Carsten Atmolight support

http://ca.rstenpresser.de/index.php/atmo-main.html

libsrc/leddevice/CMakeLists.txt

@@ -30,6 +30,7 @@ SET(Leddevice_HEADERS
 		${CURRENT_SOURCE_DIR}/LedDeviceTest.h
 		${CURRENT_SOURCE_DIR}/LedDeviceHyperionUsbasp.h
 		${CURRENT_SOURCE_DIR}/LedDeviceTpm2.h
+		${CURRENT_SOURCE_DIR}/LedDeviceAtmo.h
 )
 
 SET(Leddevice_SOURCES
@@ -47,6 +48,7 @@ SET(Leddevice_SOURCES
 		${CURRENT_SOURCE_DIR}/LedDeviceHyperionUsbasp.cpp
 		${CURRENT_SOURCE_DIR}/LedDevicePhilipsHue.cpp
 		${CURRENT_SOURCE_DIR}/LedDeviceTpm2.cpp
+		${CURRENT_SOURCE_DIR}/LedDeviceAtmo.cpp
 )
 
 if(ENABLE_SPIDEV)

libsrc/leddevice/LedDeviceAtmo.cpp

@@ -0,0 +1,44 @@
+
+// STL includes
+#include <cstring>
+#include <cstdio>
+#include <iostream>
+
+// Linux includes
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+// hyperion local includes
+#include "LedDeviceAtmo.h"
+
+LedDeviceAtmo::LedDeviceAtmo(const std::string& outputDevice, const unsigned baudrate) :
+	LedRs232Device(outputDevice, baudrate),
+	_ledBuffer(0)
+{
+	_ledBuffer.resize(4 + 3*5);
+	_ledBuffer[0] = 0xFF; // Startbyte
+	_ledBuffer[1] = 0x00; // StartChannel(Low)
+	_ledBuffer[2] = 0x00; // StartChannel(High)
+	_ledBuffer[3] = 0x0F; // Number of Databytes send (always! 15)
+}
+
+int LedDeviceAtmo::write(const std::vector<ColorRgb> &ledValues)
+{
+        // The protocol is shomehow limited. we always need to send exactly 5 channels + header
+        // (19 bytes) for the hardware to recognize the data
+        if (ledValues.size() != 5)
+        {
+                printf("AtmoLight: %d channels configured. This should always be 5!\n", ledValues.size());
+                return 0;
+        }
+
+	// write data
+	memcpy(4 + _ledBuffer.data(), ledValues.data(), ledValues.size() * 3);
+	return writeBytes(_ledBuffer.size(), _ledBuffer.data());
+}
+
+int LedDeviceAtmo::switchOff()
+{
+	memset(4 + _ledBuffer.data(), 0, _ledBuffer.size() - 4);
+	return writeBytes(_ledBuffer.size(), _ledBuffer.data());
+}

libsrc/leddevice/LedDeviceAtmo.h

@@ -0,0 +1,38 @@
+#pragma once
+
+// STL includes
+#include <string>
+
+// hyperion incluse
+#include "LedRs232Device.h"
+
+///
+/// Implementation of the LedDevice interface for writing to serial device using tpm2 protocol.
+///
+class LedDeviceAtmo : public LedRs232Device
+{
+public:
+	///
+	/// Constructs the LedDevice for attached serial device using supporting tpm2 protocol
+	/// All LEDs in the stripe are handled as one frame
+	///
+	/// @param outputDevice The name of the output device (eg '/dev/ttyAMA0')
+	/// @param baudrate The used baudrate for writing to the output device
+	///
+	LedDeviceAtmo(const std::string& outputDevice, const unsigned baudrate);
+
+	///
+	/// 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);
+
+	/// Switch the leds off
+	virtual int switchOff();
+
+private:
+	/// The buffer containing the packed RGB values
+	std::vector<uint8_t> _ledBuffer;
+};

libsrc/leddevice/LedDeviceFactory.cpp

@@ -30,6 +30,7 @@
 #include "LedDeviceHyperionUsbasp.h"
 #include "LedDevicePhilipsHue.h"
 #include "LedDeviceTpm2.h"
+#include "LedDeviceAtmo.h"
 
 #ifdef ENABLE_WS2812BPWM
 	#include "LedDeviceWS2812b.h"
@@ -186,6 +187,15 @@ LedDevice * LedDeviceFactory::construct(const Json::Value & deviceConfig)
 		deviceTpm2->open();
 		device = deviceTpm2;
 	}
+	else if (type == "atmo")
+	{
+		const std::string output = deviceConfig["output"].asString();
+		const unsigned rate = 38400;
+
+		LedDeviceAtmo * deviceAtmo = new LedDeviceAtmo(output, rate);
+		deviceAtmo->open();
+		device = deviceAtmo;
+	}
 #ifdef ENABLE_WS2812BPWM
 	else if (type == "ws2812b")
 	{