CN116610467A - Energy controller serial port management method - Google Patents
Energy controller serial port management method Download PDFInfo
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- CN116610467A CN116610467A CN202310900879.4A CN202310900879A CN116610467A CN 116610467 A CN116610467 A CN 116610467A CN 202310900879 A CN202310900879 A CN 202310900879A CN 116610467 A CN116610467 A CN 116610467A
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- 238000007726 management method Methods 0.000 title claims abstract description 62
- 238000004891 communication Methods 0.000 claims abstract description 18
- 230000003993 interaction Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/547—Remote procedure calls [RPC]; Web services
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- 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
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/546—Message passing systems or structures, e.g. queues
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Abstract
The invention discloses a serial port management method of an energy controller, which relates to the field of electric digital data processing and is used for realizing communication between an acquisition APP and serial port equipment, wherein an application layer, a serial port layer and a physical layer are arranged in a system; the acquisition APP is located at an application layer, and the serial device is located at a physical layer; the serial port layer is used for receiving a request of the application layer, calling the serial port driver to complete data interaction with the physical layer according to the content of the request, and then returning data needed by the application layer to the application layer. According to the invention, the serial port equipment of the application layer and the physical layer is decoupled through system layering, so that the number of times that the acquisition APP is interrupted is reduced, the acquisition working efficiency is improved, meanwhile, the adaptation workload of the acquisition APP is reduced, and the development difficulty is reduced.
Description
Technical Field
The invention relates to the field of electric digital data processing, in particular to a serial port management method of an energy controller.
Background
The energy controller is a device for collecting and transmitting various bottom layer device data, and needs to be provided with various types of peripheral interfaces, such as 485, bluetooth, carrier waves and the like, and the interfaces are connected with the energy controller main control board in a serial port mode. Besides the physical serial port, part of application programs (APP) in the energy controller can also interact data with the acquisition APP in the energy controller in a virtual serial port mode. The serial ports in the energy controllers are various in types, large in quantity and complex in serial port management work.
The current common serial port management method is to collect APP to call serial port driver program and to read and write physical interface directly. This method has the following drawbacks: (1) Each time a physical serial port receives a byte, an interrupt is generated, the interrupt directly interrupts the flow of collecting the APP, a frame of message length is tens to hundreds of bytes, a large amount of interrupts are triggered each time the message is received, and in the multi-serial port equipment such as an energy controller, a large amount of time is spent for processing the interrupt during the operation of collecting the APP, so that the execution efficiency is quite low. (2) Different serial port driving modes have differences, and the acquisition APP needs to adapt to various serial ports, so that development workload is increased.
Disclosure of Invention
The invention provides an energy controller serial port management method, which aims at: (1) The number of times that the acquisition APP is interrupted is reduced, and the acquisition working efficiency is improved; (2) The adaptation workload of the acquisition APP is reduced, and the development difficulty is reduced.
The technical scheme of the invention is as follows:
the serial port management method of the energy controller is used for realizing communication between the acquisition APP and the serial port equipment, and an application layer, a serial port layer and a physical layer are arranged; the acquisition APP is located at an application layer, and the serial device is located at a physical layer; the serial port layer is used for receiving a request of the application layer, calling the serial port driver to complete data interaction with the physical layer according to the content of the request, and then returning data needed by the application layer to the application layer.
As a further improvement of the energy controller serial port management method: the application layer and the serial port layer interact through information flow, and the serial port layer and the physical layer interact through byte flow.
As a further improvement of the energy controller serial port management method: the information flow comprises constraint information, control information and data information;
the constraint information is used for controlling the communication state between the serial port layer and the physical layer;
the control information is used for controlling the serial port layer to convert the data elements in the data information and the communication messages transmitted by the byte stream;
the data information is used for transmitting data elements, and the data elements are format data used for collecting APP.
As a further improvement of the energy controller serial port management method: the communication between the serial port layer and the physical layer operates in a state machine mode, and the constraint information comprises state jump conditions.
As a further improvement of the energy controller serial port management method: the serial port layer comprises an interface sub-layer, a management sub-layer and a driving sub-layer;
the interface sub-layer comprises a constraint management module, an event processing module and a message forwarding module;
the management sublayer comprises a flow control module, a data buffer module and a message queue module;
the driving sub-layer comprises an RXD data receiving module and a TXD data sending module, and is used for realizing data interaction with the physical layer by calling a serial port driving program;
the constraint management module is used for forwarding constraint information in the information flow to the management sublayer, the event processing module is used for forwarding control information in the information flow to the management sublayer, the message forwarding module is used for forwarding data information in the information flow to the message queue module and also used for sending the data information in the message queue module to the acquisition APP through the information flow;
the flow control module is used for extracting data elements from the data information in the message queue module according to the conversion rule in the control information, and putting the data elements into the data buffer module to form a message; the message in the data buffer module is converted into a data element according to a conversion rule in the control information, and the data element is packaged into data information and stored in the message queue module; and the communication state between the serial port layer and the physical layer is controlled according to the constraint information.
As a further improvement of the energy controller serial port management method: when the acquisition APP sends data to the physical layer, the acquisition APP sends constraint information, control information and data information to the interface sub-layer through an information flow, the constraint management module and the event processing module respectively forward the constraint information and the control information to the management sub-layer, and meanwhile, the message forwarding module forwards the data information to the message queue module; the management sub-layer builds a flow control module according to the constraint information and the control information, then the flow control module extracts data elements from the data information in the message queue module according to the conversion rule in the control information, then the data elements are formed into a message to be put into the data buffer module, and then the flow control module controls the TXD data transmission module of the driving sub-layer to transmit the message in the data buffer module to the physical layer according to the constraint information.
As a further improvement of the energy controller serial port management method: when the acquisition APP receives data from the physical layer, the acquisition APP transmits constraint information and control information to the interface sub-layer through an information flow, and the constraint management module and the event processing module respectively forward the constraint information and the control information to the management sub-layer; the management sub-layer builds a flow control module according to constraint information and control information, then the flow control module controls an RXD data receiving module of the driving sub-layer to store messages sent by the physical layer to a data buffer module according to constraint information, the flow control module converts the messages in the data buffer module into data elements according to a conversion rule in the control information, the data elements are packaged into data information and stored in a message queue module, and then a message forwarding module forwards the data information in the message queue module to an acquisition APP.
As a further improvement of the energy controller serial port management method: before the acquisition APP communicates with the serial port layer, a registration application is put forward to the serial port layer, and after registration is successful, the serial port layer establishes an information flow channel for the registered acquisition APP, so that information flow interaction between the acquisition APP and the serial port layer is realized.
As a further improvement of the energy controller serial port management method: the physical layer also comprises a virtual serial port constructed by the bottom layer APP.
Compared with the prior art, the invention has the following positive effects: (1) According to the invention, through system layering, the serial port equipment of the application layer and the physical layer is decoupled, the serial port driver is called from the original acquisition APP into the serial port driver, the serial port layer is responsible for processing interruption and returning the final complete data to the acquisition APP through information flow, so that the interruption times of the acquisition APP are greatly reduced, and the efficiency of acquisition work is improved; (2) The application layer and the serial port layer realize data interaction through data information, data elements contained in the data information are format data used for collecting the APP, the application layer data organization logic is complied with, the APP is not required to be collected for adaptation, meanwhile, the conversion between the data information and the serial port communication message is automatically completed by the serial port layer, the APP is collected by the application layer only needs to process complete data, the bottom details such as serial port type, serial port drive and message generation are not required to be concerned, and development difficulty is greatly reduced; (3) The byte stream without logic meaning is adopted between the serial port layer and the physical layer for data interaction, so that the dependence on hardware is reduced, and the portability is high.
Drawings
FIG. 1 is a system frame diagram of the present invention;
FIG. 2 is a schematic diagram of a transmission flow;
fig. 3 is a schematic diagram of a receiving process.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the accompanying drawings:
the embodiment discloses an energy controller serial port management method, which is used for realizing communication between an acquisition APP and serial port equipment.
As in fig. 1, the system sets an application layer, a serial layer, and a physical layer. The acquisition APP (which may be a plurality of acquisition-related APPs) is located at the application layer. The serial device is located at the physical layer, and not only comprises 485, carrier wave, bluetooth and other physical devices which communicate with the master control board of the seed energy controller through serial ports, but also comprises a virtual serial port of the bottom APP structure.
The serial port layer is a core of the invention and is used for receiving a request of the application layer, calling a serial port driver to complete data interaction with the physical layer according to the content of the request, and then transmitting the data needed by the application layer back to the application layer.
The application layer and the serial port layer interact through information flow, and the serial port layer and the physical layer interact through byte flow.
The data in the information stream is logically significant data for an application layer, and includes constraint information, control information and data information:
the constraint information is used for controlling the communication state between the serial port layer and the physical layer. The communication between the serial layer and the physical layer operates in the form of a state machine. The constraint information includes state jump conditions, such as ST0 (initialization state), ST1 (reception buffer state), ST2 (frame search state), etc., for the data reception state machine.
The control information comprises a plurality of preset data conversion rules, and is used for controlling the serial port layer to carry out bidirectional conversion between data elements in the data information and communication messages transmitted by byte streams.
The data information is used for transmitting data elements, and the data elements are format data used for collecting APP. Besides data elements in specific formats such as voltage, current, electric energy and the like, the data element identification method also comprises information such as unique data element identification, data time marks, data states and the like.
The serial port layer comprises an interface sub-layer, a management sub-layer and a driving sub-layer.
The interface sub-layer comprises a constraint management module, an event processing module and a message forwarding module.
The management sublayer comprises a flow control module, a data buffer module and a message queue module.
The driving sub-layer comprises an RXD data receiving module and a TXD data sending module, and is used for realizing data interaction with the physical layer by calling a serial port driver.
The constraint management module is used for forwarding constraint information in the information flow to the management sub-layer; the event processing module is used for forwarding control information in the information flow to the management sublayer; the message forwarding module is used for forwarding the data information in the information flow to the message queue module and sending the data information in the message queue module to the acquisition APP through the information flow.
The flow control module is used for extracting data elements from the data information in the message queue module according to the conversion rule in the control information, and putting the data elements into the data buffer module to form a message; the message in the data buffer module is converted into a data element according to a conversion rule in the control information, and the data element is packaged into data information and stored in the message queue module; and the communication state between the serial port layer and the physical layer is controlled according to the constraint information.
Furthermore, the flow control module is also used for carrying out rule judgment on the data information content, such as framing rules, frame length calculation rules and the like.
Preferably, before communicating with the serial port layer, the acquisition APP firstly puts forward a registration application to the serial port layer, and after successful registration, the serial port layer establishes an information flow channel for the registered acquisition APP, so as to realize information flow interaction between the acquisition APP and the serial port layer.
For a complete data transmission or reception process, a plurality of data elements are required, which are included in a plurality of data information. The data information is stored in the message queue module and is converted into serial communication messages through the data element which is an intermediate data form.
As shown in fig. 2, when the acquisition APP sends data to the physical layer, the acquisition APP sends constraint information, control information and data information to the interface sub-layer through an information flow, the constraint management module and the event processing module respectively forward the constraint information and the control information to the management sub-layer, and meanwhile, the message forwarding module forwards the data information to the message queue module; the management sub-layer builds a flow control module according to the constraint information and the control information, then the flow control module extracts data elements from the data information in the message queue module according to the conversion rule in the control information, then the data elements are formed into a message to be put into the data buffer module, and then the flow control module controls the TXD data transmission module of the driving sub-layer to transmit the message in the data buffer module to the physical layer according to the constraint information.
As shown in fig. 3, when the acquisition APP receives data from the physical layer, the acquisition APP transmits constraint information and control information to the interface sub-layer through an information flow, and the constraint management module and the event processing module forward the constraint information and the control information to the management sub-layer respectively; the management sub-layer builds a flow control module according to constraint information and control information, then the flow control module controls an RXD data receiving module of the driving sub-layer to store messages sent by the physical layer to a data buffer module according to constraint information, the flow control module converts the messages in the data buffer module into data elements according to a conversion rule in the control information, the data elements are packaged into data information and stored in a message queue module, and then a message forwarding module forwards the data information in the message queue module to an acquisition APP.
Claims (9)
1. The serial port management method of the energy controller is used for realizing communication between the acquisition APP and the serial port equipment, and is characterized in that: setting an application layer, a serial port layer and a physical layer; the acquisition APP is located at an application layer, and the serial device is located at a physical layer; the serial port layer is used for receiving a request of the application layer, calling the serial port driver to complete data interaction with the physical layer according to the content of the request, and then returning data needed by the application layer to the application layer.
2. The energy controller serial port management method of claim 1, wherein: the application layer and the serial port layer interact through information flow, and the serial port layer and the physical layer interact through byte flow.
3. The energy controller serial port management method of claim 2, wherein: the information flow comprises constraint information, control information and data information;
the constraint information is used for controlling the communication state between the serial port layer and the physical layer;
the control information is used for controlling the serial port layer to convert the data elements in the data information and the communication messages transmitted by the byte stream;
the data information is used for transmitting data elements, and the data elements are format data used for collecting APP.
4. The energy controller serial port management method of claim 3, wherein: the communication between the serial port layer and the physical layer operates in a state machine mode, and the constraint information comprises state jump conditions.
5. The energy controller serial port management method of claim 4, wherein: the serial port layer comprises an interface sub-layer, a management sub-layer and a driving sub-layer;
the interface sub-layer comprises a constraint management module, an event processing module and a message forwarding module;
the management sublayer comprises a flow control module, a data buffer module and a message queue module;
the driving sub-layer comprises an RXD data receiving module and a TXD data sending module, and is used for realizing data interaction with the physical layer by calling a serial port driving program;
the constraint management module is used for forwarding constraint information in the information flow to the management sublayer, the event processing module is used for forwarding control information in the information flow to the management sublayer, the message forwarding module is used for forwarding data information in the information flow to the message queue module and also used for sending the data information in the message queue module to the acquisition APP through the information flow;
the flow control module is used for extracting data elements from the data information in the message queue module according to the conversion rule in the control information, and putting the data elements into the data buffer module to form a message; the message in the data buffer module is converted into a data element according to a conversion rule in the control information, and the data element is packaged into data information and stored in the message queue module; and the communication state between the serial port layer and the physical layer is controlled according to the constraint information.
6. The energy controller serial port management method of claim 5, wherein: when the acquisition APP sends data to the physical layer, the acquisition APP sends constraint information, control information and data information to the interface sub-layer through an information flow, the constraint management module and the event processing module respectively forward the constraint information and the control information to the management sub-layer, and meanwhile, the message forwarding module forwards the data information to the message queue module; the management sub-layer builds a flow control module according to the constraint information and the control information, then the flow control module extracts data elements from the data information in the message queue module according to the conversion rule in the control information, then the data elements are formed into a message to be put into the data buffer module, and then the flow control module controls the TXD data transmission module of the driving sub-layer to transmit the message in the data buffer module to the physical layer according to the constraint information.
7. The energy controller serial port management method of claim 5, wherein: when the acquisition APP receives data from the physical layer, the acquisition APP transmits constraint information and control information to the interface sub-layer through an information flow, and the constraint management module and the event processing module respectively forward the constraint information and the control information to the management sub-layer; the management sub-layer builds a flow control module according to constraint information and control information, then the flow control module controls an RXD data receiving module of the driving sub-layer to store messages sent by the physical layer to a data buffer module according to constraint information, the flow control module converts the messages in the data buffer module into data elements according to a conversion rule in the control information, the data elements are packaged into data information and stored in a message queue module, and then a message forwarding module forwards the data information in the message queue module to an acquisition APP.
8. The energy controller serial port management method according to any one of claims 1 to 7, wherein: before the acquisition APP communicates with the serial port layer, a registration application is put forward to the serial port layer, and after registration is successful, the serial port layer establishes an information flow channel for the registered acquisition APP, so that information flow interaction between the acquisition APP and the serial port layer is realized.
9. The energy controller serial port management method according to any one of claims 1 to 7, wherein: the physical layer also comprises a virtual serial port constructed by the bottom layer APP.
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