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Home Page: http://cgit.freedesktop.org/ModemManager/ModemManager/
License: GNU General Public License v2.0
modemmanager's Introduction
ModemManager. The problem ModemManager tries to solve is to provide a unified high level API for communicating with (mobile broadband) modems. While the basic commands are standardized, the more advanced operations (like signal quality monitoring while connected) varies a lot. Using. ModemManager is a system daemon and is not meant to be used directly from the command line. However, since it provides DBus API, it is possible to use 'dbus-send' command to control it from the terminal. There's an example program (tests/mm-test.py) that demonstrates the basic API usage. Implementation. ModemManager is a DBus system bus activated service (meaning it's started automatically when a request arrives). It is written in C. The devices are queried from udev and automatically updated based on hardware events. There's a GInterface (MMModem) that defines the modem interface and any device specific implementation must implement it. There are two generic MMModem implementations to support the basic operations (one for GSM, one for CDMA,) which are common for all cards. Plugins. Plugins are loaded on startup, and must implement the MMPlugin interface. It consists of a couple of methods which tell the daemon whether the plugin supports a port and to create custom MMModem implementations. It most likely makes sense to derive custom modem implementations from one of the generic classes and just add (or override) operations which are not standard. There's a fully working plugin in the plugins/ directory for Huawei cards that can be used as an example for writing new plugins. Writing new plugins is highly encouraged! API. The API is open for changes, so if you're writing a plugin and need to add or change some public method, feel free to suggest it!
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telemaco stengar stari4ok fritsgreuter julianoes andyaccess thezawad vicamo dengguanyang navsdev robcore mpozzati77 brasy luckymmkay shutterquick hericah cat0764modemmanager's Issues
using mmlib-glib in C to access a cellular modem
Hello,
I am having issues initiating a GDBusConnection to a cellular modem device located at /dev/cdc-wdm0. I have attempted declaring a GFile and opening it against that path, then initializing a GIOFileStream with that file. After that I am passing that GFileIOstream into a GDBusConnection that I can use to initialize a MMManager object, however the call to g_dbus_connection_new_sync seems to be hanging forever. Furthermore if i end the program i notice the modem is no longer visible when pinging it from modemmanage commadn line via mmcli --modem=0.
I have posted code below as well as output from modemmanager containing info on the modem. Thanks
#include <libmm-glib.h>
#include <gio/gio.h>
//#include <gtk/gtk.h>
#include <stdio.h>
#include <stdbool.h>
GDBusConnection *pConnection;
int main (void)
{
printf("begin\n");
GCancellable *cancellable;
GError *pError;
MMManager *pManager;
GDBusAuthObserver *observer = NULL;
const gchar *guid = NULL;
const gchar *pErrMsg = "error";
pError = g_error_new_literal(G_FILE_ERROR,
G_FILE_ERROR_NOENT,
pErrMsg);
GFile * pFile = g_file_new_for_path("/dev/cdc-wdm0");
if(pFile == NULL)
{
printf("null GFile\n");
}
else
{
printf("GFile OK\n");
}
GFileIOStream *pStream = g_file_open_readwrite(pFile, NULL, NULL);
if(pStream == NULL)
{
printf("null pStream\n");
}
else
{
printf("pStream OK\n");
}
GDBusObjectManagerClientFlags objflags = G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT;
pConnection= g_dbus_connection_new_sync(pStream,
guid, // for authent. as a server
objflags,
observer,
NULL, // cancellable,
NULL);
if(pConnection == NULL)
{
printf("null GDBusConnection(%s)\n",
pError->message);
}
pManager = mm_manager_new_sync(pConnection,
objflags,
cancellable,
&pError);
if(pManager == NULL)
{
printf("null pManager\n");
}
mm_manager_scan_devices_sync(pManager,
cancellable,
&pError);
MMObject modem;
printf("d\n");
//const gchar* pChar = mm_object_get_path(&modem);
//free resources here
g_error_free(pError);
printf("end\n");
return(0);
}
Below is the output from modemmanager mmcli --modem=0
----------------------------------
General | path: /org/freedesktop/ModemManager1/Modem/0
| device id:
----------------------------------
Hardware | manufacturer: Telit
| model: LE910C4-NF
| firmware revision: 25.21.660 1 [Mar 04 2021 12:00:00]
| carrier config: default
| h/w revision: 1.30
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id: 0
----------------------------------
System | device: /sys/devices/platform/soc@0/32c00000.bus/32e50000.usb/ci_hdrc.1/usb1/1-1/1-1.2
| drivers: qmi_wwan, option
| plugin: telit
| primary port: cdc-wdm0
| ports: cdc-wdm0 (qmi), ttyUSB0 (ignored), ttyUSB1 (gps),
| ttyUSB4 (ignored), wwan0 (net)
----------------------------------
Status | lock: sim-pin2
| unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (10), sim-puk2 (10)
| state: connected
| power state: on
| access tech: lte
| signal quality: 75% (cached)
----------------------------------
Modes | supported: allowed: 3g; preferred: none
| allowed: 4g; preferred: none
| allowed: 3g, 4g; preferred: 4g
| allowed: 3g, 4g; preferred: 3g
| current: allowed: 3g, 4g; preferred: 4g
----------------------------------
Bands | supported: utran-4, utran-5, utran-2, eutran-2, eutran-4, eutran-5,
| eutran-12, eutran-13, eutran-14, eutran-66, eutran-71
| current: utran-4, utran-5, utran-2, eutran-2, eutran-4, eutran-5,
| eutran-12, eutran-13, eutran-14, eutran-66, eutran-71
----------------------------------
IP | supported: ipv4, ipv6, ipv4v6
----------------------------------
3GPP | imei: 3
| enabled locks: fixed-dialing
| operator id: 311480
| operator name: VZW
| registration: home
----------------------------------
3GPP EPS | initial bearer path: /org/freedesktop/ModemManager1/Bearer/0
| initial bearer apn: super
| initial bearer ip type: ipv4
----------------------------------
SIM | primary sim path: /org/freedesktop/ModemManager1/SIM/0
| sim slot paths: slot 1: /org/freedesktop/ModemManager1/SIM/0 (active)
| slot 2: none
----------------------------------
Bearer | paths: /org/freedesktop/ModemManager1/Bearer/2
| /org/freedesktop/ModemManager1/Bearer/1
Thank you
No AT port available to run
Hello,
I have a modem, I am trying to talk to via AT Commands. I have printout information from mmcli showing modem information. I have started modemManager service with --debug argument, yet when I try to issue AT Commands I get the error "No AT port available to run". Can someone provide some feedback on how to further understand and debug this issue?
General | path: /org/freedesktop/ModemManager1/Modem/0
| device id:
Hardware | manufacturer: Telit
| model: LE910C4-NF
| firmware revision: 25.21.660 1 [Mar 04 2021 12:00:00]
| carrier config: default
| h/w revision: 1.30
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id:
System | device: /sys/devices/platform/soc@0/32c00000.bus/32e50000.usb/ci_hdrc.1/usb1/1-1/1-1.2
| drivers: qmi_wwan, option
| plugin: telit
| primary port: cdc-wdm0
| ports: cdc-wdm0 (qmi), ttyUSB0 (ignored), ttyUSB1 (gps),
| ttyUSB4 (ignored), wwan0 (net)
Status | lock: sim-pin2
| unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (10), sim-puk2 (10)
| state: enabled
| power state: on
| access tech: lte
| signal quality: 59% (cached)
Modes | supported: allowed: 3g; preferred: none
| allowed: 4g; preferred: none
| allowed: 3g, 4g; preferred: 4g
| allowed: 3g, 4g; preferred: 3g
| current: allowed: 3g, 4g; preferred: 4g
Bands | supported: utran-4, utran-5, utran-2, eutran-2, eutran-4, eutran-5,
| eutran-12, eutran-13, eutran-14, eutran-66, eutran-71
| current: utran-4, utran-5, utran-2, eutran-2, eutran-4, eutran-5,
| eutran-12, eutran-13, eutran-14, eutran-66, eutran-71
IP | supported: ipv4, ipv6, ipv4v6
3GPP | imei:
| enabled locks: fixed-dialing
| operator id:
| registration: idle
3GPP EPS | initial bearer apn: super
| initial bearer ip type: ipv4
SIM | primary sim path: /org/freedesktop/ModemManager1/SIM/0
| sim slot paths: slot 1: /org/freedesktop/ModemManager1/SIM/0 (active)
| slot 2: none
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