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/2024/16mhz.sh

@@ -0,0 +1,26 @@
+#!/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.
+
+# Burn LED-flash test sketch + bootloader for the 16 MHz board variant.
+#   See http://eleccelerator.com/fusecalc/fusecalc.php?chip=atmega2560
+#   lfuse 0xff - external oscillator
+#   hfuse 0xd8
+#   efuse 0xfd - BOD Level 1 = 2.7V
+: "${WII5_AVRDUDE:=avrdude}"
+
+CONFIGFILE=./avrdude.conf
+BOOT_HEX=./optiboot_flash_atmega2560_UART0_230400_11059200L_BIGBOOT.hex
+
+"$WII5_AVRDUDE" \
+	-C"$CONFIGFILE" -v \
+	-v \
+	-patmega2560 \
+	-cstk500v2 \
+	-Pusb \
+	-Uflash:w:ledflash_16mhz.ino.hex:i \
+	-Uboot:w:"$BOOT_HEX":i \
+	-Ulock:w:0