QSerialPortInfo have different result on WIN/MAC ?

saito

Dear Sirs,

I am trying to find com port by PID/VID on WIN and MAC by QSerialPortInfo.
It works fine on WIN, but on MAC system, it will reply same device twice?

auto allInfo = QSerialPortInfo::availablePorts();
for (int i = 0; i < allInfo.size(); i++)
{
  auto desc = allInfo[i].description().toStdString();
  auto cdesc = desc.c_str();
  auto vid = allInfo[i].vendorIdentifier();
  auto pid = allInfo[i].productIdentifier();
  printf("%s\r\n", cdesc);
}

The result on WIN is :
incoming port - Bluetooth-Incoming-Port

The result on MAC is:
incoming port - Bluetooth-Incoming-Port
incoming port - Bluetooth-Incoming-Port

MAC will show same device twice, why ?

Currently I always choose first one, it looks OK for now , but is it correct ?

Thanks for any comment.

kuzulis

Please provide full info, e.g. use the {c}enumerator example. And a OSX version.

saito

Dear @kuzulis ,

The enumeration method is "QSerialPortInfo::availablePorts()".

When there are only one serial port device on my MAC, the size report 2.
Then I print out the content of allInfo, I can see it show same device name twice.

The OS version is 10.11.4(El Capitan) MacBook.

The same code running on my WIN7 will not show duplicate name.

Thank you.

kuzulis

Did you hear me? If you want to get any help, please provide a specific output from the cenumerator example. Make what is asked. Also specify a Qt version too.

PS: Here are no telepathists.

[Edited out a sharp-ish comment. ~kshegunov]

saito

Dear @kuzulis ,

I am sorry cause any confusing, due to my low knowledge I think I misunderstood your question.
I didn't realize you are talking about the Qt serial port example "cenumerator",
I though you were asking me how to enumerate serial port in C, sorry.

After finding the correct cenumerator example code, I understand that there are two similar com port in /dev/cu and /dev/tty, this is why I always see two identical port name in MAC.

Thank you for the help, appreciate that ~