SNR是指信噪比，信号与噪声的比值，值越大就证明信号的功率比噪声功率大，信号质量越好。
C/N, C/No这两个是载噪声比值，一般是指GPS的射频噪声值，
C/N这个值是一般芯片或者是模块不包含发射链路的噪声值，
而C/No是从信号到天线发射整条链路的噪声值，一般这两个值在模块中都有提及。
Copy it from SNR，C/N, C/N0分别是什么意思，啥啥分不清楚，请技术大拿帮忙解答下
環境: Xubunt20.04
Get IP for MV31-W
#!/bin/bash
function cecho
{
if [ "$1" == "red" ]; then
echo -e "\033[31m$2\033[0m"
elif [ "$1" == "blue" ]; then
echo -e "\033[34m$2\033[0m"
else
echo $2
fi
return 0
}
function SendCommand
{
sleep 2 #Avoid running AT command too fast to hung
USBinterface=$1
echo -e "\n"
echo -e "AT cmd:$2"
echo -n -e "$2" > $USBinterface
while read line < $USBinterface;
do
echo -n -e "$line" | grep 'ERROR'
if [ $? -eq 0 ]; then
cecho "red" "Error Code: -1002, Invalid AT command"
exit 1
fi
echo "$line" | grep -v 'OK'
echo "$line" | grep 'OK'
if [ $? -eq 0 ]; then
return 0
fi
done
}
function MBIM_PrepareDriver
{
drv_name=("option" "usb_wwan" "usbserial" "cdc_mbim")
ret=0
for drv in ${drv_name[@]}
do
#echo $drv
ret=$(lsmod | grep $drv | cut -f 1 -d " ") #drv: driver
if [ -z "$ret" ]; then
cecho "red" "Please install the driver of \"$drv\" with modprobe"
fi
done
ret=$(cat /sys/bus/usb-serial/drivers/option1/new_id)
if [ -z "$ret" ]; then
echo "1e2d 00b3" | sudo tee /sys/bus/usb-serial/drivers/option1/new_id
fi
}
function QMI_PrepareDriver
{
#drv_name=("option" "qmi_wwan" "cdc_mbim")
drv_name=("option" "qmi_wwan")
ret=0
for drv in ${drv_name[@]}
do
#echo $drv
ret=$(lsmod | grep $drv | cut -f 1 -d " ") #drv: driver
if [ -z "$ret" ]; then
cecho "red" "Please install the driver of \"$drv\" with modprobe"
fi
done
}
function GetInterface
{
dev=$(ls /dev/ttyUSB* | awk -F "\/" '{print $3}')
if [ -z "$dev" ];then
cecho "red" "Error code: -1001, Can't found the /dev/ttyUSB* "
exit
else
echo "$dev"
fi
}
function MBIM_PrepareGetIP
{
#install libmbim-utils
ret=$(whereis mbimcli | cut -f 2 -d " ")
if [ "$ret" == "mbimcli:" ];then
sudo apt-get install libmbim-utils
fi
#install udhcpc
ret=$(whereis udhcpc | cut -f 2 -d " ")
if [ "$ret" == "udhcpc:" ];then
sudo apt-get install udhcpc
fi
#write profile in /etc/mbim-network.conf
APN=INTERNET #CHT
APN_USER=
APN_PASS=
PROXY=yes
sudo echo -e "APN=$APN\n" \
"APN_USER=$APN_USER\n" \
"APN_PASS=$APN_PASS\n" \
"PROXY=$PROXY" > /etc/mbim-network.conf
#chect if the /dev/cdc-wdm exitis
if [ -z /dev/cdc-wdm[0-9] ];then
cecho "red" "Error Code: -1004, /dev/cdc-wdm* is null"
exit 1
else
cdc_wdm=$(ls /dev/ | grep cdc)
fi
flag=0
for wwan in $(ls /sys/class/net)
do
if [ -d "/sys/class/net/$wwan/device/driver" ]; then
ret=$(basename $(realpath /sys/class/net/$wwan/device/driver))
if [ "$ret" == "cdc_mbim" ]; then
flag=1
break
fi
fi
done
wwan0=$wwan
if [ "$flag" -eq 0 ]; then
cecho "red" "Error Code: -1005, can't find wwan interface."
exit 1
fi
#Get IP and connect the Internet
sudo ip link set $wwan0 down
sudo mbim-network /dev/$cdc_wdm start
sudo mbimcli -d /dev/$cdc_wdm --device-open-proxy --query-ip-configuration
sudo udhcpc -i $wwan0
sudo ip link set $wwan0 up
##unsure why the wwan0 value can not return
}
function QMI_PrepareGetIP
{
#install libmbim-utils
ret=$(whereis mbimcli | cut -f 2 -d " ")
if [ "$ret" == "qmicli:" ];then
sudo apt-get install libqmi-utils
fi
#install udhcpc
ret=$(whereis udhcpc | cut -f 2 -d " ")
if [ "$ret" == "udhcpc:" ];then
sudo apt-get install udhcpc
fi
#write profile in /etc/qmi-network.conf
APN=INTERNET #CHT
APN_USER=
APN_PASS=
PROXY=yes
sudo echo -e "APN=$APN\n" \
"APN_USER=$APN_USER\n" \
"APN_PASS=$APN_PASS\n" \
"PROXY=$PROXY" > /etc/qmi-network.conf
#chect if the /dev/cdc-wdm exitis
if [ -z /dev/cdc-wdm[0-9] ];then
cecho "red" "Error Code: -1004, /dev/cdc-wdm* is null"
exit 1
else
cdc_wdm=$(ls /dev/ | grep cdc)
fi
wwan0=$(sudo qmicli -d /dev/$cdc_wdm -p --get-wwan-iface)
if [ $? -gt 0 ]; then
cecho "red" "Error Code: -1003, invalid wwan0 interface"
exit 1
fi
#Get IP and connect the Internet
sudo qmicli -d /dev/$cdc_wdm --dms-set-operating-mode='online'
sudo ip link set $wwan0 down
sudo echo 'Y' | sudo tee /sys/class/net/$wwan0/qmi/raw_ip
sudo ip link set $wwan0 up
sudo qmicli -d /dev/$cdc_wdm --wda-get-data-format
##sudo qmicli -p -d /dev/cdc-wdm0 -p --wds-start-network="apn='YOUR_APN',username='YOUR_USERNAME',password='YOUR_PASSWORD',ip-type=4" --client-no-release-cid
sudo qmi-network /dev/$cdc_wdm start
sudo udhcpc -i $wwan0
}
function TestIP
{
#test
sync
sleep 3
echo "Ping a Network for Testing Connectivity"
ping -c 5 1.1.1.1
if [ $? -eq 0 ];then
cecho "blue" "ping 1.1.1.1 successed"
else
cecho "red" "ping 1.1.1.1 failed"
fi
ping -c 5 tw.yahoo.com
if [ $? -eq 0 ];then
cecho "blue" "ping tw.yahoo.com successed"
exit 0
else
cecho "red" "ping tw.yahoo.com failed"
exit 1
fi
}
#--Help---------------------------------------------------------------------------------
Devinterface=
Open_Qxdm_RecLog=0
TEST=0
COUNTER=0
MBIM=1 #default
QMI=0
function usageExit()
{
cat >&2 << EOF
telit.sh - Quick link to Internet for test
telit.sh [options]
options:
-h, --help Show this menu
-p, --path device_path Specify the port for AT command, such as: /dev/ttyUSB*
-t, --test counter Test the speed performance
-x, --qxdm device_path Run some AT commands ahead of time to log file using qxdm_logger_x64
-q, --qmi QMI mode
-m, --mbim MBIM mode (default)
EOF
exit 0
}
function checkArgExit()
{
if [[ $# -lt 2 ]]; then
echo "Missing argument for option $1" >&2
usageExit
exit 1
fi
}
# Parse arguments
if [ $# -lt 1 ]; then
cat >&2 << EOF
Enter paramaters, such as:
suod ./telit.sh -m -p /dev/ttyUSB0 for MV31,
sudo ./telit.sh -q -p /dev/ttyUSB2 for FN990,
The default mode is MBIM, please use paramater -q or -m to switch QMI/MBIM mode
EOF
exit 0
else
while [ -n "$1" ]; do
case "$1" in
-h|--help)
usageExit
;;
-q|--qmi)
QMI=1
MBIM=0
shift 1
;;
-m|--mbim)
QMI=0
shift 1
;;
-p|--path)
checkArgExit $@
Devinterface=$2
shift 2
;;
-x|--qxdm)
cecho "blue" "please check "at^diag_enable?" value is 1"
checkArgExit $@
Devinterface=$2
Open_Qxdm_RecLog=1
shift 2
;;
-t|--test)
checkArgExit $@
COUNTER=$2
TEST=1
shift 2
;;
-v|--version)
echo version="1.1"
exit
;;
*)
echo "Unknown option $1" >&2
echo >&2
usageExit
;;
esac
done
fi
if [ ! "$TEST" -eq 1 ]; then
#turn off ModemManager.service
#cecho "red" "Ready to turn off ModemManager.service, it will take a while..."
#cecho "red" "Press 'q' to exit"
sudo systemctl stop ModemManager.service
#sudo systemctl status ModemManager.service
sleep 2
#echo tty=${Devinterface##*/}
#echo tty1=$tty
tty=$(basename $Devinterface)
ret=$(ps -ef | grep -i $tty | grep -iv $0 | grep -v grep)
if [ ! -z "$ret" ]; then # $ret is not empty
echo "There are other programs in the background to occupy $Devinterface"
exit 1
fi
exec <> $Devinterface
fi
if [ "$Open_Qxdm_RecLog" -eq 1 ]; then
SendCommand $Devinterface "AT+CFUN=0\r"
sleep 1
SendCommand $Devinterface "AT+CFUN=1\r"
SendCommand $Devinterface "at^diag_enable?\r"
#The following information must be sent to Thalse
cecho "red" "The following information must be sent to Thalse - start"
SendCommand $Devinterface "at^debug?\r"
SendCommand $Devinterface "ati1\r"
SendCommand $Devinterface "at^version?\r"
SendCommand $Devinterface "at+cops?\r"
SendCommand $Devinterface "at+cimi\r"
SendCommand $Devinterface "at+csq\r"
SendCommand $Devinterface "at^sbfs?\r"
SendCommand $Devinterface "at^mcfg?\r"
SendCommand $Devinterface "at^band_pref_ext?\r"
cecho "red" "The following information must be sent to Thalse - end"
cecho "red" "The following information must be sent to Thalse - end"
cecho "red" "The following information and *.qmdl must be sent to Thalse - end"
exit 0
fi
if [ "$TEST" -eq 1 ]; then
ii=0
log=speedtest_log.txt
if [ ! -f "./speedtest-cli" ];then
wget -O speedtest-cli https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py
chmod +x speedtest-cli
fi
ret=$(whereis netperf | cut -f 2 -d " ")
if [ "$ret" == "netperf:" ];then
sudo apt install netperf
fi
while [ $ii -lt $COUNTER ]
do
TIMESTAMP=`date +%Y-%m-%d_%H:%M:%S`
ping -c 5 1.1.1.1
echo -e "Timestamp: $TIMESTAMP, OK\n" >> $log
if [ $? -eq 0 ];then
cecho "blue" "ping 1.1.1.1 successed"
./speedtest-cli > /tmp/speedtest_result
cat /tmp/speedtest_result | grep "Download\|Upload\|Packet" >> $log
echo -n -e "\r" >> $log
echo -e "---> netperf -4 -H \"netperf-eu.bufferbloat.net\" -t TCP_MAERTS -l 10 -v 1 -P 1 "
netperf -4 -H "netperf-eu.bufferbloat.net" -t TCP_MAERTS -l 10 -v 1 -P 1
sleep 1
echo -e "\n---> netperf UL test "
echo -e "---> netperf -4 -H \"netperf-eu.bufferbloat.net\" -t TCP_STREAM -l 10 -v 1s -P 1 "
netperf -4 -H "netperf-eu.bufferbloat.net" -t TCP_STREAM -l 10 -v 1 -P 1
sleep 1
sleep 60
else
cecho "red" "ping 1.1.1.1 failed"
echo -e "Timestamp: $TIMESTAMP, Fail\n" >> $log
fi
ii=$((ii+1))
done
exit 1
fi
#dev=$(GetInterface)
#dev=($dev)
SendCommand $Devinterface "AT+COPS?\r"
if [ "$MBIM" -eq 1 ]; then
cecho "blue" "mbim"
MBIM_PrepareDriver
MBIM_PrepareGetIP
elif [ "$QMI" -eq 1 ]; then
cecho "blue" "qmi"
QMI_PrepareDriver
QMI_PrepareGetIP
fi
TestIP
exit
systemctl disable ModemManager.service後，電腦重新開機
或是確認 cdc_mbim.ko 是否有掛載
Linux Driver:
4.9.309 support (keyword: 1e2d and 00b3)
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