Error installing Telit LE910x using ECM

adam.simms · November 16, 2020, 11:37pm

I was following the steps listed here: https://docs.sixfab.com/page/internet-connection-with-twilio-super-sim-telit-le910x-and-sixfab-base-hat-using-ecm

When it asks to enter AT#USBCFG=4 I accidentally entered AT#USBCFG=3.

Now when I try to enter: minicom -D /dev/ttyUSB2 -b 115200
I get: minicom: cannot open /dev/ttyUSB2: No such file or directory.

Any help would be appreciated.

lsusb -t

/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 3: Dev 3, If 0, Class=Communications, Driver=cdc_mbim, 480M
        |__ Port 3: Dev 3, If 1, Class=CDC Data, Driver=cdc_mbim, 480M

lsusb

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 1bc7:1205 Telit Wireless Solutions 
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

dmesg | grep tty

[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 video=HDMI-A-1:1920x1080M@60 smsc95xx.macaddr=DC:A6:32:A3:32:21 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console= **tty** 1 root=/dev/mmcblk0p7 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles

[ 0.001081] printk: console [ **tty** 1] enabled

[ 1.145433] fe201000.serial: **tty** AMA0 at MMIO 0xfe201000 (irq = 29, base_baud = 0) is a PL011 rev2

ensar · November 17, 2020, 8:12am

Hi @adam.simms,

Send MBIM_OPEN message to the modem with the following command and wait 3 sec.

echo 01 00 00 00 10 00 00 00 01 00 00 00 00 10 00 00 | xxd -r -p >/dev/cdc-wdm0

Send USB composition with the following command:

echo 03 00 00 00 32 00 00 00 05 00 00 00 01 00 00 00 00 00 00 00 54 65 6c 69 74 4d 42 49 4d 45 78 74 65 6e 64 53 01 00 00 00 01 00 00 00 02 00 00 00 00 00 | xxd -r -p >/dev/cdc-wdm0

Note: You might need root permission to do this: sudo su

adam.simms · November 17, 2020, 1:16pm

That worked perfectly. I’m up and running. Thanks!

Salient · October 20, 2023, 8:12pm

@ensar same thing happened to me. attemped to apply this fix but i still cannot access ttyUSB2. please advise.

ensar · October 20, 2023, 10:46pm

Hi @Salient ,

Could you share the following command outputs?

lsusb -t
lsusb
dmesg | grep tty
usb-devices

Salient · October 20, 2023, 10:52pm

Hi @ensar thanks.

lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 3: Dev 3, If 0, Class=Communications, Driver=cdc_mbim, 480M
|__ Port 3: Dev 3, If 1, Class=CDC Data, Driver=cdc_mbim, 480M
|__ Port 4: Dev 4, If 0, Class=Vendor Specific Class, Driver=mt76x0u, 480M

lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0b05:17d1 ASUSTek Computer, Inc. AC51 802.11a/b/g/n/ac Wireless Adapter [Mediatek MT7610U]
Bus 001 Device 003: ID 1bc7:1205 Telit Wireless Solutions LE910C4-NF
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

dmseg | grep tty
[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_headphones=0 snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_hdmi=0 smsc95xx.macaddr=DC:A6:32:EE:8C:47 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyS0,115200 console=tty1 root=PARTUUID=24a0b1b9-02 rootfstype=ext4 fsck.repair=yes rootwait cfg80211.ieee80211_regdom=US
[ 0.000912] printk: console [tty1] enabled
[ 1.676396] fe201000.serial: ttyAMA1 at MMIO 0xfe201000 (irq = 36, base_baud = 0) is a PL011 rev2
[ 1.676683] serial serial0: tty port ttyAMA1 registered
[ 5.087153] systemd[1]: Created slice system-getty.slice - Slice /system/getty.

usb-devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev=06.01
S: Manufacturer=Linux 6.1.0-rpi4-rpi-v8 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=0000:01:00.0
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=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 4
D: Ver= 2.10 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=2109 ProdID=3431 Rev=04.21
S: Product=USB2.0 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=01 Lev=02 Prnt=02 Port=02 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=1bc7 ProdID=1205 Rev=03.18
S: Manufacturer=Android
S: Product=LE910C4-NF
S: SerialNumber=0123456789ABCDEF
C: #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
E: Ad=82(I) Atr=03(Int.) MxPS= 64 Ivl=32ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms

T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 4
D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1
P: Vendor=1d6b ProdID=0003 Rev=06.01
S: Manufacturer=Linux 6.1.0-rpi4-rpi-v8 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=0000:01:00.0
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

ensar · October 20, 2023, 11:03pm

This didn’t work? Any errors, output? Is there a service etc. that keeps the module in this mode in the background?

Salient · October 20, 2023, 11:13pm

You know. You guys are great just want to preface this reply with that. And F&(*#$king ModemManager was the culpret again (will never forget to check that before i request support). Held up the port. All good now. Thanks and have a great weekend.

@ensar

any idea what this is about?

AT+CGREG?
+CGREG: 2,1,“58E7”,“A79D0C”,7,D9

AT+CREG?
+CREG: 2,1,“58E7”,“A79D0C”,7

I’ve been scouring AT command manuals, but is there any way to clear NVM something like a factory reset?

sfh294 · September 2, 2024, 4:27am

Hey. I know its been a while, but I have the same issue and Im trying to resolve it using this example but im getting an error.

Using RPI 5 Sixfab 4G Hat Telit

did the literal exact same thing as this guy. Solid blue light on the 4G HAT and no internet… it used to blink. Im working on a companion computer set up for a drone as to supply the Ground Station with a 3rd Telemetry link. The only way this will work is if I have 4G connection. Thanks.

pi@rpanion:~ $ echo | 01 00 00 00 10 00 00 00 01 00 00 00 00 10 00 00 | xxd -r -p >/dev/cdc-wdm0
bash: 01: command not found
bash: /dev/cdc-wdm0: Permission denied
pi@rpanion:~ $ sudo su
root@rpanion:/home/pi# echo | 03 00 00 00 32 00 00 00 05 00 00 00 01 00 00 00 00 00 00 00 54 65 6c 69 74 4d 42 49 4d 45 78 74 65 6e 64 53 01 00 00 00 01 00 00 00 02 00 00 00 00 00 | xxd -r -p >/dev/cdc-wdm0
bash: 03: command not found
bash: xxd: command not found
root@rpanion:/home/pi#

sfh294 · September 2, 2024, 4:28am

root@rpanion:/home/pi# echo 03 00 00 00 32 00 00 00 05 00 00 00 01 00 00 00 00 00 00 00 54 65 6c 69 74 4d 42 49 4d 45 78 74 65 6e 64 53 01 00 00 00 01 00 00 00 02 00 00 00 00 00 | xxd -r -p >/dev/cdc-wdm0
bash: xxd: command not found
root@rpanion:/home/pi#

saeed · September 4, 2024, 2:22pm

check xxd with xxd -v command first.

Ref: Understanding the xxd command

sfh294 · September 4, 2024, 2:40pm

Ok i will give it a shot. Thank you

sfh294 · September 4, 2024, 10:30pm

@saeed “Command not found” i should probably point out i am very new and inexperienced with Raspberry PI…

sfh294 · September 4, 2024, 11:28pm

I should probably mention, that this specific board is running a modified version of Raspberry OS called Rpanion. I tried to do sudo full upgrade today and it completely did not want to cooperate. I booted up ubuntu and the modem worked fine. So its definitely am issue with my OS.

mk2025 · January 14, 2025, 12:43pm

@ensar I want to set the usbmode to 0 instead of 3, how do I need to change the USB composition for /dev/cdc-wdm0?

ensar · January 15, 2025, 6:11am

Hi @mk2025 ,

echo 03 00 00 00 32 00 00 00 05 00 00 00 01 00 00 00 00 00 00 00 54 65 6c 69 74 4d 42
49 4d 45 78 74 65 6e 64 53 01 00 00 00 01 00 00 00 02 00 00 00 XX 00 | xxd -r -p
>/dev/cdc-wdm0

To set the USB configuration, XX must be changed and its range is 0x00-0x0c