Thanks ESP-Sprite for the explanation, may your correct .... I will change my code

The idea was to make it easy like neil did it on the Arduino IDE ...

I would like to create a function in ESP-IDF where I can SelectFunction A. Write a Integer,String or Blob to the NVS B. Read out integer,string or blob C. Delete the total content of the partition D. Delete the content of a Key ResultOfFunction Like OK,NOK or Value on Read Option: to create/select a...

Hallo Community, it seems a simple programming question keeps me busy for a couple of days...... may someone can bring a torch to the dark. The Situation is on selection 2 (read the field)... I want to get the result shown in the field Char* Ergebnis. as result in selection 2 the field nvs_ret_data ...