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109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/*
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Copyright (c) 2016-2020 Peter Antypas
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This file is part of the MAIANA™ transponder firmware.
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The firmware is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>
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*/
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#ifndef CONFIG_H_
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#define CONFIG_H_
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#include "radio_config.h"
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#include "TXPowerSettings.h"
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#define FW_REV "4.0.0"
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/*
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* Defining this symbol forces all output (NMEA + debug) to a high-speed USART for tunneling to an application that demuxes it.
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* Multiplexed output is still ASCII, but every line of text begins with a message class in square brackets. Examples:
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*
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* [NMEA]!AIVDM,....
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* [DEBUG]GPS Initialized
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*
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*/
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//#define MULTIPLEXED_OUTPUT 1
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#ifdef MULTIPLEXED_OUTPUT
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#define DBG printf_serial
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#else
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#define DBG printf_null
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#endif
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// Some AIS messages can occupy 5 time slots. Nothing we care about exceeds 2 slots (2x256).
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#define MAX_AIS_RX_PACKET_SIZE 512
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// As a class B transponder, we never transmit anything bigger than 240 bits.
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#define MAX_AIS_TX_PACKET_SIZE 256
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// Maximum allowed backlog in TX queue
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#define MAX_TX_PACKETS_IN_QUEUE 4
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// Set to true to emit proprietary NMEA sentences for debugging TX scheduling. Not useful in production.
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#define REPORT_TX_SCHEDULING 0
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// Set to true to force RSSI sampling at every SOTDMA timer slot on both channels
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#define FULL_RSSI_SAMPLING 1
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// Headroom above noise floor (in dB) that constitutes a clear channel for transmission
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#if FULL_RSSI_SAMPLING
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#define TX_CCA_HEADROOM 6
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#else
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// When sampling RSSI sparsely, there is a tendency to overestimate the noise floor, so there is no need for headroom
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#define TX_CCA_HEADROOM 0
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#endif
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// Transmission intervals in seconds
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#define MIN_TX_INTERVAL 5
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#define MIN_MSG_18_TX_INTERVAL 30
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#define MAX_MSG_18_TX_INTERVAL 180
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// Default interval for message 24 A&B (static data report) = 6 minutes
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#define MSG_24_TX_INTERVAL 360
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// The spec calls for Class B transmitters to listen for the first 20 bits of each frame before transmitting.
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// It takes the Si4463 a few bits' time to switch from RX to TX, so I arbitrarily picked the 12th bit instead.
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#define CCA_SLOT_BIT 11
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// Extra debugging using halting assertions
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//#define DEV_MODE 1
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#define BOOTMODE_ADDRESS 0x20009C00
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#define DFU_FLAG_MAGIC 0xa191feed
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#define CLI_FLAG_MAGIC 0x209a388d
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#define OTP_DATA 1
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#define ENABLE_WDT 1
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/**
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* This is a bit of a pain, but in the legacy breakout boards the TX LED
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* was manipulated by both a hardware switch and the GPIO, so the MCU logic is reversed.
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*
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* The only way to support those legacy boards is to build a separate binary
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* with this switch predefined as 1. There is no automated way to detect which kind of breakout MAIANA has.
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*/
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#ifndef LEGACY_BREAKOUTS
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#define LEGACY_BREAKOUTS 1
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#endif
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#endif /* CONFIG_H_ */
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