Using mikroe "LTE IoT Click" aka u-blox SARA-R410M-02B with native serial UART

[Alexander Dahl]

Hei hei,

> Try to do something like this:
> 
>         $ sudo vim /lib/udev/rules.d/78-mm-whitelist-platform-modem.rules
>             ACTION!="add|change|move", GOTO="mm_whitelist_platform_modem_end"
>            DEVPATH=="/devices/platform/ahb/ahb:apb/f8024000.serial/atmel_usart_serial.1.auto/tty/ttyAT2",
> ENV{ID_MM_DEVICE_PROCESS}="1"
>             LABEL="mm_whitelist_platform_modem_end"

I put that into /etc/udev/rules.d and added 'ENV{ID_MM_TTY_BAUDRATE}="115200"' otherwise the device would not answer and guess what, the modem is recognized now:

root at DistroKit:~ mmcli -m 0
  --------------------------------
  General  |                 path: /org/freedesktop/ModemManager1/Modem/0
           |            device id: ***
  --------------------------------
  Hardware |         manufacturer: u-blox
           |                model: SARA-R410M-02B
           |    firmware revision: L0.0.00.00.05.08 [Apr 17 2019 19:34:02]
           |            supported: gsm-umts, lte
           |              current: gsm-umts, lte
           |         equipment id: ***************
  --------------------------------
  System   |               device: /sys/devices/platform/ahb/ahb:apb/f8024000.serial/atmel_usart_serial.1.auto
           |              drivers: atmel_usart_serial
           |               plugin: u-blox
           |         primary port: ttyAT2
           |                ports: ttyAT2 (at)
  --------------------------------
  Numbers  |                  own: +4917600000000
  --------------------------------
  Status   |                state: disabled
           |          power state: on
           |       signal quality: 0% (cached)
  --------------------------------
  Modes    |            supported: allowed: any; preferred: none
           |              current: allowed: any; preferred: none
  --------------------------------
  Bands    |            supported: eutran-1, eutran-2, eutran-3, eutran-4, eutran-5, eutran-8, 
           |                       eutran-12, eutran-13, eutran-19, eutran-20, eutran-28, eutran-39
  --------------------------------
  IP       |            supported: ipv4, ipv6, ipv4v6
  --------------------------------
  3GPP     |                 imei: ***************
  --------------------------------
  3GPP EPS | ue mode of operation: ps-2
  --------------------------------
  SIM      |     primary sim path: /org/freedesktop/ModemManager1/SIM/0


That looks promising, I'll see if I can register to the network if the correct SIM cards arrive. 

Thanks for your quick support! :-)

Greets
Alex