Quectel EM05/EC20 4G模组使用-基于openwrt系统

鸣涧 · 发表于 2022-7-2 00:14:12

Quectel EM05/EC20 4G模组使用-基于openwrt系统

一、模块简介

使用M.2物理接口，usb通信接口
支持大下行速率为150Mbps，大上行速率为50Mbps。
其包含三个版本：EM05-CE、EM05-CML和 EM05-E*，能在LTE-FDD、LTE-TDD、DC-HSDPA、HSPA+、HSDPA、HSUPA、WCDMA和CDMA等多种网络制式中进行数据通信。

二、模块使用

1.修改linux内核

1）移植USB Serial驱动

移植后模块连接到USB串行驱动时，驱动程序将在目录/dev中创建设备文件USB0/ttyUSB1/ttyUSB2…

增加PID&VID
- 修改openwrt/build_dir/target-mipsel_24kc_glibc-2.24/linux-ramips_mt7688/linux-4.4.167/drivers/usb/serial/option.c文件
  1. static const struct usb_device_id option_ids[] =
  2. {
  3. #if 1 //Added by Quectel
  4. { USB_DEVICE(0x05C6, 0x9090) }, /* Quectel UC15 */
  5. { USB_DEVICE(0x05C6, 0x9003) }, /* Quectel UC20 */
  6. { USB_DEVICE(0x2C7C, 0x0125) }, /* Quectel EC25 EM05*/
  7. { USB_DEVICE(0x2C7C, 0x0121) }, /* Quectel EC21 */
  8. { USB_DEVICE(0x05C6, 0x9215) }, /* Quectel EC20 */
  9. { USB_DEVICE(0x2C7C, 0x0191) }, /* Quectel EG91 */
  10. { USB_DEVICE(0x2C7C, 0x0195) }, /* Quectel EG95 */
  11. { USB_DEVICE(0x2C7C, 0x0306) }, /* Quectel EG06/EP06/EM06 */
  12. { USB_DEVICE(0x2C7C, 0x0296) }, /* Quectel BG96 */
  13. { USB_DEVICE(0x2C7C, 0x0435) }, /* Quectel AG35 */
  14. #endif
  15. }
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添加零包处理

修改openwrt/build_dir/target-mipsel_24kc_glibc-2.24/linux-ramips_mt7688/linux-4.4.167/drivers/usb/serial/usb_wwan.c文件

static struct urb *usb_wwan_setup_urb(

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增加休眠后唤醒接口

当MCU进入暂停/休眠模式时，一些USB主机控制器/USB集线器将失去电源或重新设置，并且在MCU退出暂停/休眠模式后，它们不能恢复USB设备。请添加以下语句以启用重新设置恢复过程。

修改openwrt/build_dir/target-mipsel_24kc_glibc-2.24/linux-ramips_mt7688/linux-4.4.167/drivers/usb/serial/option.c文件。

static struct usb_serial_driver option_1port_device = {

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2.修改openwrt配置

执行命令make menuconfig进入配置

1）内核模块Kernel modules >>
USB Support >>
   <*> Kmod -usb-core
      -*-Kmod -usb-net
   -*- kmod-usb-net-cdc-ether//【可选】
      <*> kmod-usb-net-cdc-mbim
      -*- kmod-usb-net-cdc-ncm
      <*> kmod-usb-net-cdc-subset//【可选】
      <*>kmod-usb-net-qmi-wwan
      <*>Kmod-usb-ohci    //这个选项一定要勾选，否则可能无法在系统中查看设备
      <*>Kmod-usb-serial
      <*>Kmod-usb-serial-option
      <*>Kmod-usb-serial-wwan
      <*>kmod-usb-uhci
      <*>Kmod-usb2
2）网络配置

NetWork >>
<*>wwan
<*>chat
<*>ppp
<*>uqmi
<*>umbim

3）Utilities配置

Utilities
  <*>comgt
  <*>usb-modeswitch //自动模式更改，将设备置于USB调制解调器模式
  <*>usbutils//【可选，可查看usb设备】

4）Luci配置
Luci >>
1. Collections
      <*> luci3. Applications
      <*> luci-app-multiwan (optional to support multiple 3g dongles)//新版本为mwan3 【可选】
      <*> luci-app-qos (optional to provide QOS support)//【可选】
6. Protocols
      <*> luci-proto-3g
   -*- luci-proto-ppp

3.网关配置
1）接入4G模块后，使用ls /dev命令，可以看到usb转串口设备

lsusb 命令查看usb设备

root@LEDE:~# ls usbBus
002 Device
001: ID
1d6b:0001
Linux Foundation 1.1 root hubBus 001 Device 012: ID 2c7c:0125
#PID-2c7c：VID-0125Bus 001 Device
001: ID
1d6b:0002
Linux Foundation 2.0 root hub

2）使用USB 3g / UMTS-modem进行WAN连接

参考https://openwrt.org/docs/guide-user/network/wan/wwan/3gdongle

修改\etc\config\network配置

config interface '4G'
option ifname 'ppp0'
option _orig_ifname 'eth0.2'
option _orig_bridge 'false'
option proto '3g'
option device '/dev/ttyUSB2'
option service 'umts'
option ipv6 'auto'
option keepalive '10 5'
option metric '0'

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重启网络
/etc/init.d/network restart
- 等待4G连接成功

root@LEDE:~# ifconfig
3g-4G Link encap:Point-to-Point Protocol
inet addr:10.124.22.77 P-t-P:10.64.64.64 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:25 errors:0 dropped:0 overruns:0 frame:0
TX packets:58 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:1762 (1.7 KiB) TX bytes:3818 (3.7 KiB)br-lan
Link encap:Ethernet HWaddr C6:E5:72:41:19:1D
inet addr:192.168.2.1 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::c4e5:72ff:fe41:191d/64 Scope:Link
inet6 addr: fd3f:6922:178d::1/60 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:19 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:2610 (2.5 KiB)eth0
Link encap:Ethernet HWaddr 40:D6:3C:1E:70:14
inet6 addr: fe80::42d6:3cff:fe1e:7014/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5519 errors:0 dropped:4 overruns:0 frame:0
TX packets:1579 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:476283 (465.1 KiB)
TX bytes:152174 (148.6 KiB)
Interrupt:5 eth0.1 Link encap:Ethernet HWaddr C6:E5:72:41:19:1D
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:19 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:2610 (2.5 KiB)
eth0.2 Link encap:Ethernet HWaddr C6:E5:72:41:19:1E
inet addr:192.168.3.94 Bcast:192.168.3.255 Mask:255.255.255.0
inet6 addr: fe80::c4e5:72ff:fe41:191e/64
Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1170 errors:0 dropped:0 overruns:0 frame:0
TX packets:280 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:70616 (68.9 KiB) TX bytes:22980 (22.4 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:2204 errors:0 dropped:0 overruns:0 frame:0
TX packets:2204 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1 RX bytes:189751 (185.3 KiB) TX bytes:189751 (185.3 KiB)
wlan0 Link encap:Ethernet HWaddr 40:D6:3C:1E:70:14
inet6 addr: fe80::42d6:3cff:fe1e:7014/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:1856 (1.8 KiB)

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