Hello to everyone, The program sequence must run only once in the loop. I have the values ​​key = 0 and key_ = 0 in the loop, but errors appeared and I did not understand why. In the test in this example I have key_ = 0, I write the key_ value to address 2, read address 2 and return the value in key...

Hi WingNut,
Thank you very much! It was in my eyes, but I couldn't see it.

Where are the options to thank users? I don't see them.

As I mentioned before, the program works, I did the test on a 24LC512 eeprom and a PIC16F877A microcontroller.
Thank you to Mr. Martin for his involvement and the help that did not take long to come from him.

Hi Martin,
It works perfectly, I'll come back later with a more concise flowchart, I have to delete the components that I no longer need.

Perfect, I will try to test on the board. Now I make some notifications for some previous studies.
Thanks Martin

Good morning,

The data to be written are taken from the initial value {0, 1, 2, 3}.
Is there another option where other data can be written apart from those in the initial value?

Hi Martin,

Of course I have attached the fc file.

Hi Martin, Now I noticed that I actually used another component in the test, instead of using the 24LC256 component. The 24LC256 does not work, the eeprom component is not visible on the 2D panel, and in the properties I do not have the option to write at least one byte, in the data field it does no...

Hi Martin,

Yes, you have really been a great help and I thank you. When you have time and if you want, tell me how I should proceed when I change the source code to "FC_Comp_Source_Serial_EEPROM_(24LC512)" for example, how to get the fcpx file.

All the best!