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-   -   How to check if device is USB/PC mode? (https://talk.maemo.org/showthread.php?t=40845)

jaeezzy 2010-01-16 09:18
How to check if device is USB/PC mode?
 
Hi,
I was wondering if anyone can help me as to how I can check if the device is in usb or pc suite mode. I checked libosso but couldn't get any clue and also checked the mce-dev but couldn't see usb/pc modes anywhere. Also I tried going through dbus api but couldn't figure out where to look. So, I would be very grateful for any hints/help coz I'm completely noob when it comes to these api. Thanks

BlueGene 2010-01-16 12:36
Re: How to check if device is USB/PC mode?
 
gconftool-2 is your friend ;-)

Output USB disconnected:

Code:
Nokia-N900-51-1:~# gconftool-2 -R / | grep usb
  sync-usb-mode = false
      statusbar_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_dimmed_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_dimmed_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_dimmed_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    mmc-used-over-usb = Schema (type: `bool' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    usb-mode = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    internal-mmc-used-over-usb = Schema (type: `bool' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    usb-device-name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    usb-cable-attached = Schema (type: `bool' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_icon_name = general_adhocwlan
      statusbar_dimmed_icon_name = statusarea_internetconnection_no
      statusbar_icon_name = general_packetdata
      statusbar_dimmed_icon_name = statusarea_internetconn_packetdata_dimmed
      statusbar_icon_name = general_wlan
      statusbar_dimmed_icon_name = statusarea_internetconnection_no
    mmc-used-over-usb = false
    usb-mode = idle
    internal-mmc-used-over-usb = false
    usb-device-name = unknown
    usb-cable-attached = false

Output USB connected with mass-storage-mode:

Code:
Nokia-N900-51-1:~# gconftool-2 -R / | grep usb
  sync-usb-mode = false
      statusbar_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_dimmed_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_dimmed_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_dimmed_icon_name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    mmc-used-over-usb = Schema (type: `bool' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    usb-mode = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    internal-mmc-used-over-usb = Schema (type: `bool' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    usb-device-name = Schema (type: `string' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
    usb-cable-attached = Schema (type: `bool' list_type: '*invalid*' car_type: '*invalid*' cdr_type: '*invalid*' locale: `C')
      statusbar_icon_name = general_adhocwlan
      statusbar_dimmed_icon_name = statusarea_internetconnection_no
      statusbar_icon_name = general_packetdata
      statusbar_dimmed_icon_name = statusarea_internetconn_packetdata_dimmed
      statusbar_icon_name = general_wlan
      statusbar_dimmed_icon_name = statusarea_internetconnection_no
    mmc-used-over-usb = false
    usb-mode = peripheral
    internal-mmc-used-over-usb = true
    usb-device-name = USB-Gerät
    usb-cable-attached = true
Now you only have to find out, where these entries exactly are and how to modify them consistently. But I suppose this wont be difficult anymore ;-)

jaeezzy 2010-01-16 13:56
Re: How to check if device is USB/PC mode?
 
Quote:
Originally Posted by BlueGene (Post 476054)
gconftool-2 is your friend ;-)

Now you only have to find out, where these entries exactly are and how to modify them consistently. But I suppose this wont be difficult anymore ;-)
Thanks for this BlueGene. How can I use this with my code. Hopefully I can make use of it.

pH5 2010-01-18 07:24
Re: How to check if device is USB/PC mode?
 
Check out http://maemo.org/development/, you can find a link to the GConf Reference Manual right on the front page. There's also a link to the Code samples right there. maemo-examples contains two example GConf programs (one for just setting/reading a GConf key, and one for listening to changes).

jaeezzy 2010-01-18 09:24
Re: How to check if device is USB/PC mode?
 
Thanks for the tips guys. However, I came across lshal and here's my effort so far without any luck so plz help me if I'm not on the right track. I would be very grateful. Thanks.

Code:
#include <hal/libhal.h>
#include <stdio.h>
#include <string.h>

//void set_up(LibHalContext*);
void _device_added(LibHalContext*, const char*);
void _device_removed(LibHalContext*, const char*);
void _property_modified(LibHalContext*, const char*, const char*, dbus_bool_t, dbus_bool_t);

int main(int argc, char *argv[]){
        printf("Starting hal\n");
        LibHalContext *ctx = libhal_ctx_new();
        DBusConnection *dbus;
        dbus = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
        if (dbus == NULL)
                printf("ERROR CONNECTION DBUS.\n");
        else
                printf("Successfully connected to DBus.\n");
        printf("connecting hal to dbus.\n");
        libhal_ctx_set_dbus_connection(ctx, dbus);
       
        libhal_ctx_set_device_added(ctx, _device_added);
        libhal_ctx_set_device_removed(ctx, _device_removed);
       
        libhal_ctx_init(ctx, NULL);
        printf("Watching devices...\n");
        libhal_device_property_watch_all(ctx, NULL);
       
        return 0;
}

void _device_added(LibHalContext *ctx, const char *udi){
        printf("UDI: %s\n", udi);
        if (strcmp(udi, "/org/freedesktop/Hal/devices/usb_device_1d6b_2_musb_hdrc") == 0){
                printf("Usb added.\n");
        }else
                printf("Unidentified device added.\n");
}

void _device_removed(LibHalContext *ctx, const char *udi){
        printf("UDI: %s\n", udi);
        if (strcmp(udi, "/org/freedesktop/Hal/devices/usb_device_1d6b_2_musb_hdrc") == 0){
                printf("Usb removed.\n");
        }else
                printf("Unidentified device removed.\n");
}


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