Hello Hello eevblog!
I'm doing a Telemetry Balon control system and i need some help with the communication.
We are supposed to implement a Cinterion BGS2-E Modem and extablish the communication via SMS.
So, looking through the datasheet, and the AT commands file (wich is 500pages long

) i still have some questions...
datasheett pdg -
http://www.ultran.ru/sites/default/files/bgs2_hd_v01301.pdfAT Commands pdf -
http://ultran.ru/sites/default/files/bgs2-e_atc_v01301.pdfSo, the add-on board was not developed by me, and so, the add-on board only have (taking aside the BATT+, GND, ON, EMERG_RST, V180, V285, GPIO5(led indicator) and some other GPIO's that i didnt really found a meaning for them, and the I2C ports...
The only way i can communicate, "I think", witch the module is using I2C, but i have those two problems.

1st one-
Its not listed nowhere where we can send mensages (i think they say the TX and RX by UART? but i'm not shure), and if they say that, i don't have those pins available for me, as u can see in the picture.
Also, if I2C works i can“t search for his address in the datasheet, when i use CTR+F and it dosent seem to be in the I2C serial comunication part (or i missed it)
SO, how do i comunicate with it.
2ndtopic...
Other thing i can't find is some kind of self test command...
Please respond to this, i don't need you to really anwser(what would be the fun in that) but if u do, its no problem. I just need some pointers...
I tried to search for some C examples in the internet but mehhh....
This device is for use with a MSP430 (but that dosen't really matter for the questions i asked...
Best regards, any questions plz ask away