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/bits/bits.c

@@ -0,0 +1,30 @@
+// 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.
+
+#define BitVal(data,y) ( (data>>y) & 1)      /** Return Data.Y value   **/
+#define SetBit(data,y)    data |= (1 << y)    /** Set Data.Y   to 1    **/
+#define ClearBit(data,y)  data &= ~(1 << y)   /** Clear Data.Y to 0    **/
+
+
+#include <stdio.h>
+#include <stdint.h>
+
+int main() {
+
+	uint32_t out = 0;
+
+	// Main header - where am I, what is my voltss
+	SetBit(out, 1);
+
+	// Standard WII output
+	SetBit(out, 11);
+	SetBit(out, 12);
+	SetBit(out, 13);
+	SetBit(out, 14);
+
+	printf("New Number = %d\n", out);
+	return(0);
+}