Dear Sir, Thanks for replying .Your suggestion was of great help.It helped me understand a major part of code. I have another query
1. We are not using tapdev for read and send rather we are using SLIP protocol for communication.How can we test our system using exapmle1 as application program. 2.We are using At89c5132 microcontroller.We have 1 UART on our controller. Then for SLIP protocol what will be the test condition. Will it be tested on two controllers connected using serial cable or a controller connected to PC. 3. Will the application for testing will be different on two controllers if it is to be tested on two controllers using serial cable. Regards