memory initialization

[edmundopt]

Hello all

A question, when declared an array inside main, such as

[nilsener]

Try

[Ttelmah]

and, 'yes' it is normal.
'static' variables are initialised to zero.

If you use '#zero_ram', then all variables are cleared to zero, but at a significant cost in time during boot.

Otherwise though variables contain whatever they are explicitly initialised to, _or_ if not initialised, what the memory cells 'happen' to contain. This is actually useful, since it means if a variable is not initialised, and the chip does a watchdog restart, the variable values will contain what they previously contained.
Hence you can test the 'restart_cause', and if this is a watchdog restart, boot straight up _without_ initialising the variables, while for all other restart causes, call an 'init' routine, to write the values you want into place.

Best Wishes

[edmundopt]

thank you, the #ZERO_RAM works like a charm

That was the source of many weird behaviour, because previous values were inside the variables, sometimes all went ok, othertimes complete erratic behavior, the fault is allways of the programmer eheheh

have a nice day

[Ttelmah]

Seriously though, this is a sign of bad programming.
You shouldn't rely on zero_ram, instead _explicitly_ initialise your variables to the values they want. zero_ram is a bodge for people who are not programming well....
(Evil grin).

Best Wishes