw value)
• proper error handling is implemented
• provide an option to mix with other Data Record types (e.g. physical value in certain range and mapping for other values like 'error', 'init')
• provide an option to have different mapping in various range (e.g. 1-10 -> 0.1-1; 11-20 -> 10-100)