We wish to use the BG77 in a similar way to a GNSS module, with the unit using as little power as possible (so we do not want GSM/ LTE-M communication at all). We would like to take positional data every 6 minutes.
What is the best way to do this, given we also would like to retain hot starts on the unit, and not power down the device.
Thanks
Jeremy
Hello Jeremy Price,
If you just want to use BG77’s GNSS function and send the data back with the GSM/LTE-M function disable, you can use the AT command to register the module on the NB-IOT network. if the module is registered on network, then it will not search/register on other networks.
The command is
AT+QCFG=“iotopmode”,1
AT+QCFG=“nwscanseq”,03
you can check the PDF document
Quectel_BG95&BG77&BG600L_Series_QCFG_AT_Commands_Manual_V1.0
Quectel_BG95&BG77_Network_Searching_Scheme_Introduction_V1.0
Quectel_BG95&BG77&BG600L_Series_QCFG_AT_Commands_Manual_V1.0.pdf (881.6 KB) Quectel_BG95&BG77_Network_Searching_Scheme_Introduction_V1.0.pdf (591.9 KB)
If you want the module to stay in a state of low consumption, then you can make it work in loop like: turn on GNSS - acquire the data - send the data back - turn off GNSS - enter into sleep - wakeup and turn on GNSS.
Hi, thanks for your reply. We are just going back over this. If we are use lte-m only (not NBIOT) then I guess we just register on the LTE-M network and then carry out the same as before