EC200S Linux Help

IoT Modules LTE Standard Module
1

Hey I am looking for the Linux User Guide, how to handle the EC200S.

I added the kernel support so lsusb show the correct device.
Bus 002 Device 004: ID 2c7c:6002 Quectel Wireless Solutions Co., Ltd.

I can bring it to CDC Ethernet mode via this AT Command: AT+QCFG=“usbnet”,1

[ 1698.836297] usb 2-1.2: new high-speed USB device number 4 using ehci-platform
[ 1699.009140] cdc_ether 2-1.2:1.0 usb1: register ‘cdc_ether’ at usb-5800d000.usbh-ehci-1.2, CDC Ethernet Device, ae:0c:29:a3:9b:6d
[ 1699.386288] usbcore: registered new interface driver option
[ 1699.390610] usbserial: USB Serial support registered for GSM modem (1-port)
[ 1699.401621] option 2-1.2:1.2: GSM modem (1-port) converter detected
[ 1699.418599] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB0
[ 1699.425892] option 2-1.2:1.3: GSM modem (1-port) converter detected
[ 1699.463305] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB1

Or with this AT Command: AT+QCFG=“usbnet”,3
To a rndis device

[ 6517.031151] usb 2-1.2: USB disconnect, device number 5
[ 6520.906282] usb 2-1.2: new high-speed USB device number 6 using ehci-platform
[ 6521.076251] rndis_host 2-1.2:1.0 usb1: register ‘rndis_host’ at usb-5800d000.usbh-ehci-1.2, RNDIS device, 7a:4c:b8:c5:5f:a0
[ 6521.089584] option 2-1.2:1.2: GSM modem (1-port) converter detected
[ 6521.096048] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB0
[ 6521.109826] option 2-1.2:1.3: GSM modem (1-port) converter detected
[ 6521.118530] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB1

WIth busybox udhcpc -i usb1 I can setup a IP Address for USB1

6: usb1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000
link/ether 8a:fd:f5:0f:2d:fa brd ff:ff:ff:ff:ff:ff
inet 192.168.43.100/24 brd 192.168.43.255 scope global usb1
valid_lft forever preferred_lft forever
inet6 fe80::88fd:f5ff:fe0f:2dfa/64 scope link
valid_lft forever preferred_lft forever

But I can not reach the mobile internet via this device.

If it test the internet connection via an AT Command like

AT+QPING=1,“www.google.de”
it works.

2

Quectel_EC200S_Linux_USB_Driver_User_Guide_V1.0.pdf (785.5 KB)

Hi Sir,

Please follow the guide to add the driver and set up datacall for your Linux.

image
image502×470 35.9 KB

You need set up datacall by using AT cmd “AT+QNETDEVCTL=1,1,1”

3

btw, the number of serial port is not correct. There should be 3 ttyUSB port.
ttyUSB0 are for upgrading and debuging, ttyUSB1 and ttyUSB2 could be used for sending AT commands.
You can upload the option.c and I can modify it for you.

4

Hi Bean,

with the correct documentation for the EC200S I setup the option.c file correctly.
Now I get the three ttyUSB devices.

[ 378.068291] cdc_acm 2-1.3:1.0: ttyACM0: USB ACM device
[ 378.612577] usb 2-1.3: USB disconnect, device number 5
[ 382.595144] usb 2-1.3: new high-speed USB device number 6 using ehci-platform
[ 382.757930] cdc_ether 2-1.3:1.0 usb1: register ‘cdc_ether’ at usb-5800d000.usbh-ehci-1.3, CDC Ethernet Device, ae:0c:29:a3:9b:6d
[ 382.770843] option 2-1.3:1.2: GSM modem (1-port) converter detected
[ 382.776875] usb 2-1.3: GSM modem (1-port) converter now attached to ttyUSB0
[ 382.784226] option 2-1.3:1.3: GSM modem (1-port) converter detected
[ 382.790217] usb 2-1.3: GSM modem (1-port) converter now attached to ttyUSB1
[ 382.797877] option 2-1.3:1.4: GSM modem (1-port) converter detected
[ 382.803450] usb 2-1.3: GSM modem (1-port) converter now attached to ttyUSB2

But I can not use the modem. I get some error messages.

at+cpin?
+CPIN: READY

OK
at+csq
+CSQ: 21,0

OK
at+qicsgp=1,1,“cmnet”
OK
at+cops?
+COPS: 0,0,“Telekom.de”,3

OK
at+qlact=1
ERROR
at+qnetdevctl=1,1,1
ERROR

5

I used a different sim card and it worked.
Thanks for your support.

6

I used this same command on EC-200SCN with “{ type }” as “3” for automatic connection.

My module keeps restarting now.

Did I brick it ?

What to do now?

7

quectel
quectel367×716 57.4 KB

My device behaves differently, it restart once I enter this command.

if I put mode to 3 , it will continuously restart.

Please help

8

On Linux, it is better to set it to ECM mode.
AT+QCFG=“usbnet”,1

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