EC200U-CN driver installation guide for linux

Technical Subjects Driver
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1

HI,

I have EC200U_CN and want to test the PPP on that board(Apalis imx6q with Apalis eval kit) with Linx.

I need to point out two issues that I am facing.

I have referred to the WCDMA&LTE_Linux_USB_Driver_User_Guide and As specified in that document I have changed the kernel code and compiled the Linux kernel boot it in the board.

when I checked dmesg it does not populate four ttyUSB* dev files. in my case, only ttyUSB0 is displaying.

As in the document for EC20 VID= 0x05c6 and PID=0x9215.
It is not the same as mentioned in the document when I checked with dmesg.

quectel forum
quectel forum1041×692 135 KB

[ 40.734771] usb 1-1.1.3: New USB device found, idVendor=067b, idProduct=2303, bcdDevice= 4.00

Blockquote

Thanks,
Vishvas

2

You don’t need to change the kernel code, the device you see has nothing to do with Quectel.
You need to manually add your modem ID’s to the standard option driver:
# echo "2c7c 0901" > /sys/bus/usb-serial/drivers/option1/new_id
then check with cat /sys/kernel/debug/usb/devices
Please do not use pictures.

3

Thanks for replying to me,

I am able to populate all the device files on Linux PC. But again the problem is when opening the port using the below command I am not able to type anything in that port.

sudo picocom -b 115200 /dev/ttyUSB2
4

ttyUSB2 is correct only if there are no other USB devices in the system.
You have 1 port - ttyUSB0 - already in use by another device, so you need to add 1 to your modem ports.

5

Hi @jfrog

Could you please tell me how can I add that to modem ports.

Thanks
Vishvas

6

Simply use the next port - ttyUSB3 instead of ttyUSB2