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M17: implemented APRS

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This commit is contained in:
f4exb
2022-07-03 10:06:12 +02:00
parent b69275949a
commit 3cf3938757
17 changed files with 647 additions and 11 deletions
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plugins/channeltx/modm17/m17modprocessor.cpp
+65
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@@ -18,10 +18,13 @@
#include <codec2/codec2.h>
#include "m17/M17Modulator.h"
#include "maincore.h"
#include "m17modax25.h"
#include "m17modprocessor.h"
MESSAGE_CLASS_DEFINITION(M17ModProcessor::MsgSendSMS, Message)
MESSAGE_CLASS_DEFINITION(M17ModProcessor::MsgSendAPRS, Message)
MESSAGE_CLASS_DEFINITION(M17ModProcessor::MsgSendAudioFrame, Message)
MESSAGE_CLASS_DEFINITION(M17ModProcessor::MsgStartAudio, Message)
MESSAGE_CLASS_DEFINITION(M17ModProcessor::MsgStopAudio, Message)
@@ -57,6 +60,24 @@ bool M17ModProcessor::handleMessage(const Message& cmd)
// test(notif.getSourceCall(), notif.getDestCall());
return true;
}
else if (MsgSendAPRS::match(cmd))
{
const MsgSendAPRS& notif = (const MsgSendAPRS&) cmd;
M17ModAX25 modAX25;
QString strData;
if (notif.getInsertPosition()) {
strData += "!" + formatAPRSPosition();
} else {
strData = notif.getData();
}
QByteArray packetBytes = modAX25.makePacket(notif.getCall(), notif.getTo(), notif.getVia(), strData);
packetBytes.prepend(0x02); // APRS standard type
packetBytes.truncate(798); // Maximum packet size is 798 payload + 2 bytes CRC = 800 bytes (32*25)
processPacket(notif.getSourceCall(), notif.getDestCall(), notif.getCAN(), packetBytes);
return true;
}
else if (MsgSendAudioFrame::match(cmd))
{
MsgSendAudioFrame& notif = (MsgSendAudioFrame&) cmd;
@@ -248,3 +269,47 @@ void M17ModProcessor::output_baseband(std::array<uint8_t, 2> sync_word, const st
std::array<int16_t, 1920> baseband = m_m17Modulator.symbols_to_baseband(temp); // 1920 48 kS/s int16_t samples
m_basebandFifo.write(baseband.data(), 1920);
}
QString M17ModProcessor::formatAPRSPosition()
{
float latitude = MainCore::instance()->getSettings().getLatitude();
float longitude = MainCore::instance()->getSettings().getLongitude();
int latDeg, latMin, latFrac, latNorth;
int longDeg, longMin, longFrac, longEast;
// Convert decimal latitude to degrees, min and hundreths of a minute
latNorth = latitude >= 0.0f;
latitude = abs(latitude);
latDeg = (int) latitude;
latitude -= (float) latDeg;
latitude *= 60.0f;
latMin = (int) latitude;
latitude -= (float) latMin;
latitude *= 100.0f;
latFrac = round(latitude);
// Convert decimal longitude
longEast = longitude >= 0.0f;
longitude = abs(longitude);
longDeg = (int) longitude;
longitude -= (float) longDeg;
longitude *= 60.0f;
longMin = (int) longitude;
longitude -= (float) longMin;
longitude *= 100.0f;
longFrac = round(longitude);
// Insert position with house symbol (-) in to data field
QString latStr = QString("%1%2.%3%4")
.arg(latDeg, 2, 10, QChar('0'))
.arg(latMin, 2, 10, QChar('0'))
.arg(latFrac, 2, 10, QChar('0'))
.arg(latNorth ? 'N' : 'S');
QString longStr = QString("%1%2.%3%4")
.arg(longDeg, 3, 10, QChar('0'))
.arg(longMin, 2, 10, QChar('0'))
.arg(longFrac, 2, 10, QChar('0'))
.arg(longEast ? 'E' : 'W');
return QString("%1/%2-").arg(latStr).arg(longStr);
}