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UART Hello + Counter
demo Open · freely redistributable
An original CC0 bare-metal Feather nRF52840 Express program: it enables UARTE0 (TX on P0.25), prints a greeting and an incrementing four-digit decimal counter ("count 0000", "count 0001", …) using a real EasyDMA transfer for each line and a hand-written decimal increment with carry (no libc, no division), toggling the red LED once per line. Exercises the real UARTE0 EasyDMA transmit path onto the serial console.
Format: nRF52840 flash image (bare-metal, compiled C) · By: emulators.org · Licence: Public domain (CC0)