How to create persistent variable?

[purgoufr]

I want to keep the value of the variable even if there is power interruption or reset in the system. That's why I want to create persistent variable in main. Do I need to use pstorage for this, or can I define a custom global variable like persistent as in C?

[emdi]

There are no 'persistent' variables in C.

You might use a library or a machine register for that, depending on your needs and what version of the SDK you are using.

In the more recent versions of the SDK there are two libraries for that: fstorage and fds.

[purgoufr]

I read this link .That's why I said persistent variable in C. Frankly, I never use it. I will be back after searching fstorage and fds libraries.