Transplantation of STM32F103 USB virtual serial port driver routine and stm32f103 routine

Transplantation of STM32F103 USB virtual serial port driver routine and stm32f103 routine

1) download and install the driver. At present, ST Company Support WIN7 version: vcp_v1.3.20.setup.exe (on the official website to search for stsw-stm32102 is the); first install the driver and then insert the USB otherwise the installation is not successful.

2) download firmware. Currently ST Company's latest USB firmware Library: STM32_USB-FS-Device_Lib_V4.0.0 (on the official website to search for stsw-stm32121 is ).

3) ST Official Website: www.st.com

4) check whether the system has the usbser. sys file. In many GHOST versions, system driver files are lost! INF file: http://dl.vmall.com/c0zzdsmrpk

5) Check whether usb dp + has K pull-up resistance on the hardware. (When I made the board, I directly connected the I/O port without the pull-up resistor, causing the device to be unidentifiable. I used the oscilloscope to find that the DP + level could never be pulled down. I just needed to add it)

6) modify the firmware.

Void Set_System (void); void USB_Cable_Config ).

If usb dp + has a K pull-up resistor directly connected to 3.3V, you do not need to modify it.

7) install firmware. The driver runs on its own board.