My board has a Flash card (SD type) and an Ethernet interface. I want to run a Telnet client on my PC and transmit some command like DELETE file, TYPE file and others. All command are processed by function tnet_process_cmd() (see RL-ARM). The problem is that I cannot wait too much time inside this function when processing a command like "TYPE file". This command may take several seconds to be completed and this would stop the communication. What to do in this case ?