my comapany has build an big amount devices with an SL8083 on it, until now everything is fine and it has worked perfect.
But with the current Modules we have a problems to communicate with AT-Cmds over the USB interface.
I allready tried to connect the SL8083 to the PC and they genereate tree virtual COM-Ports (CNS/DM/AT), but if I try to send any AT-Command (e.g. “ati3”) nothing happens.
Not all SL8083 modules have this problem, but some.
What can I do, to get the devices working.
Because an FW-update via USB seems to not working, as well
Are different SW-/HW- Revisions out ?
Because all devices which not working correct have a kind of low S/N to the working ones,e.g:
3)I also recognized that the devices have different PIDs.
The not working ones have PID_683C and the working ones have PID_68A3
Could this be a problem or maybe this is a replica?
I’m looking forward you able to help me and many thanks in advanced.