Learn vocabulary for hardware bring-up: board bring-up checklist, power rail noise, oscilloscope and logic analyser usage, and confirming initial hardware function.
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What does 'the board is not responding' typically mean during hardware bring-up?
During bring-up, 'not responding' is a starting point for systematic diagnosis: check power rails are within spec, confirm the clock is oscillating, verify the programming interface is accessible, and ensure the correct firmware image was loaded for the target hardware revision.
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What does 'we're seeing noise on the power rail' mean, and why does it matter?
Power rail noise (ripple, spikes, or ground bounce) is a common bring-up issue that causes seemingly random failures. Diagnosis involves measuring the rail with an oscilloscope, adding decoupling capacitors close to power pins, and improving PCB ground planes.
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What is an oscilloscope used for in embedded hardware bring-up?
An oscilloscope displays voltage versus time, allowing engineers to verify clock frequencies, check signal integrity on buses (SPI, I2C, UART), measure rise/fall times, detect glitches, and inspect power rail quality during bring-up.
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What does a logic analyser do, and how does it differ from an oscilloscope?
Logic analysers are ideal for debugging digital communication protocols: they can capture many channels simultaneously and decode frames (e.g., show I2C address + data bytes). Oscilloscopes are better for inspecting signal voltage, noise, and timing at the analogue level.
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What does 'confirming power rail voltage' mean as a bring-up step?
Confirming power rails is one of the first steps in any bring-up checklist: measure 3.3V, 5V, 1.8V, and any other supply rails before powering ICs. A rail out of tolerance will cause unpredictable failures — and powering a device at the wrong voltage can permanently damage components.