EG915U-EU not works on raspberry pi

IoT Modules
1

Hello.
I’m testing a Quectel EG915U-EU EG915UEUABR03A01M08 but not works on my raspberry pi with quectel-CM tool. This setup works fine with EG25-G.

This is the trace when plug in de model in raspberry:

[51423.448662] usb 1-1: new high-speed USB device number 11 using dwc_otg
[51423.448883] Indeed it is in host mode hprt0 = 00001101
[51423.689141] usb 1-1: New USB device found, idVendor=1782, idProduct=4d12, bcdDevice= 3.18
[51423.689147] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[51423.689152] usb 1-1: Product: Android
[51423.689156] usb 1-1: Manufacturer: Android
[51424.038698] usb 1-1: USB disconnect, device number 11
[51424.988661] Indeed it is in host mode hprt0 = 00021501
[51425.198640] usb 1-1: new high-speed USB device number 12 using dwc_otg
[51425.198934] Indeed it is in host mode hprt0 = 00001101
[51425.438912] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 32, changing to 9
[51425.439144] usb 1-1: New USB device found, idVendor=2c7c, idProduct=0901, bcdDevice= 3.18
[51425.439149] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[51425.439153] usb 1-1: Product: Android
[51425.439157] usb 1-1: Manufacturer: Android
[51425.441087] cdc_ether 1-1:1.0 usb0: register 'cdc_ether' at usb-3f980000.usb-1, CDC Ethernet Device, 02:4b:b3:b9:eb:e5

Running quetel-CM tool i getting this:

[05-30_10:24:03:489] QConnectManager_Linux_V1.6.5
[05-30_10:24:03:490] Find /sys/bus/usb/devices/1-1 idVendor=0x2c7c idProduct=0x901, bus=0x001, dev=0x00c
[05-30_10:24:03:490] network interface '' or qmidev '' is not exist
[05-30_10:24:03:490] atdevice_detect failed
[05-30_10:24:03:490] qmidevice_detect failed

I’m testing also in my debian x86 PC and works with quectel-CM tool.
When plug in i get:

[ 7461.296506] usb 1-2: new high-speed USB device number 14 using xhci_hcd
[ 7461.455880] usb 1-2: New USB device found, idVendor=1782, idProduct=4d12, bcdDevice= 3.18
[ 7461.455887] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 7461.455890] usb 1-2: Product: Android
[ 7461.455893] usb 1-2: Manufacturer: Android
[ 7462.013794] usb 1-2: USB disconnect, device number 14
[ 7463.096519] usb 1-2: new high-speed USB device number 15 using xhci_hcd
[ 7463.253946] usb 1-2: config 1 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 32, changing to 9
[ 7463.255950] usb 1-2: New USB device found, idVendor=2c7c, idProduct=0901, bcdDevice= 3.18
[ 7463.255960] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 7463.255966] usb 1-2: Product: Android
[ 7463.255971] usb 1-2: Manufacturer: Android
[ 7463.360300] cdc_ether 1-2:1.0 usb0: register 'cdc_ether' at usb-0000:05:00.3-2, CDC Ethernet Device, 02:4b:b3:b9:eb:e5
[ 7463.365098] option 1-2:1.2: GSM modem (1-port) converter detected
[ 7463.365637] usb 1-2: GSM modem (1-port) converter now attached to ttyUSB1
[ 7463.367608] option 1-2:1.3: GSM modem (1-port) converter detected
[ 7463.367888] usb 1-2: GSM modem (1-port) converter now attached to ttyUSB2
[ 7463.371608] option 1-2:1.4: GSM modem (1-port) converter detected
[ 7463.371915] usb 1-2: GSM modem (1-port) converter now attached to ttyUSB3
[ 7463.373003] option 1-2:1.5: GSM modem (1-port) converter detected
[ 7463.373242] usb 1-2: GSM modem (1-port) converter now attached to ttyUSB4
[ 7463.374364] option 1-2:1.6: GSM modem (1-port) converter detected
[ 7463.374677] usb 1-2: GSM modem (1-port) converter now attached to ttyUSB5
[ 7463.376043] option 1-2:1.7: GSM modem (1-port) converter detected
[ 7463.376397] usb 1-2: GSM modem (1-port) converter now attached to ttyUSB6
[ 7463.377782] option 1-2:1.8: GSM modem (1-port) converter detected
[ 7463.378131] usb 1-2: GSM modem (1-port) converter now attached to ttyUSB7
[ 7463.453338] cdc_ether 1-2:1.0 enx024bb3b9ebe5: renamed from usb0
[ 7508.026434] IPv6: ADDRCONF(NETDEV_CHANGE): enx024bb3b9ebe5: link becomes ready

And running quectel-CM:

[05-30_10:15:27:269] QConnectManager_Linux_V1.6.5
[05-30_10:15:27:273] Find /sys/bus/usb/devices/1-2 idVendor=0x2c7c idProduct=0x901, bus=0x001, dev=0x00f
[05-30_10:15:27:273] Auto find qmichannel = /dev/ttyUSB1
[05-30_10:15:27:273] Auto find usbnet_adapter = enx024bb3b9ebe5
[05-30_10:15:27:273] netcard driver = cdc_ether, driver version = 6.1.0-21-amd64
[05-30_10:15:27:273] Modem works in ECM_RNDIS_NCM mode
[05-30_10:15:27:327] /proc/35280/fd/5 -> /dev/ttyUSB1
[05-30_10:15:27:327] /proc/35280/exe -> /usr/bin/screen
[05-30_10:15:29:332] atc_fd = 7
[05-30_10:15:29:332] AT> ATE0Q0V1
[05-30_10:15:29:344] AT< OK
[05-30_10:15:30:344] AT> AT+QCFG="usbnet"
[05-30_10:15:30:355] AT< +QCFG: "usbnet",1
[05-30_10:15:30:355] AT< OK
[05-30_10:15:30:355] AT> AT+QNETDEVCTL=?
[05-30_10:15:30:366] AT< +QNETDEVCTL: (0,1,3),(1-7),(0,1)
[05-30_10:15:30:366] AT< OK
[05-30_10:15:30:366] AT> AT+CGREG=2
[05-30_10:15:30:377] AT< OK
[05-30_10:15:30:377] AT> AT+CEREG=2
[05-30_10:15:30:388] AT< OK
[05-30_10:15:30:388] AT> AT+C5GREG=2
[05-30_10:15:30:399] AT< +CME ERROR: 58
[05-30_10:15:30:399] AT> AT+QNETDEVSTATUS=?
[05-30_10:15:30:410] AT< +CME ERROR: 58
[05-30_10:15:30:410] AT> AT+QCFG="NAT"
[05-30_10:15:30:420] AT< +CME ERROR: 3
[05-30_10:15:30:420] AT> AT+CGMR
[05-30_10:15:30:431] AT< EG915UEUABR03A01M08
[05-30_10:15:30:432] AT< OK
[05-30_10:15:30:432] AT> AT+CPIN?
[05-30_10:15:30:442] AT< +CPIN: READY
[05-30_10:15:30:443] AT< OK
[05-30_10:15:30:443] AT> AT+QCCID
[05-30_10:15:30:454] AT< +QCCID: 8934222301235526247F
[05-30_10:15:30:454] AT< OK
[05-30_10:15:30:454] requestGetICCID 8934222301235526247F
[05-30_10:15:30:454] AT> AT+CIMI
[05-30_10:15:30:470] AT< 214223002672651
[05-30_10:15:30:471] AT< OK
[05-30_10:15:30:471] requestGetIMSI 214223002672651
[05-30_10:15:30:471] AT> AT+QICSGP=1
[05-30_10:15:30:482] AT< +QICSGP: 1,"","","",0
[05-30_10:15:30:482] AT< OK
[05-30_10:15:30:483] requestGetProfile[1] ///0/IPV4
[05-30_10:15:30:483] AT> AT+COPS=3,0;+COPS?;+COPS=3,1;+COPS?;+COPS=3,2;+COPS?
[05-30_10:15:30:501] AT< +COPS: 0,0,"Movistar",7
[05-30_10:15:30:508] AT< +COPS: 0,1,"Movistar",7
[05-30_10:15:30:516] AT< +COPS: 0,2,"21407",7
[05-30_10:15:30:516] AT< OK

[51423.448662] usb 1-1: new high-speed USB device number 11 using dwc_otg
[51423.448883] Indeed it is in host mode hprt0 = 00001101
[51423.689141] usb 1-1: New USB device found, idVendor=1782, idProduct=4d12, bcdDevice= 3.18
[51423.689147] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[51423.689152] usb 1-1: Product: Android
[51423.689156] usb 1-1: Manufacturer: Android
[51424.038698] usb 1-1: USB disconnect, device number 11
[51424.988661] Indeed it is in host mode hprt0 = 00021501
[51425.198640] usb 1-1: new high-speed USB device number 12 using dwc_otg
[51425.198934] Indeed it is in host mode hprt0 = 00001101
[51425.438912] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 32, changing to 9
[51425.439144] usb 1-1: New USB device found, idVendor=2c7c, idProduct=0901, bcdDevice= 3.18
[51425.439149] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[51425.439153] usb 1-1: Product: Android
[51425.439157] usb 1-1: Manufacturer: Android
[51425.441087] cdc_ether 1-1:1.0 usb0: register 'cdc_ether' at usb-3f980000.usb-1, CDC Ethernet Device, 02:4b:b3:b9:eb:e5

Seems the modem is working with RNDIS mode

[05-30_10:15:27:273] Modem works in ECM_RNDIS_NCM mode

but send AT command for change to ECM mode

AT+QCFG="usbnet",1

nothing change and the functionality is the same.

Do I need new drivers for raspberry?
What do you need to program an application with python inside the modem?

Thanks

2

Because on Raspberry Pi, there is no ttyUSB port.
Before you run the quectel-CM you can run the cmd first

sudo modprobe  option
echo 2C7C  0901 FF | sudo tee /sys/bus/usb-serial/drivers/option1/new_id
3

Thanks, doing this wotks with quectel-CM.

On raspberry pi with EG25-G I don’t need to add it for work with quectel-CM. When I plugged it, I showing ttyUSBX connected on kernel message (sudo dmesg).

Anyway, if I’ve adding the “option” module in /etc/modules-load.d/modules.conf
and add in crontab

@reboot echo 2C7C  0901 FF | sudo tee /sys/bus/usb-serial/drivers/option1/new_id

the EG915U works fine on every reboot.
Do you know if there is a more elegant way instead of adding it to cron?

4

The quectel-CM support the EG915U.

You can add the command in initial script or recompile the Linux kernel. Or you can just recompile the option.ko.