Hi everybody
I'm using nRF Connect SDK 2.6.1. I have my own board based on nRF52840 SoC.
I made an overlay file of nRF52840DK and changed its UART TX/RX settings according to my board.
I tested echo_bot sample (without any changes) from "zephyr\samples\drivers\uart\echo_bot". When I send a string to the UART terminal, the SoC will be reset suddenly without doing echo back.
I tested it by debug and saw everything is OK and the SoC does echo back the string.
So, I guessed this problem can be occurred by optimization configs.
Therefore I checked all available optimization configs and found the below results:
CONFIG_SIZE_OPTIMIZATIONS=y >> The SoC resets and wait again for UART receive.
CONFIG_SPEED_OPTIMIZATIONS=y >> The SoC resets repeatedly. It resets periodically after printing "Tell me something and press enter:\r\n".
CONFIG_DEBUG_OPTIMIZATIONS=y >> Result is OK.
CONFIG_NO_OPTIMIZATIONS=y >> Result is OK.
I'll be happy to guide me.
Thanks in advance
Mehdi Sadeghian
