Implement ftdi apa102 device

CMakeLists.txt

@@ -38,6 +38,7 @@ SET ( DEFAULT_BONJOUR                     ON  )
 SET ( DEFAULT_MQTT                        ON  )
 SET ( DEFAULT_STATIC_QT_PLUGINS           OFF )
 SET ( DEFAULT_PRECOMPILED_HEADERS         ON  )
+SET ( DEFAULT_ENABLE_FTDIDEV           	  OFF )
 
 # Configure CCache if available
 find_program(CCACHE_FOUND ccache)
@@ -326,6 +327,9 @@ colorMe("ENABLE_SPIDEV = " ${ENABLE_SPIDEV})
 option(ENABLE_WS281XPWM "Enable the WS281x-PWM device" ${DEFAULT_WS281XPWM} )
 colorMe("ENABLE_WS281XPWM = " ${ENABLE_WS281XPWM})
 
+option(ENABLE_FTDIDEV "Enable the FTDI device" ${DEFAULT_ENABLE_FTDIDEV})
+colorMe("ENABLE_FTDIDEV = " ${ENABLE_FTDIDEV})
+
 message( STATUS "\n${CyanColor}SOFTWARE GRABBERS${ColorReset}")
 
 option(ENABLE_DX "Enable Windows DirectX 11 system grabber" ${DEFAULT_DX})

sources/leddevice/CMakeLists.txt

@@ -18,6 +18,7 @@ include_directories(
 	dev_spi
 	dev_rpi_pwm
 	dev_tinker
+	dev_ftdi
 )
 
 FILE ( GLOB Leddevice_SOURCES
@@ -43,6 +44,10 @@ if ( ENABLE_SPIDEV )
 	FILE ( GLOB Leddevice_SPI_SOURCES "${CURRENT_SOURCE_DIR}/dev_spi/*.h" "${CURRENT_SOURCE_DIR}/dev_spi/*.cpp")
 endif()
 
+if (ENABLE_FTDIDEV)
+	FILE ( GLOB Leddevice_FTDI_SOURCES "${CURRENT_SOURCE_DIR}/dev_ftdi/*.h" "${CURRENT_SOURCE_DIR}/dev_ftdi/*.cpp")
+endif()
+
 if ( ENABLE_WS281XPWM )
 	include_directories(../../dependencies/external/rpi_ws281x)
 	FILE ( GLOB Leddevice_PWM_SOURCES "${CURRENT_SOURCE_DIR}/dev_rpi_pwm/*.h" "${CURRENT_SOURCE_DIR}/dev_rpi_pwm/*.cpp")
@@ -58,6 +63,7 @@ SET( Leddevice_SOURCES
 	${Leddevice_TINKER_SOURCES}
 	${Leddevice_SPI_SOURCES}
 	${Leddevice_PWM_SOURCES}
+	${Leddevice_FTDI_SOURCES}
 )
 
 # auto generate header file that include all available leddevice headers
@@ -124,3 +130,21 @@ endif()
 if(USE_PRECOMPILED_HEADERS AND COMMAND target_precompile_headers)
     target_precompile_headers(leddevice REUSE_FROM precompiled_hyperhdr_headers)
 endif()
+
+
+# if(ENABLE_WS281XPWM)
+# 	add_library(ws281x
+# 		${CMAKE_CURRENT_SOURCE_DIR}/external/rpi_ws281x/mailbox.c ${CMAKE_CURRENT_SOURCE_DIR}/external/rpi_ws281x/ws2811.c
+# 		${CMAKE_CURRENT_SOURCE_DIR}/external/rpi_ws281x/pwm.c ${CMAKE_CURRENT_SOURCE_DIR}/external/rpi_ws281x/dma.c
+# 		${CMAKE_CURRENT_SOURCE_DIR}/external/rpi_ws281x/pcm.c
+# 		${CMAKE_CURRENT_SOURCE_DIR}/external/rpi_ws281x/rpihw.c)
+# endif()
+
+
+if( ENABLE_FTDIDEV )
+	FIND_PACKAGE(PkgConfig REQUIRED)
+	pkg_check_modules(LIB_FTDI REQUIRED libftdi1)
+	add_library(libftdi1 SHARED IMPORTED)
+	target_include_directories(leddevice PUBLIC ${LIB_FTDI_INCLUDE_DIRS})
+	target_link_libraries(leddevice ${LIB_FTDI_LINK_LIBRARIES})
+endif()

sources/leddevice/LedDevice.cpp

@@ -49,8 +49,6 @@ void LedDevice::start()
 {
 	Info(_log, "Start LedDevice '%s'.", QSTRING_CSTR(_activeDeviceType));
 
-	close();
-
 	_isDeviceInitialised = false;
 	// General initialisation and configuration of LedDevice
 	if (init(_devConfig))

sources/leddevice/LedDeviceSchemas.qrc

@@ -36,5 +36,6 @@
 		<file alias="schema-yeelight">schemas/schema-yeelight.json</file>
 		<file alias="schema-cololight">schemas/schema-cololight.json</file>
 		<file alias="schema-awa_spi">schemas/schema-awa_spi.json</file>
+		<file alias="schema-apa102_ftdi">schemas/schema-apa102_ftdi.json</file>
 	</qresource>
 </RCC>

sources/leddevice/dev_ftdi/LedDeviceAPA102_ftdi.cpp

@@ -0,0 +1,62 @@
+#include "LedDeviceAPA102_ftdi.h"
+
+
+LedDeviceAPA102_ftdi::LedDeviceAPA102_ftdi(const QJsonObject &deviceConfig) : ProviderFtdi(deviceConfig)
+{
+}
+
+LedDevice *LedDeviceAPA102_ftdi::construct(const QJsonObject &deviceConfig)
+{
+	return new LedDeviceAPA102_ftdi(deviceConfig);
+}
+
+bool LedDeviceAPA102_ftdi::init(const QJsonObject &deviceConfig)
+{
+	bool isInitOK = false;
+
+	// Initialise sub-class
+	if (ProviderFtdi::init(deviceConfig))
+	{
+		CreateHeader();
+		isInitOK = true;
+	}
+	return isInitOK;
+}
+
+void LedDeviceAPA102_ftdi::CreateHeader()
+{
+	const unsigned int startFrameSize = 4;
+	const unsigned int endFrameSize = qMax<unsigned int>(((_ledCount + 15) / 16), 4);
+	const unsigned int APAbufferSize = (_ledCount * 4) + startFrameSize + endFrameSize;
+
+	_ledBuffer.resize(0, 0xFF);
+	_ledBuffer.resize(APAbufferSize, 0xFF);
+	_ledBuffer[0] = 0x00;
+	_ledBuffer[1] = 0x00;
+	_ledBuffer[2] = 0x00;
+	_ledBuffer[3] = 0x00;
+
+	Debug(_log, "APA102 buffer created. Led's number: %d", _ledCount);
+}
+
+int LedDeviceAPA102_ftdi::write(const std::vector<ColorRgb> &ledValues)
+{
+	if (_ledCount != ledValues.size())
+	{
+		Warning(_log, "APA102 led's number has changed (old: %d, new: %d). Rebuilding buffer.", _ledCount, ledValues.size());
+		_ledCount = ledValues.size();
+
+		CreateHeader();
+	}
+
+	for (signed iLed = 0; iLed < static_cast<int>(_ledCount); ++iLed)
+	{
+		const ColorRgb &rgb = ledValues[iLed];
+		_ledBuffer[4 + iLed * 4 + 0] = 0xFF;
+		_ledBuffer[4 + iLed * 4 + 1] = rgb.red;
+		_ledBuffer[4 + iLed * 4 + 2] = rgb.green;
+		_ledBuffer[4 + iLed * 4 + 3] = rgb.blue;
+	}
+
+	return writeBytes(_ledBuffer.size(), _ledBuffer.data());
+}

sources/leddevice/dev_ftdi/LedDeviceAPA102_ftdi.h

@@ -0,0 +1,47 @@
+#ifndef LEDEVICET_APA102_H
+#define LEDEVICET_APA102_H
+#include "ProviderFtdi.h"
+
+class LedDeviceAPA102_ftdi : public ProviderFtdi
+{
+	Q_OBJECT
+
+public:
+
+	///
+	/// @brief Constructs an APA102 LED-device
+	///
+	/// @param deviceConfig Device's configuration as JSON-Object
+	///
+	explicit LedDeviceAPA102_ftdi(const QJsonObject& deviceConfig);
+
+	///
+	/// @brief Constructs the LED-device
+	///
+	/// @param[in] deviceConfig Device's configuration as JSON-Object
+	/// @return LedDevice constructed
+	static LedDevice* construct(const QJsonObject& deviceConfig);
+
+private:
+
+	///
+	/// @brief Initialise the device's configuration
+	///
+	/// @param[in] deviceConfig the JSON device configuration
+	/// @return True, if success
+	///
+	bool init(const QJsonObject& deviceConfig) override;
+
+	void CreateHeader();
+
+	///
+	/// @brief Writes the RGB-Color values to the LEDs.
+	///
+	/// @param[in] ledValues The RGB-color per LED
+	/// @return Zero on success, else negative
+	///
+	int write(const std::vector<ColorRgb>& ledValues) override;
+
+};
+
+#endif // LEDEVICET_APA102_H