hyperion.ng/libsrc/leddevice/dev_serial/ProviderRs232.cpp
2020-08-23 21:02:25 +02:00

298 lines
8.1 KiB
C++

// LedDevice includes
#include <leddevice/LedDevice.h>
#include "ProviderRs232.h"
// qt includes
#include <QSerialPortInfo>
#include <QEventLoop>
#include <chrono>
// Constants
constexpr std::chrono::milliseconds WRITE_TIMEOUT{1000}; // device write timeout in ms
constexpr std::chrono::milliseconds OPEN_TIMEOUT{5000}; // device open timeout in ms
const int MAX_WRITE_TIMEOUTS = 5; // Maximum number of allowed timeouts
const int NUM_POWEROFF_WRITE_BLACK = 2; // Number of write "BLACK" during powering off
ProviderRs232::ProviderRs232(const QJsonObject &deviceConfig)
: LedDevice(deviceConfig)
, _rs232Port(this)
,_baudRate_Hz(1000000)
,_isAutoDeviceName(false)
,_delayAfterConnect_ms(0)
,_frameDropCounter(0)
{
}
bool ProviderRs232::init(const QJsonObject &deviceConfig)
{
bool isInitOK = false;
// Initialise sub-class
if ( LedDevice::init(deviceConfig) )
{
Debug(_log, "DeviceType : %s", QSTRING_CSTR( this->getActiveDeviceType() ));
Debug(_log, "LedCount : %u", this->getLedCount());
Debug(_log, "ColorOrder : %s", QSTRING_CSTR( this->getColorOrder() ));
Debug(_log, "RefreshTime : %d", _refreshTimerInterval_ms);
Debug(_log, "LatchTime : %d", this->getLatchTime());
_deviceName = deviceConfig["output"].toString("auto");
// If device name was given as unix /dev/ system-location, get port name
if ( _deviceName.startsWith(QLatin1String("/dev/")) )
_deviceName = _deviceName.mid(5);
_isAutoDeviceName = _deviceName.toLower() == "auto";
_baudRate_Hz = deviceConfig["rate"].toInt();
_delayAfterConnect_ms = deviceConfig["delayAfterConnect"].toInt(1500);
Debug(_log, "deviceName : %s", QSTRING_CSTR(_deviceName));
Debug(_log, "AutoDevice : %d", _isAutoDeviceName);
Debug(_log, "baudRate_Hz : %d", _baudRate_Hz);
Debug(_log, "delayAfCon ms: %d", _delayAfterConnect_ms);
isInitOK = true;
}
return isInitOK;
}
ProviderRs232::~ProviderRs232()
{
}
int ProviderRs232::open()
{
int retval = -1;
_isDeviceReady = false;
_isInSwitchOff = false;
// open device physically
if ( tryOpen(_delayAfterConnect_ms) )
{
// Everything is OK, device is ready
_isDeviceReady = true;
retval = 0;
}
return retval;
}
int ProviderRs232::close()
{
int retval = 0;
_isDeviceReady = false;
// Test, if device requires closing
if (_rs232Port.isOpen())
{
if ( _rs232Port.flush() )
{
Debug(_log,"Flush was successful");
}
Debug(_log,"Close UART: %s", QSTRING_CSTR(_deviceName) );
_rs232Port.close();
// Everything is OK -> device is closed
}
return retval;
}
bool ProviderRs232::powerOff()
{
// Simulate power-off by writing a final "Black" to have a defined outcome
bool rc = false;
if ( writeBlack( NUM_POWEROFF_WRITE_BLACK ) >= 0 )
{
rc = true;
}
return rc;
}
bool ProviderRs232::tryOpen(int delayAfterConnect_ms)
{
if (_deviceName.isEmpty() || _rs232Port.portName().isEmpty())
{
if (!_rs232Port.isOpen())
{
if ( _isAutoDeviceName )
{
_deviceName = discoverFirst();
if (_deviceName.isEmpty())
{
this->setInError( QString("No serial device found automatically!") );
return false;
}
}
}
_rs232Port.setPortName(_deviceName);
}
if (!_rs232Port.isOpen())
{
Info(_log, "Opening UART: %s", QSTRING_CSTR(_deviceName));
_frameDropCounter = 0;
_rs232Port.setBaudRate( _baudRate_Hz );
Debug(_log, "_rs232Port.open(QIODevice::WriteOnly): %s, Baud rate [%d]bps", QSTRING_CSTR(_deviceName), _baudRate_Hz);
QSerialPortInfo serialPortInfo(_deviceName);
QJsonObject portInfo;
Debug(_log, "portName: %s", QSTRING_CSTR(serialPortInfo.portName()));
Debug(_log, "systemLocation: %s", QSTRING_CSTR(serialPortInfo.systemLocation()));
Debug(_log, "description: %s", QSTRING_CSTR(serialPortInfo.description()));
Debug(_log, "manufacturer: %s", QSTRING_CSTR(serialPortInfo.manufacturer()));
Debug(_log, "productIdentifier: %s", QSTRING_CSTR(QString("0x%1").arg(serialPortInfo.productIdentifier(), 0, 16)));
Debug(_log, "vendorIdentifier: %s", QSTRING_CSTR(QString("0x%1").arg(serialPortInfo.vendorIdentifier(), 0, 16)));
Debug(_log, "serialNumber: %s", QSTRING_CSTR(serialPortInfo.serialNumber()));
if (!serialPortInfo.isNull() )
{
if ( !_rs232Port.open(QIODevice::WriteOnly) )
{
this->setInError(_rs232Port.errorString());
return false;
}
}
else
{
QString errortext = QString("Invalid serial device name: [%1]!").arg(_deviceName);
this->setInError( errortext );
return false;
}
}
if (delayAfterConnect_ms > 0)
{
Debug(_log, "delayAfterConnect for %d ms - start", delayAfterConnect_ms);
// Wait delayAfterConnect_ms before allowing write
QEventLoop loop;
QTimer::singleShot(delayAfterConnect_ms, &loop, &QEventLoop::quit);
loop.exec();
Debug(_log, "delayAfterConnect for %d ms - finished", delayAfterConnect_ms);
}
return _rs232Port.isOpen();
}
void ProviderRs232::setInError(const QString& errorMsg)
{
_rs232Port.clearError();
this->close();
LedDevice::setInError( errorMsg );
}
int ProviderRs232::writeBytes(const qint64 size, const uint8_t *data)
{
DebugIf(_isInSwitchOff, _log, "_inClosing [%d], enabled [%d], _deviceReady [%d], _frameDropCounter [%d]", _isInSwitchOff, this->isEnabled(), _isDeviceReady, _frameDropCounter);
int rc = 0;
if (!_rs232Port.isOpen())
{
Debug(_log, "!_rs232Port.isOpen()");
if ( !tryOpen(OPEN_TIMEOUT.count()) )
{
return -1;
}
}
DebugIf( _isInSwitchOff, _log, "[%s]", QSTRING_CSTR(uint8_t_to_hex_string(data, size, 32)) );
qint64 bytesWritten = _rs232Port.write(reinterpret_cast<const char*>(data), size);
if (bytesWritten == -1 || bytesWritten != size)
{
this->setInError( QString ("Rs232 SerialPortError: %1").arg(_rs232Port.errorString()) );
rc = -1;
}
else
{
if (!_rs232Port.waitForBytesWritten(WRITE_TIMEOUT.count()))
{
if ( _rs232Port.error() == QSerialPort::TimeoutError )
{
Debug(_log, "Timeout after %dms: %d frames already dropped", WRITE_TIMEOUT, _frameDropCounter);
++_frameDropCounter;
// Check,if number of timeouts in a given time frame is greater than defined
// TODO: ProviderRs232::writeBytes - Add time frame to check for timeouts that devices does not close after absolute number of timeouts
if ( _frameDropCounter > MAX_WRITE_TIMEOUTS )
{
this->setInError( QString ("Timeout writing data to %1").arg(_deviceName) );
rc = -1;
}
else
{
//give it another try
_rs232Port.clearError();
}
}
else
{
this->setInError( QString ("Rs232 SerialPortError: %1").arg(_rs232Port.errorString()) );
rc = -1;
}
}
else
{
DebugIf(_isInSwitchOff,_log, "In Closing: bytesWritten [%d], _rs232Port.error() [%d], %s", bytesWritten, _rs232Port.error(), _rs232Port.error() == QSerialPort::NoError ? "No Error" : QSTRING_CSTR(_rs232Port.errorString()) );
}
}
DebugIf(_isInSwitchOff, _log, "[%d], _inClosing[%d], enabled [%d], _deviceReady [%d]", rc, _isInSwitchOff, this->isEnabled(), _isDeviceReady);
return rc;
}
QString ProviderRs232::discoverFirst()
{
// take first available USB serial port - currently no probing!
for (auto const & port : QSerialPortInfo::availablePorts())
{
if (!port.isNull() && !port.isBusy())
{
Info(_log, "found serial device: %s", QSTRING_CSTR(port.portName()));
return port.portName();
}
}
return "";
}
QJsonObject ProviderRs232::discover()
{
QJsonObject devicesDiscovered;
devicesDiscovered.insert("ledDeviceType", _activeDeviceType );
QJsonArray deviceList;
// Discover serial Devices
for (auto &port : QSerialPortInfo::availablePorts() )
{
if ( !port.isNull() )
{
QJsonObject portInfo;
portInfo.insert("description", port.description());
portInfo.insert("manufacturer", port.manufacturer());
portInfo.insert("portName", port.portName());
portInfo.insert("productIdentifier", QString("0x%1").arg(port.productIdentifier(), 0, 16));
portInfo.insert("serialNumber", port.serialNumber());
portInfo.insert("systemLocation", port.systemLocation());
portInfo.insert("vendorIdentifier", QString("0x%1").arg(port.vendorIdentifier(), 0, 16));
deviceList.append(portInfo);
}
}
devicesDiscovered.insert("devices", deviceList);
return devicesDiscovered;
}