ModemManager Plugin EG915U

Bogi · March 29, 2023, 8:37am

Hi everyone,

do you have a modemmanager plugin that supports the EG915U modem?
Because the official git does not support this modem.

freedesktop/ModemManager/blob/master/plugins/quectel/77-mm-quectel-port-types.rules

# do not edit this file, it will be overwritten on update
ACTION!="add|change|move|bind", GOTO="mm_quectel_port_types_end"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c7c", GOTO="mm_quectel_port_types"
GOTO="mm_quectel_port_types_end"

LABEL="mm_quectel_port_types"

SUBSYSTEMS=="usb", ATTRS{bInterfaceNumber}=="?*", ENV{.MM_USBIFNUM}="$attr{bInterfaceNumber}"

# Quectel EG06
#  ttyUSB0 (if #0): QCDM/DIAG port
#  ttyUSB1 (if #1): GPS data port
#  ttyUSB2 (if #2): AT primary port
#  ttyUSB3 (if #3): AT secondary port
ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0306", ENV{.MM_USBIFNUM}=="00", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_QCDM}="1"
ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0306", ENV{.MM_USBIFNUM}=="01", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_GPS}="1"
ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0306", ENV{.MM_USBIFNUM}=="02", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_AT_PRIMARY}="1"
ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0306", ENV{.MM_USBIFNUM}=="03", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_AT_SECONDARY}="1"

# Quectel EG91

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Bean.Wang-Q · April 3, 2023, 1:25am

Yes.
The ModemManager cannot support the EG915U.

Quectel EG915U

ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0901", ENV{.MM_USBIFNUM}=="08", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_GPS}="1"
ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0901", ENV{.MM_USBIFNUM}=="02", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_AT_PRIMARY}="1"
ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0901", ENV{.MM_USBIFNUM}=="05", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_AT_SECONDARY}="1"

The EG915U cannot support the qdm and the QMI.
It only support the ECM/RNDIS.
We can only use AT command to set up data call.