CN209710123U - The data transmission system of high-speed transfer FOTA firmware updating packet - Google Patents
The data transmission system of high-speed transfer FOTA firmware updating packet Download PDFInfo
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- CN209710123U CN209710123U CN201920838866.8U CN201920838866U CN209710123U CN 209710123 U CN209710123 U CN 209710123U CN 201920838866 U CN201920838866 U CN 201920838866U CN 209710123 U CN209710123 U CN 209710123U
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Abstract
The utility model relates to a kind of data transmission systems of high-speed transfer FOTA firmware updating packet, comprising: on-vehicle information module, data transmission module, instrumentation module；Wherein the on-vehicle information module is suitable for that FOTA firmware updating packet is transmitted to the instrumentation module by the data transmission module, to be shown；The utility model realizes the function of high-speed transfer FOTA firmware updating packet between on-vehicle information module and instrumentation module by the video channel in FPD-Link III harness in data transmission module, transmission rate is more than 1.5Gbs, it can be realized high-speed transfer FOTA firmware updating packet, and it is not take up the bandwidth of vehicle line, hardware cost is greatly saved.
Description
Technical field
The utility model relates to a kind of automotive electronics accessories field more particularly to a kind of high-speed transfer FOTA firmware updating packets
Data transmission system.
Background technique
With the gradually development of auto industry, the function of automobile instrument and vehicle-mounted information and entertainment system becomes increasingly abundant, the two
Between carry out information exchange demand it is also more and more, especially by the data information transfer in vehicle-mounted information and entertainment system to instrument
It is shown in table.In the prior art be usually between vehicle-mounted information and entertainment system and instrument be arranged LVDS, IIC signal wire and
CAN bus, such vehicle-mounted information and entertainment system can be transmitted video by LVDS signal wire and be upgraded by CAN bus transmission solid
The information such as part packet are to instrument.However CAN bus transmission rate is relatively low, such as 80Mbyte firmware updating packet is general with CAN bus
500kbps speed rates when, time-consuming is about 1280s, and 1280s much can not meet real vehicle demand.In a small number of technologies
There are FPD-Link III harness is arranged between vehicle-mounted information and entertainment system and instrument, by FPD-Link III harness
SPI channel transfer firmware updating packet, SPI channel transfer rate is only 200kbps, it can be seen that, existing vehicle entertainment system
Connection framework between instrument haves the defects that firmware updating packet transmission rate is too low, thus influences the using effect of product
And cause user experience poor.
Therefore, need to develop the data transmission system and transmission side data of a kind of new high-speed transfer FOTA firmware updating packet
Method, to solve the above problems.
Utility model content
The purpose of the utility model is to provide the data transmission systems and data of a kind of high-speed transfer FOTA firmware updating packet
Transmission method.
In order to solve the above-mentioned technical problem, the utility model provides a kind of data of high-speed transfer FOTA firmware updating packet
Transmission system comprising: on-vehicle information module, data transmission module, instrumentation module；Wherein the on-vehicle information module is suitable for logical
It crosses the data transmission module and FOTA firmware updating packet is transmitted to the instrumentation module, to be shown.
Further, the on-vehicle information module include: car entertainment processing module, with the data transmission module electrical property phase
LVDS serializer even；The car entertainment processing module is suitable for exporting data information by the LVDS serializer.
Further, the instrumentation module includes: that meter processor module and the data transmission module are electrical connected
LVDS deserializer；The LVDS deserializer is suitable for receiving the data information that the data transmission module issues, and is transmitted to described
Meter processor module.
Further, the data transmission module includes: FPD-Link III harness；The FPD-Link III harness is suitable for
Carry out information transmission.
Further, the FPD-Link III harness includes: two paths；Wherein channel transfer HD video is believed all the way
Number, another way channel transfer SPI signal.
On the other hand, the utility model provides a kind of data transmission method of high-speed transfer FOTA firmware updating packet, packet
Include: car entertainment processing module exports data information to FPD-Link III harness by VDS serializer；LVDS unstrings
Device receives the data information that FPD-Link III harness issues, and is transmitted to meter processor module.
Further, after the car entertainment processing module issues complete 1 frame data, the car entertainment processing module is logical
The video channel signals line crossed in FPD-Link III harness need to read data fifo letter to meter processor module transmission
Number；After the data transfer is complete, the car entertainment processing module is to the meter processor for the car entertainment processing module
Module sends data and is transmitted signal.
Further, after the meter processor module detects that the car entertainment processing module data are transmitted,
The meter processor module control data receiver interrupts, and saves data fifo；After the data transfer is complete, at the instrument
The integrality of device module verification current frame data is managed, and check results are fed back into the car entertainment processing module；The instrument
List processing device module carries out data update after the completion of verifying to data fifo.
Further, when the car entertainment processing module receives the current frame data that the meter processor module issues
When complete signal, the car entertainment processing module sends next frame data；If the car entertainment processing module receives institute
The endless entire signal of current frame data of meter processor module sending is stated, the car entertainment processing module retransmits present frame
Data.
Further, the data transmission method is suitable for using such as above-mentioned data transmission system.
The utility model has the beneficial effects that the utility model passes through in FPD-Link III harness in data transmission module
Video channel realize the function of high-speed transfer FOTA firmware updating packet between on-vehicle information module and instrumentation module, transmission rate
More than 1.5Gbs, high-speed transfer FOTA firmware updating packet can be realized, and be not take up the bandwidth of vehicle line, be greatly saved hard
Part cost.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the functional block diagram of the data transmission system of the high-speed transfer FOTA firmware updating packet of the utility model；
Fig. 2 is the flow chart of the data transmission method of the utility model.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
Embodiment 1
Fig. 1 is the functional block diagram of the data transmission system of the high-speed transfer FOTA firmware updating packet of the utility model.
In the present embodiment, as shown in Figure 1, present embodiments providing a kind of data of high-speed transfer FOTA firmware updating packet
Transmission system comprising: on-vehicle information module, data transmission module, instrumentation module；Wherein the on-vehicle information module is suitable for logical
It crosses the data transmission module and FOTA firmware updating packet is transmitted to the instrumentation module, to be shown.
In the present embodiment, the present embodiment is real by the video channel in FPD-Link III harness in data transmission module
The function of high-speed transfer FOTA firmware updating packet between existing on-vehicle information module and instrumentation module, transmission rate is more than 1.5Gbs,
It can be realized high-speed transfer FOTA firmware updating packet, and be not take up the bandwidth of vehicle line, hardware cost is greatly saved.
In order to which on-vehicle information module can export data information, the on-vehicle information module includes: car entertainment
Processing module, the LVDS serializer being electrical connected with the data transmission module；The car entertainment processing module is suitable for count
It is believed that breath is exported by the LVDS serializer.
In the present embodiment, as an implementation, car entertainment processing module can use but be not limited to STM32
Series processors, LVDS serializer can use but be not limited to DS90UB948 type LVDS serializer.
In order to which instrumentation module can receive data information, the instrumentation module includes: meter processor module and the number
The LVDS deserializer being electrical connected according to transmission module；The LVDS deserializer is suitable for receiving the number that the data transmission module issues
It is believed that breath, and it is transmitted to the meter processor module.
In the present embodiment, as an implementation, meter processor module can use but be not limited to STM32 system
Column processor, LVDS deserializer can use but be not limited to DS90UB940 type LVDS deserializer.
In order to realize the function of high-speed transfer FOTA firmware updating packet between on-vehicle information module and instrumentation module, institute
Stating data transmission module includes: FPD-Link III harness；The FPD-Link III harness is adapted for information transmission.
In order to be not take up vehicle line when carrying high-speed transfer FOTA firmware updating packet between information module and instrumentation module
Bandwidth, the FPD-Link III harness includes: two paths；Wherein channel transfer high-definition video signal, another way are logical all the way
Transmit SPI signal in road.
In the present embodiment, it is logical for LVDS to be used for transmission the channel all the way of high-definition video signal for FPD-Link III harness
Road, it is the channel SPI that another way, which is used for transmission SPI signal,.
In the present embodiment, the video channel transmission rate that high-definition video signal is used for transmission in FPD-Link III is
1.5Gbs can be realized high-speed transfer FOTA firmware updating packet, and be not take up the bandwidth of vehicle line.
In the present embodiment, DS90UB948 type LVDS serializer passes through the solution string operation of DS90UB940 type LVDS deserializer
After have tri- channels SPI, IIC and LVDS, so as to control association by the SPI channel transfer of FPD-Link III harness
View, and pass through the channel the LVDS high-speed transfer FOTA firmware updating packet of FPD-Link III harness, harness transmission rate is
1.5Gbs had not only guaranteed the real-time of user's operation response, and but also had been not take up the bandwidth of vehicle line, be in addition also greatly saved hardware at
This.
Embodiment 2
Fig. 2 is the flow chart of the data transmission method of the utility model.
On the basis of embodiment 1, as shown in Fig. 2, the present embodiment provides a kind of high-speed transfer FOTA firmware updating packets
Data transmission method comprising: car entertainment processing module exports data information to FPD-Link by VDS serializer
III harness；LVDS deserializer receives the data information that FPD-Link III harness issues, and is transmitted to meter processor module.
In the present embodiment, LVDS serializer also passes through the GPIO of three road GPIO signal wires connection car entertainment processing module
Pin, LVDS deserializer connect the GPIO pin of meter processor module also by three road GPIO signal wires.Three road GPIO letter
The signal wire of GPIO all the way in number line is transmitted notice (being defined as frame_ready pin) as frame, in addition two-way GPIO
Signal wire is as transmission feedback (being defined as reply_clk pin, reply_dat pin).
In the present embodiment, the capacity of the FIFO buffer of car entertainment processing module and meter processor module is 256
Byte, it is also 256 bytes that the data frame that setting car entertainment processing module is transmitted is identical with the capacity of FIFO buffer.Therefore,
The FOTA firmware upgrade packet transmitted every time needs to split into multiple frames and is successively sent.
Specifically, the car entertainment processing module is logical after the car entertainment processing module issues complete 1 frame data
The video channel signals line crossed in FPD-Link III harness need to read data fifo letter to meter processor module transmission
Number；After the data transfer is complete, the car entertainment processing module is to the meter processor for the car entertainment processing module
Module sends data and is transmitted signal.
In the present embodiment, car entertainment processing module sends complete 1 frame data, all spreads out of to all data of 1 frame
Afterwards, car entertainment processing module notifies meter processor to read by the video channel signals line in FPD-Link III harness
Data fifo；When car entertainment processing module is standby, it is high level that car entertainment processing module, which drives frame_ready pin,
After frame data are transmitted, car entertainment processing module drives frame_ready pin to generate negative pulse (failing edge).
Specifically, after the meter processor module detects that the car entertainment processing module data are transmitted,
The meter processor module control data receiver interrupts, and saves data fifo；After the data transfer is complete, at the instrument
The integrality of device module verification current frame data is managed, and check results are fed back into the car entertainment processing module；The instrument
List processing device module carries out data update after the completion of verifying to data fifo.
In the present embodiment, pass through the GPIO transparent transmission function of LVDS serializer and LVDS deserializer, meter processor module
It is able to detect that the failing edge of frame ready pin, and generates reception and interrupt, in the interrupt handling function meter processor mould
Block reads data fifo in the memory headroom opened up in advance；FOTA upgrade package is broken down into multiframe sequence, successively from frame
Since buffer pin be transferred in meter processor module frame by frame 0 frame；After the data transfer ends, meter processor module
Verify the integrality of current frame data, and by check results by two GPIO pins (be defined as reply_clk pin,
Reply_dat pin) feed back to car entertainment processing module；When meter processor module is standby, meter processor module drive
Reply_clk pin be high level, if verification pass through, meter processor module be arranged reply_dat pin be high level after,
Reply_clk pin is driven to generate negative pulse (failing edge) again；If verification does not pass through, reply_ is arranged in meter processor module
Dat pin be low level after, then drive reply_clk pin generate negative pulse (failing edge)；It will be complete after the completion of verification
Upgrade job is completed in the burned flash of FOTA firmware updating packet.
Specifically, when the car entertainment processing module receives the current frame data that the meter processor module issues
When complete signal, the car entertainment processing module sends next frame data；If the car entertainment processing module receives institute
The endless entire signal of current frame data of meter processor module sending is stated, the car entertainment processing module retransmits present frame
Data.
In the present embodiment, by the GPIO transparent transmission function of LVDS serializer and LVDS deserializer, car entertainment handles mould
Block is able to detect that the failing edge of reply_dat pin, generates interruption, reads reply_clk pin in the interrupt handling function
State；If reply_dat pin is high level, which is received successfully, and car entertainment processing module starts to send next frame；
If reply_dat pin be low level, the frame reception failure, car entertainment processing module start repeat send present frame.
Specifically, the data transmission method is suitable for using the data transmission system as provided by embodiment 1.
In the present embodiment, data transmission system has illustrated clear in embodiment 1.
In conclusion the utility model is realized by the video channel in FPD-Link III harness in data transmission module
The function of high-speed transfer FOTA firmware updating packet between on-vehicle information module and instrumentation module, transmission rate are more than 1.5Gbs, energy
It enough realizes high-speed transfer FOTA firmware updating packet, and is not take up the bandwidth of vehicle line, hardware cost is greatly saved；By institute
The LVDS serializer DS90UB948 used have after the solution string operation of LVDS deserializer DS90UB940 SPI, IIC and
Tri- channels LVDS, so as to pass through SPI channel transfer control protocol, and it is solid by the channel LVDS high-speed transfer FOTA upgrading
Part packet, harness transmission rate are 1.5Gbs, have not only guaranteed the real-time of user's operation response, but also be not take up the bandwidth of vehicle line, separately
Hardware cost is also greatly saved outside.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (5)
1. a kind of data transmission system of high-speed transfer FOTA firmware updating packet characterized by comprising
On-vehicle information module, data transmission module, instrumentation module；Wherein
The on-vehicle information module is suitable for that FOTA firmware updating packet is transmitted to the instrument mould by the data transmission module
Block, to be shown.
2. data transmission system as described in claim 1, which is characterized in that
The on-vehicle information module includes: car entertainment processing module, the LVDS being electrical connected with data transmission module string
Row device；
The car entertainment processing module is suitable for exporting data information by the LVDS serializer.
3. data transmission system as described in claim 1, which is characterized in that
The instrumentation module includes: meter processor module and the LVDS deserializer that the data transmission module is electrical connected；
The LVDS deserializer is suitable for receiving the data information that the data transmission module issues, and is transmitted to the instrument processing
Device module.
4. data transmission system as described in claim 1, which is characterized in that
The data transmission module includes: FPD-Link III harness；
The FPD-Link III harness is adapted for information transmission.
5. data transmission system as claimed in claim 4, which is characterized in that
The FPD-Link III harness includes: two paths；
Wherein channel transfer high-definition video signal all the way, another way channel transfer SPI signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920838866.8U CN209710123U (en) | 2019-06-04 | 2019-06-04 | The data transmission system of high-speed transfer FOTA firmware updating packet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920838866.8U CN209710123U (en) | 2019-06-04 | 2019-06-04 | The data transmission system of high-speed transfer FOTA firmware updating packet |
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| CN209710123U true CN209710123U (en) | 2019-11-29 |
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| CN201920838866.8U Active CN209710123U (en) | 2019-06-04 | 2019-06-04 | The data transmission system of high-speed transfer FOTA firmware updating packet |
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