2. method – use AT+CMSS command (send message form memory) like implemented here: http://www.riccibitti.com/tinyplanet/tiny_article.htm
- very easy and simple way to send predetermined message, can take one line of code in Arduino like: Serial.println(“AT+CMSS=1”); // send message which is stored in memory under number 1. It doesn’t take any resources or specialized programming skills to send message this way.
I've tried using this method of sending an sms with my T20e, but had no luck.
I've successfully connected with hyperterminal via arduino to my phone. "AT" test command works (response OK), I can read and delete sms via "AT+CMGR" and "AT+CMGD" commands and I've also setup "AT+CPMS="ME","ME"" successfully.
I can even make phone calls via "ATD" command, but I simply can't get "AT+CMSS" command to work. Everytime I get the same response "ERROR".