Beginnings of Wires-X replies.

YSFGateway/WiresX.cpp

@@ -18,6 +18,10 @@
 
 #include "WiresX.h"
 #include "YSFPayload.h"
+#include "YSFFICH.h"
+#include "Sync.h"
+#include "CRC.h"
+#include "Log.h"
 
 #include <cstdio>
 #include <cassert>
@@ -26,28 +30,59 @@ const unsigned char CALL_DX[]      = {0x5DU, 0x71U};
 const unsigned char CALL_CONNECT[] = {0x5DU, 0x41U};
 const unsigned char CALL_ALL[]     = {0x5DU, 0x66U};
 
+const unsigned char DEFAULT_FICH[] = {0x20U, 0x00U, 0x15U, 0x00U};
+
+const unsigned char NET_HEADER[] = "YSFDGATEWAY             ALL       ";
+
 CWiresX::CWiresX(CNetwork* network) :
 m_network(network),
-m_reflector()
+m_reflector(),
+m_timer(1000U, 0U, 100U + 750U),
+m_csd1(NULL)
 {
 	assert(network != NULL);
+
+	m_csd1 = new unsigned char[20U];
 }
 
 CWiresX::~CWiresX()
 {
+	delete[] m_csd1;
 }
 
 WX_STATUS CWiresX::process(const unsigned char* data, unsigned char fi, unsigned char dt, unsigned char fn)
 {
-	if (fi != YSF_FI_COMMUNICATIONS || dt != YSF_DT_DATA_FR_MODE || fn != 1U)
+	assert(data != NULL);
-		return WXS_NONE;
 
-	unsigned char buffer[20U];
+	if (dt != YSF_DT_DATA_FR_MODE)
+		return WXS_NONE;
 
 	CYSFPayload payload;
+
+	if (fi == YSF_FI_HEADER) {
+		payload.readDataFRModeData1(data, m_csd1);
+		return WXS_NONE;
+	}
+
+	if (fi == YSF_FI_COMMUNICATIONS && fn == 0U) {
+		if (::memcmp(m_csd1, "                    ", 20U) == 0)
+			payload.readDataFRModeData1(data, m_csd1);
+		return WXS_NONE;
+	}
+
+	if (fi == YSF_FI_TERMINATOR) {
+		if (::memcmp(m_csd1, "                    ", 20U) == 0)
+			payload.readDataFRModeData1(data, m_csd1);
+		return WXS_NONE;
+	}
+
+	if (fi == YSF_FI_COMMUNICATIONS && fn == 1U) {
+		unsigned char buffer[20U];
 		bool valid = payload.readDataFRModeData2(data, buffer);
-	if (!valid)
+		if (!valid) {
+			::memset(m_csd1, ' ', 20U);
 			return WXS_NONE;
+		}
 
 		if (::memcmp(buffer + 1U, CALL_DX, 2U) == 0)
 			processDX();
@@ -55,6 +90,9 @@ WX_STATUS CWiresX::process(const unsigned char* data, unsigned char fi, unsigned
 			processAll();
 		else if (::memcmp(buffer + 1U, CALL_CONNECT, 2U) == 0)
 			return processConnect();
+		else
+			::memset(m_csd1, ' ', 20U);
+	}
 
 	return WXS_NONE;
 }
@@ -66,7 +104,9 @@ std::string CWiresX::getReflector() const
 
 void CWiresX::processDX()
 {
+	::LogDebug("Received DX from %10.10s", m_csd1 + 10U);
 
+	m_timer.start();
 }
 
 void CWiresX::processAll()
@@ -81,5 +121,110 @@ WX_STATUS CWiresX::processConnect()
 
 void CWiresX::clock(unsigned int ms)
 {
+	m_timer.clock(ms);
+	if (m_timer.isRunning() && m_timer.hasExpired()) {
+		LogDebug("Send reply");
+
+		unsigned char data[150U];
+		::memset(data, 0x00U, 150U);
+		::memset(data, ' ', 128U);
+
+		data[0U] = 0x03U;			// XXX Serial no
+		data[1U] = 0x5DU;
+		data[2U] = 0x51U;
+		data[3U] = 0x5FU;			// Start of data marker
+		data[4U] = 0x26U;			// Repeater type
+
+		data[127U] = 0x03U;			// End of data marker
+		data[128U] = CCRC::addCRC(data, 128U);
+
+		createReply(data, 140U);
+
+		m_timer.stop();
+	}
+}
 
+void CWiresX::createReply(const unsigned char* data, unsigned int length)
+{
+	assert(data != NULL);
+	assert(length > 0U);
+
+	// Write the header
+	unsigned char buffer[200U];
+	::memcpy(buffer, NET_HEADER, 34U);
+	buffer[34U] = 0x00U;
+
+	CSync::add(buffer + 35U);
+
+	CYSFFICH fich;
+	fich.load(DEFAULT_FICH);
+	fich.setFI(YSF_FI_HEADER);
+	fich.encode(buffer + 35U);
+
+	CYSFPayload payload;
+	payload.writeDataFRModeData1(m_csd1, buffer + 35U);
+	// payload.writeDataFRModeData2("                   ", buffer + 35U);
+
+	m_network->write(buffer);
+
+	unsigned char bt = length / 260U;
+	fich.setBT(bt);
+
+	unsigned char fn = 0U;
+	unsigned char bn = 0U;
+
+	unsigned int offset = 0U;
+	while (offset < length) {
+		switch (fn) {
+		case 0U: {
+				unsigned int len = length - offset;
+				if (len > 220U)      fich.setFT(7U);
+				else if (len > 180U) fich.setFT(6U);
+				else if (len > 140U) fich.setFT(5U);
+				else if (len > 100U) fich.setFT(4U);
+				else if (len > 60U)  fich.setFT(3U);
+				else if (len > 20U)  fich.setFT(2U);
+				else                 fich.setFT(1U);
+				payload.writeDataFRModeData1(m_csd1, buffer + 35U);
+				// payload.writeDataFRModeData2("                   ", buffer + 35U);
+			}
+			break;
+		case 1U:
+			// payload.writeDataFRModeData1("                   ", buffer + 35U);
+			payload.writeDataFRModeData2(data + offset, buffer + 35U);
+			offset += 20U;
+			break;
+		default:
+			payload.writeDataFRModeData1(data + offset, buffer + 35U);
+			offset += 20U;
+			payload.writeDataFRModeData2(data + offset, buffer + 35U);
+			offset += 20U;
+			break;
+		}
+
+		fich.setFN(fn);
+		fich.setBN(bn);
+		fich.setFI(YSF_FI_COMMUNICATIONS);
+		fich.encode(buffer + 35U);
+
+		m_network->write(buffer);
+
+		fn++;
+		if (fn >= 8U) {
+			fn = 0U;
+			bn++;
+		}
+	}
+
+	// Write the trailer
+	buffer[34U] = 0x01U;
+
+	fich.load(DEFAULT_FICH);
+	fich.setFI(YSF_FI_TERMINATOR);
+	fich.encode(buffer + 35U);
+
+	payload.writeDataFRModeData1(m_csd1, buffer + 35U);
+	// payload.writeDataFRModeData2("                   ", buffer + 35U);
+
+	m_network->write(buffer);
 }

YSFGateway/WiresX.h

@@ -20,6 +20,7 @@
 #define	WIRESX_H
 
 #include "Network.h"
+#include "Timer.h"
 
 #include <string>
 
@@ -43,10 +44,14 @@ public:
 private:
 	CNetwork*      m_network;
 	std::string    m_reflector;
+	CTimer         m_timer;
+	unsigned char* m_csd1;
 
 	WX_STATUS processConnect();
 	void processDX();
 	void processAll();
+
+	void createReply(const unsigned char* data, unsigned int length);
 };
 
 #endif

YSFGateway/YSFFICH.cpp

@@ -190,3 +190,33 @@ void CYSFFICH::load(const unsigned char* fich)
 
 	::memcpy(m_fich, fich, 4U);
 }
+
+void CYSFFICH::setFI(unsigned char fi)
+{
+	m_fich[0U] &= 0x3FU;
+	m_fich[0U] |= (fi << 6) & 0xC0U;
+}
+
+void CYSFFICH::setBN(unsigned char bn)
+{
+	m_fich[0U] &= 0xFCU;
+	m_fich[0U] |= bn & 0x03U;
+}
+
+void CYSFFICH::setBT(unsigned char bt)
+{
+	m_fich[1U] &= 0x3FU;
+	m_fich[1U] |= (bt << 6) & 0xC0U;
+}
+
+void CYSFFICH::setFN(unsigned char fn)
+{
+	m_fich[0U] &= 0xC7U;
+	m_fich[0U] |= (fn << 3) & 0x38U;
+}
+
+void CYSFFICH::setFT(unsigned char ft)
+{
+	m_fich[1U] &= 0xF8U;
+	m_fich[1U] |= ft & 0x07U;
+}

YSFGateway/YSFFICH.h

@@ -34,6 +34,12 @@ public:
 	unsigned char getFT() const;
 	unsigned char getDT() const;
 
+	void setFI(unsigned char fi);
+	void setBN(unsigned char bn);
+	void setBT(unsigned char bt);
+	void setFN(unsigned char fn);
+	void setFT(unsigned char ft);
+
 	void load(const unsigned char* fich);
 
 private:

YSFGateway/YSFGateway.cpp

@@ -226,13 +226,13 @@ int CYSFGateway::run()
 
 				if (m_gps != NULL)
 					m_gps->data(buffer + 14U, buffer + 35U, fi, dt, fn);
+			}
 
-				if (fi == YSF_FI_TERMINATOR) {
+			if (buffer[34U] == 0x01U) {
 				if (m_gps != NULL)
 					m_gps->reset();
 				watchdogTimer.stop();
 			}
-			}
 
 			if (networkEnabled && m_linked)
 				m_netNetwork->write(buffer);

YSFGateway/YSFPayload.cpp

@@ -186,6 +186,8 @@ bool CYSFPayload::readDataFRModeData1(const unsigned char* data, unsigned char*
 	assert(data != NULL);
 	assert(dt != NULL);
 
+	::memset(dt, ' ', 20U);
+
 	data += YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES;
 
 	unsigned char dch[45U];
@@ -231,6 +233,8 @@ bool CYSFPayload::readDataFRModeData2(const unsigned char* data, unsigned char*
 	assert(data != NULL);
 	assert(dt != NULL);
 
+	::memset(dt, ' ', 20U);
+
 	data += YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES;
 
 	unsigned char dch[45U];