Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
WKetel
User Rank
Author
re: Hunting that elusive bug
WKetel   11/3/2010 9:38:21 PM
NO RATINGS
This article unintentionally offers another solution, which has two parts, the first being to not make the system so incredibly complex. Don't put all of a cars smart functions on one chip, don't even put them in one module. It is much more likely to be able to understand what code is doing if it is only doing one thing. So coming up with an adequately detailed description of what the system will do is a very good start. The second part of the solution is after a function is selected for a given system, carefully define all of what the function must do, and then make that description be the specification, and, most importantly, avoid feature creep. Both in initial concept creation and as the project is in process, constantly changing and adding is a certified way to add errors.

sharps_eng
User Rank
Author
re: Hunting that elusive bug
sharps_eng   10/1/2010 8:02:40 PM
NO RATINGS
Interestingly this article contains 6 or more arguments ended by a 'counsel of despair' typified by 'its so complex you'll never find all the bugs, so why bother?' then describes a brute-force method of testing to try to find said bugs, and _prove_their_absence_(I'll not go there!). Reliable design used to start by designing a core so simple it could be proven to be correct using tools that themselves were simple enough to be proven likewise. Thereafter, this virtuous circle was widened step by step to encompass the entire application, with each proven building block introducing no additional uncertainty save that due to the current layer being developed. But before the impetus had built, or critical mass achieved, commercial forces would often kill the project or force it to market early, and the work done to date would be lost, instead of forming the core of future systems. It would be fascinating to be a code archeologist and unearth some ultra-safe, elegant and incredibly simple systems that have been scrapped without regard to their potential value. Real 'lost knowledge', worthy of a Dan Brown novel (and then some).

MikeLC
User Rank
Author
re: Hunting that elusive bug
MikeLC   9/30/2010 8:14:34 AM
NO RATINGS
As a programmer who has done a fair amount of client/server software, it certainly is important for the hardware to be reliable. Keep up the good work.

STS_SK
User Rank
Author
re: Hunting that elusive bug
STS_SK   9/29/2010 4:39:41 AM
NO RATINGS
Good reminder of problem faced in SOC integration



Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

ESC Silicon Valley 2015 Sneak Peek! Using Arduinos & ChipKITs for Rapid Prototyping
Max Maxfield
Post a comment
When it comes to my hobby projects, I'm a huge fan of Arduino and ChipKIT microcontroller development boards. One of the big attractions is the huge ecosystem that's grown around these ...

Bernard Cole

A Book For All Reasons
Bernard Cole
1 Comment
Robert Oshana's recent book "Software Engineering for Embedded Systems (Newnes/Elsevier)," written and edited with Mark Kraeling, is a 'book for all reasons.' At almost 1,200 pages, it ...

Martin Rowe

Leonard Nimoy, We'll Miss you
Martin Rowe
5 comments
Like many of you, I was saddened to hear the news of Leonard Nimoy's death. His Star Trek character Mr. Spock was an inspiration to many of us who entered technical fields.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Radio
LATEST ARCHIVED BROADCAST
EE Times Senior Technical Editor Martin Rowe will interview EMC engineer Kenneth Wyatt.
Flash Poll