I have STM32F4 DISC board and I worked with it several weeks. It was working correctly but today when I was set a SPI connection with other stm32f030 mcu, I plug-in and plug-out usb cable and I got "USB device not recognized" error message.I didn't c...

I have following code snippet, when I compile it with -O0 optimization level it gives below assembly code and I can observe value address on Expression window. But when I compile it with -O3 optimization level I couldn't observe address of value. Whe...

Hi, I have an issue with CubeIDE and ST-LINK.I'm trying USART communication with STM32F0F4, I write code and debug but I don't get COM Port. In device manager there is no port showing. I installed st-link009.In CubeIDE, i tried both St-Link GDB Serve...