MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),ui(new Ui::MainWindow),options(new channelOptions(this)),modOptions(new moduleDialog(this)),serialPortOpt(new serialPortOptions(this)),thePlaylist(new playlist(this))//thePlayer(new QMediaPlayer),
{
thePlayer = NULL;
ui->setupUi(this);
playbackRate=1;
serialPortName="COM3";
//serialPortName="/dev/ttyUSB0";
//thePort.setPortName("/dev/ttyACM0");
thePort.setPortName(serialPortName);
thePort.setBaudRate(QSerialPort::Baud9600);
serialOutputOn=0;
connect(ui->label_2,SIGNAL(playScroll(int)),ui->horizontalScrollBar,SLOT(setValue(int)));
connect(ui->label_2,SIGNAL(trackSelected(uint,QColor)),this,SLOT(channelSelected(uint,QColor)));
connect(ui->label_2,SIGNAL(updatePicture(binaryTrack)),ui->label,SLOT(whatToLightUp(binaryTrack)));
connect(ui->label_2,SIGNAL(updatePicture(binaryTrack)),this,SLOT(writeToSerialPort(binaryTrack)));
connect(ui->actionExit,SIGNAL(triggered()),this,SLOT(close()));
connect(options,SIGNAL(removeChannel(int)),this,SLOT(removeChannel(int)));
connect(options,SIGNAL(theColorChanged(uint,QColor)),this,SLOT(channelColorHasChanged(uint,QColor)));
connect(options,SIGNAL(changeEditMode(bool)),ui->label,SLOT(changeEditMode(bool)));
connect(options,SIGNAL(channelEnableButtonPushed(int,bool)),this,SLOT(channelEnabledButtonPushed(int,bool)));
connect(serialPortOpt,SIGNAL(setNewSerialPort(QString)),this,SLOT(serialPortNameChanged(QString)));
connect(thePlaylist,SIGNAL(changeSong(QString)),this,SLOT(playlistChangeSong(QString)));
tempTrackCount=0;
}
int main(void){
/* I searched for this topic and found no real leads so i looked it up.
* Opening the serial port
* First point is to open a connection. Before opening any connection several informations must be acquired.
*
* The name of the serial port.(Usually COM1-COM6 )
* The direction of communication.
* (It is possible to set the communication to an asynchronic mode but it is far mor complex and unintuitive than the synchronic mode used here)
*/
LPCSTR portname = "COM4";
DWORD accessdirection =GENERIC_READ | GENERIC_WRITE;
HANDLE hSerial = CreateFile(portname,
accessdirection,
0,
0,
OPEN_EXISTING,
0,
0);
if (hSerial == INVALID_HANDLE_VALUE) {
//call GetLastError(); to gain more information
printf("Error 1\n");
}
/*
* After opening the port further settings like Baudrate, Byte size, the number of stopbits and the Parity need to be set.
*/
DCB dcbSerialParams = {0};
dcbSerialParams.DCBlength=sizeof(dcbSerialParams);
if (!GetCommState(hSerial, &dcbSerialParams)) {
//could not get the state of the comport
}
dcbSerialParams.BaudRate=9600;
dcbSerialParams.ByteSize=8;
dcbSerialParams.StopBits=ONESTOPBIT;
dcbSerialParams.Parity=NOPARITY;
if(!SetCommState(hSerial, &dcbSerialParams)){
//analyse error
printf("Error 2\n");
}
/* Finally timeouts need to be set so that the program does not hang up when receiving nothing. */
COMMTIMEOUTS timeouts={0};
timeouts.ReadIntervalTimeout=50;
timeouts.ReadTotalTimeoutConstant=50;
timeouts.ReadTotalTimeoutMultiplier=10;
timeouts.WriteTotalTimeoutConstant=50;
timeouts.WriteTotalTimeoutMultiplier=10;
if(!SetCommTimeouts(hSerial, &timeouts)){
//handle error
printf("Error 3\n");
}
{
uint8_t symbol = 'A';
for(symbol = 'A'; symbol <= 'Z'; ++symbol){
(void)writeToSerialPort(hSerial, &symbol, 1);
}
}
/* Closing: when the serial port is not longer needed, it can be freed by closing the associated handle. */
CloseHandle(hSerial);
printf("Hello\n");
} /* main */
