KR102199072B1 - Method for controlling time information based serial communication and apparatus for the same - Google Patents

Abstract

A method of controlling serial communication based on time information is disclosed. The serial communication control method according to the present invention includes the steps of receiving transmission time information of data from a microcontroller unit (MCU) and setting it in a setting register, storing the data received from the MCU in a buffer. The transmission control unit determines the presence or absence of the data in the buffer, and if the data is present in the buffer, the data stored in the buffer is based on at least one serial communication based on the transmission time information of the data set in the setting register. And transmitting to the communication device.

Description

Time information-based serial communication control method and apparatus {METHOD FOR CONTROLLING TIME INFORMATION BASED SERIAL COMMUNICATION AND APPARATUS FOR THE SAME}

The present invention relates to a serial communication method and apparatus, and more particularly, to a serial communication control method and apparatus based on transmission/reception time information and control thereof.

Serial communication is a communication method in which data is transmitted and received between two different devices in a serial manner using one (or two) transmission lines (signal lines). In serial communication, data is transmitted one bit at a time using one transmission line. Therefore, in order to accurately receive data at the receiving side, the transmitting side must know the speed at which each bit is transmitted.

UART (universal asynchronous receiver/transmitter) is a separate integrated circuit for serial communication that serializes and communicates parallel data. Since UART is asynchronous communication, no synchronous signal is transmitted, so it is promised to be able to process by finding the start and end of data by finding the synchronous signal at the receiver side.

Another type of serial communication means, USRT (universal synchronous transceiver: universal synchronous transceiver: Universal Synchronous Transceiver: Universal Synchronous Transceiver: Universal Synchronous Transceiver: receiver/transmitter).

It is possible to remotely transmit and receive data obtained by applying a communication method such as the RS-485 standard, which is a type of UART communication. A communication device using serial communication such as UART (hereinafter referred to as a serial communication-based communication device) is installed in a building It can be used for control and condition monitoring of renewable energy devices such as attached watt-hour meters, water meters and solar power.

Meanwhile, as data obtained from remote IoT devices increases exponentially due to the expansion of the IoT, attempts to provide services such as failure prediction of IoT devices through big data-based AI (artificial intelligence) analysis are increasing. Are doing.

However, since the data acquired (received) through serial communication with a serial communication-based communication device applying the conventional serial communication method does not contain information about the time when the data was acquired, processing, precise analysis, and tracking management for the data And there is a problem in applying AI analysis based on big data in precise control.

An object of the present invention for solving the above problems is to provide a method of controlling serial communication based on transmission/reception time information and control thereof.

Another object of the present invention is to provide a time information-based serial communication control apparatus for performing serial communication based on transmission/reception time information and control thereof.

A method for controlling serial communication based on time information according to an embodiment of the present invention for achieving the above object includes the steps of receiving transmission time information of data from a microcontroller unit (MCU) and setting it in a setting register, from the MCU. Storing the received data in a buffer, determining the presence or absence of the data in the buffer by a transmission control unit, and if the data is present in the buffer, based on the transmission time information of the data set in the setting register And transmitting the data stored in the buffer to at least one serial communication-based communication device.

The method for controlling serial communication based on time information according to an embodiment of the present invention further includes setting an internal time as a reference for a data processing operation based on time information received from the MCU.

A method for controlling serial communication based on time information according to an embodiment of the present invention includes receiving a reference time from at least one of a GPS, a time server, and the MCU, and correcting the internal time based on the received reference time. Include more.

In addition, the step of correcting the internal time is performed based on at least one of a preset period in the MCU and a user request from the MCU.

In addition, the step of transmitting the data stored in the buffer to a serial communication-based communication device includes transmitting the data stored in the buffer to a serial communication converter, for transmitting the data from the serial communication converter to the serial communication-based communication device. And performing conversion, and transmitting the converted data to the serial communication-based communication device by the serial communication converter.

In addition, the transmission time information of the data includes time information of a clock signal reflection time.

Further, the transmission time information of the data is changed based on at least one of the data and the serial communication-based communication device.

A method for controlling serial communication based on time information according to another embodiment of the present invention for achieving the above object comprises: setting an internal time based on time information received from a microcontroller unit (MCU), at least one serial communication-based communication Setting a reception timing for determining a reception timing for data from a device in a setting register, and setting a transmission path for transmitting information on a reception time of received data to the MCU in accordance with the reception timing in the setting register Receiving data from the at least one serial communication-based communication device and storing it in a buffer based on the setting of the setting register, acquiring a reception time for the received data according to the reception timing, and the And transmitting information on the acquired reception time to the MCU through the transmission path.

According to another embodiment of the present invention, a method for controlling serial communication based on time information includes receiving a reference time from at least one of a GPS, a time server, and the MCU, and correcting the internal time based on the received reference time. Include more.

In addition, the step of correcting the internal time is performed based on at least one of a preset period in the MCU and a user request from the MCU.

In addition, the reception timing is a timing when a clock signal is reflected.

In addition, the transmission path of the information on the reception time is at least one of a control interface unit and the buffer.

In addition, at least one of the reception timing and the transmission path is changed based on at least one of the data and the serial communication-based communication device.

Further, data received from the at least one serial communication-based communication device is data converted by a serial communication converter.

A serial communication control apparatus based on time information according to an embodiment of the present invention includes a buffer, a clock (a microcontroller unit) storing data for communication between at least one of a microcontroller unit (MCU) and at least one serial communication-based communication device. clock) signal-based time-of-day (TOD) that generates and manages an internal time, a time control unit that performs internal time correction to improve the precision of the internal time, and the buffer at a transmission time designated by the MCU. A transmission control unit that controls the transmission of the stored data to the at least one serial communication-based communication device, and when the data is received from the serial communication-based communication device, a time tagger that obtains a reception time based on the internal time ) Unit, the TOD, a time control unit, a transmission control unit, and a setting register in which control information for at least one of a time tagging unit is set, and between the MCU and at least one of the TOD, a time adjusting unit, a setting register, and a time tagging unit And a control interface unit through which at least one of the control information, information on a transmission time, and information on a reception time moves.

Also, the transmission control unit determines whether the data is present in the buffer.

In addition, the setting register is further set with information on a time point of reflection of a clock signal necessary for determining the transmission time and the reception time.

Further, the setting register further sets information on a transmission path through which the information on the reception time is transmitted to the MCU.

In addition, the transmission path is at least one of the control interface unit and the buffer.

In addition, the time adjustment unit performs the internal time correction based on a reference time received from at least one of a GPS, a time server, and the MCU.

According to the present invention, serial communication can be performed based on a plurality of serial communication-based communication devices and transmission/reception time information and control thereof, and through this, precise analysis and tracking management of data obtained from a plurality of serial communication-based communication devices And big data-based AI analysis service based on precision control can be applied.

1 is a block diagram illustrating an apparatus for controlling serial communication based on time information according to an embodiment of the present invention.
2 is a block diagram illustrating communication using a UART converter according to an embodiment of the present invention.
3 is a flowchart illustrating data transmission in a serial communication control method based on time information according to an embodiment of the present invention.
4 is a flowchart illustrating data transmission in a serial communication control method based on time information according to another embodiment of the present invention.
5 is a block diagram illustrating an apparatus for controlling serial communication based on time information according to another embodiment of the present invention.
6 is a block diagram illustrating an apparatus for controlling serial communication based on time information according to another embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and some embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to a specific embodiment, and the scope of the present invention should be understood as including all changes, modifications, equivalents or substitutes belonging to the technical idea of the present invention conceived from the embodiments. do.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. It should be understood that there is no other component in the middle only when it is stated that a component is "directly connected" or "directly connected" to another component.

The terms used in the present application are only used to describe the examples presented, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

All terms used in this specification, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs, and an ideal or excessively reduced formal meaning In the present specification, when defining the meaning of a term, the term should be interpreted as defined.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, in order to facilitate an overall understanding, the same reference numerals are used for the same elements in the drawings, and duplicate descriptions for the same elements are omitted.

1 is a block diagram illustrating an apparatus for controlling serial communication based on time information according to an embodiment of the present invention.

Referring to FIG. 1, the serial communication control apparatus 100 based on time information according to an embodiment of the present invention is transmitted from a buffer 105 for temporary designation of data (including a packet) and an MCU 140 to be buffered. The transmission controller (TC) 110 performing time information-based transmission control for the data stored in 105, and the reception time for the data received from the UART device 160, which is an external serial communication-based communication device. It includes a time tagger (TT) unit 115 for storing and a time-of-day (TOD) unit 125 for generating and managing an internal time based on a clock signal (the following embodiment For convenience, the case where UART is applied among serial communication-based communication devices is mainly described, but it can also be applied to USRT).

In addition, the time information-based serial communication control apparatus 100 according to an embodiment of the present invention includes a time control unit 130 that performs internal time correction for improving the precision of the internal time, and the time information-based serial communication control apparatus 100 ), a configuration register (CR) unit 135 in which control information is set, and a control interface (a path for exchanging setting information, time information, and control information in the time information-based serial communication control device 100 with the MCU) ( 120).

The time information-based serial communication control apparatus 100 according to an embodiment of the present invention is used for data communication between a microcontroller unit (MCU) 140 of a device such as an embedded device or a computer and a UART device 160 corresponding to a peripheral device. Data communication is performed by serial communication based on time information.

The serial communication control apparatus 100 based on time information according to an embodiment of the present invention may be implemented in the form of a field programmable gate array (FPGA) or an application-specific integration circuit (ASIC).

The buffer 105 in the serial communication control apparatus 100 based on time information according to an embodiment of the present invention temporarily stores data transmitted and received between the MCU 140 and the UART device 160. The UART device 160 corresponds to a computer peripheral device or an external IoT device, and the MCU 140 is a central processing unit of a device (computer or embedded device) that performs data communication with the corresponding UART device 160 through a serial communication method. It corresponds to (including a controller) (the MCU in the embodiment of the present invention below means a device that performs serial communication with the UART device 160).

On the other hand, UART is a kind of computer hardware that transmits data by converting the form of parallel data into a serial method. UART can be implemented by applying communication standards such as EIA RS-232, RS-422, and RS-485 in general. In general, in an embedded system equipped with the MCU 140, a chip with a driver circuit is used to convert the TTL level signal from the MCU to the signal level used in UART communication. Data can be transmitted and received by one bit in units of up to 8 bits.

To this end, in general, during serial communication, conversion of the TTL level of the MCU 140 to a UART level suitable for serial communication (or vice versa) is performed, or for serial communication between a plurality of UART devices and the MCU 140. A UART converter 150 is also used. As shown in Fig. 2, in the prior art UART converter, the same line 250 is used to transmit and receive data to and from the two-line method 210 using different lines 220 and 230 when transmitting and receiving data between the UART converter and the external peripheral UART device. The single line system 240 used is a representative implementation example.

Meanwhile, the MCU can directly communicate with the UART device through the UART IO of the corresponding MCU, or communicate with the UART device through a UART converter based on the communication standard applied to the UART device. Among the communication standards applied to UART devices, RS-485 supports multi-drop, and up to 32 devices can be connected in a bus method through a common single line (bidirectional line). In addition, communication lines are managed through IDs independently assigned to each UART device (multi-drop refers to a communication environment in which multiple devices can share a single line).

In general, the single-line method 240 uses a two-line differential method and has better noise shielding performance than the two-line method 210, but transmits and receives data to and from the MCU through the same line. Since data transmission/reception is impossible, it becomes more problematic in the case of attempting to perform serial communication reflecting time information in the MCU.

In addition, even in the case of the 2-line method 210, when the MCU controls the UART device at a specific time and when the serial communication time information is grafted to perform processing depending on the reception time information of the received data from the UART device. There is a problem in performing serial communication reflecting time information due to the load of the program driven by the MCU, the transmission delay of the data in the MCU, and the UART communication delay.

The TOD 125 generates and manages the internal time of the serial communication control apparatus 100 based on time information according to an embodiment of the present invention based on a clock signal.

When transmitting the data transmitted from the MCU 140 and stored in the buffer 105 to the UART device 160, the transmission control unit 110 controls the transmission based on time information to be performed. Specifically, the transmission control unit 110 may control to transmit data at a specific time or at a predetermined period.

The time adjustment unit 130 performs a correction function to improve the precision of the internal time generated from the TOD 125. To this end, time correction (including synchronization) may be performed by receiving a reference time from an external time server, a GPS time information providing device, or a real time clock (RTC) of the MCU and comparing it with the reference time. The correction in the time adjustment unit 130 may be performed at regular periodic intervals set in the MCU 140 or may be performed aperiodically at the request of the MCU user.

When the time information-based serial communication control device 100 according to an embodiment of the present invention receives the data transmitted from the external UART device 160 to the MCU 140, the time tagging unit 115 is one of the present invention. The time received in the buffer 105 of the serial communication control apparatus 100 based on time information according to the embodiment is checked and stored. The time point at which the time tagger 115 checks the data reception time is based on a bit corresponding to an order determined by setting of the MCU 140 among received data.

In addition, you can check the reception time by changing the time when the clock signal is reflected at the time when data is received (receive timing). An example of the timing of reflecting the clock signal may be a rising-edge or a falling-edge.

The setting register 135 sets control information for the serial communication control apparatus 100 based on time information. For example, the setting register may set a signal reflection point of a clock required for data transmission/reception, or whether to set a transmission/reception start time or a transmission/reception completion time when setting a data transmission/reception time.

In addition, the setting register 135 may set a path to transmit the data reception time information checked and recorded by the time tagging unit 115 to the MCU 140. That is, the reception time information may be transmitted (transmitted) to the MCU 140 through the buffer 105, or may be transmitted to the MCU 140 through the control interface 120. This transmission path is provided in the setting register 135. Information about can be set.

Meanwhile, information on the operation of the serial communication control device 100 based on time information set in the setting register 135 may be set differently for each UART device 160 and applied, and even the same UART device 160 may be set differently for each data. Can be applied. That is, a clock signal reflection time point, time information transmission path, data transmission time point, etc. applied during serial communication with a specific UART device 160 may be applied differently for each data and/or for each target UART device 160.

The control interface 120 exchanges setting information, time information, and control information in the serial communication control apparatus 100 based on time information with the MCU. That is, the control interface 120 may serve as a path for exchanging setting information, control information, and time information with the MCU 140. After setting information about the transmission time of the data received from the MCU 140 through the control interface 120 (transmission execution time, transmission execution time, clock signal reflection time, etc.) in the setting register, the transmission control unit 110 Based on the data, transmission of the data in the buffer 105 to the UART device 160 can be controlled.

In addition, reference time information for internal time correction for the time adjustment unit 110 may be transmitted from the MCU 140 through the control interface 120. Next, a data transmission/reception method using the serial communication control apparatus 100 based on time information according to an embodiment of the present invention will be described.

3 is a flowchart illustrating data transmission in a serial communication control method based on time information according to an embodiment of the present invention.

Referring to FIG. 3, at least one UART device in the MCU 140 using a time information-based serial communication control device 100 corresponding to the time information-based serial communication control device according to an embodiment of the present invention of FIG. It represents a case of transmitting data to a serial communication-based communication device 100 such as (corresponding to a computer peripheral device or an IoT device). In the following embodiments, a serial communication-based communication device means a device that uses serial communication for communication with an external device.

The MCU 140, such as an embedded device or a computer, transmits and receives data to and from at least one serial communication-based communication device 160 through a serial communication method. When transmitting data from the MCU 140 to the serial communication-based communication device 160, the time information-based serial communication control device 100 for transmitting based on the time information-based serial communication according to an embodiment of the present invention is set to Check the required setting information in the setting register.

For example, in the setting register, the timing of reflecting the signal of the clock required for data transmission/reception requested from the MCU 140 (or set by the serial communication controller 100 based on time information) It is possible to perform serial communication based on it by checking (whether it is set based on the initial data transmission/reception time or the final data transmission/reception completion time). In addition, data transmission time information corresponding to a time point at which data is transmitted from the MCU 140 to the serial communication-based communication device 160 may be stored in the setting register.

The time information-based serial communication control apparatus 100 according to an embodiment of the present invention transmits related information necessary for performing time information-based serial communication according to the present invention, such as data transmission time information from the MCU 140, through a control interface. It receives (S310). The time information-based serial communication control apparatus 100 according to the present invention sets (stores) the received corresponding information in a setting register (S320). Next, the time information-based serial communication control apparatus 100 according to an embodiment of the present invention receives data from the MCU 140 (S330) and stores the data in a buffer in the time information-based serial communication control apparatus 100 (S340). ).

Here, various mapping relationships may be established between setting information for performing serial communication based on time information according to an embodiment of the present invention with respect to data stored in the buffer. For example, setting information such as a specific transmission time and a clock signal reflection time may be set differently for each data of the same serial communication-based communication device 160, or may be set differently for each serial communication-based communication device 160. . Such information may be set in the configuration register or included in the data to be transmitted and received.

Next, the transmission control unit of the time information-based serial communication control apparatus 100 according to an embodiment of the present invention checks whether data required to be transmitted in the buffer is stored (S350). When the transmission control unit confirms that the data to the specific serial communication-based communication device 160 is stored in the buffer, the corresponding data is transmitted to the serial communication-based communication device 160 using the setting information in the setting register for the data ( S360).

Meanwhile, when transmitting data from the time information-based serial communication control device 100 to at least one serial communication-based communication device 160 based on the time information-based serial communication control method according to an embodiment of the present invention, a UART converter and a It can be sent to the same serial communication converter first. After that, the serial communication converter performs appropriate conversion (voltage level conversion and/or path setting to be transmitted to a specific serial communication-based communication device among a plurality of serial communication-based communication devices), and then the serial communication-based communication device ( 160) can be transmitted.

In addition, in the time information-based serial communication control method according to an embodiment of the present invention, the time information-based serial communication control device 100 is based on the time information received from the MCU through the control interface, the reference for the data processing operation in the TOD. You can set the internal time to be used. In addition, in the time information-based serial communication control method according to an embodiment of the present invention, the time information-based serial communication control device 100 receives a reference time from at least one of MCU, GPS, and time server through a control interface, The internal time can be corrected based on the reference time. In this case, the internal time correction in the serial communication control method based on time information according to an embodiment of the present invention may be performed at a predetermined periodic interval set in the MCU or may be performed at a request (aperiodic interval) of the MCU user.

In addition, the data transmission time information in the serial communication control method based on time information according to an embodiment of the present invention may be changed based on at least one of the corresponding data and the serial communication-based communication device 160. Next, as data transmission in the time information-based serial communication control method according to another embodiment of the present invention, a description will be given of receiving data from at least one serial communication-based communication device by the MCU.

4 is a flowchart illustrating data transmission in a method for controlling serial communication based on time information according to another embodiment of the present invention.

Referring to FIG. 4, by using the time information-based serial communication control device 100 corresponding to the time information-based serial communication control device according to an embodiment of the present invention of FIG. It represents a case of receiving data from a serial communication-based communication device 100 such as a device (or IoT device).

The MCU 140, such as an embedded device or a computer, transmits and receives data through a serial communication method with at least one serial communication-based communication device 160 corresponding to a UART peripheral period (including an Internet of Things device). At this time, in order to transmit data from the at least one serial communication-based communication device 160 to the MCU 140 through the time information-based serial communication control device 100 according to an embodiment of the present invention, a related operation to the setting register You need to set up for it.

First, the time information-based serial communication control apparatus 100 may set an internal time that is a reference for a data processing operation in the TOD based on time information received (S410) from the MCU through the control interface (S420).

In addition, in the time information-based serial communication control method according to an embodiment of the present invention, the time information-based serial communication control device 100 receives a reference time from at least one of MCU, GPS, and time server through a control interface, The internal time can be corrected based on the reference time. In this case, the internal time correction in the serial communication control method based on time information according to an embodiment of the present invention may be performed at a predetermined periodic interval set in the MCU or may be performed at a request (aperiodic interval) of the MCU user.

In addition, the time information-based serial communication control apparatus 100 according to an embodiment of the present invention sets a reception timing, which is a time point at which data to the serial communication-based communication apparatus 160, is received in a setting register (S430). The reception timing is based on a specific order of bits of the received data and can be set as a clock point such as a rising-edge or a falling-edge.

In addition, information about a transmission path for transmitting information about a data reception time acquired by a time tagging unit to be described later to the MCU 140 is also set in the setting register (S440). As the transmission path, a path transmitted through a buffer and a path transmitted through a control interface are possible.

The time stamping unit of the serial communication control apparatus 100 based on time information according to an embodiment of the present invention receives data from the serial communication-based communication apparatus based on the set reception timing (S450), and determines the reception time for the data. It can be acquired based on the reception timing and the internal time (S460). At the same time, the received data is stored in the buffer 105 of the serial communication control apparatus 100 based on time information (S460).

Meanwhile, various mapping relationships may be established in setting information set to perform serial communication based on time information according to an embodiment of the present invention with respect to data stored in a buffer. For example, setting information such as a specific transmission path and a clock signal reflection time may be set differently for each serial communication-based communication device 160.

The serial communication control apparatus 100 based on time information according to an embodiment of the present invention transmits data stored in the buffer to the MCU 140 and sets the transmission path (buffer or control interface) for information on the reception time for the data. It is transmitted to the MCU 140 through (S470).

On the other hand, based on the time information-based serial communication control method according to an embodiment of the present invention, when the time information-based serial communication control device 100 receives data from the serial communication-based communication device 160, a serial communication device such as a UART converter It is also possible to receive data for which the related conversion has been performed in the communication converter.

That is, data transmitted from at least one serial communication-based communication device 160 is first received by a serial communication converter, and necessary conversion (voltage level conversion, etc.) is performed, and then data is transferred to the serial communication control device 100 based on time information. Can be sent. Next, an integrated time information serial communication control device to which an integrated serial communication management unit for managing at least one time information-based serial communication control device according to another embodiment of the present invention is applied will be described.

5 is a block diagram illustrating an apparatus for controlling serial communication based on integrated time information according to another embodiment of the present invention.

5, an integrated serial communication control device 500 based on time information according to another embodiment of the present invention includes an integrated serial communication management unit 530 and a high-speed interface that manages at least one time information-based serial communication control device. 520).

The MCU 510 is an embedded device or a computer, such as a UART peripheral device (including Internet of Things), at least one serial communication-based communication device (550-1, ..., 550-N) and data in a serial communication method. Send and receive.

In general, serial communication-based communication devices (including UART peripheral devices, IoT devices, sensors, and motors) operate at a fixed serial communication communication speed. As shown in FIG. In order to perform serial communication with the serial communication-based communication devices (550-1, ..., 550-N), a communication speed proportional to the number of serial communication-based communication devices connected to the MCU 510 is required. The serial communication control apparatus 500 based on integrated time information according to the embodiment may perform high-speed data transmission/reception using the high-speed interface 520.

In the serial communication control device 500 based on integrated time information according to another embodiment of the present invention, the MCU 510 at different speeds in at least one serial communication-based communication device 550-1, ..., 550-N When data is transmitted to, one of the time information-based serial communication control devices (530-1, ..., 530-N) and one of the serial communication-based communication devices (550-1, ..., 550-N) It includes an integrated serial communication management unit 530 that controls to perform serial communication at a mutually requested (allowed) rate.

The serial communication control device 500 based on integrated time information according to another embodiment of the present invention includes conversion (signal level conversion, etc.) necessary for serial communication with the serial communication-based communication devices 550-1, ..., 550-N. A serial communication converter (540-1, ..., 540-N) for performing) may be included. Such serial communication converters 540-1, ..., 540-N are implemented outside the serial communication control device 500 based on integrated time information according to another embodiment of the present invention, or are not implemented at all inside and outside the device. It may not be possible (that is, a serial communication-based communication device and an integrated time information-based serial communication control device can be directly connected without related conversion through a serial communication converter). Next, a specific application example of a serial communication control apparatus based on integrated time information according to another embodiment of the present invention will be described.

6 is a block diagram illustrating an apparatus for controlling serial communication based on integrated time information according to another embodiment of the present invention.

6, a serial communication control device 600 based on integrated time information according to another embodiment of the present invention is a specific embodiment of the serial communication control device based on integrated time information shown in FIG. Controls data communication by serial communication of the same or different speed between the communication-based communication devices 620-1, ..., 620-N and the MCU 610.

In addition, in the integrated time information-based serial communication control device 600 according to another embodiment of the present invention, some functions of the time information-based serial communication control device included in the integrated time information-based serial communication control device 600 are commonly used. While (CR(SR), TOD, time control unit, etc.)other functions are connected one-to-one with external serial communication-based communication devices (620-1, ..., 620-N), high-speed interface and integrated serial communication management unit It can be implemented to perform serial communication through. However, the present invention is not limited thereto, and may be implemented to use all functions in common or implemented as separate blocks.

Meanwhile, CR(SR) of FIG. 6 is a configuration register (CR) and a status register (SR). The CR (SR) may include a setting register function in the serial communication control device based on time information according to an embodiment of the present invention of FIG. 1, and the connection status of each UART converter, connection speed, time-based transmission and reception, etc. Status information and setting information for the operation of various devices implemented in the serial communication control apparatus based on integrated time information according to an embodiment of the present invention may be stored.

Meanwhile, each of the above-described configurations has been described as a separate device, but this is only an exemplary description for convenience of description and enhancement of understanding, and may be implemented in various forms within the scope of the technical idea of the present invention. Of course. For example, the transmission control unit and the time tagging unit may be implemented by being integrated into one module, or may be implemented by dividing into two or more devices.

The methods according to the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like alone or in combination. The program instructions recorded on the computer-readable medium may be specially designed and configured for the present invention, or may be known and usable to those skilled in computer software.

Examples of computer-readable media include hardware devices specially configured to store and execute program instructions, such as rom, ram, flash memory, and the like. Examples of program instructions include not only machine language codes such as those produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The above-described hardware device may be configured to operate as at least one software module to perform the operation of the present invention, and vice versa.

In the above, the configuration of the present invention has been described in detail through a preferred embodiment of the present invention. However, the above-described embodiments are for illustrative purposes only, and do not limit the scope of the present invention. Those of ordinary skill in the art of the present invention will be able to make various modifications and changes within the scope of the technical idea of the present invention from the teachings and suggestions of the present specification. Accordingly, the scope of protection of the present invention should be determined by the description of the following claims.

Claims (20)

As a control method of a serial communication-based device,
Receiving data transmission time information from a microcontroller unit (MCU) and setting it in a setting register;
Storing the data received from the MCU in a buffer;
Determining the presence or absence of the data in the buffer by a transmission control unit; And
Time information-based serial communication control method comprising the step of transmitting the data stored in the buffer to at least one serial communication-based communication device based on the transmission time information of the data set in the setting register when the data is present in the buffer . The method of claim 1,
Time information-based serial communication control method further comprising the step of setting an internal time as a reference for the data processing operation based on the time information received from the MCU. The method of claim 2,
Receiving a reference time from at least one of a GPS, a time server, and the MCU; And
Time information-based serial communication control method further comprising the step of correcting the internal time based on the received reference time. The method of claim 3,
The step of correcting the internal time is performed based on at least one of a preset period in the MCU and a user request from the MCU. The method of claim 1,
Transmitting the data stored in the buffer to a serial communication-based communication device
Transmitting the data stored in the buffer to a serial communication converter;
Performing conversion for transmitting the data to the serial communication-based communication device by the serial communication converter; And
Transmitting the converted data from the serial communication converter to the serial communication-based communication device, time information-based serial communication control method. The method of claim 1,
The time information-based serial communication control method, wherein the transmission time information of the data includes time information when a clock signal is reflected. The method of claim 6,
The time information-based serial communication control method is changed based on at least one of the data and the serial communication-based communication device. As a control method of a serial communication-based device,
Setting an internal time based on time information received from a microcontroller unit (MCU);
Setting a reception timing for determining a reception timing of data from at least one serial communication-based communication device in a setting register;
Setting a transmission path for transmitting information on a reception time of received data to the MCU in accordance with the reception timing in the setting register;
Receiving data from the at least one serial communication-based communication device and storing it in a buffer based on the setting of the setting register;
Acquiring a reception time for the received data according to the reception timing; And
And transmitting the obtained information on the reception time to the MCU through the transmission path. The method of claim 8,
Receiving a reference time from at least one of a GPS, a time server, and the MCU; And
Time information-based serial communication control method further comprising the step of correcting the internal time based on the received reference time. The method of claim 9,
The step of correcting the internal time is performed based on at least one of a preset period in the MCU and a user request from the MCU. The method of claim 8,
The reception timing is a timing of reflecting a clock signal, a method for controlling serial communication based on time information. The method of claim 11,
The transmission path of the information on the reception time is at least one of a control interface unit and the buffer, the time information-based serial communication control method. The method of claim 12,
At least one of the reception timing and the transmission path is changed based on at least one of the data and the serial communication-based communication device. The method of claim 8,
The data received from the at least one serial communication-based communication device is data converted by a serial communication converter. A buffer for storing data for communication between at least one of a microcontroller unit (MCU) and at least one serial communication-based communication device;
TOD (time-of-day) for generating and managing an internal time based on a clock signal;
A time adjustment unit performing internal time correction to improve the precision of the internal time;
A transmission control unit for controlling transmission of the data stored in the buffer to the at least one serial communication-based communication device at a transmission time designated by the MCU;
A time tagger unit for obtaining a reception time based on the internal time when the data is received from the serial communication-based communication device;
A setting register for setting control information for at least one of the TOD, a time control unit, a transmission control unit, and a time tag rejection unit; And
Based on time information including a control interface unit in which at least one of the control information, information on transmission time, and information on reception time moves between the MCU and at least one of the TOD, a time control unit, a setting register, and a time tagging unit Serial communication control device. The method of claim 15,
The transmission control unit determines whether the data is present in the buffer. The method of claim 15,
The setting register further sets information on a timing of reflecting a clock signal necessary for determining the transmission time and the reception time. The method of claim 15,
The setting register further sets information on a transmission path through which information on the reception time is transmitted to the MCU. The method of claim 18,
The transmission path is at least one of the control interface unit and the buffer, time information-based serial communication control device. The method of claim 15,
The time control unit performs the internal time correction based on a reference time received from at least one of a GPS, a time server, and the MCU.

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