EM06-E - not COM port

Technical Subjects Driver
1

I have modem EM06-E. Modem works in Windows and everything is fine, but there is a problem. There are no Com ports for inputting AT commands. I have installed all the drivers you have, but the Com ports still do not appear. I can’t update and test anything without that port, also I want to change MBIC mode to QMI and work in Openwrt, then I tried in Lunix environment, modem works fine with modem manager. But I also can’t send AT commands, as if the modem mode is with ports disabled. I don’t know what to do with it, there is no possibility to enter at commands.

Perhaps there is some other program or possibility to change the MBIC mode of operation to QMI

2

Show the output of cat /sys/kernel/debug/usb/devices from Linux or OpenWrt.

3

root@OpenMPTCProuter:~# lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux 5.4.238 ohci_hcd Generic Platform OHCI controller
Bus 003 Device 002: ID 148f:3572 Ralink 802.11 n WLAN
Bus 004 Device 003: ID 2c7c:0306 Quectel EM06-E
Bus 004 Device 002: ID 1a40:0101 USB 2.0 Hub
Bus 004 Device 001: ID 1d6b:0002 Linux 5.4.238 ehci_hcd EHCI Host Controller
Bus 006 Device 001: ID 1d6b:0001 Linux 5.4.238 ohci_hcd Generic Platform OHCI controller
Bus 008 Device 001: ID 1d6b:0001 Linux 5.4.238 ohci_hcd Generic Platform OHCI controller
Bus 001 Device 001: ID 1d6b:0002 Linux 5.4.238 ehci_hcd EHCI Host Controller
Bus 002 Device 005: ID 2c7c:0307 Quectel EM06-E
Bus 002 Device 001: ID 1d6b:0002 Linux 5.4.238 ehci_hcd EHCI Host Controller
Bus 003 Device 001: ID 1d6b:0002 Linux 5.4.238 ehci_hcd EHCI Host Controller
Bus 005 Device 001: ID 1d6b:0001 Linux 5.4.238 ohci_hcd Generic Platform OHCI controller

root@OpenMPTCProuter:~# cat /sys/kernel/debug/usb/devices

T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.04
S: Manufacturer=Linux 5.4.238 ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=1c1a000.usb
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms

T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 1, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.04
S: Manufacturer=Linux 5.4.238 ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=1c1b000.usb
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms

T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 5 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=2c7c ProdID=0307 Rev= 3.10
S: Manufacturer=Quectel
S: Product=EM06-E
S: SerialNumber=0123456789ABCDEF
C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=500mA
A: FirstIf#= 0 IfCount= 2 Cls=02(comm.) Sub=0e Prot=00
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0e Prot=00 Driver=cdc_mbim
E: Ad=82(I) Atr=03(Int.) MxPS= 64 Ivl=32ms
I: If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
I:* If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.04
S: Manufacturer=Linux 5.4.238 ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=1c1c000.usb
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms

T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=148f ProdID=3572 Rev= 1.01
S: Manufacturer=Ralink
S: Product=802.11 n WLAN
S: SerialNumber=1.0
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=450mA
I:* If#= 0 Alt= 0 #EPs= 5 Cls=ff(vend.) Sub=ff Prot=ff Driver=rt2800usb
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

T: Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 3, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.04
S: Manufacturer=Linux 5.4.238 ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=1c1d000.usb
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms

T: Bus=04 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 4
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1a40 ProdID=0101 Rev= 1.11
S: Product=USB 2.0 Hub
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=256ms

T: Bus=04 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=2c7c ProdID=0306 Rev= 3.10
S: Manufacturer=Quectel
S: Product=EM06-E
S: SerialNumber=0123456789ABCDEF
C:* #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=87(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
E: Ad=89(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
E: Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

T: Bus=05 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 1
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0001 Rev= 5.04
S: Manufacturer=Linux 5.4.238 ohci_hcd
S: Product=Generic Platform OHCI controller
S: SerialNumber=1c1a400.usb
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms

T: Bus=06 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 1
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0001 Rev= 5.04
S: Manufacturer=Linux 5.4.238 ohci_hcd
S: Product=Generic Platform OHCI controller
S: SerialNumber=1c1b400.usb
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms

T: Bus=07 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 1
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0001 Rev= 5.04
S: Manufacturer=Linux 5.4.238 ohci_hcd
S: Product=Generic Platform OHCI controller
S: SerialNumber=1c1c400.usb
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms

T: Bus=08 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 1
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0001 Rev= 5.04
S: Manufacturer=Linux 5.4.238 ohci_hcd
S: Product=Generic Platform OHCI controller
S: SerialNumber=1c1d400.usb
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms

root@OpenMPTCProuter:~# dmesg | grep tty
[ 0.000000] Kernel command line: console=ttyS0,115200 earlyprintk root=PARTUUID=5452574f-02 rootwait earlycon=uart,mmio32,0x01c28000
[ 0.451155] printk: console [ttyS0] disabled
[ 0.475577] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 28, base_baud = 1500000) is a U6_16550A
[ 0.484581] printk: console [ttyS0] enabled
[ 15.815976] usbserial: USB Serial support registered for Garmin GPS usb/tty
[ 16.409711] usb 4-1.2: GSM modem (1-port) converter now attached to ttyUSB0
[ 16.423860] usb 4-1.2: GSM modem (1-port) converter now attached to ttyUSB1
[ 16.438085] usb 4-1.2: GSM modem (1-port) converter now attached to ttyUSB2
[ 16.452638] usb 4-1.2: GSM modem (1-port) converter now attached to ttyUSB3
root@OpenMPTCProuter:~#

root@OpenMPTCProuter:~# ls /dev/ttyUSB*
/dev/ttyUSB0 /dev/ttyUSB1 /dev/ttyUSB2 /dev/ttyUSB3
root@OpenMPTCProuter:~#

root@OpenMPTCProuter:~# ls /dev/cdc-wdm*
/dev/cdc-wdm0 /dev/cdc-wdm1

i can connected only 1 modem who work in QMI mode
socat - /dev/ttyUSB3,crnl

Those not work
socat - /dev/ttyACM0,raw,echo=0,crnl
socat - /dev/ttyACM3,raw,echo=0,crnl
socat - /dev/ttyUSB6,crnl

4

Now I have 2 EM-06 modems connected, one is working in QMI mode and everything is fine, I can use socat to send AT commands. The problem is in the second modem, I bought it recently and it works only in MBIC mode and has no COM port.

5

There is no need to post all these details.

proper modem that is currently in QMI mode, it can be switched to other modes using AT command

MBIM only modem, probably Microsoft version, supposed to be used in notebooks

6

Did I understand correctly that the version for Window can not enter AT commands and switch the mode of operation to QMI?

7

0307 version has no comm ports (that has nothing to do with drivers) so no AT command can be sent.
I don’t know of a switching method that works through MBIM, but I see no practical reason to switch from MBIM to QMI.
If you want to use uqmi or qmicli with this modem you can still do this as both tools can work with MBIM modems.