EM7455 ccid driver

IoT Modules
1 
Port 6: Dev 15, If 6, Class=Chip/SmartCard, Driver=, 480M
        ID 1199:9079 Sierra Wireless, Inc. EM7455

is there a sierra driver for this?

2

did you try the MBPL USB driver?
https://source.sierrawireless.com/resources/airprime/software/mbpl/mbpl-software-latest/#sthash.xxQIW9xH.dpbs

What did you set for AT!USBCOMP?

3

set it through adb (usb_composition script, i updated for ccid), on the EM7455 device, in non-persistent mode, !USBCOMP doesnt show the mask, i dont think it will show the mask unless i set composition to default.

Config Index: 1                                                                                           │
Config Type:  1 (Generic)                                                                                 │
Interface bitmask: 0000010F (diag,adb,nmea,modem,rmnet0) 

!USBPID: 
APP : 9079
BOOT: 9078

OK

APP   BOOT
9071, 9070
68A2, 68A2
68B1, 68B0
68C0, 68C0
9068, 9068

OK

ill try the link.

ps:
on the EM7455 device, its at:
/usr/bin/usb/compositions/
updated script:
echo diag,ffs,serial,ecm_qc,ccid > /sys/class/android_usb/android$num/functions

4

Not sure why you can have the adb port to config that, seems a bit out of the official release scope where you need to take own risk

5

in adb its non-persistent, if i do something wrong, i just reboot, and get back to original setup, also i lets me test different configs and see the traffic flow on the device ifconfig

6

in an official way, it is not supposing to change config via adb port

7

ok, ill have to look up the bitmasks for ccid

8

My guess is “no”. Or you would have found the driver in source.sierrawireless.com

I believe this function is unsupported by Sierra Wireless. But it’s most likely just this code: drivers/usb/gadget/f_ccid.c - kernel/msm.git - Git at Google

which implements a straight USB smartcard class function. This is normally handled by a userspace driver in Linux. See https://ccid.apdu.fr/ . I believe this is packaged by most distros. E.g the libccid pakcage in Debian.

Try it along with the opensc tools. Might even work.