QTimer timeout triggered for multiple times?

[Kanni1303]

I'm creating a UI application for Raspberry PI to read data from sensor on definite timeout (5 seconds). Problem is the QTimer timeout slot is called for multiple times

{   //at system init
readTempCur = new QTimer(this);
connect(readTempCur, SIGNAL(timeout()), this, SLOT(readSensor()));
readTempCur->start(SAMPLINGTIME);
readSensor();   //added to call on boot itself, can be removed
}
void HomePage::readSensor(void) {
   readTempCur->stop();
   qDebug() << "Read Sensor triggerred at " <<QDateTime::currentDateTime().toString();
   //DO my actions
   readTempCur->start(SAMPLINGTIME);
 }

[Christian Ehrlicher]

Are you sure you don't connect the signal twice?
Also qApp->processEvents() is not needed at all. And doing a sleep inside the main thread isn't a good idea even it's only 2ms but this shouldn't be your current problem.

[Kanni1303]

that sleep is conversion time for sensor to process the data

[Christian Ehrlicher]

Please provide a minimal example - your current code doesn't look wrong except the (still unanswered) question for the double connect.

[Kanni1303]

@Christian-Ehrlicher Brilliant! thanks, on some random occasion the sysInit() is called for multiple times which reconnected same slot to same signal once again. I hope fixing that will probably fix this one