Type of Discriminant Fields

[pasetti]

The framework defines a generic type for all discriminants (CrFwDiscriminant_t). I need to introduce a constraint that the type of all parameters which act as discriminant must be compatible with this type (ideally, they must be equal to it).

With the currently defined services, the parameters acting as discriminants are:

• Service 1: Failure Identification Code
• Service 3: SID
• Service 5: EID
• Service 13: Large Message Transaction Identifier

For the PUS Test Suite implementation, I will use a value of unsigned short for all of them.

[pasetti]

The framework function CrFwPcktGetDisc (which returns the value of the discriminant of a packet) must be implemented by the application developers as a switch-case which checks the packet type and then, depending on the packet type, retrieves the field representing the discriminant and returns it as a value of type CrFwDiscriminant_t.

If there is a need to make this function very fast, applications could define a table which associates the function which retrieves the discriminant value to the service number.

The User Manual should define a constraint that the type of all parameters which act as discriminant must be compatible with this type.