S103-G use GSM/GPRS module to connect to internet


  • administrators

    @oho Support of the GSM functionality will be available in Mervis in the next release.



  • @roberts_lando hi iam new in node-red and S103-g my question is can you share your nice looking flow to learn better node-red.
    regards



  • @unix I have added it to node-red flows library: https://flows.nodered.org/flow/af6487676bd89e5e8b74b2c9da1e176d

    Enjoy :)



  • Nice thx for help :smile:
    Regards



  • Hi
    i have inport your data but i get one error in debug
    its "3.11.2017, 10:59:29node: parseModelIDfunction : (error)
    "TypeError: Cannot read property 'trim' of undefined""

    and the website looks like :
    Daschboard
    connect is green but no info i have only change the serial connect to
    /dev/ttyAMA0: 115200-8n1

    or i have problems whit the modem i can send the first sms whitout problems but after this only error when i test it whit cu -l /dev/ttyAMA0

    hope for hints :smile:

    Regards



  • @unix Did you close the connection after using cu? Cause that error means that I call .trim() in an undefined var (modelID) that means no data is received after the command. Each command has a timeout, after that I close the read stream from the serial and I try to parse the response string, if the response string is not well parsed those errors are normal, try to put a debug node to see the output of the serial and check that the cu session is closed.

    Disconnect: type ~ (alt+126) than wait for [unipi] output than type . and hit <Enter>



  • Hi
    yes the cu session a closed in debug i see this

    3.11.2017, 11:25:11node: 96ac4186.358femsg.payload : string[4]
    "OK↵"
    3.11.2017, 11:25:13node: 96ac4186.358femsg.payload : string[11]
    "AT+COPS? ↵"
    3.11.2017, 11:25:13node: 96ac4186.358femsg.payload : string[17]
    "+COPS: 0,0,"A1"↵"
    3.11.2017, 11:25:13node: 96ac4186.358femsg.payload : string[2]
    "↵"
    3.11.2017, 11:25:13node: 96ac4186.358femsg.payload : string[4]
    "OK↵"
    3.11.2017, 11:25:14node: parseOperatorfunction : (error)
    "TypeError: Cannot read property 'trim' of undefined"
    3.11.2017, 11:25:15node: 96ac4186.358femsg.payload : string[10]
    "AT+CGMI ↵"
    3.11.2017, 11:25:15node: 96ac4186.358femsg.payload : string[18]
    "+CGMI: "Fibocom"↵"
    3.11.2017, 11:25:15node: 96ac4186.358femsg.payload : string[2]
    "↵"
    3.11.2017, 11:25:15node: 96ac4186.358femsg.payload : string[4]
    "OK↵"
    3.11.2017, 11:25:17node: 96ac4186.358femsg.payload : string[10]
    "AT+CGMM ↵"
    3.11.2017, 11:25:17node: 96ac4186.358femsg.payload : string[38]
    "+CGMM: "GSM850/900/1800/1900","G510"↵"
    3.11.2017, 11:25:17node: 96ac4186.358femsg.payload : string[2]
    "↵"
    3.11.2017, 11:25:17node: 96ac4186.358femsg.payload : string[4]
    "OK↵"
    3.11.2017, 11:25:18node: parseModelIDfunction : (error)
    "TypeError: Cannot read property 'trim' of undefined"
    

    Regards



  • @unix I haven't the possibility to debug it right now, as your debug shows the commands are correctly received, I think you have to change the serial in-out configuration. Check it and send me a screenshot of both.

    Also try to put a debug node after join node wired with serial-out



  • @roberts_lando
    i have found one error in another flow i have running sms sender i have delete this and the error seems only the trim see screenshots.

    1 alt text
    2 alt text
    3 alt text

    Regards

    i have check the modem connect over cu and modem works and i disconnect to the modem.



  • @unix ok I have found the problem: replace \n with \r\n in both serial-in and serial-out nodes than it should work correctly! This has happen because when you have imported the flow I think you haven't already installed node-red-node-serial and the configuration got lost



  • @roberts_lando

    WTF great thx for fast response and help :smile:

    regards



  • @unix you welcome! :)



  • @roberts_lando said in S103-G use GSM/GPRS module to connect to internet:

    Hi!

    Great tutorial!

    I use Raspbian Stretch Lite and I can not get the S103-G to work with these instructions. The command cu -l / dev / ttyAMA0 crashes when I try to AT command. Ifconfig does not give ppp0.

    What have I missed?

    Vesa



  • @Vesa-Kauppinen
    Hi
    have you disable the BT on Pi3

    /boot/config.txt addline

    dtoverlay=pi3-disable-bt
    

    and on /boot/cmdline.txt remove

    serial console than its looks like

    dwc_otg.lpm_enable=0 console=tty1 root=PARTUUID=e13fdf55-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
    

    Regards



  • @unix

    Thank you for answer!

    BT disabled and cmdline.txt edited...

    No success

    @tomas_hora any ideas?

    Vesa



  • I always had compatibility problems when using Raspbian Stretch, try to use last Raspbian Jessie img and it should work



  • @roberts_lando

    Thank you for answer!

    Now i have tried with Rasbian Jessie Lite.....no success :disappointed:

    Do you use Jessie Lite or full?

    Thanks,
    Vesa



  • @Vesa-Kauppinen I think you have missed one or more step of the turorial. I suggest you to retry the tutorial and check if an instruction fails. Do you have switch on the GPRS module?



  • @roberts_lando Hi, I've done all the steps to configure the internet connection but when I type "ifconfig" it doesn't show me the ppp0 interface. Could you please help me?

    when I type the command "cat /var/log/syslog" It show me this messages:

    Sep 4 13:41:52 raspberrypi pppd[1698]: pppd 2.4.7 started by root, uid 0
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (BUSY)
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (VOICE)
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (NO CARRIER)
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (NO DIALTONE)
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (NO DIAL TONE)
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (NO ANSWER)
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (DELAYED)
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (ERROR)
    Sep 4 13:41:52 raspberrypi chat[1702]: abort on (+CGATT: 0)
    Sep 4 13:41:52 raspberrypi chat[1702]: send (AT^M)
    Sep 4 13:41:52 raspberrypi chat[1702]: timeout set to 12 seconds
    Sep 4 13:41:52 raspberrypi chat[1702]: expect (OK)
    Sep 4 13:42:04 raspberrypi chat[1702]: alarm
    Sep 4 13:42:04 raspberrypi chat[1702]: Failed
    Sep 4 13:42:04 raspberrypi pppd[1698]: Connect script failed
    Sep 4 13:42:10 raspberrypi OWFS[477]: DEFAULT: ow_reconnect.c:(72) DS2482-100 bus master reconnected
    Sep 4 13:42:30 raspberrypi OWFS[477]: DEFAULT: ow_reconnect.c:(72) DS2482-100 bus master reconnected