We are using P1021 processor in our project. We are using Quick Engine Slow UCC protocol to implement the full functional UART which uses the pins DTR,DSR,RI.
The DTR,DSR,RI are connected through GPIO pins, which has to be controlled by software. As the hardware flow control will take care of the RTS,CST,CD.
I want to know the sequence how to control the above lines using GPIOS in sequence to communicate with DCE. Please help me with useful links or any source code for this.