EHS6 Power On Sequence | Telit Cinterion IoT Developer Community
July 2, 2020 - 8:33am, 1698 views
Hi
We are using EHS6 module with one microcontroller running on 2MHZ/48Mhz clock speed based on our requirement. So, Sometimes when we switch clock speed of the controller EHS6 stops transmitting/receiving the commands on UART. All though we are using the baud rate based on the clock speed.
Can you share the power on sequece of the EHs6 module. I think we are missing something in power on sequence.
Here are the logs of the problem statement
^SYSLOADING
^SYSSTART
ATE1
OK
+PBREADY
+STKPRO: 05,19
^SYSLOADING
^SYSSTART
ATE1
OK
+PBREADY
+STKPRO: 05,19
@ÿ
^SYSLOADING
^SYSSTART
ATE1
OK
+PBREADY
+STKPRO: 05,19
ÿ
^SYSLOADING
^SYSSTART
ATE1
OK
Hello,
Please check with AT^SPOW? if power saving is not active on UART. Maybe this is causing issues. Is hardware flow control used and RTS/CTS lines connected?
BTW I can see 'STKPRO' URCs - you are using Remote-SAT Interface.
As for power on sequece I believe you should find what you need in the hardware interface description document. If you don't have it you can find one here: https://iot-developer.thalesgroup.com/documentation/download-documentati...
Regards,
Bartłomiej
Hi Bartłomiej,
I don't know about Remote-SAT Interface. As far as i am concerned i have never configured AT^SSTA. Do you think it can create some problems?
If explicit response mode is enabled you need to handle all commands and responses transmitted to or from the SIM or USIM. In automatic response mode (enabled by default) all is done automatically. Please check AT^SSTA? answer. If the first parameter is 2 you should switch Remote-SAT off with AT^SSTA=0.
Do you think this can create a problem in setting up TCP connection or in Registration?
Rather not but I can't be sure. It's better to switch it off if not used. As I have written before if you don't use this feature you should not activate explicit response mode as it requires your application to answer to the communication from SIM applications. BTW it is also possible that there is some applet running on the SIM which is not say compatible with the module. I'm not really an expert on SAT but looking on this "+STKPRO: 05,19" URC I can't find <EventList> 19 in AT commands spec.