Systems and methods for implementing a user mode virtual serial communications port emulator

• US 10,223,302 B2
• Filed: 11/09/2017
• Issued: 03/05/2019
• Est. Priority Date: 03/27/2015
• Status: Active Grant

• Current Assignee: Toshiba Global Commerce Solutions Holdings Corporation (Toshiba Corporation)
• Original Assignee: Toshiba Global Commerce Solutions Holdings Corporation (Toshiba Corporation)
• Inventors: Farrow, Glynn, Ge, Weifeng, Tay, Mui Ling, Neo, Guek Wu
• Primary Examiner(s): Martinez, David E
• Application Number:
  US15/808,023
• Publication Number:
  US 20180067879A1
• Time in Patent Office: 481 Days
• CPC Class Codes: G06F 13/105 where the programme performs an input/output emulation function
• CPC Class Codes: G06F 13/1673 using buffers
• CPC Class Codes: G06F 13/387 for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system
• CPC Class Codes: G06F 13/4282 on a serial bus, e.g. I2C bus, SPI bus on daisy chain buses G06F13/4247
• CPC Class Codes: G06F 2213/0002 Serial port, e.g. RS232C
• CPC Class Codes: G06F 2213/3852 Converter between protocols

Abstract

Systems and methods for implementing a user mode virtual serial communications port emulator are disclosed herein. According to an aspect, a method for a virtual serial communications port emulator includes using at least one processor and memory for creating a virtual serial communication port (VCP) driver in a user mode of an operating system. The method further includes emulating a physical serial communication port using the VCP driver. In addition, the method includes converting outgoing data from an application executed on the at least one processor and memory via the VCP driver into a format complying with a protocol associated with a VCP device server. The method also includes converting incoming data from the VCP device server complying with the protocol into a second format understood by the application, wherein the VCP driver is communicated with using an unpublished universally unique identifier (UUID).

Claims

1. A method for a virtual serial communications port emulator, the method comprising:

using at least one processor and memory for;

creating a virtual serial communication port driver in a user mode of an operating system;

emulating, in the user mode of the operating system, at least one physical serial communication ports using the virtual serial communication port driver;

using a timer to trigger the at least one physical serial communication ports to poll the virtual serial communication port driver;

converting outgoing data from an application executed on the at least one processor and memory via the virtual serial communication port driver into a format complying with a protocol associated with a virtual serial communication port device server;

interfacing, by the virtual serial communication port driver, with the application and the virtual serial communication port device server in the user mode of the operating system; and

converting incoming data from the virtual serial communication port device server complying with the protocol into a second format understood by the application, wherein the virtual serial communication port driver is communicated with by the virtual serial communication port device server using an unpublished universally unique identifier (UUID).

2. The method of claim 1, further comprising opening the virtual serial communication port driver as a communications port by the application.

3. The method of claim 2, further comprising communicating with virtual serial communication port driver as communications port via symbolic link.

4. The method of claim 1, further comprising opening the virtual serial communication port driver as virtual serial communication port device by the virtual serial communication port device server.

5. The method of claim 4, further comprising providing, via the virtual serial communication port device server, emulation and protocol translation services for the virtual serial communication port driver.

6. The method of claim 1, wherein the virtual communications port driver is configured to use user mode memory buffers.

7. The method of claim 6, wherein the virtual communications port driver is further configured to use a first user mode memory buffer for the outgoing data and a second user mode memory buffer for the incoming data.

8. The method of claim 1, wherein the virtual communications port driver is further configured to emulate serial.sys communication port driver.

9. The method of claim 1, wherein the virtual serial communications port driver uses a user mode driver framework (UMDF).

10. A system for a virtual serial communications port emulator, the system comprising:

at least one processor and memory;

a plurality of virtual serial communication port drivers created in a user mode of an operating system;

an emulator configured to emulate, in the user mode of the operating system, a physical serial communication port using the virtual serial communication driver;

a timer configured to trigger the at least one physical serial communication ports to poll the virtual serial communication port driver;

and

at least one physical serial communication port emulated using the plurality of virtual serial communication port drivers,

wherein the plurality of virtual serial communication port drivers;

convert outgoing data from an application located on the at least one processor and memory via the multiple virtual serial communication port drivers into a format complying with a protocol associated with a virtual serial communication port device server;

interfacing, by the virtual serial communication port driver, with the application and the virtual serial communication port device server in the user mode of the operating system; and

convert incoming data from the virtual serial communication port device server complying with the protocol into a second format understood by the application, wherein the multiple virtual serial communication port driver is communicated with by the virtual serial communication port device server using an unpublished universally unique identifier (UUID).

11. The system of claim 10, wherein the virtual serial communication port drivers are configured to be opened as a communications port by the application.

12. The system of claim 11, wherein the virtual serial communications port emulator is configured to be communicated with the multiple virtual serial communication port driver as communications port via symbolic link.

13. The system of claim 10, wherein the plurality of virtual serial communication port drivers are configured to be opened as virtual serial communication port device by the virtual serial communication port device server.

14. The system of claim 13, wherein the virtual serial communication port device server is configured to provide emulation and protocol translation services for the multiple virtual serial communication port driver.

15. The system of claim 10, wherein the plurality of virtual serial communication port drivers are configured to use user mode memory buffers.

16. The system of claim 15, wherein the plurality of virtual serial communication port drivers are further configured to use a first user mode memory buffer for the outgoing data and a second user mode memory buffer for the incoming data.

17. The system of claim 10, wherein the virtual communications port drivers are further configured to emulate a serial.sys communications port driver.