import serial ser = serial.Serial('COM5', 115200, timeout=1) ser.write(b'Hello STM32') data = ser.read(100) print(data)
The STMicroelectronics Virtual COM Port driver provides an elegant, low-cost solution for host-to-STM32 communication by leveraging the built-in USB peripheral. It eliminates the need for external USB-UART adapters and simplifies embedded development. While throughput is limited by USB full speed (~12 Mbps) and driver overhead, it is sufficient for debugging, firmware updates, and moderate data logging. The driver is robust across major operating systems, though Windows installation remains the most involved. Future enhancements could include USB High-Speed support (available on STM32F7/H7 series) and native cross-platform driverless operation via WebUSB. stmicroelectronics virtual com port driver
Windows 10 and 11 are good at finding generic drivers, but STMicroelectronics microcontrollers often require a specific ST-LINK/VCP driver layer to handle the proprietary nuances of their USB stack, especially if the board was being recognized as a debugger interface rather than a simple modem. import serial ser = serial
The USB CDC specification defines how a USB device can emulate a serial port. The STM32 USB device library implements the CDC class, handling: The driver is robust across major operating systems,