El controlador de puerto serie por USB que propone Mbed no me funciona

y requiero ingresar comandos AT, existe algún lugar donde pueda obtener controladores mi placa es MTDOT 915?

HI civerc17

are you able to post your question in English? You are much more likely to get a response if you do, as the number of people who can understand your problem will be much bigger.

Regards
Anna