[SOLVED] question about TC35 from Siemens

[aliyesami]

I like this modem and the sales rep is saying it does not need any drivers but I read a 2 years old post on arduino forum from a person who was refering to some phone library he said was needed to work this with Arduino .
can someone shed some light on this please ?

thanks

 

[FvM]

Serial GSM modems like TC35 are controlled by simple AT commands, thus you can take talk to it with any programmable device that exposes a serial interface, using any programming language of your choice.

Nevertheless there are AT command or GSM libraries for various devices that do the low level work for you, but they aren't specific to TC35. E.g. https://arduino.cc/de/Reference/GSM

 

[aliyesami]

i see this GSM library e.g is using a function called beginSMS which sends an SMS text .
so I guess i have to modify these functions if i want to use this library for TC35 ?
and if thats the case how does the library work cause I am not seeing any AT commands in the beginSMS function for example ?

thanks

 

[FvM]

Every GSM modem uses AT commands. Most actions can be performed with generic commands, without taking care for a specific modem model.

 

[aliyesami]

so is there a library that is specific to TC35 ? would the sendSMS function in this general GSM libray will work for TC35 ?
I still am puzzled how this function works since I dont see any AT command .

 

[FvM]

Obviously you didn't look into the GSM library sources. I'm not working with Arduino, but I can confirm that you'll find a lot fof AT command sequences in the respective library modules.

 

[aliyesami]

hi !

I did look into the libraries just cant find any header files with AT command refrence . I will open a new thread about this since its not related with the current thread.
thanks again for your help