I'm (thinking of) starting a new project. I want to interface an Arduino to a mobile phone (not a modem) and use the Arduino to send out SMS messages via the phone. I understand I need to use "AT" commands to do this, but that's the extent of my knowledge so far. Is anyone aware of any published projects that show how to do this? I'd like to see some code examples, or even better a suitable library.
Any help appreciated
The specific AT commands are going to depend on the specific phone.
thanks, but I had thought that the AT commands were supposed to conform to some form of international standard? I just want to send SMS's. I'm not interested in interrorgating the phone, checking for new SMS's or looking up phone numbers on the SIM card or doing any other phone specific stuff, I just want to send SMS's, nothing else. I would however like to be able to plug in any phone and use that without having to change code.
There are a whole variety of AT commands. Some phones respond to some. Other phones respond to other commands. If you have a specific phone with a serial port, and you can connect to it's serial port, you MAY be able to find out which commands it responds to, and what the response is.
Universal? Not likely.
Friends,
SMS related AT commands are standart and universal. it is described as GSM07.05 standarts. some of the related commands are:
AT+CSCA = SMS Center phone number (depends on operator)
AT+CMGD = delete sms
AT+CMGS = send sms
AT+CMGR = read sms
hope it helps to start.. reha