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fadecandy led device:

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implement switchOff methode
tidy up code and add doxy comments


Former-commit-id: a162e2aae756f8b74b8e65f08740c00f3c820e50
This commit is contained in:
redpanther 2016-01-04 14:29:47 +01:00
parent 7f5a664864
commit 9182dd5af7
2 changed files with 97 additions and 76 deletions
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48
libsrc/leddevice/LedDeviceFadeCandy.cpp
View File

@ -1,44 +1,40 @@
// Local-Hyperion includes
#include "LedDeviceFadeCandy.h"
#include <QHostAddress>
#include <QString>
#include <sstream>
static const unsigned MAX_NUM_LEDS = 512;
static const unsigned OPC_BROADCAST = 0; // OPC broadcast channel
static const unsigned OPC_SET_PIXELS = 0; // OPC command codes
static const unsigned OPC_HEADER_SIZE = 4; // OPC header size
/* OPC broadcast channel */
static const unsigned OPC_BROADCAST = 0;
/* OPC command codes */
static const unsigned OPC_SET_PIXELS = 0;
LedDeviceFadeCandy::LedDeviceFadeCandy(const std::string& host, const uint16_t port)
: _host(host), _port(port)
LedDeviceFadeCandy::LedDeviceFadeCandy(const std::string& host, const uint16_t port) :
_host(host), _port(port)
{
_opc_data.resize(4);
_opc_data.resize( OPC_HEADER_SIZE );
_opc_data[0] = OPC_BROADCAST;
_opc_data[1] = OPC_SET_PIXELS;
_opc_data[2] = 0;
_opc_data[3] = 0;
}
LedDeviceFadeCandy::~LedDeviceFadeCandy()
{
_client.close();
}
bool LedDeviceFadeCandy::isConnected()
{
return _client.state() == QAbstractSocket::ConnectedState;
}
bool LedDeviceFadeCandy::tryConnect()
{
if ( _client.state() == QAbstractSocket::UnconnectedState ) {
qDebug("connecting to %s %i",_host.c_str(),_port);
QHostAddress addr(_host.c_str());
_client.connectToHost(addr, _port);
_client.connectToHost( _host.c_str(), _port);
if ( _client.waitForConnected(1000) )
qDebug("connected");
}
@ -51,7 +47,7 @@ int LedDeviceFadeCandy::write(const std::vector<ColorRgb> & ledValues)
{
ssize_t nrLedValues = ledValues.size();
ssize_t led_data_size = nrLedValues * 3; // 3 color bytes
ssize_t opc_data_size = led_data_size +4; // + 4 byte header
ssize_t opc_data_size = led_data_size + OPC_HEADER_SIZE;
if (nrLedValues > MAX_NUM_LEDS)
{
@ -65,8 +61,7 @@ int LedDeviceFadeCandy::write(const std::vector<ColorRgb> & ledValues)
_opc_data[2] = led_data_size >> 8;
_opc_data[3] = led_data_size & 0xff;
if ( isConnected() || tryConnect() ) {
u_int16_t idx = 4;
uint idx = OPC_HEADER_SIZE;
for (const ColorRgb& color : ledValues)
{
_opc_data[idx ] = unsigned( color.red );
@ -74,14 +69,25 @@ int LedDeviceFadeCandy::write(const std::vector<ColorRgb> & ledValues)
_opc_data[idx+2] = unsigned( color.blue );
idx += 3;
}
_client.write(_opc_data, opc_data_size);
return ( transferData()<0 ? -1 : 0 );
}
return 0;
int LedDeviceFadeCandy::transferData()
{
if ( isConnected() || tryConnect() )
return _client.write( _opc_data, _opc_data.size() );
return -2;
}
int LedDeviceFadeCandy::switchOff()
{
return 0;
for ( int idx=OPC_HEADER_SIZE; idx < _opc_data.size(); idx++ )
_opc_data[idx] = 0;
return ( transferData()<0 ? -1 : 0 );
}

47
libsrc/leddevice/LedDeviceFadeCandy.h
View File

@ -1,55 +1,70 @@
#pragma once
// STL includes0
// STL/Qt includes
#include <fstream>
#include <QObject>
#include <QtNetwork>
#include <QObject>
#include <QString>
#include <QTcpSocket>
// Leddevice includes
#include <leddevice/LedDevice.h>
///
/// Implementation of the LedDevice that write the led-colors to an
/// ASCII-textfile('/home/pi/LedDevice.out')
/// Implementation of the LedDevice interface for sending to
/// fadecandy/opc-server via network by using the 'open pixel control' protocol.
///
class LedDeviceFadeCandy : public QObject, public LedDevice
{
Q_OBJECT
public:
///
/// Constructs the test-device, which opens an output stream to the file
/// Constructs the LedDevice for fadecandy/opc server
///
/// @param host The ip address/host name of fadecandy/opc server
/// @param port The port to use (fadecandy default is 7890)
///
LedDeviceFadeCandy(const std::string& host, const uint16_t port);
///
/// Destructor of this test-device
/// Destructor of the LedDevice; closes the tcp client
///
virtual ~LedDeviceFadeCandy();
///
/// Writes the given led-color values to the output stream
/// Writes the led color values to the led-device
///
/// @param ledValues The color-value per led
///
/// @return Zero on success else negative
/// @return Zero on succes else negative
///
virtual int write(const std::vector<ColorRgb> & ledValues);
/// Switch the leds off
virtual int switchOff();
bool tryConnect();
bool isConnected();
//public slots:
private:
QTcpSocket _client;
const std::string _host;
const uint16_t _port;
QByteArray _opc_data;
/// try to establish connection to opc server, if not connected yet
///
/// @return true if connection is established
///
bool tryConnect();
/// return the conenction state
///
/// @return True if connection established
///
bool isConnected();
/// transfer current opc_data buffer to opc server
///
/// @return amount of transfered bytes. -1 error while transfering, -2 error while connecting
///
int transferData();
};