CN114301936A - Remote memory access method and system - Google Patents

Abstract

The present application relates to a remote memory access method, system, smart device and storage medium. The method includes: after receiving the trigger instruction from the server, the peripheral management module encapsulates the access operation, the access address and the first data into a first UDP network data packet according to the access operation, and then encapsulates the first UDP network data packet. sent to the sensing node corresponding to the access port; the sensing node decapsulates the received first UDP network data packet, obtains the access operation, the access address and the first data according to the decapsulation, and decapsulates the received first UDP network data packet. The sensing node or the peripheral module connected to the sensing node performs the access operation. In the present invention, based on the memory mapping of the peripheral management module, the server can perform register-level access to the sensing node and the peripheral module. It realizes friendly access to the hardware remotely, and can complete the equipment diagnosis and data collection of the Internet of Things system, without the need for a huge operating system as a support, and the cost is low.

Description

Remote memory access method and system

technical field

The present application relates to the field of computer technology, and in particular, to a remote memory access method and system.

Background technique

Narrow Band Internet of Things (NB-IoT) and LTE-based Internet of Things (LTE enhanced MTO, eMTC) are both currently inexpensive wireless interconnection solutions for the Internet of Things, but both are meeting the needs of large-scale data. And flexible remote access hardware is still lacking, to achieve the same function, need to pay a higher price. There are two reasons. First, reliable network transmission requires the support of the operating system. The system is huge and expensive, which is not conducive to expansion, especially for distributed data collection, which limits its large-scale application; second, it is impossible to remotely perform hardware operations. Friendly access, especially register-level access, is very important for fault diagnosis and information collection of access objects.

To sum up, there is an urgent need for a remote memory access method without the support of a huge operating system.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a remote memory access method and a smart device that do not require the support of a huge operating system to address the above technical problems.

In a first aspect, a remote memory access method is provided, the method comprising:

After receiving the trigger instruction of the server, the peripheral management module encapsulates the access operation, the access address and the first data stored in the first memory into a first UDP network data packet according to the access operation, and the first UDP sending the network data packet to the sensing node corresponding to the access port;

The sensor node decapsulates the received first UDP network data packet, and according to the access operation, the access address and the first data obtained from the decapsulation, connects the sensor node or the sensor node. The peripheral module performs the access operation.

In one embodiment, the method further includes:

The sensing node encapsulates the reply data after completing the access operation into a second UDP network data packet, and sends the second UDP network data packet to the peripheral device management module;

The peripheral device management module decapsulates the second UDP network data packet, and stores the reply data in the second memory if the reply data is not only a communication response.

In one of the embodiments, the operation on the sensing node or the peripheral module connected with the sensing node is as follows:

The sensing node determines whether it is directly accessing the sensing node according to the access operation, and if it directly accesses the sensing node, executes the access operation on the sensing node; sensor node, after performing the access operation on the peripheral module through the low-speed serial bus mapped by the local register of the sensor node, the result of the access is stored in the local register, so that the peripheral device management module can view and operate the peripheral module the result of.

In a second aspect, a remote memory access system is provided, the system includes: a host, a sensor node and a peripheral module, the host includes a server and a peripheral management module, the peripheral management module and the transmission module The sensing nodes communicate through the network, and the sensing nodes interact with the peripheral modules through a low-speed serial bus, wherein,

The peripheral management module is configured to encapsulate the access operation, the access address and the first data stored on the first memory into a first UDP network data packet according to the access operation after receiving the trigger instruction of the server, and then The first UDP network data packet is sent to the sensing node corresponding to the access port;

The sensing node is configured to decapsulate the received first UDP network data packet, and according to the access operation, the access address and the first data obtained from the decapsulation, decapsulate the sensing node or communicate with the transmission. The peripheral module connected to the sense node performs the access operation.

In one embodiment, the server and the peripheral device management module are connected through a PCI bus.

In one embodiment, the peripheral device management module and the sensor node perform UDP communication in a question-and-answer mode.

In one of the embodiments, the access operation includes any one or multiple combinations of read or write, direct addressing or indirect addressing, and communication requests.

In one of the embodiments, the peripheral management module further includes at least one second memory,

The sensing node is further configured to encapsulate the reply data after completing the access operation into a second UDP network data packet, and send the second UDP network data packet to the peripheral device management module;

The peripheral device management module is further configured to decapsulate the second UDP network data packet, and if the reply data is not only a communication response, the reply data is stored in the second memory.

In one embodiment, the sensing node is specifically configured to determine whether the sensing node is directly accessed according to the access operation, and if the sensing node is directly accessed, execute the sensing node on the sensing node. access operation; if the sensor node is not directly accessed, after the access operation is performed to the peripheral module through the low-speed serial bus mapped by the local register of the sensor node, the access result is stored in the local register to Enables the peripheral management module to view the results of operating peripheral modules.

In one embodiment, the system is an IoT device diagnosis system and/or an IoT data acquisition system.

The above-mentioned remote memory access method and intelligent device, after receiving the trigger instruction of the server through the peripheral management module, the access operation, the access address and the first data are encapsulated into a first UDP network data packet according to the access operation, and the first UDP network data packet is encapsulated. A UDP network data packet is sent to the sensor node corresponding to the access port; the sensor node decapsulates the received first UDP network data packet, and obtains the access operation, the access address and the first data according to the decapsulation , perform the access operation on the sensing node or the peripheral module connected to the sensing node. In the present invention, based on the memory mapping of the peripheral management module, the server can register the sensing node and the peripheral module. Level access realizes remote friendly access to hardware, and can complete equipment diagnosis and data collection of the Internet of Things system, without the need for a huge operating system as a support, and the cost is low.

Description of drawings

1 is a structural block diagram of a remote memory access system in one embodiment;

FIG. 2 is a schematic flowchart of a remote memory access method in one embodiment.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

In one embodiment, as shown in FIG. 1 , a remote memory access system is provided. The system can be used in a specific scenario of IoT device diagnosis or data collection. The system includes: a host 1 , a sensor node 2 and Peripheral module 3. The host 1 includes a server 11 and a peripheral management module 12, the server 11 and the peripheral management module 12 are connected through a PCI (Peripheral Component Interconnect) bus, and the peripheral management module 12 includes at least one first memory and at least one second memory, the first memory is used to store the access operation, access address and first data of the sensor node by the server 11, and the second memory is used to store the received reply data of the sensor node 2, the The server 11 reads and writes the first memory and the second memory through a 32-bit address data bus, and the peripheral management module 12 communicates with the sensing node 2 through a network. The network is an Ethernet UDP protocol. The peripheral management module 12 is connected to one or more of the sensing nodes 2 through an address bus. The peripheral management module 12 and the sensing node 2 conduct UDP communication through a question-and-answer mode, and the sensing node 2 communicates with the sensing node 2. The peripheral module 3 interacts through a low-speed serial bus, and the low-speed serial bus includes an I2C bus (INTER IC BUS, I2C), a Universal Asynchronous Receiver Transmitter (UART), a Serial Peripheral Interface (Serial Peripheral Interface) , SPI) any one or more combinations, wherein:

The peripheral management module 12 stores the operation instruction received from the server 11 in a register or a first memory, and the operation instruction includes an access operation, an access address and first data.

The peripheral management module 12 is used to encapsulate the access operation, the access address and the first data stored on the first memory into the first UDP network data according to the access operation after receiving the trigger instruction of the server 11 packet, send the first UDP network data packet to the sensing node 2 corresponding to the access port; the access operation includes any one or more combinations of read or write, direct addressing or indirect addressing, and communication requests, The same data packet includes one of read or write, the same data packet includes one of direct addressing or indirect addressing, and the same data packet includes a communication request. The trigger instruction is an instruction used by the server to trigger the peripheral device management module to start remote access. The access address is a mapping register address corresponding to the sensor node to be accessed; the access port is a port for the sensor node to receive network commands. The first data is the data sent by the server to the sensor node to be accessed or the register or memory of the sensor node to be accessed connected to the peripheral module.

The sensing node 2 is used to decapsulate the received first UDP network data packet, and according to the access operation, the access address and the first data obtained from the decapsulation, the sensing node 2 or the related The peripheral module 3 connected to the sensing node 2 operates.

The sensing node 2 is specifically configured to determine whether the sensing node 2 is directly accessed according to the access operation, and if the sensing node 2 is directly accessed, execute the access to the sensing node 2 operation; if the sensor node 2 is not directly accessed, it is an indirect access, that is, after the operation of the local register of the sensor node 2 is mapped into a low-speed serial bus to perform an access operation on the peripheral module 3, the result of the access is Stored in a local register to allow the peripheral management module to view the results of operating the peripheral module.

One peripheral management module 12 can be connected to one or more sensor nodes 2 correspondingly. The communication between the peripheral management module 12 and different sensing nodes 2 is distinguished according to different access ports, so that one host 1 can correspond to multiple sensing nodes 2 . The peripheral management module 12 sends a read/write request command, then the sensor node 2 corresponding to the access port will immediately return a reply command, and each request command and the reply command are in one-to-one correspondence, so that the UDP of this embodiment Network protocol transmission is more reliable, and access to sensor nodes or peripheral modules connected to the sensor nodes is completed.

In another embodiment of the present invention, the peripheral device management module 12 further includes at least one second memory, wherein the sensing node 2 is further configured to encapsulate the reply data after completing the access operation as a second memory UDP network data packet, sending the second UDP network data packet to the peripheral management module 12; the reply data is the execution result of the visited sensor node or the corresponding peripheral module obtained with the visited sensor node data.

The peripheral device management module 12 is further configured to decapsulate the UDP network data packet, and store the reply data in the second memory if the reply data is not only a communication response.

In the above-mentioned remote memory access system, based on the memory mapping of the peripheral management module, the server can perform register-level access to the sensor node and peripheral module, which realizes remote friendly access to the hardware, and can complete the device diagnosis of the Internet of Things system. And data acquisition, no need for a huge operating system as a support, low cost.

In one embodiment, as shown in FIG. 2, a remote memory access method is provided, and the method is applied to a remote memory access system as an example for description, including the following steps:

Step S21, after receiving the trigger instruction from the server, the peripheral management module encapsulates the access operation, the access address and the first data into a first UDP network data packet according to the access operation, and sends the first UDP network data packet to Access the sensor node corresponding to the port. The access operation includes any one or a combination of reading or writing, direct addressing or indirect addressing, and communication requests.

Step S22, the sensing node decapsulates the received first UDP network data packet, and obtains the access operation, the access address and the first data according to the decapsulation, and decapsulates the sensing node or the communication with the transmission. The peripheral module connected to the sense node performs the access operation.

Specifically, the operation on the sensing node or the peripheral module connected with the sensing node is as follows:

The sensing node determines whether it is directly accessing the sensing node according to the access operation, and if it directly accesses the sensing node, executes the access operation on the sensing node; sensor node, after performing the access operation on the peripheral module through the low-speed serial bus mapped by the local register of the sensor node, the result of the access is stored in the local register, so that the peripheral device management module can view and operate the peripheral module the result of.

In the above-mentioned remote memory access method, after receiving the trigger instruction of the server through the peripheral management module, the access operation, the access address and the first data are encapsulated into a first UDP network data packet according to the access operation, and the first UDP network data packet is encapsulated. The network data packet is sent to the sensor node corresponding to the access port; the sensor node decapsulates the received first UDP network data packet, and obtains the access operation, the access address and the first data according to the decapsulation , perform the access operation on the sensing node or the peripheral module connected to the sensing node. In the present invention, based on the memory mapping of the peripheral management module, the server can register the sensing node and the peripheral module. Level access realizes remote friendly access to hardware, and can complete equipment diagnosis and data collection of the Internet of Things system, without the need for a huge operating system as a support, and the cost is low.

In another embodiment of the present invention, a remote memory access method is provided, wherein the peripheral device management module further includes at least one second memory, including the following steps:

Step S23, the sensor node encapsulates the reply data after completing the access operation into a second UDP network data packet, and sends the second UDP network data packet to the peripheral device management module;

Step S24, the peripheral device management module decapsulates the second UDP network data packet, and if the reply data is not only a communication response, then stores the reply data in the second memory;

It should be understood that although the various steps in the flowchart of FIG. 2 are shown in sequence according to the arrows, these steps are not necessarily executed in the sequence shown by the arrows. Unless explicitly stated herein, the execution of these steps is not strictly limited to the order, and these steps may be performed in other orders. Moreover, at least a part of the steps in FIG. 2 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed and completed at the same time, but may be executed at different times. The execution of these sub-steps or stages The sequence is also not necessarily sequential, but may be performed alternately or alternately with other steps or sub-steps of other steps or at least a portion of a phase.

The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It is considered to be the range described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

1. a remote memory access method, is characterized in that, described method comprises: After receiving the trigger instruction of the server, the peripheral management module encapsulates the access operation, the access address and the first data stored in the first memory into a first UDP network data packet according to the access operation, and the first UDP The network data packet is sent to the sensor node corresponding to the access port; The sensor node decapsulates the received first UDP network data packet, and according to the access operation, the access address and the first data obtained from the decapsulation, connects the sensor node or the sensor node. The peripheral module performs the access operation. 2. The remote memory access method according to claim 1, wherein the method further comprises: The sensing node encapsulates the reply data after completing the access operation into a second UDP network data packet, and sends the second UDP network data packet to the peripheral device management module; The peripheral device management module decapsulates the second UDP network data packet, and stores the reply data in the second memory if the reply data is not only a communication response. 3. The remote memory access method according to claim 1, wherein the operation on the sensing node or a peripheral module connected with the sensing node is as follows: The sensing node determines whether it is directly accessing the sensing node according to the access operation, and if it directly accesses the sensing node, executes the access operation on the sensing node; sensor node, after performing the access operation on the peripheral module through the low-speed serial bus mapped by the local register of the sensor node, the result of the access is stored in the local register, so that the peripheral device management module can view and operate the peripheral module the result of. 4. A remote memory access system, characterized in that the system comprises: a host, a sensing node and a peripheral module, the host comprises a server and a peripheral management module, the peripheral management module and the transmission The sensing nodes communicate through the network, and the sensing nodes interact with the peripheral modules through a low-speed serial bus, wherein, The peripheral management module is configured to encapsulate the access operation, the access address and the first data stored on the first memory into a first UDP network data packet according to the access operation after receiving the trigger instruction of the server, and then The first UDP network data packet is sent to the sensing node corresponding to the access port; The sensing node is configured to decapsulate the received first UDP network data packet, and according to the access operation, the access address and the first data obtained from the decapsulation, decapsulate the sensing node or communicate with the transmission. The peripheral module connected to the sense node performs the access operation. 5 . The remote memory access system according to claim 4 , wherein the server and the peripheral management module are connected through a PCI bus. 6 . 6 . The remote memory access system according to claim 4 , wherein the peripheral device management module and the sensing node perform UDP communication through a question-and-answer mode. 7 . 7. The remote memory access system according to claim 4, wherein the access operation comprises any one or a combination of read or write, direct addressing or indirect addressing, and communication request. 8. The remote memory access system according to claim 4, wherein the peripheral device management module further comprises at least one second memory, The sensing node is further configured to encapsulate the reply data after completing the access operation into a second UDP network data packet, and send the second UDP network data packet to the peripheral device management module; The peripheral device management module is further configured to decapsulate the second UDP network data packet, and if the reply data is not only a communication response, the reply data is stored in the second memory. 9 . The remote memory access system according to claim 4 , wherein the sensing node is specifically configured to determine whether the sensing node is directly accessed according to the access operation, and if the sensing node is directly accessed. 10 . , then perform the access operation on the sensing node; if the sensing node is not directly accessed, after performing the access operation on the peripheral module through the low-speed serial bus mapped by the local register of the sensing node, The result of the access is stored in the local register, so that the peripheral management module can view the result of operating the peripheral module. 10 . The remote memory access system according to claim 4 , wherein the system is an IoT device diagnosis system and/or an IoT data acquisition system. 11 .

Images