1.Firstly, use R2 connects LTE module by USB or 14pin Headers. then execute command "lsusb" to have a look if R2 have drove the module. The red box is the id of 4G module.
After seeing this, execute command "ls /dev/ttyUSB*" to make sure the 4G module have been recognised as USB devs.
2. Execute the "./ppp1.sh &"
then execute command “ifconfig -a”，you will see ppp0
3. Execute command ”wget -O speedtest-cli https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py” to download speed test tool.
4. Execute command "chmod +x speedtest-cli", then execute "./speedtest-cli"
ppp1_success_log.txt (5.7 KB)
1.FAQ
(1) You could get ppp1.sh from here : https://pan.baidu.com/s/1yu0nTNQKPNPzprVPjhOPUA
(2) Q: What should I do, if you meet this "expect (OK)
^M
alarm
Failed "
A:The root cause is the Modem.service has used the module usbserial, so the 4G module can’t use usbserial; we can solve the problem by using command "systemctl disable ModemManager.service " or "systemctl stop ModemManager.service "
(3) Q：How to test the communication between SIM card and 4G module？
A:Use minicom， ”minicom -D /dev/ttyUSB2”，and then use AT commands to test, such as ”at”，”at+csq”，“at+ccid”，if you get response without error，that means the communication is OK.
(4) Q: How to install libqmi?
A: Download from here: http://www.linuxfromscratch.org/blfs/view/cvs/general/libqmi.html ; then make and make install.
If you meet this:
you need to install libgudev-1.0-dev， then make and make install again.
(5) Q：How to use qmi-wwan？
A：There is a very easy way to use，I’ve put quectel-CM in home path of root，just execute “./quectel-CM &”，then execute “dhclient wwan0”，now you have finished the configurations.
(6) Q：How to use GPS？
A：BPI-4G module supports GPS and BeiDou，execute “minicom -D /dev/ttyUSB2”，then input AT commands like this：
if you want to use BeiDou，just input AT commands like this：
(7) Here are kernel configurations and driver patch for kernel 4.14.
config (120.3 KB) patch (6.6 KB)
(8) Support areas:
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EC25-E support: EMEA/Thailand/India/South Korea
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EC25-AU support: Australia
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EC25-V/-A support：North America
(9) Openwrt Supported:
A. Clone the source code from this link : BPI-R2 OpenWrt(LEDE) Souce code : 2018-04-11
B. Add qmi-wwan driver to this project :
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Execute “./scripts/feeds/ install minicom” to install minicom to openwrt project
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Execute “./scripts/feeds/ install python” to install python to openwrt project
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Execute “make menuconfig”
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Add minicom “Utilities —> Terminal —> minicom”
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Add python “Languages —> Python”
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Add driver “Network —> wwan …Genetic OpenWrt 3G/4G proto handler”
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Add "Kernel modules —> USB Support —>
kmod-usb-core
kmod-usb-net —> kmod-usb-net-qmi-wwan
kmod-usb-ohci
kmod-usb-serial —> kmod-usb-serial-option , kmod-usb-serial-wwan
kmod-usb-uhci
kmod-usb2-*
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Use these source files to replace your openwrt project source files (“build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_32/linux-4.9.44/drivers/usb(or net)/…”) :
C. Image & Stuff Link :
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Baidu Drive : https://pan.baidu.com/s/1e6bvsznfFW3PuaONz0OR1Q
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Google Drive : https://drive.google.com/file/d/1Zjj0TiZOFGlmAGmRmErqnwdSosUrLUPZ/view?usp=sharing
D. Cross-Compile quectel-CM
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Copy “quectel-CM” to Linux host PC，and change “Makefile” under the “quectel-CM”，change tools like this：
The tools are under openwrt project，you can find them according to the following picture.
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If ping Domain name fail，add “nameserver 8.8.8.8” to /etc/resolv.conf
(10) If you use mPCIE interface 4G module to connect R2 by 14 pin header，use these cmds to enable 4G module，after you did these steps，USB0 port will be disable.
- cd /sys/class/gpio/
- echo 266 > export 【# 266(gpio_offset) = 232(base) + 34(GPIO_34)】
- cd gpio266/
- echo out > direction
- echo 1 > value
