CN114064544A - Multi-serial port extension design method applied to converged terminal - Google Patents
Multi-serial port extension design method applied to converged terminal Download PDFInfo
- Publication number
- CN114064544A CN114064544A CN202111180937.8A CN202111180937A CN114064544A CN 114064544 A CN114064544 A CN 114064544A CN 202111180937 A CN202111180937 A CN 202111180937A CN 114064544 A CN114064544 A CN 114064544A
- Authority
- CN
- China
- Prior art keywords
- data
- com1
- mux
- recv
- serial port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000013461 design Methods 0.000 title claims abstract description 10
- 238000005538 encapsulation Methods 0.000 claims description 12
- 101150053844 APP1 gene Proteins 0.000 claims description 8
- 101100189105 Homo sapiens PABPC4 gene Proteins 0.000 claims description 8
- 102100039424 Polyadenylate-binding protein 4 Human genes 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 4
- 101100264195 Caenorhabditis elegans app-1 gene Proteins 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 7
- 101100055496 Arabidopsis thaliana APP2 gene Proteins 0.000 description 4
- 101100016250 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GYL1 gene Proteins 0.000 description 4
- 102100038359 Xaa-Pro aminopeptidase 3 Human genes 0.000 description 4
- 101710081949 Xaa-Pro aminopeptidase 3 Proteins 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 101000746134 Homo sapiens DNA endonuclease RBBP8 Proteins 0.000 description 3
- 101000969031 Homo sapiens Nuclear protein 1 Proteins 0.000 description 3
- 102100021133 Nuclear protein 1 Human genes 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
Abstract
The invention discloses a multi-serial port extension design method applied to a convergence terminal. The whole method comprises the implementation of an application layer, a drive layer, an extended MCU, a physical layer and the like, and the multi-serial port address allocation and multi-serial port virtualization are realized by establishing a MUX communication protocol between the drive layer and the extended MCU, so that the independence and concurrency of the application layer accessing the physical layer are realized.
Description
Technical Field
The invention relates to the technical field of intelligent terminals of power internet of things, in particular to a multi-serial-port expansion design method applied to a convergence terminal.
Background
The intelligent integration terminal is used as a side in a cloud management side end framework of a smart power grid Internet of things system and has the functions of information acquisition, edge calculation, equipment perception and the like, so that the power Internet of things terminal plays a very important role, and the integration terminal is provided with a multi-channel communication interface which is a necessary condition for realizing multi-equipment access. According to the requirements of the related technical specifications of the intelligent convergence terminal in the transformer area, the terminal is provided with 2 paths of RS232 communication interfaces and 4 paths of RS485 communication interfaces; therefore, the multi-serial port expansion design method can meet the requirement of a multi-serial port communication interface on limited resources.
The platform zone intelligent convergence terminal hardware design adopts an industrial CPU, and has the advantages of high running dominant frequency, large memory and the like, but the corresponding serial ports are not many, and the platform zone intelligent convergence terminal takes an i.MX 6 series of NXP as an example and only has 4 serial port communication interfaces, so how to realize multi-serial port expansion under the condition of limited hardware resources is very important.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention provides a multi-serial port expansion design method applied to a convergence terminal, solves the problem of insufficient peripheral interfaces of the main control CPU serial port of the convergence terminal, meets the requirement of a multi-path serial port application interface of the convergence terminal, and expands the application scene of the convergence terminal.
In order to realize the purpose, the invention adopts the following technical scheme:
a multi-serial port extension design method applied to a convergence terminal is characterized in that an extension MCU is added on the basis of a main control CPU of the convergence terminal, the extension MCU and the main control CPU are connected through a high-speed serial port, a MUX extension protocol is adopted to realize multi-serial port extension application, and the MUX extension protocol is defined as follows:
the method comprises the following steps:
1. the application layer APP1 opens the serial port 1 and sends data com1_ send _ data;
2. the driver layer conducts MUX encapsulation on the com1_ send _ data, the encapsulation domain is a data domain, a MUX [ com1_ send _ data ] is formed, and the MUX [ com1_ send _ data ] is output to the expansion MCU;
3. the expansion MCU decapsulates the mux [ com1_ send _ data ], extracts the com1_ send _ data and sends the data out through a physical layer interface;
4. the physical layer interface receives the data com1_ recv _ data;
5. the extended MCU conducts MUX (multiplexer) packaging on the com1_ recv _ data, the packaged domain is a data domain, and MUX [ com1_ recv _ data ] is output to the driving layer;
6. the driver layer unpacks the mux [ com1_ recv _ data ], extracts the com1_ recv _ data, and sends the com1_ recv _ data to the application layer APP 1;
7. the application layer APP1 receives the data com1_ recv _ data;
through the process, the virtual MUX channel of the drive layer and the extension MCU is realized, one-to-one access from the application layer APP to the physical serial port is established, and the requirement of multi-serial port extension is met.
Drawings
FIG. 1 is a data flow control diagram of the present invention
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
For example, a data flow diagram of a multi-serial port extension design method applied to a converged terminal includes an application layer, a driver layer, an extension MCU, a physical layer and the like.
The MUX communication protocol is established between the driver layer and the expansion MCU, so that multi-serial port address allocation and multi-serial port virtualization are realized, and independence and concurrency of an application layer accessing a physical layer are realized.
The specific data stream transmission comprises the following steps:
step 1: the application layer APP1 needs to send data through COM1, firstly calls a write interface to transfer sending data COM1_ send _ data to a drive layer, the drive layer conducts MUX protocol encapsulation on the COM1_ send _ data, MUX [ COM1_ send _ data ] is sent to an expansion MCU through a high-speed serial port, the expansion MCU unpacks the data to extract COM1_ send _ data, and the data are sent out through COM 1;
step 2: the application layer APP2 needs to send data through COM2, firstly calls a write interface to transfer sending data COM2_ send _ data to a drive layer, the drive layer conducts MUX protocol encapsulation on the COM2_ send _ data, MUX [ COM2_ send _ data ] is sent to an expansion MCU through a high-speed serial port, the expansion MCU unpacks the data to extract COM2_ send _ data, and the data are sent out through COM 2;
and step 3: the application layer APP3 needs to send data through COM3, firstly calls a write interface to transfer sending data COM3_ send _ data to a drive layer, the drive layer conducts MUX protocol encapsulation on the COM3_ send _ data, MUX [ COM3_ send _ data ] is sent to an expansion MCU through a high-speed serial port, the expansion MCU unpacks the data to extract COM3_ send _ data, and the data are sent out through COM 3;
and 4, step 4: the application layer APP4 needs to send data through COM4, firstly calls a write interface to transfer sending data COM4_ send _ data to a drive layer, the drive layer conducts MUX protocol encapsulation on the COM4_ send _ data, MUX [ COM4_ send _ data ] is sent to an expansion MCU through a high-speed serial port, the expansion MCU unpacks the data to extract COM4_ send _ data, and the data are sent out through COM 4;
and 5: the application layer APP1 reads data received by the COM1, firstly, the COM1 receives data COM1_ recv _ data, the data are transmitted to the expansion MCU, the expansion MCU conducts MUX protocol encapsulation and adjustment on the COM1_ recv _ data, MUX [ COM1_ recv _ data ] is sent to the drive layer through the high-speed serial port, the drive layer conducts MUX protocol unpacking on the MUX [ COM1_ recv _ data ] data to extract COM1_ recv _ data, the COM1_ recv _ data is sent to the application layer APP1, and the application layer APP1 completes COM 52 received data reading through the read interface 636363 1;
step 6: the application layer APP2 reads data received by the COM2, firstly, the COM2 receives data COM2_ recv _ data, the data are transmitted to the expansion MCU, the expansion MCU conducts MUX protocol encapsulation and adjustment on the COM2_ recv _ data, MUX [ COM2_ recv _ data ] is sent to the drive layer through the high-speed serial port, the drive layer conducts MUX protocol unpacking on the MUX [ COM2_ recv _ data ] data to extract COM2_ recv _ data, the COM2_ recv _ data is sent to the application layer APP2, and the application layer APP2 completes COM 52 received data reading through the read interface 636363 2;
and 7: the application layer APP3 reads data received by the COM3, firstly, the COM3 receives data COM3_ recv _ data, the data are transmitted to the expansion MCU, the expansion MCU conducts MUX protocol encapsulation and adjustment on the COM3_ recv _ data, MUX [ COM3_ recv _ data ] is sent to the drive layer through the high-speed serial port, the drive layer conducts MUX protocol unpacking on the MUX [ COM3_ recv _ data ] data to extract COM3_ recv _ data, the COM1_ recv _ data is sent to the application layer APP3, and the application layer APP3 completes COM 52 received data reading through the read interface 636363 3;
and 8: the application layer APP4 reads data received by the COM4, firstly, the COM4 receives data COM4_ recv _ data, the data are transmitted to the expansion MCU, the expansion MCU conducts MUX protocol encapsulation and adjustment on the COM4_ recv _ data, MUX [ COM4_ recv _ data ] is sent to the drive layer through the high-speed serial port, the drive layer conducts MUX protocol unpacking on the MUX [ COM4_ recv _ data ] data to extract COM4_ recv _ data, the COM4_ recv _ data is sent to the application layer APP4, and the application layer APP4 completes COM 52 received data reading through the read interface 636363 4;
the above-mentioned embodiments are illustrative of the specific embodiments of the present invention, and are not restrictive, and those skilled in the relevant art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should be included in the scope of the present invention.
Claims (1)
1. A design method of multi-serial port extension applied to a convergence terminal is characterized in that an extension MCU is added on the basis of a main control CPU of the convergence terminal, the extension MCU and the main control CPU are connected through a high-speed serial port, a MUX extension protocol is adopted to realize multi-serial port extension application,
the method comprises the following steps:
the method comprises the following steps: the application layer APP1 opens the serial port 1 and sends data com1_ send _ data;
step two: the driver layer conducts MUX encapsulation on the com1_ send _ data, the encapsulation domain is a data domain, a MUX [ com1_ send _ data ] is formed, and the MUX [ com1_ send _ data ] is output to the expansion MCU;
step three: the expansion MCU decapsulates the mux [ com1_ send _ data ], extracts the com1_ send _ data and sends the data out through a physical layer interface;
step four: the physical layer interface receives the data com1_ recv _ data;
step five: the extended MCU conducts MUX (multiplexer) packaging on the com1_ recv _ data, the packaged domain is a data domain, and MUX [ com1_ recv _ data ] is output to the driving layer;
step six: the driver layer unpacks the mux [ com1_ recv _ data ], extracts the com1_ recv _ data, and sends the com1_ recv _ data to the application layer APP 1;
step seven: the application layer APP1 receives the data com1_ recv _ data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111180937.8A CN114064544A (en) | 2021-10-11 | 2021-10-11 | Multi-serial port extension design method applied to converged terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111180937.8A CN114064544A (en) | 2021-10-11 | 2021-10-11 | Multi-serial port extension design method applied to converged terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114064544A true CN114064544A (en) | 2022-02-18 |
Family
ID=80234212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111180937.8A Withdrawn CN114064544A (en) | 2021-10-11 | 2021-10-11 | Multi-serial port extension design method applied to converged terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114064544A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010037218A (en) * | 1999-10-14 | 2001-05-07 | 구자홍 | apparatus and method for extending interface in digital broadcasting receiver |
| CN201374722Y (en) * | 2009-01-06 | 2009-12-30 | 无锡威泰迅电力科技有限公司 | Multi-serial port dual-Ethernet networked server |
| CN101650703A (en) * | 2009-08-27 | 2010-02-17 | 中兴通讯股份有限公司 | Data transmission method, system and device |
| CN102394806A (en) * | 2011-08-05 | 2012-03-28 | 杭州海康威视数字技术股份有限公司 | Network code allocator and method for controlling front-end equipment by using network code allocator |
| CN103106169A (en) * | 2013-01-28 | 2013-05-15 | 无锡众志和达存储技术股份有限公司 | High speed bus interface expansion structure based on aurora protocol |
| CN105550138A (en) * | 2015-12-18 | 2016-05-04 | 华立科技股份有限公司 | Serial port expansion method |
| CN211669635U (en) * | 2020-02-19 | 2020-10-13 | 西安超网信息科技有限公司 | Multi-communication interface embedded control processing mainboard |
-
2021
- 2021-10-11 CN CN202111180937.8A patent/CN114064544A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010037218A (en) * | 1999-10-14 | 2001-05-07 | 구자홍 | apparatus and method for extending interface in digital broadcasting receiver |
| CN201374722Y (en) * | 2009-01-06 | 2009-12-30 | 无锡威泰迅电力科技有限公司 | Multi-serial port dual-Ethernet networked server |
| CN101650703A (en) * | 2009-08-27 | 2010-02-17 | 中兴通讯股份有限公司 | Data transmission method, system and device |
| CN102394806A (en) * | 2011-08-05 | 2012-03-28 | 杭州海康威视数字技术股份有限公司 | Network code allocator and method for controlling front-end equipment by using network code allocator |
| CN103106169A (en) * | 2013-01-28 | 2013-05-15 | 无锡众志和达存储技术股份有限公司 | High speed bus interface expansion structure based on aurora protocol |
| CN105550138A (en) * | 2015-12-18 | 2016-05-04 | 华立科技股份有限公司 | Serial port expansion method |
| CN211669635U (en) * | 2020-02-19 | 2020-10-13 | 西安超网信息科技有限公司 | Multi-communication interface embedded control processing mainboard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105516191B (en) | System based on the FPGA 10,000,000,000 net Transmission Control Protocol unloading engine TOE realized | |
| US8948199B2 (en) | Fibre channel processing by a host channel adapter | |
| CN103714024A (en) | Multi-serial port parallel processing framework based on SoC (System on a Chip) FPGA (Field Programmable Gata Array) | |
| CN202084028U (en) | Modularized multi-serial port expanding device | |
| CN203705861U (en) | Multi-serial port parallel processing framework based on FPGA | |
| CN110297797B (en) | Heterogeneous protocol conversion device and method | |
| WO2021143135A1 (en) | Far-end data migration device and method based on fpga cloud platform | |
| CN103415062B (en) | A kind of network connection device, wireless router and method for connecting network | |
| CN112666905B (en) | Multichannel communication control system and channel control method | |
| CN114064544A (en) | Multi-serial port extension design method applied to converged terminal | |
| CN108667706B (en) | Ethernet serial server with dynamically adjustable serial number and data transmission method thereof | |
| CN111935196B (en) | Protocol conversion method of Modbus and dnp3 based on EdgeX Foundation | |
| CN108614797A (en) | A kind of high low-frequency serial bus integrated interface of polymorphic type | |
| JPH077955B2 (en) | Data communication controller | |
| CN106844263B (en) | Configurable multiprocessor-based computer system and implementation method | |
| CN207976991U (en) | A kind of high speed 4G concentrators communication module and power information acquisition system | |
| CN103034543A (en) | Communication method among multiple software operating environments and method for enabling multiple software operating environments to communicate | |
| CN202696609U (en) | Optical fiber concentrator | |
| CN115967589A (en) | ARM and FPGA-based high-speed buffer type CAN bus communication system and method | |
| CN215986940U (en) | Industrial wireless gateway device compatible with multi-field bus protocol | |
| CN112433966B (en) | Multi-interface architecture based on Windows platform and implementation method | |
| CN213399265U (en) | FPGA-based field bus control circuit device | |
| CN212696013U (en) | 5G gateway integrating Wi-Fi6 function | |
| CN206741479U (en) | A kind of serial communication protocol converter | |
| CN218782610U (en) | Localization high-speed CAN circuit based on PCIe bus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220218 |