The problem has been fixed! Apparently, the device was waiting for an end-line terminator, which was not available in char write_buffer[] = 'READ?' ; Therefore when it received such a command, the bus would 'hang' and in order for it to work again one would have to open the port again. This also explains why the echo 'READ?' >/dev/ttyUSB0 command worked - since it automatically outputs an end-line terminator.

I attach the working code below - thank you everyone for your commments and kind help!

@KubaOber At the other end of the spectrum one can say that Qt is so large and all-encompassing in what it does that there's a question of whether it's even worth using. I have seen Qt brought in as a dependency on projects which only used it for a very small portion of the functionality (for example: basic data structures, which are far more sensibly implemented using STL) and basically the price you pay is bloat. I figure it's easier to hold on to your sanity doing it this way. It's building your car from scratch rather than being at the mercy of the manufacturer for replacement parts – May 14 '14 at 2:18 •. @StevenLu Qt is quite usable even if you don't bring in the entire modules, but just selected parts of them. This is, generally, done automatically if you statically link the Qt library to your executable. As an extra bonus, you can certainly include only certain Qt source files in your project, just like Qt does when it bootstraps itself.

On Windows, a completely statically compiled hello world that uses QString, QTextStream on a stdout from cstdio, without threading support, with no dependencies on any runtimes, is around 800kb without trying super hard. – May 14 '14 at 9:53 •. Pokemon Mini Games. Brusca Y Brusca Invertebrados Pdf Espaol.

I have checked that the serial communication works correctly. Setting serial port interruption in linux. The code below is working on Linux compiled with gcc. Reading from USB serial port under Cygwin. Up vote 6 down vote favorite. I am actually using Cygwin. Selawat Keatas Nabi Pdf. Why can't I connect to my Linux bluetooth serial port?