CN111290793A - Method for initializing MOST network - Google Patents
Method for initializing MOST network Download PDFInfo
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- CN111290793A CN111290793A CN202010030890.6A CN202010030890A CN111290793A CN 111290793 A CN111290793 A CN 111290793A CN 202010030890 A CN202010030890 A CN 202010030890A CN 111290793 A CN111290793 A CN 111290793A
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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
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
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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
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
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Abstract
The invention belongs to the technical field of MOST networks, and particularly relates to a method for initializing an MOST network, which comprises the steps of automatically completing the logic process of MOST network initialization by using INIC chips of a host and a terminal through a transmission medium; if the MOST network is initialized successfully, the INIC chips of the host and the terminal respectively send initialization success messages to the host communication controller and the terminal communication controller, so that the CPUs of the host and the terminal respectively acquire the successful initialization results; if the initialization of the MOST network fails, the INIC chips of the host and the terminal respectively send initialization failure messages to the host communication controller and the terminal communication controller, so that the CPUs of the host and the terminal respectively acquire the initialization failure results. Compared with the prior art, the invention effectively simplifies the work flow, reduces the burden of the CPU, saves the IO resources of the CPU and the INIC chip and improves the initialization efficiency of the MOST network.
Description
Technical Field
The invention belongs to the technical field of MOST networks, and particularly relates to a method for initializing an MOST network.
Background
MOST (Media Oriented Systems Transport) networks, as a vehicle multimedia network transmission technology, are responsible for data transmission of vehicle infotainment and telematics devices, and mainly transmit entertainment data information in a ring topology. The basic unit of a MOST ring network is a node. A node is a logical unit that can communicate independently and transmit data bidirectionally. The nodes are connected in series to form a closed MOST ring network.
Fig. 1 to 3 are structural frame diagrams of single-ring, double-ring and multi-ring MOST network systems, respectively, in which a host can support one or more MOST network rings, one MOST network ring can be connected with 64 communication nodes in series, and a node installed on the host is a special node which serves as a platform for collecting, integrating and distributing all information in the entire MOST network system. The host collects different entertainment information, packages the related information into MOST data format according to the requirements of other nodes, converts the MOST data format into digital signals and transmits the digital signals on corresponding transmission media, and the digital signals can be numbered as '0'; other nodes are installed on the terminal (the number value range is more than or equal to 1 and less than or equal to 63), and the terminal is a receiving end with human-computer interaction. The user puts forward related information requirements to the host through the receiving end, extracts and decapsulates the information in the MOST data format through optical fibers or coaxial lines, and outputs the information to a display screen of the receiving end.
The MOST network provides a network multimedia on-demand service function, and each terminal can independently and parallelly broadcast media programs such as movies, music, MTV and the like stored on a host. Before providing these services, however, the MOST network must complete the network initialization work, including the initialization of network communication interfaces such as MAC address assignment and IP address of each node in the MOST ring network, i.e. the nodes of the host and the terminal need to form a closed ring network and assign unique logical node numbers. At present, the initialization of the MOST network is mainly completed by a CPU and an INIC chip of a host and a terminal, wherein the CPU includes an i2c controller and a mlb controller, i2c is a commonly used computer communication bus, mlb is a multimedia local communication bus defined by the MOST network, and both support two-way communication; and the INIC chip realizes the digital transmission of MOST network data, and when the MOST network is successfully initialized, the terminal can independently receive multimedia data such as movies, music, MTV and the like sent by the mlb from the host through the mlb controller. As shown in fig. 4, a flowchart of the MOST network initialization in the prior art is shown, but at least the following defects exist in the current execution initialization process:
1) in the initialization process, an i2c bus is needed, and the pin IO resource of a CPU and the pin IO resource of an INIC chip are consumed;
2) the CPU needs to process the transmission of the MOST network initialization instruction and the feedback abnormality of the result, the process is complicated, and the processing burden of the CPU is increased.
Therefore, it is necessary to improve upon the above-described prior art to reduce the consumption of resources and the burden on the CPU.
Disclosure of Invention
The invention aims to: aiming at the defects of the prior art, the method for initializing the MOST network can effectively simplify the work flow, reduce the burden of a CPU, save IO (input/output) resources of the CPU and an INIC (input/output) chip and improve the efficiency of initializing the MOST network.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of MOST network initialization, comprising the steps of:
step 1, automatically completing a logic process of MOST network initialization by using an INIC chip of a host and an INIC chip of a terminal through a transmission medium;
step 2, if the MOST network is initialized successfully, the INIC chip of the host computer sends a message of successful initialization to the host computer communication controller, so that the CPU of the host computer obtains the result of successful initialization; the INIC chip of the terminal sends an initialization success message to the terminal communication controller, so that a CPU of the terminal acquires a result of successful initialization;
step 3, if the MOST network fails to be initialized, the INIC chip of the host computer sends a message of initialization failure to the host computer communication controller, so that the CPU of the host computer obtains the result of initialization failure; and the INIC chip of the terminal sends an initialization failure message to the terminal communication controller, so that the CPU of the terminal acquires the result of the initialization failure.
The initialization process of the MOST network includes the MAC address assignment of each node in the MOST ring network and the initialization of network communication interfaces such as IP addresses. The MAC address is not a hardware physical address of the MOST chip, but is virtualized from the MOST ring network. In the using process, the INIC chip does not need to be configured through the i2c controller, so that the logic process of MOST network initialization can be automatically completed by using the INIC chip, and the workload of a CPU is reduced.
As an improvement of the method for initializing the MOST network in the present invention, the terminal communication controller is a terminal mlb controller or a terminal usb controller.
As an improvement to the method for initializing the MOST network in the present invention, the host communication controller is a host mlb controller or a host usb controller.
As an improvement to the method of MOST network initialization described in the present invention, the host supports at least one MOST network ring.
As an improvement to the method of MOST network initialization described in the present invention, the number of MOST network rings is equal to the sum of the number of host mlb controllers and host usb controllers in the host.
As an improvement to the method for initializing the MOST network described in the present invention, the transmission medium is optical or coaxial.
As an improvement on the method for initializing the MOST network, the INIC chip is a microchip MOST network chip of the model of OS81118 or OS 81110.
Compared with the prior art, the invention has at least the following beneficial effects:
1) the initialization process of the MOST network is completed by using the INIC chip, so that the CPU only needs to wait for the initialization result, the work flow is greatly simplified, the work load of the CPU of the host and the terminal is effectively reduced, and the initialization efficiency of the MOST network is improved;
2) in the process of initializing the MOST network, the host and the terminal do not need to use a traditional i2c controller, so that IO resources of CPUs (central processing units) of the host and the terminal and IO resources of INIC (input/output) chips are effectively saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of a single ring MOST network architecture in the prior art;
FIG. 2 is a diagram of a framework of a dual-ring MOST network in the prior art;
FIG. 3 is a block diagram of a multi-ring MOST network architecture in the prior art;
FIG. 4 is a flowchart illustrating the operation of the MOST network initialization in the prior art;
FIG. 5 is a flowchart illustrating the operation of the MOST network initialization of the present invention;
fig. 6 is a logic diagram of the MOST network initialization according to embodiment 1 of the present invention;
fig. 7 is a logic diagram of the MOST network initialization according to embodiment 2 of the present invention;
fig. 8 is a logic diagram of the MOST network initialization according to embodiment 3 of the present invention;
fig. 9 is a logic diagram of the MOST network initialization according to embodiment 4 of the present invention;
fig. 10 is a logic diagram of the MOST network initialization according to embodiment 5 of the present invention;
fig. 11 is a logic diagram of the MOST network initialization according to embodiment 6 of the present invention.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail below with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 5, a method for initializing MOST network includes the following steps:
step 1, automatically completing a logic process of MOST network initialization by using an INIC chip of a host and an INIC chip of a terminal through a transmission medium;
step 2, if the MOST network is initialized successfully, the INIC chip of the host computer sends an initialization success message to the host computer communication controller, so that the CPU of the host computer obtains the result of successful initialization; the INIC chip of the terminal sends a message of successful initialization to the terminal communication controller, so that the CPU of the terminal obtains the result of successful initialization;
step 3, if the MOST network initialization fails, the INIC chip of the host computer sends an initialization failure message to the host computer communication controller, so that the CPU of the host computer obtains the result of the initialization failure; and the INIC chip of the terminal sends a message of initialization failure to the terminal communication controller, so that the CPU of the terminal acquires the result of initialization failure.
Preferably, the transmission medium is optical or coaxial.
Preferably, the INIC chip is a microchip most network chip of OS81118 or OS81110 model.
Compared with the traditional MOST network initialization method, the invention uses the INIC chips of the host and the terminal to replace the CPU to complete the initialization process of the MOST network, so that the CPU only needs to wait for the initialization result, thereby greatly simplifying the work flow, effectively reducing the work load of the CPU of the host and the terminal and improving the efficiency of the MOST network initialization.
Example 1
As shown in fig. 6, a group of logic diagrams for initializing the MOST network with a single-loop structure is shown, in this embodiment, both the host communication controller and the terminal communication controller adopt mlb controllers, and when the host and the terminal are powered on, the INIC chip of the host and the INIC chip of the terminal automatically complete the logic process of initializing the MOST network through an optical fiber or coaxially: whether all nodes are a closed ring network or not and whether all nodes can obtain unique opposite numbers or not.
If the MOST network is initialized successfully, the INIC chip of the host computer sends an initialization success message to the mlb controller in the host computer, so that the CPU of the host computer obtains the result of successful initialization; the INIC chip of the terminal sends a message of successful initialization to the mlb controller in the terminal, so that the CPU of the terminal acquires the result of successful initialization;
if the initialization of the MOST network fails, an INIC chip of the host sends an initialization failure message to an mlb controller in the host, so that a CPU of the host acquires the result of the initialization failure; and the INIC chip of the terminal sends a message of initialization failure to the mlb controller in the terminal, so that the CPU of the terminal acquires the result of the initialization failure.
Because the I2c controller is mainly used to consume IO resources of the pins of the CPU and the INIC chip, a large amount of resources of the CPU and the INIC chip are occupied in the traditional MOST network initialization process, and the I2c controller is avoided by adopting the mlb controller to send the initialization result to the CPU, so the IO resources of the CPU and the INIC chip can be greatly saved, and the workload of the CPU and the INIC chip is further reduced.
Example 2
As shown in fig. 7, another MOST network initialization logic diagram of a single-ring structure is shown, which is different from embodiment 1 in that the host communication controller in this embodiment adopts an mlb controller, and the terminal communication controller adopts a usb controller, and other working steps are the same as those in embodiment 1, and are not described again here.
In this embodiment, the USB controller is a general-purpose bus of the computer, supports bidirectional transmission, and can transmit the initialization result to the CPU as with the mlb controller, thereby achieving the same effect as in embodiment 1, greatly saving IO resources of the CPU and the INIC chip, and further reducing workload of the CPU and the INIC chip.
Example 3
As shown in fig. 8, another group of MOST network initialization logic diagram with a single-ring structure is shown, which is different from embodiment 1 in that the host communication controller in this embodiment adopts a usb controller, and the terminal communication controller adopts an mlb controller, and other working steps are the same as those in embodiment 1, and are not described herein again.
In this embodiment, the effect of embodiment 1 is also achieved, IO resources of the CPU and the INIC chip are saved, and the workload of the CPU and the INIC chip is reduced.
Example 4
As shown in fig. 9, another MOST network initialization logic diagram of a single-ring structure is shown, which is different from embodiment 1 in that a usb controller is used for both the host communication controller and the terminal communication controller in this embodiment, and other working steps are the same as those in embodiment 1, and are not described here again.
Similarly, in this embodiment, the effect of embodiment 1 is also achieved, IO resources of the CPU and the INIC chip are saved, and the workload of the CPU and the INIC chip is reduced.
Example 5
As shown in fig. 10, a group of MOST network initialization logic diagrams in a dual-ring structure is shown, and unlike embodiment 1, the host in this embodiment supports two MOST network rings, each of which may be in any one of the single-ring structures of embodiments 1, 2, 3, and 4, that is, the mlb controller or the usb controller may be used as both the host communication controller and the terminal communication controller.
In this embodiment, each MOST network ring adopts mlb controller or usb controller to replace i2c controller, so as to implement the function of sending the initialization result to the CPU, greatly save IO resources of the CPU and the INIC chip, reduce the workload of the CPU and the INIC chip, and improve the efficiency of dual-ring MOST network initialization.
Example 6
As shown in fig. 11, a group of MOST network initialization logic diagrams of multi-loop structure is shown, different from embodiment 1, the host in this embodiment supports three or more MOST network loops, where the number of MOST network loops is equal to the sum of the numbers of mlb controllers and usb controllers in the host, and each MOST network loop may be in any one of the single-loop structures of embodiment 1, embodiment 2, embodiment 3, and embodiment 4, that is, the mlb controller or usb controller may be used as both the host communication controller and the terminal communication controller.
In this embodiment, the initialization process of each MOST network ring is optimized, so that particularly when the number of MOST network rings is large, the overall initialization efficiency can be greatly improved, and a large amount of IO resources of the CPU and the INIC chip are saved.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A method for initializing MOST networks, comprising the steps of:
step 1, automatically completing a logic process of MOST network initialization by using an INIC chip of a host and an INIC chip of a terminal through a transmission medium;
step 2, if the MOST network is initialized successfully, the INIC chip of the host computer sends an initialization success message to the host computer communication controller, so that the CPU of the host computer obtains the result of successful initialization; the INIC chip of the terminal sends a message of successful initialization to the terminal communication controller, so that the CPU of the terminal obtains the result of successful initialization;
step 3, if the MOST network initialization fails, the INIC chip of the host computer sends an initialization failure message to the host computer communication controller, so that the CPU of the host computer obtains the result of the initialization failure; and the INIC chip of the terminal sends a message of initialization failure to the terminal communication controller, so that the CPU of the terminal acquires the result of initialization failure.
2. The method for MOST network initialization of claim 1, wherein: and the terminal communication controller is a terminal mlb controller or a terminal usb controller.
3. The method for MOST network initialization of claim 1, wherein: the host communication controller is a host mlb controller or a host usb controller.
4. A method of MOST network initialization as claimed in claim 3 wherein: the host supports at least one MOST network ring.
5. A method of MOST network initialization according to claim 4, characterized in that: the number of MOST network rings is equal to the sum of the number of host mlb controllers and host usb controllers in the host.
6. The method for MOST network initialization of claim 1, wherein: the transmission medium is light or coaxial.
7. The method for MOST network initialization of claim 1, wherein: the INIC chip is a microchip most network chip of an OS81118 or OS81110 model.
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| CN117240653A (en) * | 2023-09-09 | 2023-12-15 | 东莞市鸿泰信息科技有限公司 | Single-host multi-ring MOST network structure and initialization method thereof |
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