c - How communicate with pty via minicom or screen? -

I am trying to provide interface like AT / Modem around some hardware. To open it, I have a server set up by using OpenGL ().

Now I can communicate with the client as expected, which opens the slave and communicates via reading () and writing () calls.

However, I would like to be able to issue commands on the screen or using the Minicom to hand the slaves. However, when trying to do so, the server never receives any data. Is something important from this point?

Then the customer works with app hardware, but Minicom is not very likely that the client app The number of baud rate and stop bits is set correctly (at least those), and you have not asked Minnekom to do so, you have to fix those settings.