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.

WII5Help.h

@@ -0,0 +1,44 @@
+// 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.
+
+/**
+ * @file WII5Help.h
+ * @brief Help-text generator for the `@Help` console command.
+ */
+
+#ifndef WII5Help_h
+#define WII5Help_h
+
+#include <WII5.h>
+#include <WII5Help.h>
+
+class WII5Help {
+	public:
+		WII5Help() {}
+		virtual WII5_CONTROLLERS controllerId() {return WII5CONTROLLER_HELP;}
+		bool processConsoleCsv();
+
+	protected:
+		bool displayIndex();
+		bool display404();
+		bool displayList();
+		bool displayInfo();
+		bool displayGeneral();
+		bool displayMaths();
+		bool displayHardware();
+		bool displayData();
+		bool displayTesting();
+		bool displayAdvanced();
+		bool displaySettings();
+		bool displaySparton();
+		bool displayIridium();
+		bool displayGps();
+		bool displayStorage();
+};
+
+extern WII5Help wii5Help;
+
+#endif