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Started adding decoders for RS41 radiosondes

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Hopefully fixed M2K2 radiosonde battery voltage decoding
Updated binary
This commit is contained in:
furrtek 2017-11-10 02:20:44 +00:00
parent 1b93dd53e8
commit dc82f15ece
9 changed files with 122 additions and 48 deletions
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2
firmware/application/ui_sonde.cpp
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@ -112,7 +112,7 @@ void SondeView::focus() {
void SondeView::on_packet(const sonde::Packet& packet) {
//const auto hex_formatted = packet.symbols_formatted();
text_signature.set(packet.signature());
text_signature.set(packet.type_string());
text_serial.set(packet.serial_number());
text_voltage.set(unit_auto_scale(packet.battery_voltage(), 2, 3) + "V");

1
firmware/application/ui_touchtunes.cpp
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@ -1,6 +1,7 @@
/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2017 Furrtek
* Copyright (C) 2017 NotPike (notpike@horsefucker.org)
*
* This file is part of PortaPack.
*

1
firmware/application/ui_touchtunes.hpp
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@ -1,6 +1,7 @@
/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2017 Furrtek
* Copyright (C) 2017 NotPike (notpike@horsefucker.org)
*
* This file is part of PortaPack.
*

3
firmware/baseband/proc_sonde.cpp
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@ -41,8 +41,9 @@ void SondeProcessor::execute(const buffer_c8_t& buffer) {
/* 38.4kHz, 32 samples */
feed_channel_stats(decimator_out);
for(size_t i=0; i<decimator_out.count; i++) {
for (size_t i=0; i<decimator_out.count; i++) {
if( mf.execute_once(decimator_out.p[i]) ) {
clock_recovery_fsk_9600(mf.get_output());
clock_recovery_fsk_4800(mf.get_output());
}
}

27
firmware/baseband/proc_sonde.hpp
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@ -1,6 +1,7 @@
/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2017 Furrtek
* Copyright (C) 2014 zilog80
*
* This file is part of PortaPack.
*
@ -113,19 +114,37 @@ private:
dsp::decimate::FIRC16xR16x32Decim8 decim_1 { };
dsp::matched_filter::MatchedFilter mf { baseband::ais::square_taps_38k4_1t_p, 2 };
clock_recovery::ClockRecovery<clock_recovery::FixedErrorFilter> clock_recovery_fsk_4800 {
// Actually 4800bits/s but the Manchester coding doubles the symbol rate
clock_recovery::ClockRecovery<clock_recovery::FixedErrorFilter> clock_recovery_fsk_9600 {
19200, 9600, { 0.0555f },
[this](const float raw_symbol) {
const uint_fast8_t sliced_symbol = (raw_symbol >= 0.0f) ? 1 : 0;
this->packet_builder_fsk_4800_M10.execute(sliced_symbol);
this->packet_builder_fsk_9600_Meteomodem.execute(sliced_symbol);
}
};
PacketBuilder<BitPattern, NeverMatch, FixedLength> packet_builder_fsk_4800_M10 {
PacketBuilder<BitPattern, NeverMatch, FixedLength> packet_builder_fsk_9600_Meteomodem {
{ 0b00110011001100110101100110110011, 32, 1 },
{ },
{ 88 * 2 * 8 },
[this](const baseband::Packet& packet) {
const SondePacketMessage message { sonde::Packet::Type::M10, packet };
const SondePacketMessage message { sonde::Packet::Type::Meteomodem_unknown, packet };
shared_memory.application_queue.push(message);
}
};
clock_recovery::ClockRecovery<clock_recovery::FixedErrorFilter> clock_recovery_fsk_4800 {
19200, 4800, { 0.0555f },
[this](const float raw_symbol) {
const uint_fast8_t sliced_symbol = (raw_symbol >= 0.0f) ? 1 : 0;
this->packet_builder_fsk_4800_Vaisala.execute(sliced_symbol);
}
};
PacketBuilder<BitPattern, NeverMatch, FixedLength> packet_builder_fsk_4800_Vaisala {
{ 0b00001000011011010101001110001000, 32, 1 },
{ },
{ 320 * 8 },
[this](const baseband::Packet& packet) {
const SondePacketMessage message { sonde::Packet::Type::Vaisala_RS41_SG, packet };
shared_memory.application_queue.push(message);
}
};

2
firmware/common/baseband_packet.hpp
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@ -62,7 +62,7 @@ public:
}
private:
std::bitset<1408> data { };
std::bitset<2560> data { };
Timestamp timestamp_ { };
size_t count { 0 };
};

94
firmware/common/sonde_packet.cpp
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@ -25,12 +25,31 @@
namespace sonde {
Packet::Packet(
const baseband::Packet& packet,
const Type type
) : packet_ { packet },
decoder_ { packet_ },
reader_bi_m { decoder_ },
type_ { type }
{
if (type_ == Type::Meteomodem_unknown) {
// Right now we're just sure that the sync is from a Meteomodem sonde, differentiate between models now
const uint32_t id_byte = reader_bi_m.read(1 * 8, 16);
if (id_byte == 0x649F)
type_ = Type::Meteomodem_M10;
else if (id_byte == 0x648F)
type_ = Type::Meteomodem_M2K2;
}
}
size_t Packet::length() const {
return decoder_.symbols_count();
}
bool Packet::is_valid() const {
return true;
return true; // TODO
}
Timestamp Packet::received_at() const {
@ -41,50 +60,75 @@ Packet::Type Packet::type() const {
return type_;
}
/*uint8_t Packet::vaisala_descramble(const uint32_t pos) {
return reader_raw.read(pos * 8, 8) ^ vaisala_mask[pos & 63];
};*/
uint32_t Packet::GPS_altitude() const {
return (reader_.read(22 * 8, 32) / 1000) - 48;
if ((type_ == Type::Meteomodem_M10) || (type_ == Type::Meteomodem_M2K2))
return (reader_bi_m.read(22 * 8, 32) / 1000) - 48;
else if (type_ == Type::Vaisala_RS41_SG) {
/*uint32_t altitude_ecef = 0;
for (uint32_t i = 0; i < 4; i++)
altitude_ecef = (altitude_ecef << 8) + vaisala_descramble(0x11C + i);*/
// TODO: and a bunch of maths (see ecef2elli() from RS1729)
return 0;
} else
return 0; // Unknown
}
float Packet::GPS_latitude() const {
return reader_.read(14 * 8, 32) / ((1ULL << 32) / 360.0);
if ((type_ == Type::Meteomodem_M10) || (type_ == Type::Meteomodem_M2K2))
return reader_bi_m.read(14 * 8, 32) / ((1ULL << 32) / 360.0);
//else if (type_ == Type::Vaisala_RS41_SG)
// return vaisala_descramble();
else
return 0; // Unknown
}
float Packet::GPS_longitude() const {
return reader_.read(18 * 8, 32) / ((1ULL << 32) / 360.0);
if ((type_ == Type::Meteomodem_M10) || (type_ == Type::Meteomodem_M2K2))
return reader_bi_m.read(18 * 8, 32) / ((1ULL << 32) / 360.0);
else
return 0; // Unknown
}
uint32_t Packet::battery_voltage() const {
return (reader_.read(69 * 8, 8) + (reader_.read(70 * 8, 8) << 8)) * 1000 / 150;
if (type_ == Type::Meteomodem_M10)
return (reader_bi_m.read(69 * 8, 8) + (reader_bi_m.read(70 * 8, 8) << 8)) * 1000 / 150;
else if (type_ == Type::Meteomodem_M2K2)
return reader_bi_m.read(69 * 8, 8) * 66; // Actually 65.8
else
return 0; // Unknown
}
std::string Packet::signature() const {
const auto header = reader_.read(0, 24);
if (header == 0x649F20)
return "M10";
else if ((header == 0x648F20) || (header == 0x648F23))
return "M2K2";
else
return "0x" + symbols_formatted().data.substr(0, 6);
std::string Packet::type_string() const {
switch (type_) {
case Type::Unknown: return "Unknown";
case Type::Meteomodem_unknown: return "Meteomodem ???";
case Type::Meteomodem_M10: return "Meteomodem M10";
case Type::Meteomodem_M2K2: return "Meteomodem M2K2";
case Type::Vaisala_RS41_SG: return "Vaisala RS41-SG";
default: return "? 0x" + symbols_formatted().data.substr(0, 6);
}
}
std::string Packet::serial_number() const {
if (type() == Type::M10) {
if (type() == Type::Meteomodem_M10) {
// See https://github.com/rs1729/RS/blob/master/m10/m10x.c line 606
// Starting at byte #93: 00000000 11111111 22222222 33333333 44444444
// CCCC AAAABBBB
// 44444444 33333333
// DDDEEEEE EEEEEEEE
return to_string_hex(reader_.read(93 * 8 + 16, 4), 1) +
to_string_dec_uint(reader_.read(93 * 8 + 20, 4), 2, '0') + " " +
to_string_hex(reader_.read(93 * 8 + 4, 4), 1) + " " +
to_string_dec_uint(reader_.read(93 * 8 + 24, 3), 1) +
to_string_dec_uint(reader_.read(93 * 8 + 27, 13), 4, '0');
return to_string_hex(reader_bi_m.read(93 * 8 + 16, 4), 1) +
to_string_dec_uint(reader_bi_m.read(93 * 8 + 20, 4), 2, '0') + " " +
to_string_hex(reader_bi_m.read(93 * 8 + 4, 4), 1) + " " +
to_string_dec_uint(reader_bi_m.read(93 * 8 + 24, 3), 1) +
to_string_dec_uint(reader_bi_m.read(93 * 8 + 27, 13), 4, '0');
}
return 0;
} else
return 0;
}
FormattedSymbols Packet::symbols_formatted() const {
@ -93,8 +137,8 @@ FormattedSymbols Packet::symbols_formatted() const {
bool Packet::crc_ok() const {
switch(type()) {
case Type::M10: return crc_ok_M10();
default: return false;
case Type::Meteomodem_M10: return crc_ok_M10();
default: return false;
}
}

40
firmware/common/sonde_packet.hpp
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@ -36,18 +36,13 @@ class Packet {
public:
enum class Type : uint32_t {
Unknown = 0,
M10 = 1,
Meteomodem_unknown = 1,
Meteomodem_M10 = 2,
Meteomodem_M2K2 = 3,
Vaisala_RS41_SG = 4,
};
Packet(
const baseband::Packet& packet,
const Type type
) : packet_ { packet },
decoder_ { packet_ },
reader_ { decoder_ },
type_ { type }
{
}
Packet(const baseband::Packet& packet, const Type type);
size_t length() const;
@ -56,24 +51,37 @@ public:
Timestamp received_at() const;
Type type() const;
std::string type_string() const;
std::string serial_number() const;
uint32_t battery_voltage() const;
uint32_t GPS_altitude() const;
float GPS_latitude() const;
float GPS_longitude() const;
std::string signature() const;
uint32_t battery_voltage() const;
FormattedSymbols symbols_formatted() const;
bool crc_ok() const;
private:
using Reader = FieldReader<BiphaseMDecoder, BitRemapNone>;
static constexpr uint8_t vaisala_mask[64] = {
0x96, 0x83, 0x3E, 0x51, 0xB1, 0x49, 0x08, 0x98,
0x32, 0x05, 0x59, 0x0E, 0xF9, 0x44, 0xC6, 0x26,
0x21, 0x60, 0xC2, 0xEA, 0x79, 0x5D, 0x6D, 0xA1,
0x54, 0x69, 0x47, 0x0C, 0xDC, 0xE8, 0x5C, 0xF1,
0xF7, 0x76, 0x82, 0x7F, 0x07, 0x99, 0xA2, 0x2C,
0x93, 0x7C, 0x30, 0x63, 0xF5, 0x10, 0x2E, 0x61,
0xD0, 0xBC, 0xB4, 0xB6, 0x06, 0xAA, 0xF4, 0x23,
0x78, 0x6E, 0x3B, 0xAE, 0xBF, 0x7B, 0x4C, 0xC1
};
//uint8_t vaisala_descramble(const uint32_t pos);
const baseband::Packet packet_;
const BiphaseMDecoder decoder_;
const Reader reader_;
const Type type_;
const FieldReader<BiphaseMDecoder, BitRemapNone> reader_bi_m;
Type type_;
bool crc_ok_M10() const;
};

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firmware/portapack-h1-havoc.bin
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