I have done the following things and ask for help with troubleshooting.
1. I bought two STM32F031K6_NUCLEO boards.
2. When the first USB cable is plugged into the board, the LD3 LED flashes and Demo F / W confirms normal operation
3. I did ST-Link upgrade with V2.J32.M22 version
4. In the STM32Cube_FW_F0_V1.9.0 package, the following example was compiled successfully by selecting Raw binary from the Output option of the project option
STM32Cube_FW_F0_V1.9.0 \ Projects \ STM32F031K6-Nucleo \ Examples \ SPI \ SPI_FullDuplex_ComPolling \ EWARM \ Project.eww
5. I downloaded the generated binary file to the target in the following way
Drag and Drop to the NODE_F031K6 folder of the board connected to the PC
6. Debugging in EWIAR produces a fatal failure message that MCU can not be found
7. Connecting to the target with ST-Link Utility results in connection failure
In the Setting tab, the ST-Link Serial Number is recognized normally.
My problem now is that I can not connect to the target. I need help to solve this problem.
