Make first power-up a diagnostic sequenceMake first power-up a diagnostic sequence1Before powerIdentity, orientation, visual inspection and short checks.2Controlled powerAppropriate current limit; verify rails and reset state.3Basic communicationConnect debug; identify device; load a minimal image.4Application testsAdd clock-dependent and external interfaces in stages.³Ô¹Ïtv · ORIGINAL ENGINEERING ILLUSTRATION · NOT TO SCALE