I made an STM32 board a few days ago. I soldered it, but when I connected Jtag, it showed "no Cortex-M device found in JTAG chain. Please check the JTAG cable and connected devices." But this JTAG is
When the device is connected to the PC via USB, I want to use the device as a USB flash drive. I have done the following work, but there is a problem. Please help me find out where the problem is. Rel