I am trying to write a string command to the serial port of my Raspberry Pi 2 B without success. I followed this http://www.raspberry-projects.com/pi/programming-in-c/uart-serial-port/using-the-uart, but I need to send and receive QStrings (or arrays of bytes). Are there specific c++ functions that send and receive strings through the RPi Serial Port? Could someone share some sample code? Many thanks in advance!
Andrea
If you look at the QString docs you will see a number of methods that convert QString to other types. QString is just a wrapper around a character string.
To get at the underlying char buffer you can do something like this:
std::string stdStr = qString.toStdString();
char* buffer = stdStr.c_str();
Make sure that stdStr stays in scope as long as you wish to use buffer otherwise you will end up using a pointer that points to deallocated memory.
