fadecandy led device:
implement switchOff methode tidy up code and add doxy comments Former-commit-id: a162e2aae756f8b74b8e65f08740c00f3c820e50
This commit is contained in:
redpanther
parent
7f5a664864
commit
9182dd5af7
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@ -1,87 +1,93 @@
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// Local-Hyperion includes
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#include "LedDeviceFadeCandy.h"
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#include <QHostAddress>
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#include <QString>
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#include <sstream>
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static const unsigned MAX_NUM_LEDS = 512;
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static const unsigned MAX_NUM_LEDS = 512;
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static const unsigned OPC_BROADCAST = 0; // OPC broadcast channel
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static const unsigned OPC_SET_PIXELS = 0; // OPC command codes
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static const unsigned OPC_HEADER_SIZE = 4; // OPC header size
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/* OPC broadcast channel */
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static const unsigned OPC_BROADCAST = 0;
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/* OPC command codes */
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static const unsigned OPC_SET_PIXELS = 0;
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LedDeviceFadeCandy::LedDeviceFadeCandy(const std::string& host, const uint16_t port)
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: _host(host), _port(port)
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LedDeviceFadeCandy::LedDeviceFadeCandy(const std::string& host, const uint16_t port) :
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_host(host), _port(port)
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{
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_opc_data.resize(4);
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_opc_data[0] = OPC_BROADCAST;
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_opc_data[1] = OPC_SET_PIXELS;
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_opc_data[2] = 0;
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_opc_data[3] = 0;
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_opc_data.resize( OPC_HEADER_SIZE );
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_opc_data[0] = OPC_BROADCAST;
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_opc_data[1] = OPC_SET_PIXELS;
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_opc_data[2] = 0;
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_opc_data[3] = 0;
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}
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LedDeviceFadeCandy::~LedDeviceFadeCandy()
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{
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_client.close();
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_client.close();
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}
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bool LedDeviceFadeCandy::isConnected()
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{
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return _client.state() == QAbstractSocket::ConnectedState;
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return _client.state() == QAbstractSocket::ConnectedState;
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}
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bool LedDeviceFadeCandy::tryConnect()
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{
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if ( _client.state() == QAbstractSocket::UnconnectedState ) {
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qDebug("connecting to %s %i",_host.c_str(),_port);
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QHostAddress addr(_host.c_str());
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_client.connectToHost(addr, _port);
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if (_client.waitForConnected(1000))
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qDebug("connected");
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}
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if ( _client.state() == QAbstractSocket::UnconnectedState ) {
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qDebug("connecting to %s %i",_host.c_str(),_port);
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return isConnected();
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_client.connectToHost( _host.c_str(), _port);
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if ( _client.waitForConnected(1000) )
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qDebug("connected");
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}
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return isConnected();
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}
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int LedDeviceFadeCandy::write(const std::vector<ColorRgb> & ledValues)
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int LedDeviceFadeCandy::write( const std::vector<ColorRgb> & ledValues )
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{
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ssize_t nrLedValues = ledValues.size();
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ssize_t led_data_size = nrLedValues*3; // 3 color bytes
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ssize_t opc_data_size = led_data_size +4; // + 4 byte header
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ssize_t nrLedValues = ledValues.size();
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ssize_t led_data_size = nrLedValues * 3; // 3 color bytes
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ssize_t opc_data_size = led_data_size + OPC_HEADER_SIZE;
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if (nrLedValues > MAX_NUM_LEDS)
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{
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std::cerr << "Invalid attempt to write led values. Not more than " << MAX_NUM_LEDS << " leds are allowed." << std::endl;
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return -1;
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}
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if (nrLedValues > MAX_NUM_LEDS)
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{
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std::cerr << "Invalid attempt to write led values. Not more than " << MAX_NUM_LEDS << " leds are allowed." << std::endl;
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return -1;
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}
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if ( opc_data_size != _opc_data.size())
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_opc_data.resize(opc_data_size);
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if ( opc_data_size != _opc_data.size() )
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_opc_data.resize( opc_data_size );
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_opc_data[2] = led_data_size >> 8;
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_opc_data[3] = led_data_size & 0xff;
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_opc_data[2] = led_data_size >> 8;
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_opc_data[3] = led_data_size & 0xff;
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if ( isConnected() || tryConnect() ) {
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u_int16_t idx = 4;
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for (const ColorRgb& color : ledValues)
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{
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_opc_data[idx] = unsigned(color.red);
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_opc_data[idx+1] = unsigned(color.green);
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_opc_data[idx+2] = unsigned(color.blue);
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idx += 3;
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}
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_client.write(_opc_data, opc_data_size);
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}
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uint idx = OPC_HEADER_SIZE;
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for (const ColorRgb& color : ledValues)
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{
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_opc_data[idx ] = unsigned( color.red );
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_opc_data[idx+1] = unsigned( color.green );
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_opc_data[idx+2] = unsigned( color.blue );
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idx += 3;
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}
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return 0;
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return ( transferData()<0 ? -1 : 0 );
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}
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int LedDeviceFadeCandy::transferData()
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{
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if ( isConnected() || tryConnect() )
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return _client.write( _opc_data, _opc_data.size() );
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return -2;
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}
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int LedDeviceFadeCandy::switchOff()
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{
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return 0;
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for ( int idx=OPC_HEADER_SIZE; idx < _opc_data.size(); idx++ )
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_opc_data[idx] = 0;
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return ( transferData()<0 ? -1 : 0 );
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}
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@ -1,55 +1,70 @@
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#pragma once
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// STL includes0
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// STL/Qt includes
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#include <fstream>
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#include <QObject>
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#include <QtNetwork>
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#include <QObject>
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#include <QString>
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#include <QTcpSocket>
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// Leddevice includes
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#include <leddevice/LedDevice.h>
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///
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/// Implementation of the LedDevice that write the led-colors to an
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/// ASCII-textfile('/home/pi/LedDevice.out')
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/// Implementation of the LedDevice interface for sending to
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/// fadecandy/opc-server via network by using the 'open pixel control' protocol.
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///
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class LedDeviceFadeCandy : public QObject,public LedDevice
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class LedDeviceFadeCandy : public QObject, public LedDevice
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{
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Q_OBJECT
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Q_OBJECT
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public:
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///
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/// Constructs the test-device, which opens an output stream to the file
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/// Constructs the LedDevice for fadecandy/opc server
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///
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/// @param host The ip address/host name of fadecandy/opc server
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/// @param port The port to use (fadecandy default is 7890)
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///
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LedDeviceFadeCandy(const std::string& host, const uint16_t port);
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///
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/// Destructor of this test-device
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/// Destructor of the LedDevice; closes the tcp client
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///
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virtual ~LedDeviceFadeCandy();
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///
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/// Writes the given led-color values to the output stream
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/// Writes the led color values to the led-device
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///
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/// @param ledValues The color-value per led
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///
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/// @return Zero on success else negative
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/// @return Zero on succes else negative
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///
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virtual int write(const std::vector<ColorRgb> & ledValues);
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/// Switch the leds off
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virtual int switchOff();
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bool tryConnect();
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bool isConnected();
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//public slots:
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private:
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QTcpSocket _client;
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const std::string _host;
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const uint16_t _port;
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QByteArray _opc_data;
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QTcpSocket _client;
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const std::string _host;
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const uint16_t _port;
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QByteArray _opc_data;
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/// try to establish connection to opc server, if not connected yet
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///
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/// @return true if connection is established
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///
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bool tryConnect();
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/// return the conenction state
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///
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/// @return True if connection established
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///
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bool isConnected();
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/// transfer current opc_data buffer to opc server
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///
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/// @return amount of transfered bytes. -1 error while transfering, -2 error while connecting
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///
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int transferData();
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};
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