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Jody Bentley
27feb73d4e
initBasicGPS() waited a fixed 1 second and then decided the GPS was present only if NMEA data had already arrived. Cold-start GPS modules often need 2-5 seconds before they emit their first sentence, so on a cold boot detection frequently failed. A failed detection sets gps_detected = false, which hides all GPS CLI settings and disables GPS time sync until the next reboot - so the GPS appears permanently dead even though the hardware is fine. Poll for up to ~5 seconds (in 250ms steps) and return as soon as any data appears. Fast modules are detected almost immediately and add no boot delay; slow cold-start modules now get enough time. The ENV_SKIP_GPS_DETECT bypass is unchanged. Fixes #2258.