Initial public release of WII5 Buoy firmware

Firmware for an autonomous wave-measurement buoy (ATmega2560-based
WII5 v2 board). Reads wave motion from a Sparton AHRS-M1/M2 IMU,
samples GPS and battery state, and reports back over Iridium SBD
satellite telemetry. Originally developed 2012-2024.

This is the first public release. Code, documentation, and field-tested
operating modes (Capture, Sleep, Position, ManualTest, SelfTest,
LowBattery) are licensed under Apache 2.0 — see LICENSE and NOTICE.

See README.md for an overview and build instructions, CONTRIBUTING.md
for how to contribute, and DEPLOYMENTS.md for the field-deployment log.

tools/upload.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# SPDX-License-Identifier: Apache-2.0
+# Copyright (c) 2012-2024 Scott Penrose <scottp@dd.com.au> and WII5 Buoy contributors
+#
+# This file is part of WII5 Buoy firmware.
+# See LICENSE for full terms.
+
+# Upload built firmware to a remote build host.
+# Set these env vars (or copy this file to upload.local.sh and edit):
+: "${WII5_BUILD_DIR:?set to your Arduino build dir, e.g. ~/Documents/Arduino/Build}"
+: "${WII5_AVRDUDE_CONF:?path to avrdude.conf}"
+: "${WII5_REMOTE:?e.g. user@host}"
+: "${WII5_REMOTE_PORT:=22}"
+
+rsync -av -e "ssh -p $WII5_REMOTE_PORT" \
+	"$WII5_AVRDUDE_CONF" "$WII5_BUILD_DIR"/*.hex \
+	"$WII5_REMOTE:~/firmware/"