Hi,
I have been really pleased with my GSM1400 until today. It has been running sending data to the cloud every hour, on test, for quite a few weeks. Today it suddenly stopped connecting to the GSM network and I cannot get it to reconnect. I have debugged using the GSM test and this comes out:
Connecting GSM network...AT
OK
AT+IPR=921600
OK
AT
OK
AT+UPSV=3
OK
ERROR
Similarly for GPRS ping
AT
OK
AT+IPR=921600
OK
AT
OK
AT+UPSV=3
OK
Not connected
As I said before, tt was running quite happily and then suddenly stopped. The board is running happily without connecting to GSM. I have changed aerial, and changed sim card. Nothing works. Hair is being pulled out!!
Anyone seen similar? Anyone fixed it? Any ideas??
Don't want to spend another £50+ to buy a new one if it's a quick fix.
Thanks in advance