#USB VIRTUAL PORT SERIAL#
The drivers for a software-implemented modem create a virtual serial port for communication with the host operating system, since the modem is implemented entirely in the device driver and therefore there is no point where the serial data would be sent to the physical card. This is the standard way of receiving data from Bluetooth-equipped GPS modules, for instance. Bluetooth īluetooth implements virtual serial ports over the Serial Port Profile.
#USB VIRTUAL PORT SOFTWARE#
This allows software intended to interface with a device over a local physical serial port to instead communicate at long distance. If you dont have a serial connection on your computer or only have a printer with a USB connection you can still use the program by installing the Epson. You should see PA11 and PA12 be automatically configured for USBDM and USBDP. In the Pinout & Configuration tab, go to Categories > Connectivity and click USB. For instance, a GPS device which outputs location data to a PCs serial port may be of interest to multiple applications at once.Īnother option is to communicate with another serial device via internet or LAN as if they were locally connected, using serial over LAN. In the CubeMX configuration perspective, you’ll need to enable a few options to initialize the USB as a Virtual COM Port.
#USB VIRTUAL PORT INSTALL#
This technique can be used either to extend the capabilities of software that cannot be updated to use newer communication technologies, such as by transmitting serial data over modern networks, or to achieve data flows that are not normally possible due to software limitations, such as splitting serial port output.Ī serial port typically can only be monitored or transmitted to by one device at a time under the constraints of most operating systems, but a virtual serial port program can create two virtual ports, allowing two separate applications to monitor the same data. The simplest way to install the Virtual Serial port for the USB interface to the SPS receivers is to go to the Trimble Support website (/support). Others provide a limited set of capabilities and do not fully emulate the hardware. Some virtual serial ports emulate all hardware serial port functionality, including all signal pin states, and permit a large number of virtual ports in any desired configuration. The following picture shows an exemplary connection of the development board and the USB Host Computer. This example demonstrates a bridge between a Virtual COM Port on the USB Host Computer and an UART port on the evaluation board. Third-party applications can add this ability, such as the open-source com0com, freeware HW VSP3, or the commercial Virtual Serial Port Driver. The Communication Device Class (CDC) is used for implementing virtual communication ports. Operating systems usually do not provide virtual serial port capability. A software-based virtual serial port presents one or more virtual serial port identifiers on a PC which other applications can see and interact with as if they were real hardware ports, but the data sent and received to these virtual devices is handled by software that manipulates the transmitted and received data to grant greater functionality.