FDIR

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Grzegorz Gajoch edited this page Nov 2, 2016 · 7 revisions

Description

In this documents possible faults should be adressed and anaylsed in their consequences and possible solutions.

Faults

SEU in flash memory

Possible problems:

no sign of error (SEU in usused part of memory),
faulty calculations (SEU in constant part),
not calculating part of the code correctly,
total loss of subsystem (e.g. processor get stuck, not responding to any command) Mitigation:
some kind of bootloader which have smaller memory footprint (probablity of failure is much lower) which will load data from external memory (flash/fram) with some voting (e.g. majority out of 5).

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