0

I recently got a sim800c to mess around with programming and mobile networks and purchased a hologram sim card. I am trying to build a program in node.js that sends "AT" commands to the board and can send text messages.

but I can't seem to get the hologram sim card to work with this gsm module

this is my first time really messing with gsm and AT commands and im not sure where to start

I have tried looking at the sim card registration with AT+GREG? and I just get 0,0 so I figured i somehow need to set the APN or something because hologram just says it's live not connected

so I tried AT+CSTT="hologram","","" but I just get an error doing AT+CPIN? just gives me +CPIN: READY im new to this and am very confused on how to get this to work and get this gsm module connected to the network any pointers would be greatly appreciated thanks

Nik Hendricks
  • 244
  • 2
  • 6
  • 29
  • First of all: are we sure that your SIM is active? If you place it in your phone do you successfully register to the network? – Roberto Caboni Jan 01 '20 at 14:09
  • when I put it in my phone it will go active but with the gsm module it won't so I figured there must be some AT commands I need to figure out in order to register it each time it's powered on or something – Nik Hendricks Jan 01 '20 at 22:20
  • So the SIM is ok. It's a start. Next step would be the PIN code, but you write it is ready. How do you check module's registration? I don't know `+GREG` command. I know `AT+CREG?` for circuit switched network (GSM) and `AT+CGREG?` for gprs network. Which one are you providing? Please, try also `AT+CEREG?` – Roberto Caboni Jan 01 '20 at 22:26
  • ok so `AT+CPIN?` returns `+CPIN: READY` and `AT+CREG?` returns `+CREG: 0,2` and `AT+CGREG?` and `AT+CEREG?` return errors – Nik Hendricks Jan 01 '20 at 22:31
  • `+creg: 0,2` means that the registration is in progress. Wait at least 15 secs. – Roberto Caboni Jan 01 '20 at 23:19
  • now its `+CREG: 0,0` – Nik Hendricks Jan 01 '20 at 23:38
  • It surrendered... Just one stupid thing: is the antenna correctly connected? – Roberto Caboni Jan 02 '20 at 06:21
  • 1
    I'm pretty sure I mean it just threads on – Nik Hendricks Jan 02 '20 at 06:25
  • also `AT_COPS=?` just returns `+COPS: ,(0-4),(0-2)` do you think the antenna didn't get soldered right in the factory or something? – Nik Hendricks Jan 02 '20 at 22:31
  • Yes, or maybe you have low signal. Or maybe... what is the command response of `AT+COPS?` ? Is it possible that you set something different by the default? – Roberto Caboni Jan 07 '20 at 10:27

0 Answers0