Solved
stm32L031K6T6 doesn't work, but it works in stm32L011K setting
I'm starting project with custom board that is controlled in STM32L031K6T6 MCU.
I set up that with cube ide and wrote simple Timer code.
Unfortunately, It isn't work. Not only that, Nothing is happend(uart, Hal_Delay, GPIO...)
But oddly enough, it is working at same setting of Stm32L011K FW of Cube ide.
Everything worked in the Stm32L011 setting, but nothing worked in the Stm32L031 setting.
Is there anything I missed? I'm really confused...
I set the cubeide with STM32L031, STM32L011(Both project is set in Nucleo Board version)
The board is worked in Stm32L011 version although The MCU of that is Stm32L031K6T6, It isn't worked in Stm32L031K Setting...