-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Somebody in the thread at some point said: | Joerg Reisenweber wrote: |> Do we really need more reasons to care about that issue? | | How about Postel's law ? | | http://en.wikipedia.org/wiki/Robustness_Principle | | Sounds like a good enough rule to follow at any interface, not just | software interfaces.
''Be conservative in what you do, be liberal in what you accept from others'' is a nice general principle. But then where does one stop, accepting mains power directly, automotive 12V, 12V charger connection, broken chargers... it is a guiding principle to be taken into account at specification time. Every new thing we accept to support has costs. What I like though is the "Be conservative in what you do" part of it. Because we have not seen failures in the field from GTA02 arrangements, I am having a hard time accepting we need to change anything from proven GTA02 situation. If someone can actually show that GTA02 style arrangement leads to product failure in normal circumstances then it makes it clear we need to do better. But it seems thousands of users are proving it's robust enough already. Why add reverse voltage protection when nobody seems to have reversed the voltage on their USB connector to date? Still one part of what Joerg has been talking about he characterized as different component selection so it was more robust, that sounds fine if it is not adding expense / size. - -Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAki3jzcACgkQOjLpvpq7dMrgxgCcDA3C++FOMMRWnwvPpwrxRcug S8cAoI15ITxFC4X0xWiHcPo0RI0pHjgm =qoAf -----END PGP SIGNATURE----- _______________________________________________ hardware mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/hardware
