CN111865408B - Method and system for transmitting set-top signal based on microcontroller and microcontroller - Google Patents
Method and system for transmitting set-top signal based on microcontroller and microcontroller Download PDFInfo
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- CN111865408B CN111865408B CN202010770929.8A CN202010770929A CN111865408B CN 111865408 B CN111865408 B CN 111865408B CN 202010770929 A CN202010770929 A CN 202010770929A CN 111865408 B CN111865408 B CN 111865408B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2210/00—Indexing scheme relating to optical transmission systems
- H04B2210/07—Monitoring an optical transmission system using a supervisory signal
- H04B2210/074—Monitoring an optical transmission system using a supervisory signal using a superposed, over-modulated signal
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Abstract
The invention discloses a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller, wherein the microcontroller comprises an encoding module, a decoding module, a storage module and a storage control module; the storage control module is respectively connected with the coding module and the storage module and is used for transmitting the set-top-tone signal to be transmitted, which is stored in the storage module, to the coding module; the encoding module is used for encoding the set-top signal to be transmitted and outputting the encoded set-top signal to the optical transceiver; the decoding module is connected with the storage control module and is used for demodulating an external tune-up signal received by the optical transceiver and transmitting the demodulated external tune-up signal to the storage module through the storage control module; the invention can realize the function of receiving and transmitting the set-top signal of the microcontroller and can effectively avoid the conflict between the optical module and the set-top signal when the optical module is communicated with the host I2C.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller.
Background
With the commercialization of 5G communications, more and more 5G AAUs (Active Antenna units) are being erected on a large scale. Since the 5G AAU antenna has a large communication data volume, it communicates with a DU (distribution Unit) by using an optical fiber. In 5G communications, AAU and DU are collectively referred to as fronthaul. In order to improve the overhaul and maintenance capacity of the fronthaul network, operators need to perform low-speed communication on the power, temperature, current and voltage alarms of the optical module. In this process, the channel detection technology is an important technology which must be provided. At present, channel monitoring mainly adopts a top-adjusting technology, and a top-adjusting signal is a low-speed optical channel-associated signal generated by a main signal of a wavelength channel at a transmitting end by utilizing a frequency modulation or amplitude modulation technology. It is simply understood that tuning up is equivalent to "superimposing" a small signal on the existing signal, which does not interfere with the transmission of the existing signal, but can carry a small amount of information.
A microcontroller of the existing optical module is not provided with a tuning signal transceiver module, and the tuning signal is decoded and received only by adopting a GPIO external interrupt or query mode for receiving the tuning signal. For sending the set-top signal, the set-top data signal is coded and sent only by adopting a timer according to the data bit width required by the specification, and the set-top signal coding, decoding and receiving operations are all completed one by a CPU in the microcontroller in the process. This task is highest priority, especially when the optical module communicates with the host I2C. If a data packet of the tuning signal comes at this time, the data packet of the tuning signal can be lost, namely, the optical module and the host carry out I2C communication and the tuning signal conflict.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
The invention aims to provide a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller, which can effectively solve the problem that the conflict exists between I2C communication between an optical module and a host and a set-top signal.
In order to achieve the purpose, the invention adopts the following technical scheme:
a microcontroller comprises an encoding module, a decoding module, a storage module and a storage control module; the storage control module is respectively connected with the coding module and the storage module and is used for transmitting the set-top-tone signal to be transmitted, which is stored in the storage module, to the coding module; the encoding module is used for encoding the set-top signal to be transmitted and outputting the encoded set-top signal to the optical transceiver; the decoding module is connected with the storage control module and used for transmitting the external tune-up signal received by the optical transceiver to the storage module through the storage control module after demodulating the external tune-up signal.
In the microcontroller, the storage control module comprises at least one sending channel and at least one receiving channel, and the sending channel is used for transmitting the set-top signal to be sent stored in the storage module to the encoding module; the receiving channel is used for transmitting the external tune-top signal output by the decoding module to the storage module.
In the microcontroller, the set-top signal to be sent comprises first set-top data sent by the host, second set-top data in the external set-top signal and digital diagnostic information.
In the microcontroller, the coding module comprises a top-adjusting signal coder, and the top-adjusting signal coder comprises a first data register, a first shift register and a first control register; the first control register and the first data register are respectively connected with the first shift register.
In the microcontroller, the decoding module comprises a tuning top signal decoder which comprises a second data register, a second shift register and a second control register; the second control register is connected with the second shift register, and the second shift register is also connected with the second data register.
The microcontroller also comprises a transmission bus, wherein the transmission bus comprises a first bus and a second bus; the first bus is used for receiving the first tuning data sent by a host, and the second bus is used for reading the digital diagnostic information of the optical transceiver.
A method for transmitting a set-top signal based on the microcontroller, comprising the following steps:
the storage control module transmits the signal to be sent to the set top box, which is stored in the storage module, to the coding module;
the encoding module encodes the set-top signal to be transmitted and outputs the encoded set-top signal to the optical transceiver;
the decoding module demodulates an external tune-top signal received by the optical transceiver and outputs the demodulated external tune-top signal to the storage control module;
and the storage control module transmits the external tune-top signal output by the decoding module to the storage module.
In the method for transmitting the set-top signal, the step of transmitting the set-top signal to be transmitted to the encoding module by the storage control module comprises the following steps: and the sending channel transmits the set-top signal to be sent to the coding module.
In the method for transmitting the set-top signal, the step of transmitting the external set-top signal output by the decoding module to the storage module by the storage control module comprises the following steps: and the receiving channel transmits the external tune-top signal output by the decoding module to the storage module.
A set-top signal transmission system based on the microcontroller comprises a host, an optical module and an optical fiber, wherein the optical module comprises the microcontroller and an optical transceiver, and the microcontroller comprises an encoding module, a decoding module, a storage module and a storage control module.
Compared with the prior art, the invention provides a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller, wherein the microcontroller comprises an encoding module, a decoding module, a storage module and a storage control module; the storage control module is respectively connected with the coding module and the storage module and is used for transmitting the set-top-tone signal to be transmitted, which is stored in the storage module, to the coding module; the encoding module is used for encoding the set-top signal to be transmitted and outputting the encoded set-top signal to the optical transceiver; the decoding module is connected with the storage control module and is used for demodulating an external tune-up signal received by the optical transceiver and transmitting the demodulated external tune-up signal to the storage module through the storage control module; the invention can realize the function of receiving and transmitting the set-top signal of the microcontroller and can effectively avoid the conflict between the optical module and the set-top signal when the optical module is communicated with the host I2C.
Drawings
Fig. 1 is a block diagram of a tuner signal transmission system based on a microcontroller according to the present invention;
fig. 2 is a block diagram of a microcontroller in the tuner signal transmission system based on a microcontroller according to the present invention;
fig. 3 is a block diagram of the structure of an encoding module and a decoding module in the set-top signal transmission system based on the microcontroller according to the present invention;
FIG. 4 is a flow chart of the operation of the tuner signal transmission system according to the present invention;
fig. 5 is a flowchart of a method for transmitting a set-top signal based on a microcontroller according to the present invention.
Detailed Description
The invention aims to provide a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller, which can effectively solve the problem that the conflict exists between I2C communication between an optical module and a host and a set-top signal.
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2 together, the system for transmitting a set top signal based on a microcontroller 21 provided by the present invention includes a host 10, an optical module 20 and an optical fiber 30, wherein the host 10 is in communication connection with the optical module 20, and the optical module 20 is in communication connection with the optical module 20; wherein, optical module 20 includes microcontroller 21 and optical transceiver 22, microcontroller 21 includes coding module 210, decoding module 220, storage module 230 and storage control module 240, microcontroller 21 with host computer 10 with optical transceiver 22 communication connection, optical transceiver 22 with optic fibre 30 communication connection, storage control module 240 respectively with coding module 210 with storage module 230 is connected, decoding module 220 with storage control module 240 connects.
The storage control module 240 is configured to transmit the to-be-transmitted set-top-tone signal stored in the storage module 230 to the encoding module 210, where the encoding module 210 is configured to encode the to-be-transmitted set-top-tone signal and output the encoded signal to the optical transceiver 22, the optical transceiver 22 performs set-top-tone operation, and then injects the set-top-tone optical signal into the optical fiber 30 for transmission; the decoding module 220 is configured to demodulate the external tune-up signal received by the optical transceiver 22, transmit the demodulated external tune-up signal to the storage module 230 through the storage control module 240 for storage, and process the received external tune-up signal stored in the storage module 230 after the main control module 250 is idle, where the main control module 250 in this embodiment is a CPU in the microcontroller 21, that is, when a tune-up signal data packet is sent from the outside, the storage control module 240 transmits the demodulated external tune-up signal to the storage module 230 for storage, and does not need the participation of the CPU, so that collision between 12C communication between the optical module 20 and the host 10 and the tune-up signal is avoided.
Further, the storage control module 240 includes at least one sending channel and at least one receiving channel, where the sending channel is used to transmit the set-top-tone signal to be sent stored in the storage module 230 to the encoding module 210; the receiving channel is configured to transmit the external set-top signal output by the decoding module 220 to the storage module 230, where the sending channel and the receiving channel may work in parallel, for example, one sending channel is responsible for transmitting the set-top signal to be sent to the encoding module 210, and the other receiving channel is responsible for moving the external set-top signal demodulated by the decoding module 220 to a position specified by the storage module 230 for storage; specifically, the storage control module 240 is a DMA control module, that is, a direct memory access control unit, and the storage control module 240, the encoding module 210, and the decoding module 220 are arranged, so that the transceiver function of the set-top signal of the microcontroller 21 can be completed without the involvement of a CPU, and the optical module 20 is prevented from colliding with the set-top signal when performing I2C communication with the host 10.
Further, with reference to fig. 2, in the present embodiment, the microcontroller 21 further includes a transmission bus, where the transmission bus includes a first bus 261 and a second bus 262; the first bus 261 is configured to receive the first set-top data sent by the host 10, and the second bus 262 is configured to read digital diagnostic information of the optical transceiver 22, where the set-top signal to be sent in this embodiment includes the first set-top data in the set-top signal sent by the host 10, the second set-top data in the external set-top signal, and the digital diagnostic information; wherein, the first bus 261 is a Slave I2C, the microcontroller 21 needs to receive a control command issued by the system host 10 and a transmitted set-top signal through a Slave I2C at any time, and the interrupt priority of the Slave I2C is the highest; the second bus 262 is a Master I2C, the Master I2C is used for communication between the microcontroller 21 and the optical transceiver 22, and can actively read digital diagnostic information from the optical transceiver 22, the digital diagnostic information includes five monitoring amounts, i.e., a supply voltage, a temperature, a laser bias current, a transmitting optical power, and a receiving optical power, and the five monitoring amounts may change at any time.
Further, referring to fig. 3, the encoding module 210 includes a set-top signal encoder, which includes a first data register, a first shift register, and a first control register; the first control register and the first data register are respectively connected with a first shift register, specifically, the first data register is a transmission data register, the first shift register is a transmission shift register, the first control register is a transmission baud rate control register, and the set-top signal encoder performs parallel-to-serial conversion and transmission on received set-top signals to be transmitted, namely parallel data to be transmitted according to the configured bit width, so as to complete the transmission work of the set-top signals.
Further, the decoding module 220 comprises a set-top signal decoder, which comprises a second data register, a second shift register and a second control register; the second control register is connected with the second shift register, and the second shift register is also connected with the second data register; in this embodiment, the set-top signal decoder performs waveform shaping, frame detection, frame sampling, serial-to-parallel conversion and verification on an external set-top signal received and transmitted by an optical transceiver, and then sequentially transmits second set-top data in a frame of the external set-top signal to a specified position in the storage module 230 under the condition that the CPU does not participate, and performs processing after the CPU is idle, so as to avoid collision between the I2C communication of the optical module 20 and the host 10 and the set-top signal.
Further, please continue to refer to fig. 2, in the embodiment, the storage module 230 includes a random access memory RAM, and after the receiving channel receives the data analyzed by the decoding module 220, the output is moved to a designated location of the random access memory RAM for storage, so as to facilitate processing when the CPU is idle; the random access memory RAM may also store data information sent from the host 10.
Further, in this embodiment, the storage module 230 further includes a FLASH memory, which is a long-life nonvolatile (capable of maintaining stored data information in case of power failure), and the data deletion is not in units of single bytes, but in units of fixed blocks, and may be used to store digital diagnostic information.
Further, please refer to fig. 4 together for better understanding the working principle of the set-top signal transmission system based on the microcontroller 21 provided by the present invention, the working process of the set-top signal transmission system based on the microcontroller 21 provided by the present invention is described in detail according to the application embodiment, that is, the working steps of the set-top signal transmission system based on the microcontroller 21 are as follows:
s10, initializing the Slave I2C;
s20, Master I2C initialization;
s30, initializing an encoding module and a decoding module;
s40, initializing a storage control module;
s50, enabling the interrupt priority;
s60, judging whether the Slave I2C receives a set top signal sent by the host, if so, performing S70, and if not, performing S70;
s70, judging whether the storage control module receives an external tune signal, if so, performing S80, and if not, performing S80;
s80, Master I2C reads the digital diagnosis information;
and S90, starting the storage control module to send a set-top signal to be sent.
When the host 10 is powered on, initialization setting is performed, first, after the first bus 261 and the second bus 262 are initialized, the encoding module 210 and the decoding module 220 are initialized, then, interrupt priority enabling is performed, interrupt priority is set, and the I2C Slave priority is set to be the highest; then detecting whether I2C Slave receives the latest tune-to-top signal sent by the host 10, if not, using the first tune-to-top data in the original tune-to-top signal; then, it is detected whether the receiving channel in the storage control module 240 receives the external tune-up signal from the decoding module 220, if not, the second tune-up data of the original external tune-up signal is used; actively reading digital diagnostics information from the optical transceiver 22 by the Master I2C; after acquiring each piece of data information, performing data fusion and packaging on the first set top data, the second set top data and the digital diagnostic information, and sequentially transmitting the data to the encoding module 210 for encoding and then transmitting the data out through a transmitting channel of the storage control module 240 according to a certain frame format without the participation of a CPU (central processing unit); the modulated signal after parallel-to-serial conversion by the encoding module 210 is applied to the optical transceiver 22 for modulation, and then the modulated optical signal is injected into the optical fiber 30 for transmission; then, starting a receiving channel in the storage control module 240, the microcontroller 21 waits for receiving a set-top signal sent by the other party at any time, decoding the set-top signal and receiving data, sequentially transmitting a frame of set-top data to the storage module 230 without the participation of the CPU, and processing the frame of set-top data after waiting for the idle CPU, thereby realizing the set-top signal transceiving function of the microcontroller 21 and avoiding the collision between the I2C communication of the optical module 20 and the host 10 and the set-top signal.
The first bus 261, i.e. I2C Slave terminal service program, is: entering an I2C Slave terminal service program, then judging whether the host 10 is in read operation or write operation, if the host 10 is in read operation, the microcontroller 21 outputs the data which is specified to be read by the host 10 to the I2C bus for reading; if the host 10 is a write operation, the microcontroller 21 saves the data written by the host 10 in a predetermined RAM. After the data writing is finished, a flag bit is set, and after the interrupt service program is launched, the flag bit is used for inquiring of the main program.
The invention also correspondingly provides a microcontroller, which comprises an encoding module, a decoding module, a storage module and a storage control module, wherein the storage control module is respectively connected with the encoding module and the storage module, and the decoding module is connected with the storage control module.
Further, the present invention also provides a method for transmitting a set-top signal based on a microcontroller, referring to fig. 5, the method for transmitting a set-top signal based on a microcontroller includes the following steps:
s100, the storage control module transmits the signal to be transmitted, stored in the storage module, to the coding module;
s200, the coding module encodes the set-top signal to be sent and outputs the encoded set-top signal to the optical transceiver;
s300, the decoding module demodulates the external tune-top signal received by the optical transceiver and outputs the demodulated external tune-top signal to the storage control module;
s400, the storage control module transmits the external tune-up signal output by the decoding module to the storage module.
In summary, the invention provides a method, a system and a microcontroller for transmitting a set-top signal based on the microcontroller, wherein the microcontroller comprises an encoding module, a decoding module, a storage module and a storage control module; the storage control module is respectively connected with the coding module and the storage module and is used for transmitting the set-top-tone signal to be transmitted, which is stored in the storage module, to the coding module; the encoding module is used for encoding the set-top signal to be transmitted and outputting the encoded set-top signal to the optical transceiver; the decoding module is connected with the storage control module and is used for demodulating an external tune-up signal received by the optical transceiver and transmitting the demodulated external tune-up signal to the storage module through the storage control module; the invention can realize the function of receiving and transmitting the set-top signal of the microcontroller and can effectively avoid the conflict between the optical module and the set-top signal when the optical module is communicated with the host I2C.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (8)
1. A microcontroller is characterized by comprising an encoding module, a decoding module, a storage module and a storage control module; the storage control module is respectively connected with the coding module and the storage module and is used for transmitting the set-top-tone signal to be transmitted, which is stored in the storage module, to the coding module; the encoding module is used for encoding the set-top signal to be transmitted and outputting the encoded set-top signal to the optical transceiver; the decoding module is connected with the storage control module and is used for demodulating an external tune-up signal received by the optical transceiver and transmitting the demodulated external tune-up signal to the storage module through the storage control module; the set top box signal to be sent comprises first set top box data sent by a host, second set top box data in an external set top box signal and digital diagnostic information; the microcontroller further comprises a transmission bus comprising a first bus and a second bus; the first bus is used for receiving the first tuning data sent by a host, and the second bus is used for reading the digital diagnostic information of the optical transceiver.
2. The microcontroller according to claim 1, wherein the memory control module comprises at least one transmit channel and at least one receive channel, the transmit channel is configured to transmit the set-top-signal to be transmitted stored in the memory module to the encoding module; the receiving channel is used for transmitting the external tune-top signal output by the decoding module to the storage module.
3. The microcontroller of claim 1 wherein the encoding module comprises a set-top signal encoder comprising a first data register, a first shift register, and a first control register; the first control register and the first data register are respectively connected with the first shift register.
4. The microcontroller of claim 1 wherein the decode module comprises a set-top signal decoder comprising a second data register, a second shift register, and a second control register; the second control register is connected with the second shift register, and the second shift register is also connected with the second data register.
5. A method for transmitting a set top signal based on the microcontroller according to any one of claims 1-4, characterized by comprising the following steps:
the storage control module transmits the signal to be sent to the set top box, which is stored in the storage module, to the coding module;
the encoding module encodes the set-top signal to be transmitted and outputs the encoded set-top signal to the optical transceiver;
the decoding module demodulates an external tune-top signal received by the optical transceiver and outputs the demodulated external tune-top signal to the storage control module;
and the storage control module transmits the external tune-top signal output by the decoding module to the storage module.
6. The method for transmitting a set top signal according to claim 5, wherein the step of the storage control module transmitting the set top signal to be transmitted stored in the storage module to the encoding module comprises: and the sending channel transmits the set-top signal to be sent to the coding module.
7. The method for transmitting the set top signal according to claim 5, wherein the step of the storage control module transmitting the external set top signal outputted from the decoding module to the storage module comprises: and the receiving channel transmits the external tune-top signal output by the decoding module to the storage module.
8. A set-top signal transmission system based on the microcontroller of any one of claims 1-4, comprising a host, an optical module and an optical fiber, wherein the optical module comprises the microcontroller and the optical transceiver.
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| CN113206720B (en) * | 2021-04-08 | 2022-02-15 | 江苏科大亨芯半导体技术有限公司 | Method and device for realizing top-tuning message channel |
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