We have four identical µC systems based on STM32G081, running same, identical firmware.They receive commands via one, single RS-485 bus.One job is switching a GPIO pin from on to off.UART interrupt has highest prio (0), consuming task has highest prio (realtime).Occasionally one or more system (see LA pictures) are delayed.Delay is always the same (@24 MHz 3.7 ms, @ 64 MHz 1.8 ms).
May someone help in what is blocking the consuming task ?Best regards, Juergen