since there are SIM cards with fixed IP addresses i believe it should be possible to create a proxy program, running on the GL6110, which can be accessed through a telnet session and which forwards the received input to the target device attached via USB and returns the response from the target device to the telnet client.
- client opens a telnet session and sends an ascii command
- proxy forwards this to the target device which is connected via USB
- proxy reads answer from target device and sends it back to telnet client
i had a look at the tcp_server sample application because i plan to start with it and then extend it with the USB sending/receiving part.
does all this make sense to you? is it doable at all? i’m completely new to embedded software development and m2m topics in general but i was asked to find a solution for this scenario.