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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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114
libsrc/leddevice/LedDeviceFadeCandy.cpp
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@@ -1,87 +1,93 @@
// Local-Hyperion includes
#include "LedDeviceFadeCandy.h"
#include <QHostAddress>
#include <QString>
#include <sstream>
static const unsigned MAX_NUM_LEDS = 512;
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[0] = OPC_BROADCAST;
_opc_data[1] = OPC_SET_PIXELS;
_opc_data[2] = 0;
_opc_data[3] = 0;
_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();
_client.close();
}
bool LedDeviceFadeCandy::isConnected()
{
return _client.state() == QAbstractSocket::ConnectedState;
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);
if (_client.waitForConnected(1000))
qDebug("connected");
}
if ( _client.state() == QAbstractSocket::UnconnectedState ) {
qDebug("connecting to %s %i",_host.c_str(),_port);
return isConnected();
_client.connectToHost( _host.c_str(), _port);
if ( _client.waitForConnected(1000) )
qDebug("connected");
}
return isConnected();
}
int LedDeviceFadeCandy::write(const std::vector<ColorRgb> & ledValues)
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 nrLedValues = ledValues.size();
ssize_t led_data_size = nrLedValues * 3; // 3 color bytes
ssize_t opc_data_size = led_data_size + OPC_HEADER_SIZE;
if (nrLedValues > MAX_NUM_LEDS)
{
std::cerr << "Invalid attempt to write led values. Not more than " << MAX_NUM_LEDS << " leds are allowed." << std::endl;
return -1;
}
if (nrLedValues > MAX_NUM_LEDS)
{
std::cerr << "Invalid attempt to write led values. Not more than " << MAX_NUM_LEDS << " leds are allowed." << std::endl;
return -1;
}
if ( opc_data_size != _opc_data.size())
_opc_data.resize(opc_data_size);
if ( opc_data_size != _opc_data.size() )
_opc_data.resize( opc_data_size );
_opc_data[2] = led_data_size >> 8;
_opc_data[3] = led_data_size & 0xff;
_opc_data[2] = led_data_size >> 8;
_opc_data[3] = led_data_size & 0xff;
if ( isConnected() || tryConnect() ) {
u_int16_t idx = 4;
for (const ColorRgb& color : ledValues)
{
_opc_data[idx] = unsigned(color.red);
_opc_data[idx+1] = unsigned(color.green);
_opc_data[idx+2] = unsigned(color.blue);
idx += 3;
}
_client.write(_opc_data, opc_data_size);
}
uint idx = OPC_HEADER_SIZE;
for (const ColorRgb& color : ledValues)
{
_opc_data[idx ] = unsigned( color.red );
_opc_data[idx+1] = unsigned( color.green );
_opc_data[idx+2] = unsigned( color.blue );
idx += 3;
}
return 0;
return ( transferData()<0 ? -1 : 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 );
}