CN104679704A - Single bus communication system - Google Patents
Single bus communication system Download PDFInfo
- Publication number
- CN104679704A CN104679704A CN201310647357.4A CN201310647357A CN104679704A CN 104679704 A CN104679704 A CN 104679704A CN 201310647357 A CN201310647357 A CN 201310647357A CN 104679704 A CN104679704 A CN 104679704A
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- communication system
- single bus
- bus communication
- unibus
- led
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Abstract
Disclosed is a single bus communication system. A host system is connected with a wire device through a bus, a single bus chip transmits address information, control information and data information through a signal line, and the signal line can supply power for a single bus device. A serial interface mode is adopted between the single bus communication system and a CPU (central processing unit), only four port lines are occupied, a decoder is arranged inside the single bus communication system and can directly receive BCD (binary coded decimal) or hexadecimal codes, the single bus communication system simultaneously has two decoding modes, an LED (light-emitting diode) digital tube position addressing and segment addressing are realized, various control commands such as blanking and flash attribute are transmitted, programming is flexible, cyclic left movement and cyclic right movement instructions are transmitted, a driver is arranged inside the single bus communication system and can directly drive an LED (light-emitting diode) without peripheral components, the single bus communication system has a cascading function and further has the functions of automatically eliminating shake and recognizing key values, and a keyboard interface with more than 8-bit display or 64 keys can be conveniently implemented.
Description
Technical field
The present invention relates to electronic information field, particularly relate to field of wireless communications systems.
Background technology
Along with electronization and the informationalized continuous increase not including development and demand, the communication technology serves more and more important, irreplaceable effect.Spi bus system is a kind of synchronous serial Peripheral Interface, and it can make MCU and various peripherals carry out in a serial fashion communicating to exchange information.Periphery arranges FLASHRAM, network controller, LCD display driver, A/D converter and MCU etc.Spi bus system can directly and the multiple standards peripheral components direct interface of each manufacturer production, and this interface generally uses 4 lines: the input of serial time clock line (SCK), main frame/from machine output data line MISO, main frame export/from machine input data line MOSI and Low level effective from machine select line SS (the SPI interface chip had with look-at-me line INT or INT, the SPI interface chip that has do not have main frame export/from machine input data line MOSI).There is the shortcomings such as jitter, transfer efficiency be low in existing communication system major part, have impact on normal transmission and the use of signal, make troubles to live and work.
Summary of the invention
In order to overcome jitter that existing spi bus communication system exists, transfer efficiency etc. problem, the invention provides a kind of efficient spi bus communication system.
The technical scheme that the present invention is adopted for achieving the above object is: unibus communication system, host computer system connects wire device by bus, unibus chip carries out the transmission of address information, control information and data message by a signal wire, and by this signal wire for single wire bus device provides power supply.
Also comprise LED control and drive system MAX7219, HD7279, integrated house dog, voltage monitoring.
Main frame inputoutput data line is MISO data line.
Unibus communication system of the present invention, and adopt serial interface mode between CPU, only take 4 mouth lines; Inner containing code translator, directly can receive binary-coded decimal or 16 ary codes, there are two kinds of decoded modes simultaneously, realize LED charactron bit addressing and segment addressing, the instruction of the various control such as blanking and blinking attribute, flexible in programming; Ring shift left and ring shift right instruction; Inner can have cascade function by Direct driver LED containing driver without the need to peripheral cell, can realize more than 8 displays or the keyboard interface more than 64 keys easily; There is the function automatically eliminating shake key range key assignments.
Accompanying drawing explanation
Fig. 1 is spi bus communication system principle figure of the present invention.
Embodiment
Unibus communication system principle of the present invention as shown in Figure 1, spi bus communication system, main frame connects A/D converter, E2PROM and from machine by serial line interface, main frame and be single-chip microcomputer from machine, also comprise LED control and drive system MAX7219, HD7279, integrated house dog, voltage monitoring, main frame input/from machine output data line be MISO data line.Unibus (1-Wire) is that Dallas company releases peripheral Serial Extension bus, adopts single signal wire to complete the transmitted in both directions of data.Bussing technique has three outstanding features: unibus chip carries out the transmission of address information, control information and data message by a signal wire, and by this signal wire for single wire bus device provides power supply; Each unibus chip has globally unique access sequence number, when multiple single wire bus device hangs on same unibus, is all distinguished by this unique sequence numbers the access of all unibus chips; Unibus chip in the course of the work, does not need to provide external power supply, and steals power supply by " bus stealing " technology that itself has from bus.
The present invention is described by embodiment, and those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various change or equivalence replacement to these characteristic sum embodiments.In addition, under the teachings of the present invention, can modify to adapt to concrete situation and material to these characteristic sum embodiments and can not the spirit and scope of the present invention be departed from.Therefore, the present invention is not by the restriction of specific embodiment disclosed herein, and the embodiment in the right of all the application of falling into all belongs to protection scope of the present invention.
Claims (3)
1. unibus communication system, is characterized in that: host computer system connects wire device by bus, and unibus chip carries out the transmission of address information, control information and data message by a signal wire, and by this signal wire for single wire bus device provides power supply.
2. unibus communication system according to claim 1, is characterized in that: also comprise LED control and drive system MAX7219, HD7279, integrated house dog, voltage monitoring.
3. unibus communication system according to claim 1, is characterized in that: main frame inputoutput data line is MISO data line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647357.4A CN104679704A (en) | 2013-12-02 | 2013-12-02 | Single bus communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647357.4A CN104679704A (en) | 2013-12-02 | 2013-12-02 | Single bus communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104679704A true CN104679704A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310647357.4A Pending CN104679704A (en) | 2013-12-02 | 2013-12-02 | Single bus communication system |
Country Status (1)
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| CN (1) | CN104679704A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208021A (en) * | 2015-09-14 | 2015-12-30 | 英特格灵芯片(天津)有限公司 | Data communication method and system |
-
2013
- 2013-12-02 CN CN201310647357.4A patent/CN104679704A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208021A (en) * | 2015-09-14 | 2015-12-30 | 英特格灵芯片(天津)有限公司 | Data communication method and system |
| CN105208021B (en) * | 2015-09-14 | 2019-01-22 | 英特格灵芯片(天津)有限公司 | A kind of data communication method and its system |
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| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Lin Nan Document name: Notification of Publication of the Application for Invention |
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| DD01 | Delivery of document by public notice |
Addressee: Lin Nan Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Lin Nan Document name: Notification that Application Deemed to be Withdrawn |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |
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| WD01 | Invention patent application deemed withdrawn after publication |