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I finally found the problem. In next days i'll post examples for wrong and solutin scenarios. Thnks anyway!

Hello there. I cant solve this error. Incrementing an unsigned long variable inside a timer interrupt (atmega2560), when it reaches the border limit of 0xFF, at the next step, 0x100, it gets corrupted. Tried with C icon and declred it in supplementary code as VOLATILE but no way. Tried also to under...

ABOUT ERRATIC BEHAVOIR as i wrote in previous post.... The better soltion that i had found solution is attached here. In the ERRATIC CORRECTED snippet, things was ok on AT328P but again erratic in mega 2560. The Macro Component TIMER inside flowcode works ok but is cpu angry, so seems ok if you need...

I managed to adapt a snippet posted by Benj in an older post to easy drive the module linked. Settings are for mega2560 To anyone goes in same trouble.... https://it.aliexpress.com/item/4000148474491.html?spm=a2g0o.productlist.0.0.3aa27034pLvCiU&algo_pvid=7cda5299-17c0-46a6-927e-f0de34769e49&algo_ex...

Putting pullup resistors on the mcu card soplves partially the fault by unaspected disconnection. Anyway, if for some event, the Holtek device can't receive the waited ACK by the mcu, it remains with a line LOW, and this stops again the MCU. One solution, could be set a flag before and resetting it ...

FANTASTIC!
I'll try as soon as possible and i'll report here.
Thank you!

Well, fixed by myself the second problem. Adding a variable inside the interrupt and copy the value of the incremented variable in it fix the erratic behavoir.
Attached.

The first problem is still up here....

Here the sample code. When HK Macro icon is disabled it works, blinking Port_B led. In real hardware, if HK controller gets disconnected, the code execution looks up. Also, there is another little problem. As you can see, i have created a time base toggling the variable tick inside an interrupput an...

Thanks for your reply. WhatchDog is not a solution in my case. I dont need reboot the micro, i have to step over, going on with the code.
ATMEGA 2560 is the choiced platform.

Hello there! I'm looking for a solution to solve this problem. If the HT16K33 controller gets disconnected from the micro for any reason, when you call its Component during the program, the microcontroller stuck waiting for a reply by I2C protocol. There is a way to recovery out, a time limit or so,...

Yes, i would like have exact timing of 1ms to simplify wheel rpm calculation. Was only a facility, i can go over wuthout it. The other and bigger problem is that putting in sleep mode the micro ATMEGA2560, without any other absobtion than itself, i can't obtain current under 8ma that's quite high fo...

Hello to everyone! The platform is an Arduino Mega. But i program it directly by ICSP external programmer. So, no bootloader reserved memory etc. I need to set up a 1ms time base interrupt in an AVR ATMEGA 2560 at 16MHz. Does someone can help me in doing this? For PIC, i seen, the problem inside Flo...