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[GH-ISSUE #35] SyntaxError : Bad control character in string literal in JSON at position 52 #158

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opened 2026-03-13 13:18:48 +03:00 by kerem · 6 comments

kerem commented

2026-03-13 13:18:48 +03:00

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Originally created by @kuyay on GitHub (Jan 29, 2023).
Original GitHub issue: https://github.com/4IceG/luci-app-3ginfo-lite/issues/35

Bad control character in string literal in JSON at position 52

root/usr/share/3ginfo-lite/3ginfo-addon/2c7c0801

Quectel RM520N-GL

Originally created by @kuyay on GitHub (Jan 29, 2023). Original GitHub issue: https://github.com/4IceG/luci-app-3ginfo-lite/issues/35 Bad control character in string literal in JSON at position 52 root/usr/share/3ginfo-lite/3ginfo-addon/2c7c0801 # Quectel RM520N-GL

kerem closed this issue

2026-03-13 13:18:53 +03:00

kerem commented

2026-03-13 13:18:59 +03:00

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@4IceG commented on GitHub (Jan 29, 2023):

Hi @kuyay ,
Thanks for reporting the bug. Show me the result of the command:
sh -x /usr/share/3ginfo-lite/3ginfo.sh

@4IceG commented on GitHub (Jan 29, 2023): Hi @kuyay , Thanks for reporting the bug. Show me the result of the command: `sh -x /usr/share/3ginfo-lite/3ginfo.sh`

kerem commented

2026-03-13 13:19:04 +03:00

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@kuyay commented on GitHub (Jan 29, 2023):

root@FriendlyWrt:~# sh -x /usr/share/3ginfo-lite/3ginfo.sh
+ RES=/usr/share/3ginfo-lite
+ uci -q get '3ginfo.@3ginfo[0].device'
+ DEVICE=/dev/ttyUSB0
+ '[' x/dev/ttyUSB0 '=' x ]
+ echo /dev/ttyUSB0
+ '[' x/dev/ttyUSB0 '=' x ]
+ '[' x/dev/ttyUSB0 '=' x ]
+ uci -q get '3ginfo.@3ginfo[0].network'
+ SECT=@modem
+ SUB=@
+ '[[' @modem '==' '*@*' ]]
+ echo @modem
+ sed s/@//
+ SEC=modem
+ '[' -z modem ]
+ CONN_TIME=-
+ RX=-
+ TX=-
+ ifstatus modem
+ grep '"up": true'
+ NETUP='       "up": true,'
+ '[' -n '      "up": true,' ]
+ uci -q -P /var/state/ get network.modem.connect_time
+ CT=
+ '[' -z ]
+ ifstatus modem
+ awk '-F[:,]' '/uptime/ {print $2}'
+ xargs
+ CT=2604
+ '[' '!' -z 2604 ]
+ expr 2604 / 60 / 60 / 24
+ D=0
+ expr 2604 / 60 / 60 '%' 24
+ H=0
+ expr 2604 / 60 '%' 60
+ M=43
+ expr 2604 '%' 60
+ S=24
+ printf '%dd, %02d:%02d:%02d' 0 0 43 24
+ CONN_TIME='0d, 00:43:24'
+ ifstatus modem
+ awk '-F"' '/l3_device/ {print $4}'
+ IFACE=wwan0
+ '[' -n wwan0 ]
+ ifconfig wwan0
+ awk '-F[()]' '/bytes/ {printf "%s",$2}'
+ RX='1.1 GiB'
+ ifconfig wwan0
+ awk '-F[()]' '/bytes/ {printf "%s",$4}'
+ TX='471.9 MiB'
+ sms_tool -D -d /dev/ttyUSB0 at 'AT+CSQ;+CPIN?;+COPS=3,0;+COPS?;+COPS=3,2;+COPS?;+CREG=2;+CREG?'
No response from modem.
+ O=
+ echo
+ awk '-F[, ]' '/^\+CSQ/ {print $2}'
+ CSQ=
+ '[' x '=' x ]
+ CSQ=-1
+ '[' -1 -ge 0 -a -1 -le 31 ]
+ CSQ=-
+ CSQ_PER=0
+ echo
+ awk '-F["]' '/^\+COPS: .,2/ {print $2}'
+ COPS_NUM=
+ '[' x '=' x ]
+ COPS_NUM=-
+ COPS_MCC=-
+ COPS_MNC=-
+ '[' x '=' x ]
+ COPS=-
+ '[' -z  ]
+ echo
+ awk '-F["]' '/^\+COPS: .,0/ {print $2}'
+ T=
+ '[' x '!=' x ]
+ echo -
+ sed ':s;s/\(\<\S*\>\)\(.*\)\<\1\>/\1\2/g;ts'
+ COPZ=-
+ echo -
+ awk '{for(i=1;i<=NF;i++){ $i=toupper(substr($i,1,1)) substr($i,2) }}1'
+ COPS=-
+ echo
+ + xargsawk
 '-F[, ]' '/^\+CPIN:/ {print $0;exit}'
+ T=
+ '[' -n  ]
+ echo
+ awk '-F[, ]' '/^\+CME ERROR:/ {print $0;exit}'
+ T=
+ '[' -n  ]
+ echo
+ awk '-F[,]' '/^\+CREG/ {gsub(/[[:space:]"]+/,"");printf "T=\"%d\";LAC_HEX=\"%X\";CID_HEX=\"%X\";LAC_DEC=\"%d\";CID_DEC=\"%d\";MODE_NUM=\"%d\"", $2, "0x"$3, "0x"$4, "0x"$3, "0x"$4, $5}'
+ eval
+ REG=-
+ CSQ=-
+ CSQ_PER=0
+ '[' -z  ]
+ echo
+ awk '-F[,]' '/^\+COPS/ {print $4;exit}'
+ MODE_NUM=
+ MODE=-
+ sms_tool -d /dev/ttyUSB0 at at+cereg

@kuyay commented on GitHub (Jan 29, 2023): ``` root@FriendlyWrt:~# sh -x /usr/share/3ginfo-lite/3ginfo.sh + RES=/usr/share/3ginfo-lite + uci -q get '3ginfo.@3ginfo[0].device' + DEVICE=/dev/ttyUSB0 + '[' x/dev/ttyUSB0 '=' x ] + echo /dev/ttyUSB0 + '[' x/dev/ttyUSB0 '=' x ] + '[' x/dev/ttyUSB0 '=' x ] + uci -q get '3ginfo.@3ginfo[0].network' + SECT=@modem + SUB=@ + '[[' @modem '==' '*@*' ]] + echo @modem + sed s/@// + SEC=modem + '[' -z modem ] + CONN_TIME=- + RX=- + TX=- + ifstatus modem + grep '"up": true' + NETUP=' "up": true,' + '[' -n ' "up": true,' ] + uci -q -P /var/state/ get network.modem.connect_time + CT= + '[' -z ] + ifstatus modem + awk '-F[:,]' '/uptime/ {print $2}' + xargs + CT=2604 + '[' '!' -z 2604 ] + expr 2604 / 60 / 60 / 24 + D=0 + expr 2604 / 60 / 60 '%' 24 + H=0 + expr 2604 / 60 '%' 60 + M=43 + expr 2604 '%' 60 + S=24 + printf '%dd, %02d:%02d:%02d' 0 0 43 24 + CONN_TIME='0d, 00:43:24' + ifstatus modem + awk '-F"' '/l3_device/ {print $4}' + IFACE=wwan0 + '[' -n wwan0 ] + ifconfig wwan0 + awk '-F[()]' '/bytes/ {printf "%s",$2}' + RX='1.1 GiB' + ifconfig wwan0 + awk '-F[()]' '/bytes/ {printf "%s",$4}' + TX='471.9 MiB' + sms_tool -D -d /dev/ttyUSB0 at 'AT+CSQ;+CPIN?;+COPS=3,0;+COPS?;+COPS=3,2;+COPS?;+CREG=2;+CREG?' No response from modem. + O= + echo + awk '-F[, ]' '/^\+CSQ/ {print $2}' + CSQ= + '[' x '=' x ] + CSQ=-1 + '[' -1 -ge 0 -a -1 -le 31 ] + CSQ=- + CSQ_PER=0 + echo + awk '-F["]' '/^\+COPS: .,2/ {print $2}' + COPS_NUM= + '[' x '=' x ] + COPS_NUM=- + COPS_MCC=- + COPS_MNC=- + '[' x '=' x ] + COPS=- + '[' -z ] + echo + awk '-F["]' '/^\+COPS: .,0/ {print $2}' + T= + '[' x '!=' x ] + echo - + sed ':s;s/$\<\S*\>$$.*$\<\1\>/\1\2/g;ts' + COPZ=- + echo - + awk '{for(i=1;i<=NF;i++){ $i=toupper(substr($i,1,1)) substr($i,2) }}1' + COPS=- + echo + + xargsawk '-F[, ]' '/^\+CPIN:/ {print $0;exit}' + T= + '[' -n ] + echo + awk '-F[, ]' '/^\+CME ERROR:/ {print $0;exit}' + T= + '[' -n ] + echo + awk '-F[,]' '/^\+CREG/ {gsub(/[[:space:]"]+/,"");printf "T=\"%d\";LAC_HEX=\"%X\";CID_HEX=\"%X\";LAC_DEC=\"%d\";CID_DEC=\"%d\";MODE_NUM=\"%d\"", $2, "0x"$3, "0x"$4, "0x"$3, "0x"$4, $5}' + eval + REG=- + CSQ=- + CSQ_PER=0 + '[' -z ] + echo + awk '-F[,]' '/^\+COPS/ {print $4;exit}' + MODE_NUM= + MODE=- + sms_tool -d /dev/ttyUSB0 at at+cereg ```

kerem commented

2026-03-13 13:19:09 +03:00

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@4IceG commented on GitHub (Jan 29, 2023):

Okay, a few things...

Are you using ModemManager? (My package is not compatible with it)

You also have my package misconfigured. Execute the command

uci set 3ginfo.@3ginfo[0].device="/dev/ttyUSB3"
uci commit 3ginfo

@4IceG commented on GitHub (Jan 29, 2023): Okay, a few things... Are you using ModemManager? (My package is not compatible with it) You also have my package misconfigured. Execute the command ``` uci set 3ginfo.@3ginfo[0].device="/dev/ttyUSB3" uci commit 3ginfo ```

kerem commented

2026-03-13 13:19:14 +03:00

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@kuyay commented on GitHub (Jan 29, 2023):

Yes sir, i'm using modemmanager, thanks for your answers!

Can you give me some advice, what can I use to connect to my modem (beside ModemManager)?

@kuyay commented on GitHub (Jan 29, 2023): Yes sir, i'm using modemmanager, thanks for your answers! Can you give me some advice, what can I use to connect to my modem (beside ModemManager)?

kerem commented

2026-03-13 13:19:19 +03:00

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@4IceG commented on GitHub (Jan 29, 2023):

It would be best to uninstall MM (which takes control of the modem and makes it difficult for other packages to access the modem) and configure the connection using a different protocol, such as qmi.

@4IceG commented on GitHub (Jan 29, 2023): It would be best to uninstall MM (which takes control of the modem and makes it difficult for other packages to access the modem) and configure the connection using a different protocol, such as qmi.

kerem commented

2026-03-13 13:19:24 +03:00

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@kuyay commented on GitHub (Jan 29, 2023):

alright sir, thanks.

@kuyay commented on GitHub (Jan 29, 2023): alright sir, thanks.

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