I have a problem with my BX3105 development kit (Revision 1.3.0).
When I connect to an access point and use a socket to open a TCP connection to a server that does not have the respective port open, my device starts to get memory problems after 5-10 tries.
What I do:
+CME Error: 906
— This repeats until at one point I get
+CME Error: 902
After this only AT+RST helps getting the device to work properly again.
Checking the heap memory with AT+SYSRAM after each connect I can see that the heap size decreases by 360 bytes each time. When the value reaches 52000 and +CME Error: 902 happens.
I hope someone has an idea. Upgrading my chip to 2.5.0 does not work.