Passing data from function to function

openiolink / io-link-master-shield-hat-sw

Software for the IO-Link Master Shield/Hat for Arduino and Raspberry Pi

Apache License 2.0

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Passing data from function to function #32

Open gammeter opened 3 years ago

gammeter commented 3 years ago

There are cases, where one could optimize the passing of data from the original function call to the destination.

Generally use pointers or references to pass data greater than 32 bit.
Avoid situations where one function splits up a structure and then passes the individual data elements to another function. For example Max14819::Max14819_Port::sendIOLData() receives three arguments which are all calculated from one object (an IOL_Message). Alternatively it could just receive a referece to an IOL_Message and calculate the individual items by itself.

gammeter commented 3 years ago

Interne Notiz für den einen oben erwähnten Fall (Max14819::Max14819_Port::sendIOLData()):

Warum nicht die IOLMessage (Referenz darauf) bis hier übergeben? Und hier auseinandernehmen. Oder noch mehr: eine INLINE get_byte() Funktion, die jeweils ein Byte aus den data der IOLMessage zurückliefert. Anstatt hier data[i] , besser get_byte(i) (hat ausserdem die Möglichkeit, noch Code zum Prüfen des Index hinzuzufügen zu Debug-Zwecken)

gammeter commented 3 years ago