Source: Hacker News
Article note: I like the "debug journal" genre, this is a good one with a good lesson.
That lesson being that the bring-up for the gigantic pile of mismatched IPs glued together in a modern uC is incredibly fiddly, and if a micro-controller data sheet says "wait for X" you can get away doing everything _then_ waiting for it to settle until you can't, at which point it punches you in the taint.
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