Allow the modem to host a serial display.

MMDVM.ini

@@ -125,6 +125,7 @@ LocalPort=20013
 Debug=0
 
 [TFT Serial]
+# Port=modem
 Port=/dev/ttyAMA0
 Brightness=50
 
@@ -149,6 +150,7 @@ DisplayClock=1
 UTC=0
 
 [Nextion]
+# Port=modem
 Port=/dev/ttyAMA0
 Brightness=50
 DisplayClock=1

MMDVMHost.cpp

@@ -17,7 +17,8 @@
  */
 
 #include "MMDVMHost.h"
-#include "Log.h"
+#include "SerialController.h"
+#include "ModemSerialPort.h"
 #include "Version.h"
 #include "StopWatch.h"
 #include "Defines.h"
@@ -30,6 +31,7 @@
 #include "P25Control.h"
 #include "Nextion.h"
 #include "Thread.h"
+#include "Log.h"
 
 #if defined(HD44780)
 #include "HD44780.h"
@@ -974,7 +976,7 @@ void CMMDVMHost::readParams()
 
 void CMMDVMHost::createDisplay()
 {
-	std::string type = m_conf.getDisplay();
+	std::string type   = m_conf.getDisplay();
 	unsigned int dmrid = m_conf.getDMRId();
 
 	LogInfo("Display Parameters");
@@ -987,7 +989,13 @@ void CMMDVMHost::createDisplay()
 		LogInfo("    Port: %s", port.c_str());
 		LogInfo("    Brightness: %u", brightness);
 
-		m_display = new CTFTSerial(m_callsign, dmrid, port, brightness);
+		ISerialPort* serial = NULL;
+		if (port == "modem")
+			serial = new CModemSerialPort(m_modem);
+		else
+			serial = new CSerialController(port, SERIAL_9600);
+
+		m_display = new CTFTSerial(m_callsign, dmrid, serial, brightness);
 	} else if (type == "Nextion") {
 		std::string port            = m_conf.getNextionPort();
 		unsigned int brightness     = m_conf.getNextionBrightness();
@@ -1002,7 +1010,13 @@ void CMMDVMHost::createDisplay()
 			LogInfo("    Display UTC: %s", utc ? "yes" : "no");
 		LogInfo("    Idle Brightness: %u", idleBrightness);
 
-		m_display = new CNextion(m_callsign, dmrid, port, brightness, displayClock, utc, idleBrightness);
+		ISerialPort* serial = NULL;
+		if (port == "modem")
+			serial = new CModemSerialPort(m_modem);
+		else
+			serial = new CSerialController(port, SERIAL_9600);
+
+		m_display = new CNextion(m_callsign, dmrid, serial, brightness, displayClock, utc, idleBrightness);
 #if defined(HD44780)
 	} else if (type == "HD44780") {
 		unsigned int rows              = m_conf.getHD44780Rows();

MMDVMHost.vcxproj

@@ -180,6 +180,7 @@
     <ClInclude Include="Log.h" />
     <ClInclude Include="MMDVMHost.h" />
     <ClInclude Include="Modem.h" />
+    <ClInclude Include="ModemSerialPort.h" />
     <ClInclude Include="Nextion.h" />
     <ClInclude Include="NullDisplay.h" />
     <ClInclude Include="P25Audio.h" />
@@ -195,6 +196,7 @@
     <ClInclude Include="RS129.h" />
     <ClInclude Include="RS241213.h" />
     <ClInclude Include="SerialController.h" />
+    <ClInclude Include="SerialPort.h" />
     <ClInclude Include="SHA256.h" />
     <ClInclude Include="StopWatch.h" />
     <ClInclude Include="Sync.h" />
@@ -243,6 +245,7 @@
     <ClCompile Include="Log.cpp" />
     <ClCompile Include="MMDVMHost.cpp" />
     <ClCompile Include="Modem.cpp" />
+    <ClCompile Include="ModemSerialPort.cpp" />
     <ClCompile Include="Nextion.cpp" />
     <ClCompile Include="NullDisplay.cpp" />
     <ClCompile Include="P25Audio.cpp" />
@@ -256,6 +259,7 @@
     <ClCompile Include="RS129.cpp" />
     <ClCompile Include="RS241213.cpp" />
     <ClCompile Include="SerialController.cpp" />
+    <ClCompile Include="SerialPort.cpp" />
     <ClCompile Include="SHA256.cpp" />
     <ClCompile Include="StopWatch.cpp" />
     <ClCompile Include="Sync.cpp" />

MMDVMHost.vcxproj.filters

@@ -203,6 +203,12 @@
     <ClInclude Include="RS241213.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="SerialPort.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="ModemSerialPort.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="BPTC19696.cpp">
@@ -376,5 +382,11 @@
     <ClCompile Include="RS241213.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="SerialPort.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="ModemSerialPort.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>

Makefile

@@ -9,9 +9,9 @@ LDFLAGS = -g
 OBJECTS = \
 		AMBEFEC.o BCH.o BPTC19696.o Conf.o CRC.o Display.o DMRControl.o DMRCSBK.o DMRData.o DMRDataHeader.o DMREMB.o DMREmbeddedLC.o DMRFullLC.o DMRLookup.o DMRLC.o \
 		DMRNetwork.o DMRShortLC.o DMRSlot.o DMRSlotType.o DMRAccessControl.o DMRTrellis.o DStarControl.o DStarHeader.o DStarNetwork.o DStarSlowData.o Golay2087.o \
-		Golay24128.o Hamming.o Log.o MMDVMHost.o Modem.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o P25NID.o P25Utils.o \
-		QR1676.o RS129.o RS241213.o SerialController.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o YSFControl.o YSFConvolution.o \
-		YSFFICH.o YSFNetwork.o YSFPayload.o
+		Golay24128.o Hamming.o Log.o MMDVMHost.o Modem.o ModemSerialPort.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o \
+		P25NID.o P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SerialPort.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o \
+		YSFControl.o YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
 
 all:		MMDVMHost
 

Makefile.Pi.Adafruit

@@ -9,9 +9,9 @@ LDFLAGS = -g -L/usr/local/lib
 OBJECTS = \
 		AMBEFEC.o BCH.o BPTC19696.o Conf.o CRC.o Display.o DMRControl.o DMRCSBK.o DMRData.o DMRDataHeader.o DMREMB.o DMREmbeddedLC.o DMRFullLC.o DMRLookup.o DMRLC.o \
 		DMRNetwork.o DMRShortLC.o DMRSlot.o DMRSlotType.o DMRAccessControl.o DMRTrellis.o DStarControl.o DStarHeader.o DStarNetwork.o DStarSlowData.o Golay2087.o \
-		Golay24128.o Hamming.o HD44780.o Log.o MMDVMHost.o Modem.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o P25NID.o \
-		P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o YSFControl.o \
-		YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
+		Golay24128.o Hamming.o HD44780.o Log.o MMDVMHost.o Modem.o ModemSerialPort.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o \
+		P25Network.o P25NID.o P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SerialPort.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o \
+		Utils.o YSFControl.o YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
 
 all:		MMDVMHost
 

Makefile.Pi.HD44780

@@ -9,9 +9,9 @@ LDFLAGS = -g -L/usr/local/lib
 OBJECTS = \
 		AMBEFEC.o BCH.o BPTC19696.o Conf.o CRC.o Display.o DMRControl.o DMRCSBK.o DMRData.o DMRDataHeader.o DMREMB.o DMREmbeddedLC.o DMRFullLC.o DMRLookup.o DMRLC.o \
 		DMRNetwork.o DMRShortLC.o DMRSlot.o DMRSlotType.o DMRAccessControl.o DMRTrellis.o DStarControl.o DStarHeader.o DStarNetwork.o DStarSlowData.o Golay2087.o \
-		Golay24128.o Hamming.o HD44780.o Log.o MMDVMHost.o Modem.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o P25NID.o \
-		P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o YSFControl.o \
-		YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
+		Golay24128.o Hamming.o HD44780.o Log.o MMDVMHost.o Modem.o ModemSerialPort.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o \
+		P25Network.o P25NID.o P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SerialPort.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o \
+		Utils.o YSFControl.o YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
 
 all:		MMDVMHost
 

Makefile.Pi.OLED

@@ -9,9 +9,9 @@ LDFLAGS = -g -L/usr/local/lib
 OBJECTS = \
 		AMBEFEC.o BCH.o BPTC19696.o Conf.o CRC.o Display.o DMRControl.o DMRCSBK.o DMRData.o DMRDataHeader.o DMREMB.o DMREmbeddedLC.o DMRFullLC.o DMRLookup.o DMRLC.o \
 		DMRNetwork.o DMRShortLC.o DMRSlot.o DMRSlotType.o DMRAccessControl.o DMRTrellis.o DStarControl.o DStarHeader.o DStarNetwork.o DStarSlowData.o Golay2087.o \
-		Golay24128.o Hamming.o OLED.o Log.o MMDVMHost.o Modem.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o P25NID.o \
-		P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o YSFControl.o \
-		YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
+		Golay24128.o Hamming.o OLED.o Log.o MMDVMHost.o Modem.o ModemSerialPort.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o \
+		P25NID.o P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SerialPort.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o \
+		YSFControl.o YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
 
 all:		MMDVMHost
 

Makefile.Pi.PCF8574

@@ -9,9 +9,9 @@ LDFLAGS = -g -L/usr/local/lib
 OBJECTS = \
 		AMBEFEC.o BCH.o BPTC19696.o Conf.o CRC.o Display.o DMRControl.o DMRCSBK.o DMRData.o DMRDataHeader.o DMREMB.o DMREmbeddedLC.o DMRFullLC.o DMRLookup.o DMRLC.o \
 		DMRNetwork.o DMRShortLC.o DMRSlot.o DMRSlotType.o DMRAccessControl.o DMRTrellis.o DStarControl.o DStarHeader.o DStarNetwork.o DStarSlowData.o Golay2087.o \
-		Golay24128.o Hamming.o HD44780.o Log.o MMDVMHost.o Modem.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o P25NID.o \
-		P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o YSFControl.o \
-		YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
+		Golay24128.o Hamming.o HD44780.o Log.o MMDVMHost.o Modem.o ModemSerialPort.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o \
+		P25Network.o P25NID.o P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SerialPort.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o \
+		Utils.o YSFControl.o YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
 
 all:		MMDVMHost
 

Makefile.Solaris

@@ -9,9 +9,9 @@ LDFLAGS = -g
 OBJECTS = \
 		AMBEFEC.o BCH.o BPTC19696.o Conf.o CRC.o Display.o DMRControl.o DMRCSBK.o DMRData.o DMRDataHeader.o DMREMB.o DMREmbeddedLC.o DMRFullLC.o DMRLookup.o DMRLC.o \
 		DMRNetwork.o DMRShortLC.o DMRSlot.o DMRSlotType.o DMRAccessControl.o DMRTrellis.o DStarControl.o DStarHeader.o DStarNetwork.o DStarSlowData.o Golay2087.o \
-		Golay24128.o Hamming.o Log.o MMDVMHost.o Modem.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o P25NID.o P25Utils.o \
-		QR1676.o RS129.o RS241213.o SerialController.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o YSFControl.o YSFConvolution.o \
-		YSFFICH.o YSFNetwork.o YSFPayload.o
+		Golay24128.o Hamming.o Log.o MMDVMHost.o Modem.o ModemSerialPort.o Nextion.o NullDisplay.o P25Audio.o P25Control.o P25Data.o P25LowSpeedData.o P25Network.o \
+		P25NID.o P25Utils.o QR1676.o RS129.o RS241213.o SerialController.o SerialPort.o SHA256.o StopWatch.o Sync.o TFTSerial.o Thread.o Timer.o UDPSocket.o Utils.o \
+		YSFControl.o YSFConvolution.o YSFFICH.o YSFNetwork.o YSFPayload.o
 
 all:		MMDVMHost
 

Modem.cpp

@@ -69,6 +69,8 @@ const unsigned char MMDVM_P25_LOST    = 0x32U;
 const unsigned char MMDVM_ACK         = 0x70U;
 const unsigned char MMDVM_NAK         = 0x7FU;
 
+const unsigned char MMDVM_SERIAL      = 0x80U;
+
 const unsigned char MMDVM_DEBUG1      = 0xF1U;
 const unsigned char MMDVM_DEBUG2      = 0xF2U;
 const unsigned char MMDVM_DEBUG3      = 0xF3U;
@@ -655,6 +657,15 @@ unsigned int CModem::readP25Data(unsigned char* data)
 	return len;
 }
 
+// To be implemented later if needed
+unsigned int CModem::readSerial(unsigned char* data, unsigned int length)
+{
+	assert(data != NULL);
+	assert(length > 0U);
+
+	return 0U;
+}
+
 bool CModem::hasDStarSpace() const
 {
 	unsigned int space = m_txDStarData.freeSpace() / (DSTAR_FRAME_LENGTH_BYTES + 4U);
@@ -816,6 +827,24 @@ bool CModem::writeP25Data(const unsigned char* data, unsigned int length)
 	return true;
 }
 
+bool CModem::writeSerial(const unsigned char* data, unsigned int length)
+{
+	assert(data != NULL);
+	assert(length > 0U);
+
+	unsigned char buffer[250U];
+
+	buffer[0U] = MMDVM_FRAME_START;
+	buffer[1U] = length + 3U;
+	buffer[2U] = MMDVM_SERIAL;
+
+	::memcpy(buffer + 3U, data, length);
+
+	int ret = m_serial.write(buffer, length + 3U);
+
+	return ret != int(length + 3U);
+}
+
 bool CModem::hasTX() const
 {
 	return m_tx;
@@ -1088,6 +1117,7 @@ RESP_TYPE_MMDVM CModem::getResponse()
 		case MMDVM_GET_VERSION:
 		case MMDVM_ACK:
 		case MMDVM_NAK:
+		case MMDVM_SERIAL:
 		case MMDVM_DEBUG1:
 		case MMDVM_DEBUG2:
 		case MMDVM_DEBUG3:

Modem.h

@@ -50,6 +50,8 @@ public:
 	unsigned int readYSFData(unsigned char* data);
 	unsigned int readP25Data(unsigned char* data);
 
+	unsigned int readSerial(unsigned char* data, unsigned int length);
+
 	bool hasDStarSpace() const;
 	bool hasDMRSpace1() const;
 	bool hasDMRSpace2() const;
@@ -71,6 +73,8 @@ public:
 	bool writeDMRShortLC(const unsigned char* lc);
 	bool writeDMRAbort(unsigned int slotNo);
 
+	bool writeSerial(const unsigned char* data, unsigned int length);
+
 	bool setMode(unsigned char mode);
 
 	bool sendCWId(const std::string& callsign);

ModemSerialPort.cpp

@@ -0,0 +1,59 @@
+/*
+*   Copyright (C) 2016 by Jonathan Naylor G4KLX
+*
+*   This program is free software; you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation; either version 2 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program; if not, write to the Free Software
+*   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "ModemSerialPort.h"
+
+#include <cstdio>
+#include <cassert>
+
+CModemSerialPort::CModemSerialPort(CModem* modem) :
+m_modem(modem)
+{
+	assert(modem != NULL);
+}
+
+CModemSerialPort::~CModemSerialPort()
+{
+}
+
+bool CModemSerialPort::open()
+{
+	return true;
+}
+
+int CModemSerialPort::write(const unsigned char* data, unsigned int length)
+{
+	assert(data != NULL);
+	assert(length > 0U);
+
+	bool ret = m_modem->writeSerial(data, length);
+
+	return ret ? int(length) : -1;
+}
+
+int CModemSerialPort::read(unsigned char* data, unsigned int length)
+{
+	assert(data != NULL);
+	assert(length > 0U);
+
+	return m_modem->readSerial(data, length);
+}
+
+void CModemSerialPort::close()
+{
+}

ModemSerialPort.h

@@ -0,0 +1,42 @@
+/*
+*   Copyright (C) 2016 by Jonathan Naylor G4KLX
+*
+*   This program is free software; you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation; either version 2 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program; if not, write to the Free Software
+*   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef ModemSerialPort_H
+#define ModemSerialPort_H
+
+#include "SerialPort.h"
+#include "Modem.h"
+
+class CModemSerialPort : public ISerialPort {
+public:
+	CModemSerialPort(CModem* modem);
+	virtual ~CModemSerialPort();
+
+	virtual bool open();
+
+	virtual int read(unsigned char* buffer, unsigned int length);
+
+	virtual int write(const unsigned char* buffer, unsigned int length);
+
+	virtual void close();
+
+private:
+	CModem* m_modem;
+};
+
+#endif

Nextion.cpp

@@ -25,11 +25,11 @@
 #include <ctime>
 #include <clocale>
 
-CNextion::CNextion(const std::string& callsign, unsigned int dmrid, const std::string& port, unsigned int brightness, bool displayClock, bool utc, unsigned int idleBrightness) :
+CNextion::CNextion(const std::string& callsign, unsigned int dmrid, ISerialPort* serial, unsigned int brightness, bool displayClock, bool utc, unsigned int idleBrightness) :
 CDisplay(),
 m_callsign(callsign),
 m_dmrid(dmrid),
-m_serial(port, SERIAL_9600),
+m_serial(serial),
 m_brightness(brightness),
 m_mode(MODE_IDLE),
 m_displayClock(displayClock),
@@ -37,6 +37,7 @@ m_utc(utc),
 m_idleBrightness(idleBrightness),
 m_clockDisplayTimer(1000U, 0U, 400U)
 {
+	assert(serial != NULL);
 	assert(brightness >= 0U && brightness <= 100U);
 }
 
@@ -46,9 +47,10 @@ CNextion::~CNextion()
 
 bool CNextion::open()
 {
-	bool ret = m_serial.open();
+	bool ret = m_serial->open();
 	if (!ret) {
 		LogError("Cannot open the port for the Nextion display");
+		delete m_serial;
 		return false;
 	}
 
@@ -302,13 +304,14 @@ void CNextion::clockInt(unsigned int ms)
 
 void CNextion::close()
 {
-	m_serial.close();
+	m_serial->close();
+	delete m_serial;
 }
 
 void CNextion::sendCommand(const char* command)
 {
 	assert(command != NULL);
 
-	m_serial.write((unsigned char*)command, ::strlen(command));
-	m_serial.write((unsigned char*)"\xFF\xFF\xFF", 3U);
+	m_serial->write((unsigned char*)command, ::strlen(command));
+	m_serial->write((unsigned char*)"\xFF\xFF\xFF", 3U);
 }

Nextion.h

@@ -21,7 +21,7 @@
 
 #include "Display.h"
 #include "Defines.h"
-#include "SerialController.h"
+#include "SerialPort.h"
 #include "Timer.h"
 
 #include <string>
@@ -29,7 +29,7 @@
 class CNextion : public CDisplay
 {
 public:
-  CNextion(const std::string& callsign, unsigned int dmrid, const std::string& port, unsigned int brightness, bool displayClock, bool utc, unsigned int idleBrightness);
+  CNextion(const std::string& callsign, unsigned int dmrid, ISerialPort* serial, unsigned int brightness, bool displayClock, bool utc, unsigned int idleBrightness);
   virtual ~CNextion();
 
   virtual bool open();
@@ -59,15 +59,15 @@ protected:
   virtual void clockInt(unsigned int ms);
 
 private:
-  std::string       m_callsign;
-  unsigned int      m_dmrid;
-  CSerialController m_serial;
-  unsigned int      m_brightness;
-  unsigned char     m_mode;
-  bool              m_displayClock;
-  bool              m_utc;
-  unsigned int      m_idleBrightness;
-  CTimer            m_clockDisplayTimer;
+  std::string   m_callsign;
+  unsigned int  m_dmrid;
+  ISerialPort*  m_serial;
+  unsigned int  m_brightness;
+  unsigned char m_mode;
+  bool          m_displayClock;
+  bool          m_utc;
+  unsigned int  m_idleBrightness;
+  CTimer        m_clockDisplayTimer;
 
   void sendCommand(const char* command);
 };

SerialController.h

@@ -20,6 +20,8 @@
 #ifndef SerialController_H
 #define SerialController_H
 
+#include "SerialPort.h"
+
 #include <string>
 
 #if defined(_WIN32) || defined(_WIN64)
@@ -38,17 +40,18 @@ enum SERIAL_SPEED {
 	SERIAL_230400 = 230400
 };
 
-class CSerialController {
+class CSerialController : public ISerialPort {
 public:
 	CSerialController(const std::string& device, SERIAL_SPEED speed, bool assertRTS = false);
-	~CSerialController();
+	virtual ~CSerialController();
 
-	bool open();
+	virtual bool open();
 
-	int  read(unsigned char* buffer, unsigned int length);
-	int  write(const unsigned char* buffer, unsigned int length);
+	virtual int read(unsigned char* buffer, unsigned int length);
 
-	void close();
+	virtual int write(const unsigned char* buffer, unsigned int length);
+
+	virtual void close();
 
 private:
 	std::string    m_device;

SerialPort.cpp

@@ -0,0 +1,23 @@
+/*
+*   Copyright (C) 2016 by Jonathan Naylor G4KLX
+*
+*   This program is free software; you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation; either version 2 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program; if not, write to the Free Software
+*   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "SerialPort.h"
+
+ISerialPort::~ISerialPort()
+{
+}

SerialPort.h

@@ -0,0 +1,37 @@
+/*
+*   Copyright (C) 2016 by Jonathan Naylor G4KLX
+*
+*   This program is free software; you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation; either version 2 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program; if not, write to the Free Software
+*   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef SerialPort_H
+#define SerialPort_H
+
+class ISerialPort {
+public:
+	virtual ~ISerialPort() = 0;
+
+	virtual bool open() = 0;
+
+	virtual int read(unsigned char* buffer, unsigned int length) = 0;
+
+	virtual int write(const unsigned char* buffer, unsigned int length) = 0;
+
+	virtual void close() = 0;
+
+private:
+};
+
+#endif

TFTSerial.cpp

@@ -44,14 +44,15 @@ const unsigned char FONT_LARGE  = 3U;
 // x = 0 to 159, y = 0 to 127 - Landscape
 // x = 0 to 127, y = 0 to 159 - Portrait
 
-CTFTSerial::CTFTSerial(const std::string& callsign, unsigned int dmrid, const std::string& port, unsigned int brightness) :
+CTFTSerial::CTFTSerial(const std::string& callsign, unsigned int dmrid, ISerialPort* serial, unsigned int brightness) :
 CDisplay(),
 m_callsign(callsign),
 m_dmrid(dmrid),
-m_serial(port, SERIAL_9600),
+m_serial(serial),
 m_brightness(brightness),
 m_mode(MODE_IDLE)
 {
+	assert(serial != NULL);
 	assert(brightness >= 0U && brightness <= 100U);
 }
 
@@ -61,9 +62,10 @@ CTFTSerial::~CTFTSerial()
 
 bool CTFTSerial::open()
 {
-	bool ret = m_serial.open();
+	bool ret = m_serial->open();
 	if (!ret) {
 		LogError("Cannot open the port for the TFT Serial");
+		delete m_serial;
 		return false;
 	}
 
@@ -368,131 +370,132 @@ void CTFTSerial::clearCWInt()
 
 void CTFTSerial::close()
 {
-	m_serial.close();
+	m_serial->close();
+	delete m_serial;
 }
 
 void CTFTSerial::clearScreen()
 {
-	m_serial.write((unsigned char*)"\x1B\x00\xFF", 3U);
+	m_serial->write((unsigned char*)"\x1B\x00\xFF", 3U);
 }
 
 void CTFTSerial::setForeground(unsigned char colour)
 {
 	assert(colour >= 0U && colour <= 7U);
 
-	m_serial.write((unsigned char*)"\x1B\x01", 2U);
-	m_serial.write(&colour, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x01", 2U);
+	m_serial->write(&colour, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::setBackground(unsigned char colour)
 {
 	assert(colour >= 0U && colour <= 7U);
 
-	m_serial.write((unsigned char*)"\x1B\x02", 2U);
-	m_serial.write(&colour, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x02", 2U);
+	m_serial->write(&colour, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::setRotation(unsigned char rotation)
 {
 	assert(rotation >= 0U && rotation <= 3U);
 
-	m_serial.write((unsigned char*)"\x1B\x03", 2U);
-	m_serial.write(&rotation, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x03", 2U);
+	m_serial->write(&rotation, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::setFontSize(unsigned char size)
 {
 	assert(size >= 1U && size <= 3U);
 
-	m_serial.write((unsigned char*)"\x1B\x04", 2U);
-	m_serial.write(&size, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x04", 2U);
+	m_serial->write(&size, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::gotoBegOfLine()
 {
-	m_serial.write((unsigned char*)"\x1B\x05\xFF", 3U);
+	m_serial->write((unsigned char*)"\x1B\x05\xFF", 3U);
 }
 
 void CTFTSerial::gotoPosText(unsigned char x, unsigned char y)
 {
-	m_serial.write((unsigned char*)"\x1B\x06", 2U);
-	m_serial.write(&x, 1U);
-	m_serial.write(&y, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x06", 2U);
+	m_serial->write(&x, 1U);
+	m_serial->write(&y, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::gotoPosPixel(unsigned char x, unsigned char y)
 {
-	m_serial.write((unsigned char*)"\x1B\x07", 2U);
-	m_serial.write(&x, 1U);
-	m_serial.write(&y, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x07", 2U);
+	m_serial->write(&x, 1U);
+	m_serial->write(&y, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::drawLine(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2)
 {
-	m_serial.write((unsigned char*)"\x1B\x08", 2U);
-	m_serial.write(&x1, 1U);
-	m_serial.write(&y1, 1U);
-	m_serial.write(&x2, 1U);
-	m_serial.write(&y2, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x08", 2U);
+	m_serial->write(&x1, 1U);
+	m_serial->write(&y1, 1U);
+	m_serial->write(&x2, 1U);
+	m_serial->write(&y2, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::drawBox(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, bool filled)
 {
 	if (filled)
-		m_serial.write((unsigned char*)"\x1B\x0A", 2U);
+		m_serial->write((unsigned char*)"\x1B\x0A", 2U);
 	else
-		m_serial.write((unsigned char*)"\x1B\x09", 2U);
+		m_serial->write((unsigned char*)"\x1B\x09", 2U);
 
-	m_serial.write(&x1, 1U);
-	m_serial.write(&y1, 1U);
-	m_serial.write(&x2, 1U);
-	m_serial.write(&y2, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write(&x1, 1U);
+	m_serial->write(&y1, 1U);
+	m_serial->write(&x2, 1U);
+	m_serial->write(&y2, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::drawCircle(unsigned char x, unsigned char y, unsigned char radius, bool filled)
 {
 	if (filled)
-		m_serial.write((unsigned char*)"\x1B\x0C", 2U);
+		m_serial->write((unsigned char*)"\x1B\x0C", 2U);
 	else
-		m_serial.write((unsigned char*)"\x1B\x0B", 2U);
+		m_serial->write((unsigned char*)"\x1B\x0B", 2U);
 
-	m_serial.write(&x, 1U);
-	m_serial.write(&y, 1U);
-	m_serial.write(&radius, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write(&x, 1U);
+	m_serial->write(&y, 1U);
+	m_serial->write(&radius, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::displayBitmap(unsigned char x, unsigned char y, const char* filename)
 {
 	assert(filename != NULL);
 
-	m_serial.write((unsigned char*)"\x1B\x0D", 2U);
-	m_serial.write(&x, 1U);
-	m_serial.write(&y, 1U);
-	m_serial.write((unsigned char*)filename, ::strlen(filename));
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x0D", 2U);
+	m_serial->write(&x, 1U);
+	m_serial->write(&y, 1U);
+	m_serial->write((unsigned char*)filename, ::strlen(filename));
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::setBrightness(unsigned char brightness)
 {
 	assert(brightness >= 0U && brightness <= 100U);
 
-	m_serial.write((unsigned char*)"\x1B\x0E", 2U);
-	m_serial.write(&brightness, 1U);
-	m_serial.write((unsigned char*)"\xFF", 1U);
+	m_serial->write((unsigned char*)"\x1B\x0E", 2U);
+	m_serial->write(&brightness, 1U);
+	m_serial->write((unsigned char*)"\xFF", 1U);
 }
 
 void CTFTSerial::displayText(const char* text)
 {
 	assert(text != NULL);
 
-	m_serial.write((unsigned char*)text, ::strlen(text));
+	m_serial->write((unsigned char*)text, ::strlen(text));
 }

TFTSerial.h

@@ -21,14 +21,14 @@
 
 #include "Display.h"
 #include "Defines.h"
-#include "SerialController.h"
+#include "SerialPort.h"
 
 #include <string>
 
 class CTFTSerial : public CDisplay
 {
 public:
-  CTFTSerial(const std::string& callsign, unsigned int dmrid, const std::string& port, unsigned int brightness);
+  CTFTSerial(const std::string& callsign, unsigned int dmrid, ISerialPort* serial, unsigned int brightness);
   virtual ~CTFTSerial();
 
   virtual bool open();
@@ -56,11 +56,11 @@ protected:
 	virtual void clearCWInt();
 
 private:
-   std::string       m_callsign;
-   unsigned int      m_dmrid;
-   CSerialController m_serial;
-   unsigned int      m_brightness;
-   unsigned char     m_mode;
+   std::string   m_callsign;
+   unsigned int  m_dmrid;
+   ISerialPort*  m_serial;
+   unsigned int  m_brightness;
+   unsigned char m_mode;
 
   void clearScreen();
   void setBackground(unsigned char colour);