LTE strength

tom · 25 Mar 2021, 21:07

You can use a variety of AT commands in order to read / write to the modem. One command that we often use to query signal strength is AT+QENG="servingcell". You can send this command and read the output to the terminal all in a single command using echo -ne "AT+QENG=\"servingcell\"\r" | busybox microcom -t 1000 /dev/ttyUSB2.

Aldo Castro Freire · 31 Mar 2021, 19:52

thank you I will try that

Aldo Castro Freire · 12 Apr 2021, 16:55

@tom said in LTE strength:

busybox microcom -t 1000 /dev/ttyUSB2.

Hi just one question what does this mean ? : busybox microcom -t 1000 /dev/ttyUSB2

tom · 12 Apr 2021, 16:59

@Aldo-Castro-Freire microcom is a program that can be used to talk to devices over a serial port (/dev/ttyUSB2). It handles sending AT commands to the modem cleanly.

Aldo Castro Freire · 12 Apr 2021, 17:05

I also have another modem that is 5g that I would like to connect to the microusb? what device would that be ? it would be ttyUSB1 ?

tom · 12 Apr 2021, 17:29

What 5g modem are you attempting to use? The drivers would need to be integrated into the kernel in order for it to be recognized.

Aldo Castro Freire · 1 Nov 2021, 19:39

I am getting "ERROR" when running this command

tom · 2 Nov 2021, 16:42

Check here for Sierra's AT command documentation: https://source.sierrawireless.com/resources/airprime/software/airprime_wpx5xx_wp76xx_wp77xx_at_command_reference/

Aldo Castro Freire · 3 Nov 2021, 18:07

I am not sure but none of the commands are running.
Also, it does not have the command AT+QENG for me to check out

tom · 3 Nov 2021, 18:36

Can you show an example output of what you are seeing? Also, which modem are you using?