CN203180949U - A bus communication system based on UARTs - Google Patents
A bus communication system based on UARTs Download PDFInfo
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- CN203180949U CN203180949U CN 201320143809 CN201320143809U CN203180949U CN 203180949 U CN203180949 U CN 203180949U CN 201320143809 CN201320143809 CN 201320143809 CN 201320143809 U CN201320143809 U CN 201320143809U CN 203180949 U CN203180949 U CN 203180949U
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- communication system
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- bus communication
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Abstract
The utility model relates to a bus communication system based on UARTs. The bus communication system based on UARTs is characterized in that the bus communication system based on UARTs comprises a master computer and n slave computers, wherein n is a positive integer more than or equal to 2, that the TXD end of the master computer is connected with the RXD ends of the n slave computers, and that the RXD end of the master computer is connected with the TXD/Z ends of the n slave computers. In the bus communication system, a PC master computer is connected with multiple transmitter slave computers through a bus communication manner of UARTs. Therefore, the bus communication system is capable of achieving broadcasting and polling of transmitters.
Description
Technical field
The utility model relates to a kind of bus-type communication system based on UART, is applicable to Industry Control instrument, the transmitter of UART communication.
Background technology
The communication modes that standard UART adopts is communication modes simply one to one, and this communication modes can't satisfy a PC host computer (main UART) to the communication of many transmitter slave computers (from UART), does not therefore satisfy communication needs such as broadcasting and poll.
The utility model content
In view of this, the purpose of this utility model provides a kind of bus-type communication system based on UART, realizes broadcasting and poll to transmitter.
The utility model adopts following scheme to realize: a kind of bus-type communication system based on UART, it is characterized in that: comprise an a main frame and n slave, n is the positive integer more than or equal to 2, the TXD end of described main frame connects the RXD end of a described n slave, and the RXD end of described main frame connects the TXD/Z end of a described n slave.
In the utility model one embodiment, described n equals 16.
In the utility model one embodiment, described main frame is a PC.
In the utility model one embodiment, described slave is a transmitter.
The utility model links together a upper main frame of PC and many next slaves of the transmitter bus-type communication modes by UART, can realize broadcasting and poll to transmitter.
Description of drawings
Fig. 1 is that the utility model is based on the bus-type communication system theory diagram of UART.
Fig. 2 is the theory diagram of the utility model one embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below will the utility model be described in further detail by specific embodiment and relevant drawings.
As shown in Figure 1, the utility model provides a kind of bus-type communication system based on UART, it is characterized in that: comprise an a main frame and n slave, n is the positive integer more than or equal to 2, the TXD end of described main frame connects the RXD end of a described n slave, and the RXD end of described main frame connects the TXD/Z end of a described n slave.In the utility model one preferred embodiment, described main frame is a PC; Described slave is transmitter.
As shown in Figure 2, in the utility model one preferred embodiment, described n equals 16; Present embodiment provides a kind of bus-type communication system based on UART, it is characterized in that: comprise a main frame and 16 slaves (slave 0, slaves 1 ... slave 15), described main frame is a PC, and described PC includes a UART module; Described slave is transmitter, and described transmitter includes a UART module, and the TXD end of described PC connects the RXD end of described 16 transmitters, and the RXD end of described PC connects the TXD/Z end of described 16 transmitters.
In order to allow those skilled in the art better understand hardware structure of the present utility model; hardware structure below in conjunction with integral body is described further its use principle; here be stressed that; what the utility model will be protected is above-mentioned hardware connection features; as for, following operation principle is only as the concrete a kind of using method of above-mentioned hardware structure is not required protection.
The utility model links together a upper PC main frame and many s' the next slave of the transmitter bus-type communication modes by UART.The TXD/Z pin of each slave is set to high-impedance state Z at ordinary times, when main frame sends signal by the TXD end, the RXD leads ends that is connected in each slave on the UART bus receives signal, and parse the slave addresses that signal will transmit by the processor of being located on the slave, when satisfying the address requirement, this slave is beamed back answer signal by another is set to the TXD end in order to the pin TXD/Z that sends signal to the UART bus, and receives signal through the RXD of main frame leads ends; And other slave is also being resolved signal, when finding that mail returned on ground of incorrect address closes when requiring, and will continue to keep the TXD/Z pin to be set to high-impedance state Z, to prevent from disturbing the URAT bus.System by above-mentioned form connects, and can realize broadcasting and poll to transmitter.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (4)
1. bus-type communication system based on UART, it is characterized in that: comprise an a main frame and n slave, n is the positive integer more than or equal to 2, and the TXD end of described main frame connects the RXD end of a described n slave, and the RXD end of described main frame connects the TXD/Z end of a described n slave.
2. the bus-type communication system based on UART according to claim 1, it is characterized in that: described n equals 16.
3. the bus-type communication system based on UART according to claim 1, it is characterized in that: described main frame is a PC.
4. the bus-type communication system based on UART according to claim 1, it is characterized in that: described slave is a transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143809 CN203180949U (en) | 2013-03-27 | 2013-03-27 | A bus communication system based on UARTs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143809 CN203180949U (en) | 2013-03-27 | 2013-03-27 | A bus communication system based on UARTs |
Publications (1)
| Publication Number | Publication Date |
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| CN203180949U true CN203180949U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320143809 Expired - Lifetime CN203180949U (en) | 2013-03-27 | 2013-03-27 | A bus communication system based on UARTs |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106453383A (en) * | 2016-11-07 | 2017-02-22 | 深圳拓邦股份有限公司 | UART (universal asynchronous receiver/transmitter)-based master-slave multi-processor communication system and method |
| CN108521854A (en) * | 2017-05-17 | 2018-09-11 | 深圳市大疆创新科技有限公司 | Communication control method, communication master device and communication system |
| CN108614789A (en) * | 2018-04-08 | 2018-10-02 | 深圳市未来天使机器人有限公司 | A kind of communication system and method for the serial bus with handshake mechanism |
| CN112765075A (en) * | 2020-12-31 | 2021-05-07 | 超级智慧家(上海)物联网科技有限公司 | One-to-many communication method and system based on serial port |
| CN113051201A (en) * | 2019-12-26 | 2021-06-29 | 福州高意通讯有限公司 | Simplified control signal bus system applied to multi-device interaction and application |
-
2013
- 2013-03-27 CN CN 201320143809 patent/CN203180949U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106453383A (en) * | 2016-11-07 | 2017-02-22 | 深圳拓邦股份有限公司 | UART (universal asynchronous receiver/transmitter)-based master-slave multi-processor communication system and method |
| CN106453383B (en) * | 2016-11-07 | 2019-12-24 | 深圳拓邦股份有限公司 | UART-based master-slave multi-machine communication system and method |
| CN108521854A (en) * | 2017-05-17 | 2018-09-11 | 深圳市大疆创新科技有限公司 | Communication control method, communication master device and communication system |
| CN108614789A (en) * | 2018-04-08 | 2018-10-02 | 深圳市未来天使机器人有限公司 | A kind of communication system and method for the serial bus with handshake mechanism |
| CN108614789B (en) * | 2018-04-08 | 2020-06-19 | 深圳市未来天使机器人有限公司 | Communication system and method of serial port bus with handshake mechanism |
| CN113051201A (en) * | 2019-12-26 | 2021-06-29 | 福州高意通讯有限公司 | Simplified control signal bus system applied to multi-device interaction and application |
| CN112765075A (en) * | 2020-12-31 | 2021-05-07 | 超级智慧家(上海)物联网科技有限公司 | One-to-many communication method and system based on serial port |
| CN112765075B (en) * | 2020-12-31 | 2024-09-24 | 超级智慧家(上海)物联网科技有限公司 | One-to-many communication method and system based on serial port |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |