3G Module AT commands SIM problem
We are using the Huawei MU509 3G Module in the AM335x TI processor.
When we turn ON the 3G Module it is working fine and USB core driver understand the device as a
We can able to send and receive the AT commands via USB and UART. But we cant access the
SIM interface.Please see the following response
+CME ERROR: SIM failure
please help me to solve this problem.