MPPT solar battery charger

[Demon]

Robert,
i think it ias a problem related to panel power wp, panel voltage vp and duty cycle when switching among the various status...
It needs to find out the proper values that controls the switching...
tnks,
Ambrogio

Yup. I can't see bad GOSUB structure, nothing that stands out anyways.

The STATE can evolve from 0 to 3 in a single pass of that SELECT CASE. I can only assume the readings from your hardware makes it jump unexpectedly.

Are you able to debug in real time and step thru your code?

It's about the only way I can think of the visualize what is going on. I see you dump a lot of information but I'm unable to follow that manually through your logic.

I prefer to dump like this:

MAIN --------------------------------------------------
STEP 1, list of variables.
SUBROUTINE XYZ ----------------------------------------
STEP 1, list of variables.
STEP 2, list of variables.
SUBROUTINE ABC ----------------------------------------
STEP 1, list of variables.
...etc...

I find it easier to follow in the code this way. I place the STEPS in relevant places, like before & after IFs, etc.

Robert