Dmx512 Rs232 support (#256)

* Started work on DMX512 rs232 device
cloned from sedu - no actual changes yet

* Implemented DMX protocol
Added baudrate debugging to ProviderRs232

* Added support for multiple DMX fixture types

libsrc/leddevice/CMakeLists.txt

@@ -33,6 +33,7 @@ SET(Leddevice_HEADERS
 	${CURRENT_SOURCE_DIR}/LedDevicePaintpack.h
 	${CURRENT_SOURCE_DIR}/LedDevicePiBlaster.h
 	${CURRENT_SOURCE_DIR}/LedDeviceSedu.h
+	${CURRENT_SOURCE_DIR}/LedDeviceDMX.h
 	${CURRENT_SOURCE_DIR}/LedDeviceFile.h
 	${CURRENT_SOURCE_DIR}/LedDeviceUdpRaw.h
 	${CURRENT_SOURCE_DIR}/LedDeviceUdpH801.h
@@ -60,6 +61,7 @@ SET(Leddevice_SOURCES
 	${CURRENT_SOURCE_DIR}/LedDevicePaintpack.cpp
 	${CURRENT_SOURCE_DIR}/LedDevicePiBlaster.cpp
 	${CURRENT_SOURCE_DIR}/LedDeviceSedu.cpp
+	${CURRENT_SOURCE_DIR}/LedDeviceDMX.cpp
 	${CURRENT_SOURCE_DIR}/LedDeviceFile.cpp
 	${CURRENT_SOURCE_DIR}/LedDeviceFadeCandy.cpp
 	${CURRENT_SOURCE_DIR}/LedDeviceUdpRaw.cpp

libsrc/leddevice/LedDeviceDMX.cpp

@@ -0,0 +1,84 @@
+#include "LedDeviceDMX.h"
+#include <QSerialPort>
+#include <time.h>
+
+LedDeviceDMX::LedDeviceDMX(const Json::Value &deviceConfig)
+	: ProviderRs232(deviceConfig)
+{
+        std::string _dmxString = deviceConfig.get("dmxdevice", "invalid").asString();
+	if (_dmxString == "raw")
+	{
+		_dmxDeviceType = 0;
+		_dmxStart = 1;
+		_dmxSlotsPerLed = 3;
+	}
+	else if (_dmxString == "McCrypt")
+	{
+		_dmxDeviceType = 1;
+		_dmxStart = 1;
+		_dmxSlotsPerLed = 4;
+	}
+	else
+	{
+		Error(_log, "unknown dmx device type %s", _dmxString.c_str());
+	}
+	Debug(_log, "_dmxString \"%s\", _dmxDeviceType %d", _dmxString.c_str(), _dmxDeviceType );
+	_rs232Port.setStopBits(QSerialPort::TwoStop);
+}
+
+LedDevice* LedDeviceDMX::construct(const Json::Value &deviceConfig)
+{
+	return new LedDeviceDMX(deviceConfig);
+}
+
+int LedDeviceDMX::write(const std::vector<ColorRgb> &ledValues)
+{
+	if ( (_ledBuffer.size() != _dmxChannelCount) || (_ledBuffer.size() == 0) )
+	{
+		_dmxLedCount  =  std::min(_ledCount, 512/_dmxSlotsPerLed);
+		_dmxChannelCount  = 1 + _dmxSlotsPerLed * _dmxLedCount;
+
+		Debug(_log, "_dmxStart %d, _dmxSlotsPerLed %d", _dmxStart, _dmxSlotsPerLed);
+		Debug(_log, "_ledCount %d, _dmxLedCount %d, _dmxChannelCount %d", _ledCount, _dmxLedCount, _dmxChannelCount);
+
+		_ledBuffer.resize(_dmxChannelCount, 0);
+		_ledBuffer[0] = 0x00;	// NULL START code
+	}
+
+	switch (_dmxDeviceType) {
+	case 0:
+		memcpy(_ledBuffer.data()+1, ledValues.data(), _dmxChannelCount-1);
+		break;
+	case 1:
+		int l =_dmxStart;
+		for (int d=0; d<_dmxLedCount; d++)
+		{
+			_ledBuffer[l++] = ledValues[d].red;
+			_ledBuffer[l++] = ledValues[d].green;
+			_ledBuffer[l++] = ledValues[d].blue;
+			_ledBuffer[l++] = 0xff;
+		}
+		break;
+	}
+
+	_rs232Port.setBreakEnabled(true);
+	nanosleep((const struct timespec[]){{0, 176000L}}, NULL);	// 176 uSec break time
+	_rs232Port.setBreakEnabled(false);
+	nanosleep((const struct timespec[]){{0, 12000L}}, NULL);	// 176 uSec make after break time
+
+#undef uberdebug
+#ifdef uberdebug
+	printf ("Writing %d bytes", _dmxChannelCount);
+	for (unsigned int i=0; i < _dmxChannelCount; i++)
+	{
+		if (i%32 == 0) {
+			printf ("\n%04x: ", i);
+		}
+		printf ("%02x ", _ledBuffer[i]);
+	}
+	printf ("\n");
+#endif
+
+	return writeBytes(_dmxChannelCount, _ledBuffer.data());
+}
+

libsrc/leddevice/LedDeviceDMX.h

@@ -0,0 +1,35 @@
+#pragma once
+
+// hyperion incluse
+#include "ProviderRs232.h"
+
+///
+/// Implementation of the LedDevice interface for writing to DMX512 rs232 led device.
+///
+class LedDeviceDMX : public ProviderRs232
+{
+public:
+	///
+	/// Constructs specific LedDevice
+	///
+	/// @param deviceConfig json device config
+	///
+	LedDeviceDMX(const Json::Value &deviceConfig);
+
+	/// constructs leddevice
+	static LedDevice* construct(const Json::Value &deviceConfig);
+
+private:
+	///
+	/// Writes the led color values to the led-device
+	///
+	/// @param ledValues The color-value per led
+	/// @return Zero on succes else negative
+	///
+	virtual int write(const std::vector<ColorRgb> &ledValues);
+	int _dmxDeviceType = 0;
+	int _dmxStart = 1;
+	int _dmxSlotsPerLed = 3;
+	int _dmxLedCount = 0;;
+	unsigned int _dmxChannelCount = 0;
+};

libsrc/leddevice/LedDeviceFactory.cpp

@@ -35,6 +35,7 @@
 #include "LedDevicePaintpack.h"
 #include "LedDevicePiBlaster.h"
 #include "LedDeviceSedu.h"
+#include "LedDeviceDMX.h"
 #include "LedDeviceFile.h"
 #include "LedDeviceFadeCandy.h"
 #include "LedDeviceTpm2net.h"
@@ -70,6 +71,7 @@ LedDevice * LedDeviceFactory::construct(const Json::Value & deviceConfig)
 	LedDevice::addToDeviceMap("adalight"      , LedDeviceAdalight::construct);
 	LedDevice::addToDeviceMap("adalightapa102", LedDeviceAdalightApa102::construct);
 	LedDevice::addToDeviceMap("sedu"          , LedDeviceSedu::construct);
+	LedDevice::addToDeviceMap("dmx"           , LedDeviceDMX::construct);
 	LedDevice::addToDeviceMap("tpm2"          , LedDeviceTpm2::construct);
 	LedDevice::addToDeviceMap("atmo"          , LedDeviceAtmo::construct);
 	LedDevice::addToDeviceMap("fadecandy"     , LedDeviceFadeCandy::construct);

libsrc/leddevice/LedDeviceSchemas.qrc

@@ -19,6 +19,7 @@
 		<file alias="schema-piblaster">schemas/schema-piblaster.json</file>
 		<file alias="schema-rawhid">schemas/schema-rawhid.json</file>
 		<file alias="schema-sedu">schemas/schema-sedu.json</file>
+		<file alias="schema-dmx">schemas/schema-dmx.json</file>
 		<file alias="schema-sk6812rgbw-spi">schemas/schema-sk6812rgbw-spi.json</file>
 		<file alias="schema-tinkerforge">schemas/schema-tinkerforge.json</file>
 		<file alias="schema-tpm2net">schemas/schema-tpm2net.json</file>

libsrc/leddevice/ProviderRs232.cpp

@@ -130,6 +130,7 @@ bool ProviderRs232::tryOpen(const int delayAfterConnect_ms)
 			}
 			return false;
 		}
+		Debug(_log, "Setting baud rate to %d", _baudRate_Hz);
 		_rs232Port.setBaudRate(_baudRate_Hz);
 		_stateChanged = true;
 	}

libsrc/leddevice/ProviderRs232.h

@@ -53,6 +53,9 @@ protected:
 
 	void closeDevice();
 
+	/// The RS232 serial-device
+	QSerialPort _rs232Port;
+
 private slots:
 	/// Unblock the device after a connection delay
 	void unblockAfterDelay();
@@ -74,7 +77,7 @@ private:
 	int _delayAfterConnect_ms;
 
 	/// The RS232 serial-device
-	QSerialPort _rs232Port;
+//	QSerialPort _rs232Port;
 
 	bool _blockedForDelay;
 	

libsrc/leddevice/schemas/schema-dmx.json

@@ -0,0 +1,29 @@
+{
+	"type":"object",
+	"required":true,
+	"properties":{
+		"output": {
+			"type": "string",
+			"title":"Output path",
+			"propertyOrder" : 1
+		},
+		"output": {
+			"type": "string",
+			"title":"DMX Device Type",
+			"propertyOrder" : 1
+		},
+		"rate": {
+			"type": "integer",
+			"title":"Baudrate",
+			"default": 250000,
+			"propertyOrder" : 2
+		},
+		"delayAfterConnect": {
+			"type": "integer",
+			"title":"Delay after connect",
+			"default": 250,
+			"propertyOrder" : 3
+		}
+	},
+	"additionalProperties": true
+}