In‑depth Analysis of the 1‑Wire Protocol: Master Core Logic in One Article, from Physical Layer to R
This article details 1-Wire physical layer wiring, open-drain circuit, two power supply modes, standard communication flow, signal timings, ROM commands and uni
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Project description
【Preliminary Note】The original hardware example in this article was written based on the RP2040. The actual hardware used in this hands-on demonstration features the W55RP20 as the main controller chip. The circuit logic and UF2 flashing operation principles are universally applicable, with only the main controller model differing. The original chip model mentioned in the circuit descriptions below is provided for reference purposes only. 1. Physical Layer 1.1 1-Wire Bus Connection Method The 1-Wire bus uses only one wire to transmit signals and provide power. Communication is asynchronous…
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