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Questions tagged [at-commands]

AT commands are used to control MODEMs, such as GSM/GPRS/bluetooth modules.

3
votes
2answers
13k views

Posting to php server using SIM900 GPRS with AT commands

I am using a SIMCOM SIM900 GSM/GPRS module in an embedded hardware application. Rather than sending device data to a server by SMS (what I've been doing so far) I want to switch and start using GPRS ...
1
vote
2answers
3k views

Testing a connection to a TCP socket through SIM5320A cellular module

I'm using a SIMCOM 5320A module like this one to try to establish a TCP connection. I'm going through SIMCOM's application note on TCP/IP as a reference. The AT commands I'm using may very well be ...
11
votes
9answers
46k views

What AT command should be sent to modem to get time?

I am using SIM800E. I want to know what AT command should be sent to the modem to get time? This modem has a RTC. But I need to set it automatically through cell tower. The tower can send the time to ...
21
votes
5answers
8k views

Why do people use AT commands in serial communication?

I need to know why people in embedded systems use AT commands? When I have asked people say that it is a standard. So my question is: What does "AT" means? Why do people keep saying it's a standard?
1
vote
2answers
2k views

GSM/GPRS AT command - hitting a link

I am trying to target a specific page (script) on my webserver using a GPRS modem. I can hit my domain, and get a reply back but then when I am trying to call my script it just won't let me: ...
1
vote
3answers
5k views

How to call AT command on XBee from Arduino

I am trying to set the SM (sleep mode) register on the XBee radio. These registers can be set with so called AT Commands, listed from pg. 28 in the XBee/XBee Pro Product Manual. This can be done ...
1
vote
2answers
3k views

Is it possible to send AT commands through TCP?

I have a SIM900 GSM/GPRS device, I can send AT commands through HyperTerminal and everything is fine. I can configure GPRS connection through AT commands: ...
0
votes
1answer
3k views

How do I send data over TCP from a SIM5320A?

NOTE: I have been using this as a reference. After recently purchasing a SIM5320A breakout board (the board) I have been trying to connect it to a TCP server. After having to connect the board to an ...