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How to use the 4G extension
4G extension on the uConsole is power down by default
run enable_4g_cm4.sh or uconsole-4g-cm4 enable, depends on the version of your os image, both can do the same job
Please wait for it to complete, which may take about 20 seconds. Please be patient and try not press ctrl+c.
next is VERY IMPORTANT, to check the version of your 4G extension by AT commands:
echo -en "AT+CUSBPIDSWITCH?\r\n" | sudo socat - /dev/ttyUSB2,crnl
we expecting to see 9001
if you are other module number ,eg :9011
you don't need any following steps
just make sure the SIM card inserted correctlly,and use sudo ifconfig to see if there is a usb0
if there is a usb0,then all is set
normally you will have ipv4 and ipv6 address,now you can use 4G card to view internet
use mmcli -L to see if there is a modem like
/org/freedesktop/ModemManager1/Modem/0 [QUALCOMM INCORPORATED] SIMCOM_SIM7600G-H
if not ,try
sudo systemctl restart ModemManager
then
use mmcli -L to check again, some modems will require ModemManager to restart to see the device
If unpack your back shell , you also will see a green LED light is flashing on 4G ext once got power on
run enable_4g.sh or uconsole-4g enable depends on the version of your os image, both can do the same job
Please wait for it to complete, which may take about 20 seconds. Please be patient and try not press ctrl+c.
next is VERY IMPORTANT, to check the version of your 4G extension by AT commands:
echo -en "AT+CUSBPIDSWITCH?\r\n" | sudo socat - /dev/ttyUSB2,crnl
we expecting to see 9001
if you are other module number ,eg :9011
you don't need any following steps
just make sure the SIM card inserted correctlly,and use sudo ifconfig to see if there is a usb0
if there is a usb0,then all is set
normally you will have ipv4 and ipv6 address,now you can use 4G card to view internet
use mmcli -L to see if there is a modem like
/org/freedesktop/ModemManager1/Modem/0 [QUALCOMM INCORPORATED] SIMCOM_SIM7600G-H
and if unpack your back shell , you will see a green LED light is flashing on 4G ext
for this purpose,we need nmcli to create a gsm connection first
mmcli -m any | grep "primary port"
you will get like cdc-wdm0 or ttyUSB2 , if you got cdc-wdm0, we suggest blacklisting some kernel modules by
sudo bash -c 'cat << EOF > /etc/modprobe.d/blacklist-qmi.conf
blacklist qmi_wwan
blacklist cdc_wdm
EOF'
ttyUSB2 is what we want,but cdc-wdm0 is still worth to try if you knew it well
sudo nmcli c add type gsm ifname ttyUSB2 con-name 4gnet apn [yourapn] gsm.username [gsmusername] gsm.password [gsmpassword]
sudo nmcli c up 4gnet
then if everything goes right, you will see ppp0 in sudo ifconfig , which means you got an PPPoE connection and an IP address
The connectivity of 4G may vary in different countries around the world, so please make appropriate adjustments based on the situation of your ISP operator, which may require some Linux-related skills.
We use AT commands to get GPS data
cpi@raspberrypi:~ $ echo -en "AT+CGPS=1\r\n" | sudo socat - /dev/ttyUSB3,crnl
OK
cpi@raspberrypi:~ $ echo -en "AT+CGPSINFO\r\n" | sudo socat - /dev/ttyUSB3,crnl
+CGPSINFO: 3036.995500,N,12016.782856,E,200224,082124.0,40.5,0.0,
OK
cpi@raspberrypi:~ $ echo -en "AT+CGPS=0\r\n" | sudo socat - /dev/ttyUSB3,crnl
make sure the GPS antenna is connected to the GNSS port on 4G extension