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Background: I have made a standalone Arduino board using Atmega328PB. I have written code for a clock which lights LEDs based on the time. After a day or so it locks up. Sometimes it reboots. I would like to get debug software that will tell me where in the code it is locking up or crashing.
It could be a memory issue - stack and heap crashing(?). Compiler tells me sketch is using 62% of 32256 bytes storage space. Global variables use 34% of dynamic memory leaving 1332 bytes for local variables of 2048 bytes total.

Question: Is there relatively cheap ( < $100) debugging software that is not very complex I could use to solve this issue?

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  • serial.print() instructions placed in the program and serial monitor
    – jsotola
    May 12, 2020 at 17:07
  • did you use String?
    – Juraj ♦
    May 12, 2020 at 17:20
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    Atmel Studio and a real hardware debugger. It's hardware you need, not software. Also remove String from your code.
    – Majenko
    May 12, 2020 at 17:41
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    I am not using String in my code.
    – RickH
    May 12, 2020 at 17:52
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    @MichelKeijzers, it is a sad state of affairs with debugging the arduino .... i have been using an array of integers ... various points in the program increment one of the integers ... a button press dumps the array to serial ... it avoids time delays due to multiple serial.print() statements within the program
    – jsotola
    May 12, 2020 at 18:00

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