Geeetech

hello,

I want to connect with AT89C52 Microcontroller. My program is ready . but I can't find Tx and Rx port for microcontroller to GSM . Because in This GSM total 4 Tx and Rx port .

1. Software Tx and Rx port.
2. Hardware Tx and Rx port
3. Serial Tx and Rx port
4. UART Tx and Rx port

This 4 Tx and Rx port. In This GSM but which port connect my microcontroller AT89C52 ?

And I have another question Can i Direct connect Arduino GPRS Shield Tx and Rx port to microcontroller Tx and Rx port ? Or need MAX232 between Gsm to microcontroller for this GSM ?

And Give me Same AT command for This GSM

my gsm http://www.geeetech.com/wiki/index.php/ ... PRS_Shield


Thanks
sharif

You can try Software TX RX
You can refer to AT commands at this page:
http://www.seeedstudio.com/wiki/GPRS_Sh ... hield_V2.0