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.

WII5Strings.h

@@ -0,0 +1,56 @@
+// 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 WII5Strings.h
+ * @brief String-formatting helpers: strDriver, strStatus, strError, etc.
+ */
+
+#ifndef WII5Strings_h
+#define WII5Strings_h
+
+#include <WII5.h>
+#include <WII5Strings.h>
+
+class WII5Strings {
+	public:
+		WII5Strings() {}
+		virtual WII5_CONTROLLERS controllerId() {return WII5CONTROLLER_STRINGS;}
+		WII5_COMMANDS parseCommand(char *in1, char *in2 = NULL, char *in3 = NULL);
+		WII5_DEVICES parseDevice(char *in);
+		WII5_DRIVERS parseDriver(char *in);
+		WII5_PORTS parsePort(char *in);
+		WII5GPS_MODES parseGPSMode(char *in);
+		WII5_SWITCH parseSwitch(char *in);
+		WII5_MODES parseMode(char *in);
+
+		// char* strDevice();
+		char* strCommand(WII5_COMMANDS c);
+		char* strDevice(WII5_DEVICES d);
+		char* strDriver(WII5_DRIVERS d);
+		char* strPort(WII5_PORTS p);
+		char* strStatus(WII5_STATUS s);
+		char* strError(WII5_ERRORS e);
+		char* strSwitch(WII5_SWITCH s);
+		char* strGPSMode(WII5GPS_MODES m);
+		char* strPinMode(uint8_t p);
+		char* strState(uint8_t p);
+		char* strMode(WII5_MODES p);
+    char* strPinArduinoName(uint8_t p);
+    char* strPinWII5Name(uint8_t p);
+		char* strSelfTestStatus(WII5SELFTEST_STATUS in);
+		char* strSelfTestStatusLong(WII5SELFTEST_STATUS in);
+		char* strSelfTestDevice(WII5SELFTEST_DEVICES in);
+
+	protected:
+		// TODO - remove anything hard coded
+		// TODO - use protected memory - strncpy et al
+		void setBufferUnknown();
+};
+
+extern WII5Strings wii5Strings;
+
+#endif