How to use BPI-4G LTE module with BPI-R2

Banana Pi Router design
64

Hello，it looks strange, when you use dhcp to get IP, but /quectel-CM exit, let me have a look.

65

Hello，Could you please show these logs？

  1. Do this command to check device：ls /dev/ttyUSB*

  2. After you execute ./quectel-CM &，and after you dhclient wwan0，if wwan0 is down，please check device again：ls /dev/ttyUSB*

  3. if /dev/ttyUSB* is exist, please do minicom -D /dev/ttyUSB2, and do these commands to check 4g module statue:

  • at+csq
  • at+ccid
  • at+cgreg?
66

Hi. Check my reply.

  1. ls /dev/ttyUSB*

    ls: cannot access ‘/dev/ttyUSB*’: No such file or directory

  2. quectel-cm quit, because of no wwan0 device and gives same result for “ls /dev/ttyUSB*”.

  3. Not able to do since there was no wwan0.

67

so your image don’t recognise the 4g module？ you don’t have /dev/ttyUSB*?

68

@Jackzeng No. The module initially mounted on the ttyUSB0-3 and automatically unmounted only after I call quectel-cm & dhclient wwan0. My dmesg message is as follows,

> [   83.279885] i2c /dev entries driver
[   86.865460] xhci-mtk 1a1c0000.usb: xHCI host not responding to stop endpoint command.
[   86.865602] xhci-mtk 1a1c0000.usb: Assuming host is dying, halting host.
[   86.866204] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[   86.866390] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[   86.866547] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[   86.866697] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[   86.867029] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[   86.867181] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[   86.867331] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[   86.867487] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[   86.867836] qmi_wwan 1-1:1.4: Tx URB error: -22
[   86.868564] qmi_wwan 1-1:1.4: Tx URB error: -22
[   86.869260] qmi_wwan 1-1:1.4: Tx URB error: -22
[   86.869882] xhci-mtk 1a1c0000.usb: HC died; cleaning up
[   86.869979] qmi_wwan 1-1:1.4: Tx URB error: -22
[   86.870710] usb 1-1: USB disconnect, device number 2
[   86.879981] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[   86.880438] option 1-1:1.0: device disconnected
[   86.888800] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[   86.888892] option 1-1:1.1: device disconnected
[   86.891991] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[   86.892081] option 1-1:1.2: device disconnected
[   86.896328] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[   86.896414] option 1-1:1.3: device disconnected
[   86.896735] qmi_wwan 1-1:1.4 wwan0: unregister 'qmi_wwan' usb-1a1c0000.usb-1, WWAN/QMI device
[   86.946338] Alignment trap: not handling instruction e8503f00 at [<b6ac0ca4>]
[   86.946379] Unhandled fault: alignment exception (0x001) at 0x65676173
[   86.946387] pgd = db280000
[   86.946393] [65676173] *pgd=00000000

TIA.

69

It is even automatically disconnected shortly after I reinserted the 4G module. Check my updated dmesg log.

> [ 1878.359005] usb 3-1: new high-speed USB device number 2 using xhci-mtk
[ 1878.539129] option 3-1:1.0: GSM modem (1-port) converter detected
[ 1878.540371] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB0
[ 1878.541375] option 3-1:1.1: GSM modem (1-port) converter detected
[ 1878.542313] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB1
[ 1878.542811] option 3-1:1.2: GSM modem (1-port) converter detected
[ 1878.543910] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB2
[ 1878.544392] option 3-1:1.3: GSM modem (1-port) converter detected
[ 1878.545542] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB3
[ 1878.549750] qmi_wwan 3-1:1.4: cdc-wdm0: USB WDM device
[ 1878.549777] qmi_wwan 3-1:1.4: Quectel EC25 work on RawIP mode
[ 1878.551531] qmi_wwan 3-1:1.4 wwan0: register 'qmi_wwan' at usb-1a240000.usb-1, WWAN/QMI device, a2:47:39:3d:2d:11   
[ 1897.628386] xhci-mtk 1a240000.usb: xHCI host not responding to stop endpoint command.
[ 1897.628528] xhci-mtk 1a240000.usb: Assuming host is dying, halting host.
[ 1897.629144] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.629327] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.629481] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.629633] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.629915] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.630071] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.630222] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.630373] option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.630648] qmi_wwan 3-1:1.4: Tx URB error: -22
[ 1897.630766] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.630923] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.631076] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.631226] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.631522] option1 ttyUSB3: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.631696] option1 ttyUSB3: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.631852] option1 ttyUSB3: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.632003] option1 ttyUSB3: usb_wwan_indat_callback: resubmit read urb failed. (-22)
[ 1897.632228] xhci-mtk 1a240000.usb: HC died; cleaning up
[ 1897.633014] usb 3-1: USB disconnect, device number 2
[ 1897.639833] qmi_wwan 3-1:1.4: Tx URB error: -19
[ 1897.640603] qmi_wwan 3-1:1.4: Tx URB error: -19
[ 1897.641248] qmi_wwan 3-1:1.4: Tx URB error: -19
[ 1897.643776] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[ 1897.644315] option 3-1:1.0: device disconnected
[ 1897.650978] qmi_wwan 3-1:1.4: Tx URB error: -19
[ 1897.651593] option1 ttyUSB3: usb_wwan_open: submit int urb failed: -19
[ 1897.651615] option1 ttyUSB3: usb_wwan_open: submit read urb 0 failed: -19
[ 1897.651624] option1 ttyUSB3: usb_wwan_open: submit read urb 1 failed: -19
[ 1897.651633] option1 ttyUSB3: usb_wwan_open: submit read urb 2 failed: -19
[ 1897.651641] option1 ttyUSB3: usb_wwan_open: submit read urb 3 failed: -19
[ 1897.652715] option1 ttyUSB2: usb_wwan_open: submit int urb failed: -19
[ 1897.652731] option1 ttyUSB2: usb_wwan_open: submit read urb 0 failed: -19
[ 1897.652739] option1 ttyUSB2: usb_wwan_open: submit read urb 1 failed: -19
[ 1897.652747] option1 ttyUSB2: usb_wwan_open: submit read urb 2 failed: -19
[ 1897.652756] option1 ttyUSB2: usb_wwan_open: submit read urb 3 failed: -19
[ 1897.654660] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[ 1897.654713] option 3-1:1.1: device disconnected
[ 1897.655549] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[ 1897.655588] option 3-1:1.2: device disconnected
[ 1897.656388] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[ 1897.656436] option 3-1:1.3: device disconnected
[ 1897.656693] qmi_wwan 3-1:1.4 wwan0: unregister 'qmi_wwan' usb-1a240000.usb-1, WWAN/QMI device
70

Sorry for the late reply, I could give you a update package, Could you please have a try? I will give the links later.

https://pan.baidu.com/s/1eccguRxOKGtBtKZI21XF5g

71

@Jackzeng Not able to download this file.

72

sorry，I’ll upload the files on google，tomorrow

73

@Jackzeng Thanks. I also found another issue is that, whenever I use the soft reset “reboot” command, the BPI-R2 reset without any issue. However, the 4G module is mounted even after mounted and got the IP address; But internet is not working. I use hard reset or power ON/OFF, then the 4G module is working fine with internet facility. Let me know your input if any on this issue and If I have any other better way to reset the hardware by some other command?.

TIA.

74

Hello,

  1. these are update files & tool
  1. Did you mean when you reset the R2, you also want to reset 4G module?
75

@Jackzeng Thanks for these updated files. Let me check it and get back to you.

  1. Yes, I want to reset the 4G module as well.
76

Also like to know whether I should update the firmware on the 4G module by using this update tool?. Any kind of instructions is appreciated.

TIA.

77

is here any plan to support multiple 4G /LTE cards/connections on this module, after all , this is a router , one 4G connection may not be enough to be shared among those interfaces ?
or is there any solid workaround for this ?

78

Hello,

I have just bought the BPI-4g module, however there are no instructions or any documentation with it at all.

It seems to be a newer model with two USB connectors. What is the purpose of having 2 ports? Which one to use?

I plan to use the module on the R2 OTG port, which cable would i use? I cannot find any MicroUSB male to MicroUSB male cable anywhere.

With the added second USB connector, the two holes to fix the board are gone. How do you expect to secure the board? Is there any area of the board where holes can be drilled to fix the board without damaging it?

Thanks

79

http://wiki.banana-pi.org/Using_4G_module_with_BananaPi

80

I know that page, however none of my questions is being answered there.

81

Hello @sinovoip. How can I make EC25-E 4G module work with BPI R64 with OpenWrt?

I installed the board to CN8 slot but after compiling OpenWrt image with kmod-usb-net-qmi-wwan support I have nothing listed under lsusb:

root@OpenWrt:/# lsusb 
Bus 002 Device 001: ID 1d6b:0003 Linux 5.10.51 xhci-hcd xHCI Host Controller
Bus 001 Device 001: ID 1d6b:0002 Linux 5.10.51 xhci-hcd xHCI Host Controller
root@OpenWrt:/# ls /dev/tty
tty    ttyS0  ttyS1

UPD: I’ve figured out that I need to enable USB support on CN8 slot by switching GPIO90 to high level. But I always get a “Resource busy” error:

root@OpenWrt:/# cat /sys/kernel/debug/gpio 
gpiochip0: GPIOs 409-511, parent: platform/10211000.pinctrl, pinctrl_moore:
 gpio-409 (                    |reset               ) in  hi IRQ 
 gpio-463 (                    |reset               ) out hi 
 gpio-490 (                    |cd                  ) in  lo IRQ ACTIVE LOW
 gpio-494 (                    |bpi-r64:pio:blue    ) out lo 
 gpio-498 (                    |bpi-r64:pio:green   ) out lo 
 gpio-499 (                    |asm_sel             ) in  lo 
 gpio-511 (                    |wps                 ) in  hi IRQ 
root@OpenWrt:/# echo 499 > /sys/class/gpio/export
ash: write error: Resource busy

I even have this line in dmesg, but GPIO90 (499 as 409+90) is still set to in/lo:

[    0.028706] gpio-499 (asm_sel): hogged as output/high
82

I have the same problem. And I think it’s a hardware issue. It doesn’t matter what driver you have compiled cause the board (not os) doesn’t see the module. GPIO90 is set to high while os is booting and gets low after that. To make sure you have pcie mode try fw_printenv bootconf.

83

If I remember correctly the issue was in my custom OpenWRT build. After I’ve reset my build environment to defaults everything started working correctly. I also resoldered CN8 resistor to increase port power ([BPI-R64] OpenWRT kernel 5.4.40 running from eMMC).