June 2017
Intermediate to advanced
478 pages
13h 14m
English
Content preview from Mastering Embedded Linux Programming - Second Edition
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Summary
Being able to update the software on devices in the field is at the very least a useful attribute, and if the device is connected to the internet, it becomes an absolute must. And yet, all too often it is a feature that is left until the last part of a project, on the assumption that it is not a hard problem to solve. In this chapter, I hope that I have illustrated the problems that are associated with designing an effective and robust update mechanism, and also that there are several open-source options readily available. You do not have to reinvent the wheel any more.
The approach used most often, and also the one with most real-world testing, is the symmetric image (A/B) update, or its cousin the asymmetric (recovery) image update. ...
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