I am communicating with DCE via RS232 using win32 api’s. One of my tasks is to send new firmware to the DCE essentially a string of ascii characters about 120 kb long. The DCE will send the Xoff when its buffer is full but transmission is not stopping from the DTE. I have verified that I can set Xon/Xoff flow control and Xon/Xoff characters are not placed in the input que. Is software flow control auotomatic or I have to respond to some predefined event? Where do the Xon/Xoff characters go if not the input que and what flags (if any) get set when they are recieved?
