July 2008
Intermediate to advanced
544 pages
16h 52m
English
Content preview from Computers as Components, 2nd Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
8.2 Networks for Embedded Systems 405
without any request from the intended user of the system. Data-push programming
makes sense for periodic data—if the data will always be used at regular intervals,
we can reduce data traffic on the network by automatically sending it when it is
needed. Example 8.1 shows an application that can make good use of the data-push
architecture.
Example 8.1
Data-push network architectures
Consider the following automobile in which distributed sensors and actuators talk to a central
controller:
Airbags
Brakes
Brakes
Side impact sensors
Central
controller
Engine
Front
impact
sensor
The sensors generally need to be sampled periodically ...