hyperion.ng/libsrc/leddevice/LedRs232Device.h

73 lines
1.6 KiB
C++

#pragma once
#include <QObject>
#include <QSerialPort>
// Leddevice includes
#include <leddevice/LedDevice.h>
///
/// The LedRs232Device implements an abstract base-class for LedDevices using a RS232-device.
///
class LedRs232Device : public LedDevice
{
Q_OBJECT
public:
///
/// Constructs the LedDevice attached to a RS232-device
///
/// @param[in] outputDevice The name of the output device (eg '/etc/ttyS0')
/// @param[in] baudrate The used baudrate for writing to the output device
///
LedRs232Device(const std::string& outputDevice, const unsigned baudrate, int delayAfterConnect_ms = 0);
///
/// Destructor of the LedDevice; closes the output device if it is open
///
virtual ~LedRs232Device();
///
/// Opens and configures the output device
///
/// @return Zero on succes else negative
///
int open();
protected:
/**
* Writes the given bytes to the RS232-device and
*
* @param[in[ size The length of the data
* @param[in] data The data
*
* @return Zero on succes else negative
*/
int writeBytes(const unsigned size, const uint8_t *data);
private slots:
/// Unblock the device after a connection delay
void unblockAfterDelay();
void error(QSerialPort::SerialPortError error);
private:
// tries to open device if not opened
bool tryOpen();
/// The name of the output device
const std::string _deviceName;
/// The used baudrate of the output device
const qint32 _baudRate_Hz;
/// Sleep after the connect before continuing
int _delayAfterConnect_ms;
/// The RS232 serial-device
QSerialPort _rs232Port;
bool _blockedForDelay;
bool _stateChanged;
};