The "Minimalist Champion" of Embedded Communication —‑ How One‑Wire Does the Most with the Least Har
1-Wire is a half-duplex serial bus by Dallas Semiconductor, transmitting clock & data on one wire with parasitic power supply. It covers iButton tags, various s
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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. Introduction to the 1-Wire Communication Protocol The 1-Wire bus is a wired half-duplex (cannot send and receive data at the same time) serial bus…
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