No simcard power in EHS5-E | Telit Cinterion IoT Developer Community
January 26, 2017 - 12:26pm, 1483 views
Hello!
We can't get any communication from EHS5-E to simcard. Module is activated, I can scan network, access GPIO, but no simcard features. There are no voltage on CVCC, no CCLK CCIO signals on EHS5-E pins during trying to access to simcard, for example:
AT+CR?
+CME ERROR: SIM not inserted
It seems like something in module is turned off and it even doesn't try to reach simcard. Are there any steps required to activate power of simcard? I don't think it's hardware problem.
Marcin
Hello,
There is no software switch for SIM interface for this module. Have you tried to oscilloscope these lines from the moment of booting?
What hardware are you using - is it some developer board or your own hardware?
Regards,
Bartłomiej