EP1399831B1 - Vorrichtung und verfahren zur umsetzung einer diagnoseschnittstelle auf standard-spi - Google Patents
Vorrichtung und verfahren zur umsetzung einer diagnoseschnittstelle auf standard-spi Download PDFInfo
- Publication number
- EP1399831B1 EP1399831B1 EP02754180A EP02754180A EP1399831B1 EP 1399831 B1 EP1399831 B1 EP 1399831B1 EP 02754180 A EP02754180 A EP 02754180A EP 02754180 A EP02754180 A EP 02754180A EP 1399831 B1 EP1399831 B1 EP 1399831B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- data
- input
- electronic unit
- microprocessor
- unit
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 10
- 230000004913 activation Effects 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000721631 Nymphicus hollandicus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
Definitions
- the invention relates to a device and a method to convert a diagnostic interface to standard SPI.
- Control units in motor vehicles are for example for Control of external control unit ignition stages used.
- the control units are usually from controlled by a microprocessor.
- a microprocessor To be a faultless Ensure it is necessary to run a. Perform functional monitoring, i. status messages or read diagnostic information of the control unit, evaluate and, where appropriate, appropriate thereafter To take action.
- From DE 40 32 926 A1 discloses a device for testing a motor vehicle test system known.
- This device contains a test device as well as a mobile one Diagnostic device operating at an interface with each other are connectable. Furthermore, a tester provided in place of the diagnostic device on the Interface with the test device is connectable.
- the described device provides a simple Device for testing a motor vehicle system allows the user to make a statement about whether an error in the diagnostic device or within the Test device is present.
- EP 0 477 309 B1 a device for the Function monitoring of a trained as power amplifier electrical switch, its connected Consumer, his control and the associated Connection cables described.
- the device has at least one parallel to the final stage switched error detection logic on.
- the connection point between the switch and the consumer is using a Reference potential acted upon.
- the Error detection logic the potentials of the input and Output terminal of the output stage as well as the reference potential applied.
- the error detection logic distinguishes, starting from the applied potentials, between the Short circuit to positive pole, load drop and Short circuit to ground.
- the diagnostic information in case of short circuit or load drop of contained in ECUs electronic units or ICs could so far have a serial interface can be read out.
- the conventional diagnostic interface has a Data input, a data output, an input for the Clock signal (CLK) and an input for synchronization (SYNC).
- CLK Clock signal
- SYNC input for synchronization
- the SPI interface (serial peripheral interface) allows, for example, the communication between a microprocessor and an electronic unit, such as an IC.
- the electronic unit through the microprocessor with a so-called slaveselect (SS) begins the communication.
- SS slaveselect
- the synchronization input is "low" set to start communication.
- the clock signal (CLK) is applied, with the the data transfer is synchronized.
- the data input the electrical unit is powered by MOSI (mater out slave in) and the data output with MISO (master in slave out) designated.
- the SPI interface of microcontrollers or microprocessors supported. Sending and receiving is done by Writing and reading registers.
- the operation of the diagnostic interface either leads to Programming of queues to the bit times to comply with or in the operation in e.g. 1 ms grid too one function call per bit. This binds very many Microprocessor resources, which of course avoided shall be.
- the diagnostic office used is located in Control unit and serves in the event of an error, the one with a Repair entrusted workshop assistance to the Troubleshooting. Furthermore, already during the ride will respond to errors. Errors detected are, for example, errors in the gasoline injection. So can, for example, the gasoline injection for a cylinder be hidden if it is found that for this no spark is generated. Another possibility represents the fading of the lambda control.
- the diagnostic interface has a data input for this, a data output, an input for the clock signal and an input for synchronization.
- the protocol of the diagnostic interface is the protocol very similar to the SPI interface. So will with the Synchronization line (SYNC) at the Diagnostic interface or the slave select signal (SS) the SPI interface addressed the building block and it the diagnostic registers are stored or output.
- SYNC Synchronization line
- SS slave select signal
- the data output of the diagnostic interface gives as MISO at the SPI the data to the microprocessor.
- the data input of the diagnostic interface is different but from the MOSI of the SPI interface.
- the Data input of the diagnostic interface for cascading different slave blocks, should with the MOSI Data from the microprocessor into the slave module (s) to be written. This function was available for blocks not with the diagnostic interface.
- the output on ICs with diagnostic interface is open collector. Therefore, at the data output the electronic unit provided a pull-up resistor be, if due to the baud rate of the logic level on Data input is insufficient or does not exist.
- the SPI interface is usually 2 to 5 Mbaud designed. Many ICs with diagnostic interface are only on 500kBaud designed. Therefore, if necessary, when accessing on the diagnostic interface, the baud rate accordingly be switched.
- the inventive device for implementing a Diagnostic interface on standard SPI has one electronic unit, for example an IC of a Control unit and a buffer unit.
- the electronic Unit has one data input, one data output, one Synchronization input, a clock input and a Register, preferably a shift register. In the register are the diagnostic information stored, the read out should be.
- the buffer unit has a signal input, a Signal output and an activation input.
- the data input and the data output of the electronic Unit are connected to each other via a first data line connected.
- the data output of the electronic unit is with the signal input of the buffer unit via a second Data line connected.
- the electronic unit Due to the additional circuit, the electronic unit with a conventional diagnostic interface to the SPI interface connected to a microcontroller.
- Device are the synchronization input of the electronic unit and the activation input of the Buffer unit via a third data line with each other connected.
- both inputs can be created by applying a Signal set by the microprocessor at the same time become.
- the pullup i. of the logical level
- the data output is opencollector, a pullup resistor switched at the data output.
- the inventive method for implementing a Diagnostic interface on standard SPI can with a Device as described above, and a Microprocessor be performed.
- the microprocessor sets the Synchronization input of the electronic unit and the Activation input of the buffer unit, i. of the Microprocessor applies an active signal to these inputs at.
- the inputs are interconnected connected so that a signal from the microprocessor the both addressed inputs simultaneously.
- the data is transferred from the shift register via the buffer unit that is activated is output and from Microprocessor read in via the MISO.
- the first data bit is sent over the first data line from Data output given to the data input and thereby on Final sent.
- the microprocessor evaluates the read out data bits accordingly by For example, the received string is shifted by 1 bit.
- the electronic unit designed for a baud rate that is not the SPI interface of the Microprocessor corresponds, is expediently the Baud rate from the microprocessor accordingly switched.
- a computer program according to the invention comprises all Program code means to all steps of the invention Procedure to perform.
- the computer program can open suitable data media, such as EEPROMs, flash memories but also CD-ROMs, floppy disks or hard disk drives be saved.
- the computer program is completed from an electronic processing unit, here for example the microprocessor.
- FIG. 1 shows a device according to the invention in FIG schematic representation.
- the electronic unit 10 is used to control Control unit external ignition output stages. It exists in this Case no need to transfer data from the microprocessor to electronic unit 10 to send.
- diagnostic data of the electrical unit 10 stored in a diagnostic register 13, typically a shift register, in the electronic Unit 10 are stored, to be read.
- a buffer unit 12 can in this case a single gate serve.
- the pullup resistor 11 should - if at all needed - are in the range of 10 kOhm, depending on the desired baud rate.
- the electronic unit 10 has a data input 14, a synchronization input 15, a clock input 16 and a data output 17.
- the data output 17 is over a first data line 18 with the data input 14 connected.
- the pull-up resistor 11 provided, which between data output 17 and Supply voltage VCC is connected.
- the electronic unit 10 has a series of Inputs, which are designated here by IN1 to IN6, and a series of outputs, here with OUT1 to OUT6 referred to.
- the inputs are for communication with the microprocessor. They represent a parallel Interface.
- the outputs are for example for Control of ignition stages used.
- the buffer unit 12 has a signal input 19, a Signal output 20 and an activation input 21 on.
- the signal input 19 of the buffer unit 12 is connected via a second data line 22 to the data output 17 of electronic unit 10 connected.
- Of the Activation input 21 is via a third data line 23rd with the synchronization input 15 of the electronic Unit 10 connected.
- the signal output 20 serves as MISO. It means that via the signal output 20, the diagnostic data of the electronic unit.
- a first method step 30 the Synchronization input 13 is set. This will be the electronic unit 10 addressed and at the same time the Buffer unit 12 activated.
- a clock signal created. This serves to synchronize the data input and data output.
- SPI interface by ICs with Standard interface proves to be beneficial. So is it possible to hardware support the SPI interface to use. Besides, pins can be on Microprocessor can be saved. Of particular advantage is that ICs with conventional diagnostic interface be used if no other, functional reasons exist, which is a revision of the Make ICs necessary.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
- Tests Of Electronic Circuits (AREA)
- Communication Control (AREA)
Description
- Figur 1
- eine bevorzugte Ausführungsform der erfindungsgemäßen Vorrichtung in schematischer Darstellung, und
- Figur 2
- eine bevorzugte Ausführungsform des erfindungsgemäßen Verfahrens im Flussdiagramm.
Claims (8)
- Vorrichtung, zur Umsetzung einer Diagnoseschnittstelle auf Standard-SPI, welche aufweist:eine elektronische Einheit (10), mit einem Dateneingang (14), einem Datenausgang (17), einem Synchronisationseingang (15), einem Takteingang (16) und einem Register (13), undeine Puffereinheit (12), mit einem Signaleingang (19), einem Signalausgang (20) und einem Aktivierungseingang (21),
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Synchronisationseingang (15) der elektronischen Einheit (10) und der Aktivierungseingang (21) der Puffereinheit (12) über eine dritte Datenleitung (23) miteinander verbunden sind.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß am Datenausgang (17) der elektronischen Einheit (10) ein Pullup-Widerstand (11) geschaltet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie mit Vorrichtungen gleicher Art kaskadierbar ist.
- Verfahren zur Umsetzung einer Diagnoseschnittstelle auf Standard-SPI mit einer Vorrichtung nach einem der Ansprüche 1 bis 4 und einem Mikroprozessor, bei dem zunächst der Mikroprozessor den Synchronisationseingang (15) der elektronischen Einheit (10) und den Aktivierungseingang (21) der Puffereinheit (12) setzt, ein Taktsignal an den Takteingang (16) der elektronischen Einheit (10) anlegt und anschließend über den Signalausgang (20) der Puffereinheit (12) eine Anzahl von Datenbits, welche im Register (13) der elektronischen Einheit (10) gespeichert waren, ausliest, dadurch gekennzeichnet, dass ein erstes Datenbit über die erste Datenleitung (18) vom Datenausgang (17) zum Dateneingang (14) gegeben wird und dadurch am Schluss gesendet wird und der Mikroprozessor die ausgelesenen Datenbits entsprechend auswertet.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die Baudrate umgeschaltet wird.
- Computerprogramm mit Programmcode-Mitteln, um sämtliche Schritte des Anspruchs 5 durchzuführen, wenn das Computerprogramm auf einem Computer oder einer entsprechenden Recheneinheit, insbesondere einem Mikroprozessor, ausgeführt wird.
- Computerprogrammprodukt mit Programmcode-Mitteln, die auf einem computerlesbaren Datenträger gespeichert sind, um das Verfahren nach Anspruch 5 durchzuführen, wenn das Computerprogramm auf einem Computer oder einer entsprechenden Recheneinheit, insbesondere einem Mikroprozessor ausgeführt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10128753 | 2001-06-13 | ||
DE10128753A DE10128753A1 (de) | 2001-06-13 | 2001-06-13 | Vorrichtung und ein Verfahren zur Umsetzung einer Diagnoseschnittstelle auf Standard-SPI |
PCT/DE2002/002023 WO2002101349A2 (de) | 2001-06-13 | 2002-06-04 | Vorrichtung und ein verfahren zur umsetzung einer diagnoseschnittstelle auf standard-spi |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1399831A2 EP1399831A2 (de) | 2004-03-24 |
EP1399831B1 true EP1399831B1 (de) | 2005-03-16 |
Family
ID=7688191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02754180A Expired - Lifetime EP1399831B1 (de) | 2001-06-13 | 2002-06-04 | Vorrichtung und verfahren zur umsetzung einer diagnoseschnittstelle auf standard-spi |
Country Status (5)
Country | Link |
---|---|
US (1) | US7188010B2 (de) |
EP (1) | EP1399831B1 (de) |
JP (1) | JP4394438B2 (de) |
DE (2) | DE10128753A1 (de) |
WO (1) | WO2002101349A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113534995A (zh) * | 2021-06-24 | 2021-10-22 | 合肥松豪电子科技有限公司 | 一种spi接口共用的tddi芯片 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7823015B2 (en) * | 2001-02-20 | 2010-10-26 | Siemens Aktiengesellschaft | Method and device for determining a full error description for at least on part of a technical system computer program element and computer-readable storage medium |
DE102007008383A1 (de) * | 2007-02-21 | 2008-08-28 | Robert Bosch Gmbh | Steuergerät für den Personenschutz und Verfahren zur Ansteuerung von Mitteln zum Personenschutz |
DE102007018830A1 (de) * | 2007-04-20 | 2008-12-24 | Continental Automotive Gmbh | Anordnung zur Datenübertragung |
TWI369610B (en) * | 2008-04-25 | 2012-08-01 | Novatek Microelectronics Corp | Serial peripheral interface (spi) circuit and display using the same |
DE102009028103A1 (de) | 2009-07-30 | 2011-02-03 | Robert Bosch Gmbh | Verfahren zur Durchführung einer Kommunikation |
WO2017183555A1 (ja) * | 2016-04-19 | 2017-10-26 | 日本精機株式会社 | 車両用表示装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4012109C2 (de) * | 1990-04-14 | 1999-06-10 | Bosch Gmbh Robert | Vorrichtung zur Funktionsüberwachung eines elektrischen/elektronischen Schaltmittels, seines angeschlossenen Verbrauchers, einer Ansteuerung und seiner Verbindungsleitung |
DE4032926A1 (de) | 1990-10-17 | 1992-04-23 | Bosch Gmbh Robert | Vorrichtung zum pruefen eines kraftfahrzeugtestsystems |
JP3801247B2 (ja) * | 1994-12-23 | 2006-07-26 | エスティーマイクロエレクトロニクス,インコーポレイテッド | 電気装置再起動回路 |
IT1291499B1 (it) | 1997-02-05 | 1999-01-11 | Magneti Marelli Spa | Dispositivo atto a consentire la condivisione di una linea di comunicazione |
DE19733748C2 (de) * | 1997-08-04 | 1999-07-15 | Bosch Gmbh Robert | Datenübertragungsvorrichtung |
US6813777B1 (en) * | 1998-05-26 | 2004-11-02 | Rockwell Collins | Transaction dispatcher for a passenger entertainment system, method and article of manufacture |
DE19837242C1 (de) * | 1998-08-17 | 2000-03-02 | Siemens Ag | Bussystem in einem Fahrzeug und Verfahren zur Übertragung von Nachrichten |
US7248597B2 (en) * | 2001-05-02 | 2007-07-24 | Nvidia Corporation | General purpose input/output controller |
-
2001
- 2001-06-13 DE DE10128753A patent/DE10128753A1/de not_active Withdrawn
-
2002
- 2002-06-04 DE DE50202492T patent/DE50202492D1/de not_active Expired - Lifetime
- 2002-06-04 JP JP2003504062A patent/JP4394438B2/ja not_active Expired - Fee Related
- 2002-06-04 WO PCT/DE2002/002023 patent/WO2002101349A2/de active IP Right Grant
- 2002-06-04 EP EP02754180A patent/EP1399831B1/de not_active Expired - Lifetime
- 2002-06-04 US US10/477,812 patent/US7188010B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113534995A (zh) * | 2021-06-24 | 2021-10-22 | 合肥松豪电子科技有限公司 | 一种spi接口共用的tddi芯片 |
CN113534995B (zh) * | 2021-06-24 | 2023-02-28 | 合肥松豪电子科技有限公司 | 一种spi接口共用的tddi芯片 |
Also Published As
Publication number | Publication date |
---|---|
JP4394438B2 (ja) | 2010-01-06 |
EP1399831A2 (de) | 2004-03-24 |
DE10128753A1 (de) | 2002-12-19 |
WO2002101349A2 (de) | 2002-12-19 |
US7188010B2 (en) | 2007-03-06 |
JP2004533070A (ja) | 2004-10-28 |
DE50202492D1 (de) | 2005-04-21 |
WO2002101349A3 (de) | 2004-01-15 |
US20040139369A1 (en) | 2004-07-15 |
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