embarked upon a seeking to fix this problem, and while he got there in the end his progress builds for a long and engrossing read.
We journey through the guts of the board and along the way discover a lot about how reset signals are generated. The eventual culprit is a back-EMF generated through the reset distribution logic itself inducing the low-pulled line to never quite descend into logic 0 area once it has been drew high, and the solution an extremely simple application of a diode. For anyone who wishes to learn about logic level detective work it’s well worth a seem. Meanwhile the board itself with its 28 Arm cores appears to have slew of possibilities. It’s even a board we’ve mentioned before, in a personal supercomputer project.
Read more: hackaday.com