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BUSMASTER is an Open Source Software tool to simulate, analyze and test data bus systems such as CAN. BUSMASTER was conceptualized, designed and implemented by Robert Bosch Engineering and Business Solutions (RBEI). Presently it is a joint project of RBEI and ETAS GmbH. CAN Log The messages on the CAN bus maybe saved to a log file for further analysis. The saved messages may also be replayed onto the CAN bus, using the replay options. The Log Options dialog allows the log file format to be specified, as well as the message types to be logged & replayed.
Automotive diagnostics have come a long way since the “idiot lights” of the 1980s. The current version of the on-board diagnostics (OBD) protocol provides real time data as well as fault diagnostics, thanks to the numerous sensors connected to the data network in the modern vehicle. While the hardware interface is fairly standardized now, manufacturers use one of several different standards to encode the data. Alex Sidorenko has built an which provides a serial interface using the and supports all OBD-II standards.The hardware is built around the LPC1517 Cortex-M3 microprocessor and can accept a couple of different versions. Here’s the, and a set of Gerber files for the PCB layout, if you’d like to dig in to it’s internals.
The is used to provide bi-directional half-duplex communication interface with the micro-controller. Also included is the that provides an interface between the micro controller and the physical two-wire CAN lines on the ODB-II connector. The serial output from the adapter board is connected to a computer using a serial to USB adapter.The is written in C for the LPCXpresso IDE – a GNU tool chain for ARM Cortex-M processors, but can also be compiled using a couple of other toolchains. He’s got instructions if you’d like to build the, or if you’d like to.We featured Alex’s way back in 2007, so he’s been working on this for a while and has a good grip on what he’s doing.Posted in, Tagged, Post navigation.
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ABS is not covered under the compulsory information that vehicle manufacturers have to provide by law so the answer to that is no.It has been an uphill struggle with manufacturers to force them to release the engine diagnostics and real time data information and, for now, that is where it stops.An open source OBD will allow people that are brave enough to extract more and hopefully that will all be collected somewhere so that eventually there will be something equivalent to the X431 Launch that does a reasonable job on most cars. A perfect job on all cars is about as likely as viable cold fusion. Ford has the OpenXC platform ( ) for reading stuff, but it also is really limited. The point being that you could put the codes from any vehicle on the reader, but even the Ford data is limited.I happen to have couple of Chipkits with the network (includes 2 CAN interfaces) shield, so i was thinking of trying it, but since it’s for Fords only currently (no other car manufacturer or anyone else have contributed any codes) and i don’t have a Ford, it’s kind of useless to me.I do wish it would take off.
I second what @Alan Hightower says.The next rev should have the ability to repurpose any pin that isn’t 4, 5 and 16 (grounds and +VE) to any method of communication. That to me would be a true open source OBD-II adapter that I would “do a Fry” and yell “Shut up and take my money!”Soooo many manufacturers have used alternative pins for obscurity over the years and some even use the same pin. Take Pin 1 for example, GM use this for all their 33 kbit (and occasionally 83 kbit) single wire CAN data and is a common place for security negotiation to occur, whereas Mitsubishi have used it for MUT-II / MUT-III diagnostics and ECU reflashing.Alex Sidorenko, if you ever happen to read this, please 1-UP this for Mk2 and make it truly something special by implementing any pin / any bus / any protocol. I’m confident you could achieve this with a couple of MCP2515 IC’s, a couple of NCV7356 IC’s and a handful of MUX8532 IC’s to deal with the switching.I realise this may not be the cheapest solution, but there are so few products out there that offer this versatility that I think you could be onto a winner.