Multi-slave control system, method and device, program product and storage medium

Abstract

The invention discloses a multi-slave control system, method and equipment, a program product and a storage medium, belongs to the field of integrated circuit buses, is used for realizing multi-slave control of an integrated circuit bus through a simple structure, and solves the problems of large circuit size and high cost of a multi-slave control scheme. The multi-slave control system is composed of a central processing unit and a multi-slave controller, and the multi-slave controller can control the target device address in the data control command sent by the host device of the integrated circuit bus under the condition that the target device address in the data control command sent by the host device of the integrated circuit bus exists in the preset device address pool. The central processing unit is triggered to realize data interaction between the host equipment and the target external equipment through the multi-slave controller, whether the target external equipment exists or not can be efficiently identified through maintenance of the equipment address pool, the structure is relatively simple, and reduction of the circuit size and cost is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of integrated circuit buses, and particularly to a multi-slave control system, method, device, program product, and storage medium. Background Art

[0002] Some IIC (Inter-Integrated Circuit) hosts have a small number of IIC interfaces, for example, only one. In this case, the IIC host may have a need to "access multiple external devices through a single IIC interface". However, in the related art, there is a lack of a mature multi-slave control scheme, and when implementing "accessing multiple external devices through a single IIC interface", there are problems of large circuit volume and high cost.

[0003] Therefore, how to provide a solution to the above technical problems is an issue that those skilled in the art need to solve currently. Summary of the Invention

[0004] The object of the present invention is to provide a multi-slave control system, method, device, program product, and storage medium. The multi-slave control system in the present invention consists of a central processor and a multi-slave controller. The multi-slave controller can trigger the central processor to implement data interaction between the host device and the target external device through the multi-slave controller when the target device address in the data control command sent by the host device of the integrated circuit bus exists in the preset device address pool. By maintaining the device address pool, it is possible to efficiently identify whether there is a target external device, and the structure is relatively simple, which is beneficial to reducing the circuit volume and cost.

[0005] To solve the above technical problems, the present invention provides a multi-slave control system, including: a central processor connected to multiple external devices, configured to, after being triggered by the multi-slave controller, implement data interaction between the host device and the target external device through the multi-slave controller according to the data interaction type specified by the read / write flag bit in the data control command; a multi-slave controller respectively connected to the central processor and the host device of the integrated circuit bus, configured to determine whether the target device address in the data control command sent by the host device of the integrated circuit bus exists in the preset device address pool; if it exists, trigger the central processor; where the device address pool includes the device addresses of each external device communicatively connected to the central processor, the data interaction type includes read or write, and the target external device is: the external device with the device address being the target device address.

[0006] On the other hand, the multi-slave controller includes a control device, a data interface module, a data buffer module, and an address pool module; the data interface module is respectively connected to the host device of the integrated circuit bus, the control device, and the address pool module, and the data buffer module is respectively connected to the control device and the central processing unit; the data interface module is used to respectively implement data transmission between the address pool module and the control device and the host device; the address pool module is used to determine whether the target device address exists in the preset device address pool and give a judgment result after receiving the target device address in the data control command sent by the host device through the data interface module; the control device is used to trigger the central processing unit when the judgment result is yes; the data buffer module is used to implement read / write data buffering between the host device and the target device connected to the central processing unit.

[0007] On the other hand, the address pool module includes a multi-bit register and a multi-level selection module; the number of bits of the multi-bit register is: the total number of device addresses supported by the number of bits of the addressing mode, and the number of levels of the selector of the multi-level selection module is equal to the number of bits of the addressing mode; the multi-level selection module is used to input the values of each bit order in the binary target device address as control signals to the control terminals of each selector in the level corresponding to the bit order one by one in the multi-level selection module, so that the multi-level selection module outputs the register value of the register bit corresponding to the target device address; wherein, when the register value output by the multi-level selection module is a preset valid value, it means that the target device address exists in the preset device address pool.

[0008] On the other hand, the number of selectors in each level of the multi-level selection module is: X / 2 n ; The input terminals of any selector in the first level are correspondingly connected to one bit of the multi-bit register, the output terminals of each selector in the previous level are correspondingly connected to the input terminals of each selector in the next level, and the output terminal of the selector in the nth level is used as the output terminal of the multi-level selection module; wherein, X is the number of bits of the multi-bit register, and n is the level serial number.

[0009] On the other hand, the host device includes the host of the server.

[0010] On the other hand, the central processing unit includes the central processing unit of the baseboard management controller of the server; the multi-slave controller is integrated in the baseboard management controller.

[0011] On the other hand, the data interface module includes a data sampling and transmission module, an address shift register, and a data shift register; the data sampling and transmission module is configured to convert the serial data sent by the host device into parallel data, and under the control of the control device, convert the device address in the address shift register and the data in the data shift register into serial data and then send them to the host device; the address shift register is configured to store the target device address sent by the host device under the control of the data sampling and transmission module, and is also configured to store the device address sent by the control device under the control of the control device; the data shift register is configured to store the data sent by the host device under the control of the data sampling and transmission module, and is also configured to store the data sent by the control device under the control of the control device.

[0012] On the other hand, the control device includes a control module, an interrupt generation module, a response processing module, and a register module; the control module is configured to, when the judgment result is yes, control the response processing module to send an acknowledgment signal to the host device, store the target device address in the register module, and control the interrupt generation module to send an interrupt to the central processing unit, so as to trigger the central processing unit to obtain the target device address from the register module and communicate with the target external device.

[0013] On the other hand, the register module is further configured to: save the configuration parameters of the addressing mode under the control of the central processing unit, so as to adjust the addressing mode used by the control device.

[0014] On the other hand, the data buffer module includes a bus data parsing module, a write data buffer, and a read data buffer; the bus data parsing module is configured to parse the data sent by the central processing unit through the control bus, store the parsed data in the write data buffer, and is also configured to send the data in the read data buffer to the control bus of the central processing unit; the control device is further configured to send the data in the write data buffer to the host device through the data interface module, and write the data sent by the host device into the read data buffer.

[0015] On the other hand, the central processing unit is further configured to: in response to a configuration instruction, modify the device addresses available in the device address pool.

[0016] To solve the above technical problems, the present invention also provides a multi-slave control method, which is applied to a multi-slave control device and includes: obtaining the target device address in the data control command sent by the host device of the integrated circuit bus; determining whether the target device address exists in the preset device address pool, where the device address pool includes the device addresses of each external device communicatively connected to the multi-slave control device; if it exists, performing data interaction with the target external device according to the data interaction type specified by the read / write flag bit in the data control command, where the data interaction type includes read or write, and the target external device is the external device with the device address being the target device address.

[0017] To solve the above technical problems, the present invention also provides a multi-slave control device, including: a memory for storing a computer program; a processor for implementing the steps of the above multi-slave control method when executing the computer program.

[0018] To solve the above technical problems, the present invention also provides a computer program product, including computer program / instructions, and when the computer program / instructions are executed by a processor, the steps of the above multi-slave control method are implemented.

[0019] To solve the above technical problems, the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above multi-slave control method are implemented.

[0020] Beneficial effects: The present invention provides a multi-slave control system. Considering that more external devices can be connected through the interface of an additional central processing unit, and the device address pool of the connected external devices is maintained to efficiently identify whether there is a target external device, the multi-slave control system in the present invention consists of a central processing unit and a multi-slave controller. The multi-slave controller can trigger the central processing unit to implement data interaction between the host device and the target external device when the target device address in the data control command sent by the host device of the integrated circuit bus exists in the preset device address pool. By maintaining the device address pool, it can be efficiently identified whether there is a target external device. The structure is relatively simple, which is beneficial to reducing the circuit volume and cost.

[0021] The present invention also provides a multi-slave control method, device, equipment and computer-readable storage medium, which have the same beneficial effects as the above multi-slave control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the attached drawings required in the related technologies and embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these attached drawings.

[0023] Figure 1 It is a schematic structural diagram of a multi-slave machine control system provided by the present invention.

[0024] Figure 2 It is a schematic structural diagram of an address pool module provided by the present invention.

[0025] Figure 3 It is a schematic structural diagram of another multi-slave machine control system provided by the present invention.

[0026] Figure 4 It is a schematic flow diagram of the first multi-slave machine control method provided by the present invention.

[0027] Figure 5 It is a schematic flow diagram of the state machine jump of a control module provided by the present invention.

[0028] Figure 6 It is a schematic flow diagram of the second multi-slave machine control method provided by the present invention.

[0029] Figure 7 It is a schematic structural diagram of a multi-slave machine control device provided by the present invention.

[0030] Figure 8 It is a schematic structural diagram of a computer-readable storage medium provided by the present invention. Specific embodiments

[0031] The core of the present invention is to provide a multi-slave machine control system, method, device, program product and storage medium. The multi-slave machine control system in the present invention consists of a central processor and a multi-slave machine controller. When the multi-slave machine controller can trigger the central processor to realize data interaction between the host device and the target external device through the multi-slave machine controller in the case of the target device address in the data control command sent by the host device existing in the preset device address pool, the target external device can be efficiently identified through the maintenance of the device address pool, and the structure is relatively simple, which is beneficial to reducing the circuit volume and cost.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a multi-slave machine control system provided by the present invention. The multi-slave machine control system includes: a central processor 1 connected to a plurality of external devices, which is configured to, after being triggered by a multi-slave machine controller 2, according to the data interaction type specified by the read / write flag bit in the data control command, implement data interaction between the host device and the target external device through the multi-slave machine controller 2; a multi-slave machine controller 2 respectively connected to the central processor 1 and the host device of the integrated circuit bus, which is configured to determine whether a target device address in the data control command sent by the host device of the integrated circuit bus exists in a preset device address pool; if it exists, trigger the central processor 1; wherein, the device address pool includes the device addresses of each external device communicatively connected to the central processor 1, the data interaction type includes read or write, and the target external device is: the external device whose device address is the target device address.

[0034] Specifically, considering the technical problems in the above background art, and also considering that more external devices can be connected through the interface of another central processor 1, and the target external device can be efficiently identified by maintaining the device address pool of the connected external devices. Therefore, in the embodiments of the present invention, it is desired to realize the mounting and connection of more external devices through the interface of another central processor 1, and the multi-slave machine controller 2 independent of the central processor 1 is used to determine whether there is a target external device accessed by the "host device of the integrated circuit bus" among the external devices connected to the central processor 1. If it exists, the data interaction processing action of the central processor 1 can be triggered, so as to realize the multi-slave machine control of the integrated circuit bus (IIC) through the simple structure of the central processor 1 and the multi-slave machine controller 2, which is beneficial to reducing the circuit volume and cost.

[0035] Specifically, the device addresses in the preset device address pool are actually equivalent to the device addresses of the respective external devices connected to the central processing unit 1. Therefore, it can be determined whether the target device address in the data control command sent by the host device of the integrated circuit bus exists in the preset device address pool. If it exists, it can be considered that there is a target external device among the external devices connected to the central processing unit 1 (i.e., the external device with the device address being the target device address); if it does not exist, it can be considered that there is no target external device among the external devices connected to the central processing unit 1.

[0036] Among them, after being triggered, the central processing unit 1 can, according to the data control instruction, perform corresponding type of data interaction processing between the host device and the target external device through the multi-slave controller 2. For example, write the data to be written of the host device into the target external device, or read the data of the target external device to the host device.

[0037] Specifically, the central processing unit 1 can modify the device address pool through the control bus. For example, in the initialization stage, the device addresses of the respective external devices connected to the central processing unit 1 can be stored in the device address pool to facilitate the subsequent judgment work of the multi-slave controller 2.

[0038] Among them, the control bus can be of various types. For example, it can be an APB (Advanced Peripheral Bus) bus, etc. The embodiments of the present invention do not make limitations here.

[0039] Among them, the external devices connected to the central processing unit 1 can be of various types and can be flexibly set according to the structure of the central processing unit 1. For example, they can be IIC bus devices or other types of devices, etc. The embodiments of the present invention do not make limitations here.

[0040] The present invention provides a multi-slave control system. Considering that more external devices can be connected through the interface of another central processing unit, and whether there is a target external device can be efficiently identified by maintaining the device address pool of the connected external devices. Therefore, the multi-slave control system in the present invention is composed of a central processing unit and a multi-slave controller. The multi-slave controller can trigger the central processing unit to implement data interaction between the host device and the target external device through the multi-slave controller when the target device address in the data control command sent by the host device of the integrated circuit bus exists in the preset device address pool. By maintaining the device address pool, whether there is a target external device can be efficiently identified, and the structure is relatively simple, which is beneficial to reducing the circuit volume and cost.

[0041] Based on the above embodiments: As an alternative embodiment, the multi-slave controller 2 includes a control device, a data interface module, a data buffer module, and an address pool module; the data interface module is respectively connected to the host device of the integrated circuit bus, the control device, and the address pool module, and the data buffer module is respectively connected to the control device and the central processor 1; the data interface module is used to respectively implement data transmission between the address pool module and the control device and the host device; the address pool module is used to determine whether the target device address exists in the preset device address pool and give a judgment result after receiving the target device address in the data control command sent by the host device through the data interface module; the control device is used to trigger the central processor 1 when the judgment result is yes; the data buffer module is used to implement read / write data buffering between the host device and the target device connected to the central processor 1.

[0042] Specifically, considering that the multi-slave controller 2 needs to coordinate the core control part of the overall situation, the part responsible for the communication between the host device and the multi-slave controller 2, the part responsible for the communication between the central processor 1 and the multi-slave controller 2, and the address pool for storing device addresses, the multi-slave controller 2 in the embodiment of the present invention includes a control device, a data interface module, a data buffer module, and an address pool module. The control device can be used as the core control part of the multi-slave controller 2, the data interface module can be responsible for the communication between the host device and the multi-slave controller 2, the data buffer module can be responsible for the communication between the central processor 1 and the multi-slave controller 2, and the address pool module can store the address pool of device addresses.

[0043] Among them, in order to reduce the burden of the control device, the address pool module can independently determine whether the target device address exists in the preset device address pool and give a judgment result after receiving the target device address in the data control command sent by the host device through the data interface module, which is beneficial to reducing the volume and cost of the control device.

[0044] As an alternative embodiment, the address pool module includes a multi-bit register and a multi-level selection module; the number of bits of the multi-bit register is: the total number of device addresses supported by the number of bits of the addressing mode, and the number of levels of the selector of the multi-level selection module is equal to the number of bits of the addressing mode; the multi-level selection module is used to input the values of each bit order in the binary target device address as control signals to the control ends of the selectors in each level corresponding to the bit order in the multi-level selection module, so that the multi-level selection module outputs the register value of the register bit corresponding to the target device address; among them, when the register value output by the multi-level selection module is a preset valid value, it means that the target device address exists in the preset device address pool.

[0045] Specifically, considering that on the basis of establishing the "corresponding relationship between each register bit in the multi-bit register and the device address", the value of a single register bit in the multi-bit register can represent "whether the central processor 1 is connected to the device address corresponding to this register bit". Specifically, the preset valid value can be used to represent that "the central processor 1 is connected to the device address corresponding to this register bit". Therefore, on the one hand, in the embodiment of the present invention, the "device address pool" can be maintained through the multi-bit register. On the other hand, considering that the binary target device address is directly used as the control signal of the multi-level selection module, the "register value of the register bit corresponding to the target device address" can be selected and output through the multi-level selection module, so as to implement the judgment through the register value. Therefore, in the embodiment of the present invention, a multi-level selection module is provided. The multi-level selection module can select and output the "register value of the register bit corresponding to the target device address" from the multi-bit register under the control of the binary target device address.

[0046] Among them, the preset valid value can be set independently. For example, it can be 1, etc. The embodiment of the present invention does not make any limitations here.

[0047] Specifically, to better illustrate the embodiment of the present invention, please refer to Figure 2 , Figure 2 which is a schematic structural diagram of an address pool module provided by the present invention. When the addressing mode is a 7-bit addressing mode, the number of bits of the multi-bit register can be 128 bits (0 to 127). The multi-level selection module has 7 levels of selectors ( Figure 2 The trapezoidal devices in are all selectors). The numerical bit order in the binary target device address is A0 - A6 in ascending order, a total of seven. The numerical bit order in the binary target device address and the levels in the multi-level selection module can correspond one by one in ascending order, that is, the first bit order in the target device address corresponds to the selector of the first level (starting from the side close to the multi-bit register), the second bit order corresponds to the selector of the second level, and so on. The highest bit order corresponds to the selector of the highest level.

[0048] Among them, each bit in the multi-bit register represents an IIC device address. The device addresses represented by the first three register bits are 0x00 = 1, 0x01 = 0, and 0x02 = 1 respectively. 1 indicates that the address exists in the device address pool, such as device addresses 0x00 and 0x02, and 0 indicates that the address does not exist in the address pool, such as device address 0x01. If you want the device address pool to have the required addresses, you only need to set the corresponding register bit to 1. For any 7-bit IIC address A[6:0], it is used as the selection signal of the selector in the lookup table. When the selection signal of the selector is 1, the input of the upper pin is selected, otherwise the output of the lower pin is selected. The register data at the corresponding position is finally output by controlling the selector through the IIC address A. When the output is 1, it means that the current target device address exists in the device address pool, and a corresponding acknowledgment signal is generated, otherwise no corresponding acknowledgment signal is generated.

[0049] Of course, in addition to this specific form, the address pool module can also be of many other types, which are not limited in the embodiments of the present invention.

[0050] As an optional embodiment, the number of selectors in each level of the multi-level selection module is: X / 2 n ; The input end of any selector in the first level is correspondingly connected to one bit of the multi-bit register. The output ends of the selectors in the previous level are correspondingly connected to the input ends of the selectors in the next level. The output end of the selector in the nth level is used as the output end of the multi-level selection module; where X is the number of bits of the multi-bit register and n is the level serial number.

[0051] Specifically, in the embodiments of the present invention, the structure of the multi-level selection module is defined, that is, the number of selectors in each level and their connection relationships are defined. Still taking a 128-bit multi-bit register (X = 128) in a 7-bit addressing mode as an example, the number of selectors in the first level is 128 / 2 = 64, and the input end of each selector is respectively connected to one bit in the 128-bit register. The output ends of the first-level selectors are sequentially connected to the input ends of 32 selectors in the second level (128 / 2 2 ), and so on, until the 1 selector in the 7th level, and its output end is used as the output end of the multi-level selection module to output the register value corresponding to the target device address.

[0052] Specifically, the multi-level selection module in the embodiments of the present invention has the characteristics of simple structure and low cost.

[0053] Of course, in addition to this specific form, the multi-level selection module can also be of many other types, which are not limited in the embodiments of the present invention.

[0054] As an optional embodiment, the host device includes the host of the server.

[0055] Specifically, considering that the interface resources of the host of the server are relatively limited, it is of high value to apply this multi-slave control system to the host of the server. In a common server architecture, the host device is usually the host of the server. The server host communicates with the multi-slave control system in the BMC (Baseboard Management Controller) system through the IIC bus, and sends data control commands to access the external devices connected to the BMC system.

[0056] Of course, in addition to the host of the server, the host device can also be of many other types, which are not limited in the embodiments of the present invention.

[0057] As an optional embodiment, the central processing unit 1 includes the central processing unit 1 of the server's baseboard management controller; the multi-slave controller 2 is integrated in the baseboard management controller.

[0058] Specifically, considering that in a server, the CPU (Central Processing Unit, central processing unit 1) of the BMC itself has rich interfaces to connect multiple external devices, so the central processing unit 1 in the embodiments of the present invention can include the central processing unit 1 of the server's baseboard management controller. In the BMC system architecture of the server, the central processing unit 1 is the CPU inside the server baseboard management controller (BMC). The multi-slave controller 2 is integrated inside the BMC chip, and the CPU inside the BMC is responsible for operations such as the initialization configuration of the multi-slave controller 2 and writing data into the address pool. In the device initialization stage, the CPU inside the BMC writes the address pool data into the address pool module of the multi-slave controller 2 through the control bus (such as the APB bus) to implement the initialization settings of the system.

[0059] Of course, in addition to this specific form, the central processing unit 1 can also be other processors in the server, which are not limited in the embodiments of the present invention.

[0060] As an optional embodiment, the data interface module includes a data sampling and transmission module, an address shift register, and a data shift register; the data sampling and transmission module is used to convert the serial data sent by the host device into parallel data, and convert the device address in the address shift register and the data in the data shift register into serial data under the control of the control device and then send them to the host device; the address shift register is used to store the target device address sent by the host device under the control of the data sampling and transmission module, and is also used to store the device address sent by the control device under the control of the control device; the data shift register is used to store the data sent by the host device under the control of the data sampling and transmission module, and is also used to store the data sent by the control device under the control of the control device.

[0061] Specifically, for a better illustration of the embodiments of the present invention, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of another multi-slave control system provided by the present invention. After receiving the serial data sent by the host device, the data sampling and transmission module converts it into parallel data for subsequent processing. Under the control of the control device, it converts the device address in the address shift register and the data in the data shift register into serial data and then sends it back to the host device. Under the control of the data sampling and transmission module, the address shift register receives and stores the target device address sent by the host device; under the control of the control device, it can also store the device address sent by the control device. Similarly, the data shift register stores the data sent by the host device and the control device.

[0062] Specifically, through the above data interface module, the data interaction between the control device and the host device can be realized efficiently and stably.

[0063] As an optional embodiment, the control device includes a control module, an interrupt generation module, a response processing module, and a register module; the control module is used to control the response processing module to send an acknowledgment signal to the host device when the judgment result is yes, store the target device address in the register module, and control the interrupt generation module to send an interrupt to the central processor 1, so as to trigger the central processor 1 to obtain the target device address from the register module and communicate with the target external device.

[0064] Specifically, for a better illustration of the embodiments of the present invention, please refer to Figure 4 , Figure 4 which is a schematic flow diagram of the first multi-slave control method provided by the present invention, including configuring the device address pool of the external device through the central processor 1, receiving the target device address sent by the host device, judging whether the target device address is in the device address pool, if not, ending, if so, generating an acknowledgment signal to the host device, and then the multi-slave controller 2 controls the central processor 1 to read data or write data according to the read-write flag bit, and then the work of transmitting data and processing responses can be executed.

[0065] Specifically, when the control device receives the judgment result from the address pool module that the target device address exists, the control module immediately comes into play. It controls the response processing module to send an acknowledgment signal (such as an ack signal) to the host device, informing the host device that the address has been recognized; at the same time, it stores the target device address in the register module and controls the interrupt generation module to send an interrupt signal to the central processor 1. After receiving the interrupt signal, the central processor 1 reads the target device address from the register module and then conducts data communication with the target external device.

[0066] Specifically, the control device in the above form can efficiently and accurately implement the process from judgment result recognition to response signal sending and interruption of sending.

[0067] Of course, in addition to this specific form, the control device can also be in other forms, which are not limited in the embodiments of the present invention.

[0068] Specifically, to better illustrate the embodiments of the present invention, please refer to Figure 5 , Figure 5 FIG. is a schematic flowchart of the state machine jump of a control module provided by the present invention. The system is initially in the idle state. When a start signal is detected, the state jump starts, and then the IIC address is listened to. The 7-bit address (target device address) of the IIC is stored in the shift register through the shift register, and then the value in the shift register is input to the address pool module to determine whether the address exists in the device address pool. If it exists, an ack response is generated and the transmission state is entered; then, according to the read / write flag signal bit incoming on the IIC bus, the state machine jumps to the read data state or the write data state. In the read and write data states, the central processing unit 1 needs to cooperate to complete the process of reading and writing data. When the host device of the IIC reads data, it first sends a read data control command. After the multi-slave controller 2 receives the read data control command, it generates a data interrupt to the central processing unit 1. The central processing unit 1 parses the read data control command and writes the data to be transmitted into the "write data buffer", and then returns it to the host device of the IIC after serial timing conversion. Similarly, when the host device writes data, it first sends a write data control command. After the multi-slave controller 2 receives it, it puts the data into the read data buffer through serial timing conversion. After the central processing unit 1 receives the interrupt, it reads the data in the "read data buffer".

[0069] Among them, correct address == 0 means that the target device address does not exist in the device address pool, correct address == 1 means that the target device address exists in the device address pool, write == 1 means the write data control instruction sent by the host device, read == 1 means the read data control instruction sent by the host device, and response signal = 1 means sending a response signal to the host device.

[0070] After the multi-slave controller 2 generates an interrupt, it is equivalent to notifying the CPU to read the register module to confirm the target device address currently in communication transmission, drive different external devices according to different addresses, and then write and read the data sent or received, completing the process of IIC data communication.

[0071] When the current data transmission is completed (or in the transmission state), the control module of the multi-slave controller 2 receives an end signal notification, and the internal state machine jumps to the idle state, waiting for the next data transmission.

[0072] As an alternative embodiment, the register module is further configured to: under the control of the central processing unit 1, save the configuration parameters of the addressing mode, so as to adjust the addressing mode used by the control device.

[0073] Specifically, considering that the register module can meet the configuration function of the addressing mode, the register module in the embodiment of the present invention can also, under the control of the central processing unit 1, save the configuration parameters of the addressing mode, such as the selection parameters of the 7-bit or 10-bit addressing mode. When the system needs to adjust the addressing mode, the (BMC internal) CPU sends an instruction to the register module through the control bus to modify the configuration parameters, thereby adjusting the addressing mode used by the control device to adapt to different device connection requirements.

[0074] Among them, in addition to configuring the addressing mode, the register module can also, under the control of the central processing unit 1, save the configuration parameters of the interrupt type, so as to adjust the interrupt type used by the control device.

[0075] As an alternative embodiment, the data buffer module includes a bus data parsing module, a write data buffer, and a read data buffer; the bus data parsing module is configured to parse the data sent by the central processing unit 1 through the control bus, store the parsed data in the write data buffer, and is further configured to send the data in the read data buffer to the control bus of the central processing unit 1; the control device is further configured to send the data in the write data buffer to the host device through the data interface module, and write the data sent by the host device into the read data buffer.

[0076] Specifically, the bus data parsing module receives the data sent by the central processing unit 1 through the control bus (such as the APB bus), parses it, and stores it in the write data buffer. When it is necessary to send the data back to the central processing unit 1, the bus data parsing module reads the data from the read data buffer and sends it to the control bus of the central processing unit 1. The control device sends the data in the write data buffer to the host device through the data interface module; at the same time, writes the data sent by the host device into the read data buffer to achieve the orderly transmission of data between different devices.

[0077] Among them, the write data buffer and the read data buffer can be of various types respectively. For example, they can be FIFO (First In First Out), etc., and the embodiments of the present invention do not make limitations here.

[0078] Specifically, the data buffer module in the above form can efficiently and stably achieve the orderly transmission of data between different devices.

[0079] Of course, in addition to the above form, the data buffer module can also be of many other types, and the embodiments of the present invention do not make limitations here.

[0080] As an alternative embodiment, the central processing unit 1 is further configured to: in response to a configuration instruction, modify the device addresses in the device address pool.

[0081] Specifically, after receiving the configuration instruction, the central processing unit 1 (such as the CPU inside the BMC) can modify the device addresses in the device address pool. For example, when a new external device is added to the system, the CPU inside the BMC sends an instruction to the address pool module of the multi-slave controller 2 via the control bus according to the address information of the new device, and adds the new device address to the address pool; if a device is removed, the corresponding device address is deleted to ensure the consistency between the address pool and the actual external devices and guarantee normal communication of the system.

[0082] Please refer to Figure 6 , Figure 6 FIG.

[0083] For the introduction of the multi-slave control method provided by the embodiments of the present invention, please refer to the embodiments of the multi-slave control system described above, and the embodiments of the present invention will not be elaborated herein.

[0084] Please refer to Figure 7 , Figure 7 FIG.

[0085] For the introduction of the multi-slave control device provided by the embodiments of the present invention, please refer to the embodiments of the multi-slave control system described above, and the embodiments of the present invention will not be elaborated herein.

[0086] The present invention also provides a computer program product, including a computer program / instructions, which when executed by a processor, implement the steps of the multi-slave control method in the foregoing embodiments.

[0087] For the introduction of the computer program product provided by the embodiments of the present invention, please refer to the embodiments of the multi-slave control system described above, and the embodiments of the present invention will not be elaborated herein.

[0088] Please refer to Figure 8 , Figure 8 which is a schematic structural diagram of a computer-readable storage medium provided by the present invention. A computer program 82 is stored on the computer-readable storage medium 8. When the computer program 82 is executed by a processor, the steps of the multi-slave control method in the foregoing embodiments are implemented.

[0089] For the introduction of the computer-readable storage medium provided by the embodiments of the present invention, please refer to the embodiments of the foregoing multi-slave control system. The embodiments of the present invention will not be elaborated herein.

[0090] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple. For the relevant parts, please refer to the descriptions in the method part. It should also be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising such element.

[0091] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-slave control system, characterized in that: include: A central processing unit connected to multiple external devices, for realizing data interaction between a host device and a target external device through the multi-slave controller according to a data interaction type specified by a read / write flag in a data control command after being triggered by the multi-slave controller; A multi-slave controller connected to the central processor and the host device of the integrated circuit bus respectively, used to determine whether the target device address in the data control command sent by the host device of the integrated circuit bus exists in the preset device address pool; if so, triggering the central processor; The device address pool includes the device addresses of various external devices that are connected to the central processing unit for communication. The data interaction type includes read or write. The target external device is: the external device whose device address is the target device address.

2. The multi-slave control system according to claim 1, characterized in that: The multi-slave controller includes a control device, a data interface module, a data buffer module and an address pool module; The data interface module is respectively connected to the host device of the integrated circuit bus, the control device and the address pool module, and the data buffer module is respectively connected to the control device and the central processing unit; The data interface module is used to implement data transmission between the address pool module and the control device and the host device respectively; The address pool module is used to determine whether the target device address exists in the preset device address pool and give a determination result after receiving the target device address in the data control command sent by the host device through the data interface module; The control device is used to trigger the central processing unit when the judgment result is yes; The data buffer module is used to implement read and write data buffering between the host device and the target device connected to the central processing unit.

3. The multi-slave control system according to claim 2, characterized in that: The address pool module includes a multi-bit register and a multi-level selection module; The number of bits of a multi-bit register is: the total number of device addresses supported by the number of bits of the addressing mode, and the number of levels of the selector of the multi-level selection module is equal to the number of bits of the addressing mode; The multi-stage selection module is used to input the value of each bit sequence in the binary target device address as a control signal to the control end of each selector in the layer corresponding to the bit sequence in the multi-stage selection module, so that the multi-stage selection module outputs the register value of the register bit corresponding to the target device address; Wherein, when the register value output by the multi-stage selection module is a preset valid value, it indicates that the target device address exists in the preset device address pool.

4. The multi-slave control system according to claim 3, characterized in that: The number of selectors at each level in the multi-level selection module is: X / 2 n ； The input end of any selector of the first level is connected to one bit of the multi-bit register in one-to-one correspondence, the output end of each selector of the previous level is connected to the input end of each selector of the next level in one-to-one correspondence, and the output end of the selector of the nth level is used as the output end of the multi-level selection module; Where X is the number of bits in the multi-bit register and n is the level number.

5. The multi-slave control system according to claim 1, characterized in that: The host device includes a host of a server.

6. The multi-slave control system according to claim 5, characterized in that: The central processor comprises a central processor of a baseboard management controller of the server; The multi-slave controller is integrated into a baseboard management controller.

7. The multi-slave control system according to claim 2, characterized in that: The data interface module includes a data sampling and transmission module, an address shift register and a data shift register; The data sampling and transmission module is used to convert the serial data sent by the host device into parallel data, and under the control of the control device, convert the device address in the address shift register and the data in the data shift register into serial data and then send them to the host device; The address shift register is used to store the target device address sent by the host device under the control of the data sampling and transmission module, and is also used to store the device address sent by the control device under the control of the control device; The data shift register is used to store data sent by the host device under the control of the data sampling and transmission module, and is also used to store data sent by the control device under the control of the control device.

8. The multi-slave control system according to claim 2, characterized in that: The control device includes a control module, an interrupt generation module, a response processing module and a register module; The control module is used to control the response processing module to send a response signal to the host device when the judgment result is yes, store the target device address in the register module, and control the interrupt generation module to send an interrupt to the central processing unit, so as to trigger the central processing unit to obtain the target device address from the register module and communicate with the target external device.

9. The multi-slave control system according to claim 8, characterized in that: The register module is also used for: The configuration parameters of the addressing mode are saved under the control of the central processing unit to adjust the addressing mode used by the control device.

10. The multi-slave control system according to claim 2, characterized in that: The data buffer module includes a bus data analysis module, a write data buffer and a read data buffer; The bus data parsing module is used to parse the data sent by the central processing unit through the control bus, store the parsed data in the write data buffer, and send the data in the read data buffer to the control bus of the central processing unit; The control device is also used to send the data in the write data buffer to the host device through the data interface module, and write the data sent by the host device into the read data buffer.

11. The multi-slave control system according to any one of claims 1 to 10, characterized in that: The central processing unit is also used for: In response to the configuration instruction, the device address in the device address pool is modified.

12. A multi-slave control method, characterized in that: Applicable to multi-slave control devices, including: Obtaining a target device address in a data control command sent by a host device of an integrated circuit bus; Determine whether the target device address exists in a preset device address pool, wherein the device address pool includes device addresses of each external device that is communicatively connected to the multi-slave control device; If it exists, data interaction is performed with the target external device according to the data interaction type specified by the read / write flag in the data control command, wherein the data interaction type includes read or write, and the target external device is: an external device whose device address is the target device address.

13. A multi-slave control device, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the multi-slave control method as claimed in claim 12 when executing the computer program.

14. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the multi-slave control method as claimed in claim 12 are implemented.

15. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the multi-slave control method according to claim 12 are implemented.

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