Multi serial port application

mrjj

ok. not sure what could be wrong with your linux if you have added
yourself (your username) to dial out group and you are sure that the port exists.

What linux are you using ?

veera

ubuntu 16.04 LTS ,i opened serial port now if i choose the run in terminal its opening please help how to set sudo password in qt instead of choosing run in terminal directly need to open

aha_1980

@veera said in multi serial port application:

ubuntu 16.04 LTS ,i opened serial port now if i choose the run in terminal its opening please help how to set sudo password in qt instead of choosing run in terminal directly need to open

If you need the sudo password than setting yourself into dialout group did not work!

Have your rebooted your PC after you put yourself into dialout?

Hint: call error() when opening the serial port fails to get more information about the error.

jsulm

@aha_1980 @veera Reboot is not needed: just log off and on again after adding yourself to the group.

veera

yes i have rebooted system now opened successfully ......Thank you so much

veera

how to write and read the hexbytes such as unsigned char ch1[] = {0X01,0X04,0X0F} etc from serial port......

mrjj

@veera
Hi
Hex is a notation and not a format.
The bytes are still just bytes.
QByteArray has
QByteArray::fromHex
http://doc.qt.io/qt-5/qbytearray.html#fromHex
and
http://doc.qt.io/qt-5/qbytearray.html#toHex

aha_1980

@jsulm I know :) But it does not hurt either and before explaining what logging out an in again means...

veera

@mrjj ,
Okay thanks i will try it now....