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I’ve got a nimbelink beaglebone cape lite (with a nimbelink NL-SW-LTE-S7648 cell module) plugged into a
beaglebone green. Nothing else is connected. I SSH into the beaglebone and try to communicate with the
module using AT cmds via minicom but no response. I had this working 6 months ago but with a different module - NL-SW-GPRS.
I accidently damaged the module so I decided to switch the more recent NL-SW-LTE-S7648.
I checked to see if the device tree overlay was loaded (dmesg | grep NL-AB-BBCL) but I’m not sure if actually
is. The message I get is different than the cape lite manual shows. I get -
On these newer modem’s the usb interface is enabled, have you tried connecting a usb cable from the cape to the board? you should see a new usb interface show up.
Thanks for your reply.
I tried that as well. Connecting the usb through beaglebone did not work.
Connecting directly windows, Ubuntu or debian did not detect the USB.
It looks as if the cell module is damaged I dont know anyway to determine this?
The cape is set up to communicate via uart4. So I ssh into beaglebone and configure
uart4 to 115200, 8, 1, no flow control.
I never actually tried using usb before until you mentioned it.
So to answer your question, I’m not even getting the simple AT cmd to work. No led indication
of the status of the module, no power led. I dont even know how to begin to
troubleshoot it.
How are you powering the device? Are you using the recommended 12V DC connector?
The modem i have here needs 921600, it’s responding to basic commands:
debian@beaglebone:~$ tio -b 921600 /dev/ttyO4
[tio 18:37:53] tio v1.26
[tio 18:37:53] Press ctrl-t q to quit
[tio 18:37:53] Connected
OK
AT
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK