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My project is a full program to communicate with a USB modem via serial port. What I am working on now is sending the SMS. What I can’t figure out is what to tell it to actually send the message. I know that in terminal you would hit CTRL-z to send the message. Does anyone know how to do this?
I finally figured it out using a combination of these two websites:
Escape Sequences (C)
ASCII Table
The ASCII escape sequence in C is ‘/xhh’ where hh is the hexadecimal sequence, and the ASCII hex sequence for CTRL-Z is 1A, so it’s just ‘/x1a’.