CN108845967A - A kind of I2C bus analysis device - Google Patents
A kind of I2C bus analysis device Download PDFInfo
- Publication number
- CN108845967A CN108845967A CN201810721487.0A CN201810721487A CN108845967A CN 108845967 A CN108845967 A CN 108845967A CN 201810721487 A CN201810721487 A CN 201810721487A CN 108845967 A CN108845967 A CN 108845967A
- Authority
- CN
- China
- Prior art keywords
- bus
- data
- signal transmission
- transmission circuit
- computer equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0016—Inter-integrated circuit (I2C)
Abstract
The present invention relates to use for laboratory I2C bus analysis devices,Specifically disclose a kind of I2C bus analysis device,Including computer equipment,MCU data processor,Power module,And the I2C bus connection wire road being connected with the MCU data processor,Bluetooth signal transmission circuit,WIFI signal transmission circuit,USB driving circuit,TF memory card,LED light,Bluetooth signal transmission circuit is connect with Bluetooth antenna,WIFI signal transmission circuit is connect with WIFI antenna,USB driving circuit is connect with USB interface,Power module and MCU data processor,Bluetooth signal transmission circuit,WIFI signal transmission circuit,The power supply interface of TF memory card connects,The present invention can observe directly the data of I2C bus,And data can be filtered,Mark,A variety of processing such as preservation,Greatly facilitate the data analysis of I2C bus,Improve bus apparatus exploitation and testing efficiency,Hardware element is at low cost,Good reliability,Save a large amount of human resources and equipment requirement.
Description
Technical field
The present invention relates to laboratory bus analysis device, especially a kind of I2C bus analysis device.
Background technique
As automotive circuit diagram degree is higher and higher, the information interaction of each equipment of automobile is more frequent, automotive bus technology
Using also more and more extensive.I2C (Inter-Integrated Circuit) bus be one kind by PHILIPS company in 80 years
The twin wire universal serial bus of generation exploitation, for connecting microcontroller and its peripheral equipment.The most important advantage of I2C bus is its letter
Unisexuality and validity.
Laboratory and equipment are being developed without the device of support I2C bus analysis, filtering, mark completely in market at present
When the occasions such as test workshop need to analyze I2C bus, waveform is observed generally by oscillograph or logic analyser,
The method can only see waveform, can not directly complete observation arrive communicating pair data so that debugging very not intuitively, also can not be intuitive
It has been shown that, record, analysis I2C bus data.
Summary of the invention
In order to overcome the problems, such as it is existing can not intuitively show, record, analyze I2C bus data, the present invention provides one kind
I2C bus analysis device.
The technical solution adopted by the present invention is that：At a kind of I2C bus analysis device, including computer equipment and MCU data
Device is managed, it is characterized in that：It further include power module and the I2C bus connection wire road being connected with the MCU data processor, bluetooth
Signal transmitting and receiving circuit, WIFI signal transmission circuit, USB driving circuit, TF memory card, LED light, Bluetooth signal transmission circuit
It is connect with Bluetooth antenna, WIFI signal transmission circuit is connect with WIFI antenna, and USB driving circuit is connect with USB interface, power supply mould
Block is connect with the power supply interface of MCU data processor, Bluetooth signal transmission circuit, WIFI signal transmission circuit, TF memory card.
Preferably, the power module uses SPX3819 chip, 3.3V voltage is exported.
Data analysing method of the invention includes that steps are as follows：
S1 bus connection, MCU data processor by I/O interface connect with I2C bus connection wire road I2C bus SDA and
SCL route；
S2 connection computer equipment detects USB circuit connection if connectionless and opens bluetooth communication mode and WIFI
Communication pattern is established by bluetooth or WIFI and computer equipment and is wirelessly connected；
S3 sends data, and MCU data processor reads the data transmitted in bus, and is transferred to computer equipment or TF storage
Deposit card；
The processing of S4 bus data receives I2C bus data by the special-purpose software at computer equipment end, and to I2C bus
Data classified, screened, shown, saved；
The analysis of S5 bus data combines matched data and mark according to the mark condition that computer equipment inputs
Come, the data after display screening.
Preferably, the step S3, which sends data and specifically wraps, expands following sub-step：
S301.MCU data processor records the bus data received；
S302. plug-in analyzes bus behavior according to I2C protocol specification；
S303. data content is arranged according to bus behavior and be packaged；
S304. if any connection computer equipment, upload request is sent, if do not connect with computer equipment, data are saved
In TF memory card；
S305. upload license is received, data are uploaded.
The beneficial effects of the invention are as follows：The data of I2C bus can be observed directly, and data can be filtered,
A variety of processing such as mark, preservation greatly facilitate the data analysis of I2C bus, improve bus apparatus exploitation and test effect
Rate.Compare it is existing waveform is observed by oscillograph or logic analyser, firstly, the present invention be mass data communication analysis can
Row provides condition, simplifies the workload of technological development personnel, reduces working strength when test；It is marked using filtering
Etc. functions, cumbersome operation will be repeated and give computer, the time that technological development personnel analyze data has been saved, improved analysis
Efficiency brings more convenient and fast method for debugging.The hardware element cost that the present invention uses is relatively low, good reliability, significantly
The equipment needs for saving experiment and test, save a large amount of human and material resources.
Detailed description of the invention
Fig. 1 is circuit diagram of the invention.
Fig. 2 is reading equipment work flow diagram of the invention.
Fig. 3 is PC software flow pattern of the invention.
Specific embodiment
Referring to Fig. 1, the present invention include include computer equipment, MCU data processor, power module, and with the MCU
The connected I2C bus connection wire road of data processor, Bluetooth signal transmission circuit, WIFI signal transmission circuit, USB driving electricity
Road, TF memory card, LED light, Bluetooth signal transmission circuit are connect with Bluetooth antenna, WIFI signal transmission circuit with WIFI days
Line connection, USB driving circuit are connect with USB interface, power module and MCU data processor, Bluetooth signal transmission circuit, WIFI
The power supply interface connection of signal transmitting and receiving circuit, TF memory card.
MCU data processor uses STM32 family chip, and computing capability is stronger, and program library is abundant, is appropriate for data reading
Take analysis.
Power module uses SPX3819 chip, inputs 5V voltage by USB interface energization pins, exports 3.3V voltage.
LED light is by MCU data processor controlled, for showing working condition of the invention.
The present invention uses a single-chip microcontroller as data and catches packet unit, is parallel to bus by common connecting line or probe
On, it is connected on computer using wireless network or USB line road, hardware element cost is relatively low, and reality is greatly saved in good reliability
Test the equipment needs with test.
Referring to figs. 2 and 3, the present invention monitors bus waveform variation by the general purpose I/O of MCU, according to I2C protocol specification, divides
Analyse the behavior of I2C bus.All bus behaviors packing is uploaded into computer by wireless network (wifi or bluetooth) or USB data line
Host, the filter condition (such as bus address reads and writes behavior, data characteristic) that computer is set by user, filters out user and thinks
The data wanted, also, user can mark given data, and computer is according to mark set by user and data format progress
It is right, mark and data are saved together.The present invention greatly facilitates the data analysis of I2C bus, improves bus apparatus and opens
Hair and testing efficiency, simplify the workload of technological development personnel, reduce working strength when test, saved technological development
Personnel analyze the time of data, improve analysis efficiency, bring more convenient and fast method for debugging.
Specific step is as follows for implementation method of the invention：
S1 bus connection, MCU data processor by I/O interface connect with I2C bus connection wire road I2C bus SDA and
SCL route；
S2 connection computer equipment detects USB circuit connection if connectionless and opens bluetooth communication mode and WIFI
Communication pattern is established by bluetooth or WIFI and computer equipment and is wirelessly connected；
S3 sends data, and MCU data processor reads the data transmitted in bus, and is transferred to computer equipment or TF storage
Deposit card；
The processing of S4 bus data receives I2C bus data by the special-purpose software at computer equipment end, and to I2C bus
Data classified, screened, shown, saved；
The analysis of S5 bus data combines matched data and mark according to the mark condition that computer equipment inputs
Come, the data after display screening.
Wherein, step S3, which is specifically wrapped, expands following sub-step：
S301.MCU data processor records the bus data received；
S302. plug-in analyzes bus behavior according to I2C protocol specification；
S303. data content is arranged according to bus behavior and be packaged；
S304. if any connection computer equipment, upload request is sent, if do not connect with computer equipment, data are saved
In TF memory card；
S305. upload license is received, data are uploaded.
Claims (4)
1. a kind of I2C bus analysis device, including computer equipment and MCU data processor, it is characterized in that：It further include power supply mould
Block and the I2C bus connection wire road being connected with the MCU data processor, Bluetooth signal transmission circuit, WIFI signal transmitting-receiving
Circuit, USB driving circuit, TF memory card and LED light, Bluetooth signal transmission circuit are connect with Bluetooth antenna, WIFI signal
Transmission circuit is connect with WIFI antenna, and USB driving circuit is connect with USB interface, power module respectively with MCU data processor,
The power supply interface connection of Bluetooth signal transmission circuit, WIFI signal transmission circuit, TF memory card.
2. a kind of I2C bus analysis device according to claim 1, it is characterized in that：The power module uses
SPX3819 chip exports 3.3V voltage.
3. a kind of I2C bus analysis device according to claim 1 or 2, it is characterized in that：The analysis side of the analytical equipment
Method includes step：
The connection of S1 bus, MCU data processor connect the SDA and SCL of I2C bus by I/O interface with I2C bus connection wire road
Route；
S2 connection computer equipment detects USB circuit connection, if connectionless, opens bluetooth communication mode and WIFI communication
Mode is established by bluetooth or WIFI and computer equipment and is wirelessly connected；
S3 sends data, and MCU data processor reads the data transmitted in bus, and is transferred to computer equipment or TF storage
Card；
The processing of S4 bus data receives I2C bus data by the special-purpose software at computer equipment end, and to the number of I2C bus
According to being classified, screened, shown, saved；
The analysis of S5 bus data combines matched data and mark according to the mark condition that computer equipment inputs, and shows
Data after showing screening.
4. a kind of I2C bus analysis device according to claim 3, it is characterized in that：The step S3 sends data tool
Body packet expands following sub-step：
S301.MCU data processor records the bus data received；
S302. plug-in analyzes bus behavior according to I2C protocol specification；
S303. data content is arranged according to bus behavior and be packaged；
S304. if any connection computer equipment, upload request is sent, if do not connect with computer equipment, data are stored in TF
In memory card；
S305. upload license is received, data are uploaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721487.0A CN108845967A (en) | 2018-07-03 | 2018-07-03 | A kind of I2C bus analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721487.0A CN108845967A (en) | 2018-07-03 | 2018-07-03 | A kind of I2C bus analysis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108845967A true CN108845967A (en) | 2018-11-20 |
Family
ID=64200428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810721487.0A Pending CN108845967A (en) | 2018-07-03 | 2018-07-03 | A kind of I2C bus analysis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108845967A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110347139A (en) * | 2019-05-22 | 2019-10-18 | 苏州浪潮智能科技有限公司 | A kind of test fixture of I2C bus |
| CN111291443A (en) * | 2018-12-07 | 2020-06-16 | 广州汽车集团股份有限公司 | Automatic generation method, device, equipment and storage medium for I/O module model of vehicle control unit software |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694082A (en) * | 2005-05-26 | 2005-11-09 | 海信集团有限公司 | Radio transmission system of I2C bus data |
| CN101630299A (en) * | 2009-05-27 | 2010-01-20 | 东南大学 | Analysis and trigger method of I2C serial bus signal |
| CN201812250U (en) * | 2010-10-08 | 2011-04-27 | 顾群 | Portable wireless keyboard |
| CN203276265U (en) * | 2013-01-07 | 2013-11-06 | 黄维翼 | I2C (bus testing device based on USB (universal serial bus) interface |
| CN103942171A (en) * | 2014-04-04 | 2014-07-23 | 广东翼卡车联网服务有限公司 | TF card with communication function |
| US20170324606A1 (en) * | 2016-05-09 | 2017-11-09 | DataMetrex Limited | Serial communications tap device |
-
2018
- 2018-07-03 CN CN201810721487.0A patent/CN108845967A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694082A (en) * | 2005-05-26 | 2005-11-09 | 海信集团有限公司 | Radio transmission system of I2C bus data |
| CN101630299A (en) * | 2009-05-27 | 2010-01-20 | 东南大学 | Analysis and trigger method of I2C serial bus signal |
| CN201812250U (en) * | 2010-10-08 | 2011-04-27 | 顾群 | Portable wireless keyboard |
| CN203276265U (en) * | 2013-01-07 | 2013-11-06 | 黄维翼 | I2C (bus testing device based on USB (universal serial bus) interface |
| CN103942171A (en) * | 2014-04-04 | 2014-07-23 | 广东翼卡车联网服务有限公司 | TF card with communication function |
| US20170324606A1 (en) * | 2016-05-09 | 2017-11-09 | DataMetrex Limited | Serial communications tap device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111291443A (en) * | 2018-12-07 | 2020-06-16 | 广州汽车集团股份有限公司 | Automatic generation method, device, equipment and storage medium for I/O module model of vehicle control unit software |
| CN110347139A (en) * | 2019-05-22 | 2019-10-18 | 苏州浪潮智能科技有限公司 | A kind of test fixture of I2C bus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10955461B2 (en) | Smart and efficient protocol logic analyzer configured within automated test equipment (ATE) hardware | |
| CN103412562B (en) | Automotive universal Diagnostic Test Set | |
| US20200033408A1 (en) | Method and system for acquisition of test data | |
| US7225357B2 (en) | SDIO card development system | |
| CN108475227A (en) | Test functional component and data debugging method | |
| CN203260029U (en) | System chip prototype verification debugging device based on field programmable gate array (FPGA) | |
| CN105372619B (en) | A kind of safety chip power failure test equipment | |
| CN108845967A (en) | A kind of I2C bus analysis device | |
| CN103365689A (en) | Singlechip parallel burning method | |
| CN107015896B (en) | Embedded equipment CPU and peripheral state real-time monitoring method and system thereof | |
| CN204789908U (en) | Circuit board automatic test system based on labVIEW | |
| CN107678984A (en) | USB port mapping method and computer-readable recording medium | |
| WO2016184170A1 (en) | Smi interface device debugging apparatus and method, and storage medium | |
| CN203276265U (en) | I2C (bus testing device based on USB (universal serial bus) interface | |
| CN102591835B (en) | Portable downloader | |
| CN112114899A (en) | Chip debugging system and debugger | |
| TWI420318B (en) | A non-intrusive general-purpose common busbar switching device | |
| CN104572515B (en) | Tracking module, method, system and on-chip system chip | |
| CN107704417A (en) | The method and its communication system to be communicated with equipment under test | |
| CN115454903A (en) | Automatic interface plugging and unplugging control device and method | |
| CN109582571A (en) | On-line debugging method, apparatus, debugging slave, debugging host and system | |
| CN201278146Y (en) | ATA interface signal capturing apparatus implemented based on FPGA | |
| CN109254937B (en) | USB hub, USB device enumeration exception detection method and computer storage medium | |
| CN112970005A (en) | WIFI programming debugger for microcontroller and method thereof | |
| CN201167331Y (en) | Interface case for real time monitoring bidirectional data transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 528000 No. 25-8 (F1) five, 501, C, southwest garden, Sanshui center, Foshan, Guangdong. Applicant after: Faurecia electronic (Foshan) Co., Ltd Address before: 528000 No. 25-8 (F1) five, 501, C, southwest garden, Sanshui center, Foshan, Guangdong. Applicant before: Guangdong good helper Global Technology Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181120 |
|
| RJ01 | Rejection of invention patent application after publication |