These are more like “the commands i have found useful as of present.” I bear no real affinity for them, except that I do appreciate the data they yield.
| AT+COPS? | Ensure you are connected to the network (it gives “+COPS: 0” if you are not) |
| at+ccid | Get the SIM number; you need this for activation |
| AT+CMGF=1 | This sets us into text mode. I haven’t used the other mode (PDU) yet. |
| at+sapbr=3,1,”contype”,”gprs” | You can set the connection type to GPRS (data) or CSD (circuit switched) – i think this is why you can call or do data on gsm networks, but not both (at the same time). |
| at+sapbr=3,1,”apn”,”wholesale” | Until you set your access point name, you might not be able to do things like geolocate (based on cell towers) or do data stuff. TING’s APN is “wholesale” – im sure it is different for every provider. |
| at+sapbr=1,1 | Open up your bearer. . . sounds good, but im not entirely sure what that means. |
| at+cipgsmloc=1,1 | This gives you your lat/lon. Note that on my old T-Mobile sim card, which had no data plan, i got nothing back for some reason; apparently you have to have a data plan to get this info? |
For SMS (which i used only briefly) I found the following useful:
| at+cmgl=”all” | I didn’t realize this, but all text messages really are stored somewhere in the providers network, at least until you do something with them (makes sense) – i just found it interesting that I transplated my SIM card from my tmobile device to my FONA, and could see text messages from years ago. |
| at+cmgs=”180188xyzwl” | This is of course how you send a text. You press enter, after typing the phone number (“1801..” – notice the leading “1”, since im in the USA; not sure if this is needed, but it works with it). When you are done you must hit |
at+cmgr=| This is your way of reading a text message |
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For GPS I used the following (note I have v2 of the FONA808 – the commands are different for v1)
| AT+CGNSPWR=1 | The device starts with the GPS off. So i turn it on, cause i want it. |
| AT+CGNSINF | Gives you a crudload of gps-related info, including lat-lon, altitude, utc, etc. (see table 2-2 in the “SIM800 GNSS Application Note”) |