CN209787189U - Embedded Ethernet communication device - Google Patents
Embedded Ethernet communication device Download PDFInfo
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- CN209787189U CN209787189U CN201920695558.4U CN201920695558U CN209787189U CN 209787189 U CN209787189 U CN 209787189U CN 201920695558 U CN201920695558 U CN 201920695558U CN 209787189 U CN209787189 U CN 209787189U
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Abstract
The utility model belongs to the field of electronic network, and discloses an embedded Ethernet communication device, which comprises an upper computer (1) and is characterized in that the upper computer is connected with an Ethernet controller (2) through a circuit; the Ethernet controller is in communication connection with a single chip microcomputer (3) through a bus, and the single chip microcomputer collects information of the functional modules and then sends the information to the Ethernet controller through the bus; the single chip microcomputer configures an Ethernet controller, and the Ethernet controller is provided with a plurality of target ip addresses and port numbers. The IP and the port number can be directly replaced by the upper computer through the network port, and high-efficiency and high-speed Ethernet communication is guaranteed.
Description
Technical Field
The utility model belongs to the electronic network field especially relates to an embedded ethernet communication device.
Background
At present, two types of embedded ethernet communication methods are available, one type is that an embedded system platform is utilized to perform ethernet communication based on a lwip or uip protocol, and the method has a large code amount, occupies a large amount of space of a cpu, and has a high requirement on the performance of the cpu. The other method is to use a hardware platform for construction, solidify tcp/ip protocol to form an Ethernet communication controller, configure the controller through a cpu, save the space of the cpu, but have no memory function for a large number of destination ip addresses, have fixed port numbers, can only realize a few point-to-point communications, and reload through the cpu program when changing ip and port numbers each time to cause complex workload.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the technical problem who exists above, provide an embedded ethernet communication device. The communication flow is redesigned, so that the ip address and the port number can be directly replaced by the upper computer app through the Ethernet port, and the high-efficiency and high-speed Ethernet networking communication of the embedded device is realized.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that:
An embedded Ethernet communication device comprises an upper computer 1 and is characterized in that the upper computer is connected with an Ethernet controller 2 through a circuit; the Ethernet controller is in communication connection with a single chip microcomputer 3 through a bus, and the single chip microcomputer collects information of the functional modules and then sends the information to the Ethernet controller through the bus for communication; the single chip microcomputer configures an Ethernet controller, and the Ethernet controller is provided with a plurality of target ip addresses and port numbers.
Preferably, the upper computer is a PC terminal.
Preferably, the single chip microcomputer is provided with a spi interface single chip microcomputer, and the Ethernet controller uses an Ethernet controller with a solidified TCP/IP protocol.
Preferably, the bus is an SPI interface bus.
The utility model has the advantages that:
The device is the ethernet communication method based on singlechip, the device uses the ethernet controller of solidification (embedding) TCP/IP agreement can save the space of singlechip, simultaneously design accessible APP through the procedure is to ethernet controller (send the order, thereby the singlechip reads and handles the order and realize changing to the purpose IP of ethernet controller), thereby realize the communication to many IP addresses, the communication problem that solidification (embedding) TCP/IP agreement ethernet controller can only carry out several fixed points has been solved, through the change to the purpose IP address that does not use, realize the communication to new purpose IP address.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the working principle of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-2, an embedded ethernet communication device includes an upper computer 1, the upper computer is connected to an ethernet controller 2, and the ethernet controller uses an ethernet controller embedded with TCP/IP protocol, and needs to be configured when in use; the Ethernet controller is in communication connection with a single chip microcomputer 3 through a bus, the bus is an SPI (serial peripheral interface) bus, and the cost is low. The single chip microcomputer is provided with an spi interface. The singlechip acquires the information of the functional module and then sends the information to the Ethernet controller for communication through the bus; the single chip microcomputer is used as a CPU to configure an Ethernet controller, the Ethernet controller is provided with a plurality of target ip addresses and port numbers, and data segment receiving and sending are realized through the single chip microcomputer. The host computer sends information to one data receiving cache corresponding to the ip address in the Ethernet controller, and the single chip microcomputer reads the data in the cache and identifies and processes the command.
The upper computer is any PC terminal and is connected with the Ethernet communication device through an app sending command of the PC terminal. The Ethernet controller is set to be in a server mode, and the APP at the PC end sends a connection request to the Ethernet controller for connection.
Preferably, the ethernet controller is in communication connection with the plurality of upper computers through the router, and the single chip microcomputer can change the destination ip address of the ethernet controller according to the command of the upper computers, so as to realize the replacement of the destination ip address, and is connected with a new upper computer.
The CPU in the device collects and processes the information of each functional module and then sends the information to the Ethernet controller through the SPI port line. The SPI connection is connected with the Ethernet communication controller in a master-slave mode without occupying the port line of the CPU independently, so that the port line resource is saved. The CPU sends out commands, and the Ethernet controller sends information to the PC end APP for processing. The APP terminal sends a command message to the Ethernet controller, the external interrupt of the CPU is triggered through the configuration of the interrupt register of the Ethernet controller, and the information sent by the PC terminal is read and processed.
According to the characteristics and the actual condition requirements of embedded Ethernet communication, an Ethernet controller of a solidified TCP/IP protocol is used, a plurality of target IP addresses and port numbers are set firstly in the process of program initialization operation, and the Ethernet controller sends an ARP command to acquire the physical address of a target host to carry out preliminary networking. When the target IP (a) address is successfully networked, the APP sends an instruction to the Ethernet controller, the instruction comprises a change instruction for any or all port configurations of the IP ports of the Ethernet controller, the CPU analyzes the instruction, re-initializes the Ethernet controller and then changes the Ethernet controller, the Ethernet controller re-performs ARP to obtain the physical address of the target host so as to carry out networking with the target IP address, the CPU program is not required to be changed, and communication with other IP (b) addresses which are not memorized can be realized only by issuing the instruction through the APP.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (4)
1. an embedded Ethernet communication device comprises an upper computer (1) and is characterized in that the upper computer is connected with an Ethernet controller (2) through a circuit; the Ethernet controller is in communication connection with a single chip microcomputer (3) through a bus, and the single chip microcomputer transmits the information of the functional module to the Ethernet controller for communication through the bus after acquiring the information; the single chip microcomputer configures an Ethernet controller, and the Ethernet controller is provided with a plurality of target ip addresses and port numbers.
2. An embedded ethernet communication device according to claim 1, wherein: the upper computer is a PC terminal.
3. An embedded ethernet communication device according to claim 1, wherein: the single chip microcomputer is provided with an spi interface.
4. an embedded ethernet communication device according to claim 1, wherein: the bus is an SPI interface bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920695558.4U CN209787189U (en) | 2019-05-15 | 2019-05-15 | Embedded Ethernet communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920695558.4U CN209787189U (en) | 2019-05-15 | 2019-05-15 | Embedded Ethernet communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209787189U true CN209787189U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920695558.4U Active CN209787189U (en) | 2019-05-15 | 2019-05-15 | Embedded Ethernet communication device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115514410A (en) * | 2022-11-24 | 2022-12-23 | 成都国星宇航科技股份有限公司 | Remote sensing satellite data transmission system based on Ethernet |
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2019
- 2019-05-15 CN CN201920695558.4U patent/CN209787189U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115514410A (en) * | 2022-11-24 | 2022-12-23 | 成都国星宇航科技股份有限公司 | Remote sensing satellite data transmission system based on Ethernet |
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