CN103336755B - Program control multimode serial port distributor - Google Patents
Program control multimode serial port distributor Download PDFInfo
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- CN103336755B CN103336755B CN201310227171.3A CN201310227171A CN103336755B CN 103336755 B CN103336755 B CN 103336755B CN 201310227171 A CN201310227171 A CN 201310227171A CN 103336755 B CN103336755 B CN 103336755B
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Abstract
The present invention relates to a kind of program control multimode serial port distributor, its technical characteristics is: comprise FPGA module, power module, multiple MAX232 serial port chip, multiple MAX3160 serial port chip and memory module, power module is connected to FPGA module, memory module, MAX232 serial port chip and MAX3160 serial port chip for its power supply, FPGA module is connected with MAX232 serial port chip, MAX3160 serial port chip, memory module, and one of them MAX232 serial port chip connects with host computer as control serial ports.The present invention is reasonable in design, any linkage function of Multi-serial port of two kinds of patterns is realized by FPGA module and be connected MAX232 serial port chip and MAX3160 serial port chip, the mode of operation of MAX3160 interface and the connected mode of any serial ports can be adjusted under the control of host computer, realize multiple serial equipment Mode change and free interconnecting function, there is easy for installation, dependable performance, the feature such as flexible and convenient to use.
Description
Technical field
The invention belongs to serial port communication technology field, especially a kind of program control multimode serial port distributor.
Background technology
Serial communication is a kind of communication modes carrying out transmitting data by step-by-steps such as data signal line, ground wire, control lines.Because serial communication transmits information one by one on a transmission line, transmission line used is few, therefore, can be widely used in external unit that those and computing machine people-machine switching equipment not far from one another and serial store as terminal, printer, logic analyser, disk etc.Serial communication comprises RS232 serial ports and RS422 serial ports, a lot of communication facilities is included in some main equipments or system, these communication facilitiess need to carry out in real time having communicated data exchanging function by serial ports, the communication facilities of existing RS232 serial ports between above-mentioned communication facilities, there is again the communication facilities of RS422 serial ports, and data interaction complex forms, how making the communication facilities of their distinct interface carry out efficient communication is problem in the urgent need to address at present.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, propose a kind of reasonable in design, can effectively carry out multichannel interface conversion function program control multimode serial port distributor.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of program control multimode serial port distributor, comprise FPGA module, power module, multiple MAX232 serial port chip, multiple MAX3160 serial port chip and memory module, power module is connected to FPGA module, memory module, MAX232 serial port chip and MAX3160 serial port chip for its power supply, FPGA module is connected with MAX232 serial port chip, MAX3160 serial port chip, memory module, and one of them MAX232 serial port chip connects with host computer as control serial ports.
And, described FPGA module comprises bootstrap module, parsing of the data stream module, control register, interconnection network module, control pin and data pins, bootstrap module and control register are connected with the program storage in memory module and data-carrier store respectively, this bootstrap module is also connected with control register and parsing of the data stream module, this parsing of the data stream module respectively with control serial ports, control register and interconnection network module are connected, this control register is also connected with control pin and interconnection network module, this interconnection network module is also connected with data pins, control pin to be connected with MAX3160 serial port chip with MAX232 serial port chip respectively with data pins.
And the mode of operation that described host computer is connected for arranging FPGA with parsing of the data stream module by controlling serial ports, the mode of operation of described FPGA is operational mode or debugging mode.
And described host computer is by controlling the connected mode that is connected for arranging any serial ports with parsing of the data stream module of serial ports, and the connected mode of described any serial ports is interconnected, one-to-many connection between two or mutually connected in series.
And the mode of operation that described host computer is connected for arranging MAX3160 chip with parsing of the data stream module by controlling serial ports, the mode of operation of described MAX3160 chip is RS422 pattern or RS232 pattern.
And described memory module comprises program storage and data-carrier store.
Advantage of the present invention and good effect are:
The present invention realizes any linkage function of Multi-serial port of two kinds of patterns by FPGA module and be connected MAX232 serial port chip and MAX3160 serial port chip, under the control of host computer, the mode of operation of MAX3160 interface and the connected mode of any serial ports can be adjusted, multiple serial equipment Mode change and free interconnecting function can be realized, there is easy for installation, dependable performance, the feature such as flexible and convenient to use.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is FPGA internal logic graph of a relation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
A kind of program control multimode serial port distributor, as shown in Figure 1, comprises FPGA module, power module, multiple MAX232 serial port chip, multiple MAX3160 serial port chip, memory module and arranges switch.Power module is connected to FPGA module, memory module and MAX232 serial port chip and MAX3160 serial port chip are its power supply, FPGA module and MAX232 serial port chip, MAX3160 serial port chip, memory module, control serial ports and arrange switch to be connected, FPGA module control MAX232X chip, MAX3160 serial port chip realizes the communication control function to each serial port chip, can distribute and distribute arbitrarily between serial ports an interconnected or serial ports between two and be connected with multiple serial ports, FPGA module can also arrange the mode of operation of MAX3160 serial port chip simultaneously, the mode of operation of MAX3160 serial port chip comprises 422 serial ports patterns or 232 serial ports patterns, each MAX232X chip is all connected with 9 pin RS232 serial ports to realize RS232 communication function, and each MAX3160 serial port chip all connects 25 pin RS422 serial ports to realize RS422 communication function or RS232 communication function.In the present embodiment, the quantity of 9 pin RS232 serial ports is 16, and corresponding MAX232 serial port chip is 16, and the quantity of 25 pin RS422 serial ports is 30, and corresponding MAX3160 serial port chip is 30.In above-mentioned MAX232 serial port chip, using one of them MAX232 serial port chip as control serial ports, FPGA module to be connected with host computer by this control serial ports and realizes the communication function with host computer, FPGA module can receive connection setting command and the order of serial ports Connection inquiring of host computer, arrange according to the mode of operation of setting command to each serial port chip of host computer on the one hand, according to the querying command of host computer, the duty of all for FPGA serial ports and annexation are sent to host computer on the other hand.FPGA module realizes program by memory module and stores and data storage function, this memory module comprises program storage and data-carrier store, wherein program storage is for storing FPGA control program, data-carrier store is for storing FPGA data, when program control multimode serial port distributor powers on, FPGA module reads data automatically to revert to the duty before power down from memory module.Arrange the mode of operation of switch for FPGA, can complete above-mentioned controlling functions in the operating mode, under debugging mode, host computer completes the debug function to program control multimode serial port distributor.
As shown in Figure 2, FPGA module comprises bootstrap module, parsing of the data stream module, control register, interconnection network module, control pin and data pins, bootstrap module and control register are connected with the program storage in memory module and data-carrier store respectively, this bootstrap module is also connected with control register and parsing of the data stream module, this parsing of the data stream module respectively with control serial ports, control register and interconnection network module are connected, this control register is also connected with control pin and interconnection network module, this interconnection network module is also connected with data pins, control pin to be connected with MAX3160 serial port chip with MAX232 serial port chip respectively with data pins.The principle of work of FPGA module is: FPGA module, as the process core of program control multimode serial ports, realizes the function such as control of interconnected and serial ports pattern of computer program-control, Multi-serial port.After system electrification, the program code be kept in program register is loaded in FPGA by bootstrap module automatically, with the operation of control data stream parsing module and control register.Serial communication between the continual maintenance of parsing of the data stream module and host computer: parsing of the data stream module receives the data that host computer transmits, carrying out analysis judgment is order or tune-up data, if order, sent into control register and preserved stored in data-carrier store; If tune-up data, sent into interconnection network module.Parsing of the data stream module collects the data from control register, interconnection network module simultaneously, is passed to host computer.Control register arranges according to the order that parsing of the data stream module transmits the level that FPGA controls pin, realizes the Schema control of work serial ports.Interconnection network module adjusts the mode of operation of MAX3160 interface and the connected mode of any serial ports according to the order that parsing of the data stream module transmits, and realizes multiple serial equipment Mode change and free interconnecting function.
It is emphasized that; embodiment of the present invention is illustrative; instead of it is determinate; therefore the present invention is not limited to the embodiment described in embodiment; every other embodiments drawn by those skilled in the art's technical scheme according to the present invention, belong to the scope of protection of the invention equally.
Claims (5)
1. a program control multimode serial port distributor, it is characterized in that: comprise FPGA module, power module, multiple MAX232 serial port chip, multiple MAX3160 serial port chip and memory module, power module is connected to FPGA module, memory module, MAX232 serial port chip and MAX3160 serial port chip for its power supply, FPGA module is connected with MAX232 serial port chip, MAX3160 serial port chip, memory module, and one of them MAX232 serial port chip connects with host computer as control serial ports;
Described FPGA module comprises bootstrap module, parsing of the data stream module, control register, interconnection network module, control pin and data pins, bootstrap module and control register are connected with the program storage in memory module and data-carrier store respectively, this bootstrap module is also connected with control register and parsing of the data stream module, this parsing of the data stream module respectively with control serial ports, control register and interconnection network module are connected, this control register is also connected with control pin and interconnection network module, this interconnection network module is also connected with data pins, control pin to be connected with MAX3160 serial port chip with MAX232 serial port chip respectively with data pins.
2. program control multimode serial port distributor according to claim 1, it is characterized in that: the mode of operation that described host computer is connected for arranging FPGA with parsing of the data stream module by controlling serial ports, the mode of operation of described FPGA is operational mode or debugging mode.
3. program control multimode serial port distributor according to claim 1, it is characterized in that: described host computer is by controlling the connected mode that is connected for arranging any serial ports with parsing of the data stream module of serial ports, and the connected mode of described any serial ports is interconnected, one-to-many connection between two or mutually connected in series.
4. program control multimode serial port distributor according to claim 1, it is characterized in that: the mode of operation that described host computer is connected for arranging MAX3160 chip with parsing of the data stream module by controlling serial ports, the mode of operation of described MAX3160 chip is RS422 pattern or RS232 pattern.
5. program control multimode serial port distributor according to claim 1, is characterized in that: described memory module comprises program storage and data-carrier store.
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CN201310227171.3A CN103336755B (en) | 2013-06-08 | 2013-06-08 | Program control multimode serial port distributor |
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CN106339238B (en) * | 2016-08-26 | 2020-03-24 | 卢军 | Serial port multi-mode automatic multiplexing chip fast programming system |
CN110704352A (en) * | 2019-09-25 | 2020-01-17 | 苏州浪潮智能科技有限公司 | Multi-serial port management equipment, method and device and storage medium |
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EP0506136A2 (en) * | 1991-03-29 | 1992-09-30 | International Business Machines Corporation | Broadcast/switching apparatus for executing broadcast/multi-cast transfers over unbuffered asynchronous switching networks |
CN101799678A (en) * | 2009-12-30 | 2010-08-11 | 北京宇航系统工程研究所 | Three-way asynchronous serial-port data real-time synchronous transmitting system |
CN202084028U (en) * | 2011-06-03 | 2011-12-21 | 南京理工大学 | Modularized multi-serial port expanding device |
CN103136028A (en) * | 2013-03-11 | 2013-06-05 | 西北工业大学 | FLASH memorizer long-distance on-line upgrade method based on field programmable gate array (FPGA) |
Family Cites Families (2)
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KR100518572B1 (en) * | 2003-05-15 | 2005-10-04 | 삼성전자주식회사 | Method and appartus for communicating in serial multi port, and recording medium |
CN203376746U (en) * | 2013-06-08 | 2014-01-01 | 中国人民解放军92859部队 | Novel program control multi-mode serial port distributor |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0506136A2 (en) * | 1991-03-29 | 1992-09-30 | International Business Machines Corporation | Broadcast/switching apparatus for executing broadcast/multi-cast transfers over unbuffered asynchronous switching networks |
CN101799678A (en) * | 2009-12-30 | 2010-08-11 | 北京宇航系统工程研究所 | Three-way asynchronous serial-port data real-time synchronous transmitting system |
CN202084028U (en) * | 2011-06-03 | 2011-12-21 | 南京理工大学 | Modularized multi-serial port expanding device |
CN103136028A (en) * | 2013-03-11 | 2013-06-05 | 西北工业大学 | FLASH memorizer long-distance on-line upgrade method based on field programmable gate array (FPGA) |
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