String.getBytes()

Description

Donne un pointeur vers le tableau interne de caractères utilisé pour stocker les caractères d'un objet String. Modifier le tableau renvoyé modifiera l'objet String lui-même.

Syntaxe

string.getBytes()

Paramètres

Valeurs Renvoyées

  • Renvoie un pointeur vers le tableau de caractères interne à l'objet String (de type unsigned char *)

Exemple

void setup() { Serial.begin(9600); String myString = "Arduino"; byte buffer[myString.length() + 1]; myString.getBytes(buffer, myString.length() + 1); for (int i = 0; i < myString.length() + 1; i++) Serial.println(buffer[i], HEX); } void loop() { }

The result on Serial Monitor:

COM6
Send
41 72 64 75 69 6E 6F 0
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

※ Remarque:

If the string is modified, it is highly recommended using String.reserve() to prevent the memory fragmentation issue

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