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Hi, thank you very much.
popen seems to works ok. But there s a problem with pclose();

when I write:

file = popen ("cu -l /dev/ttyACM0 -s 9600", "w"); //WRITE
fputs("AT\n",file);...

Hi, with this command:

cu -l /dev/ttyACM0 -s 9600 > name.txt

I put the output of the port in a txt

Is posible to do the same (or similar) in a var directly, inside a C program?

cu -l...

Buenas, estoy intentando hacer lo siguiente:
Enviar un comando at a un telefono movil y recibir la respuesta para tratarla.
Algo estaré haciendo mal que usando open, write y read, solo consigo...