deuel
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BENQ M23 GSM Modem testing to hyperterminal FAILED!!! help!!
I'm using USB to UART (Serial TTL) converter (http://www.e-gizmo.com/kit2.htm) of E-Gizmo to communicate to GSM modem at PC.
But it doesn't return OK if I type AT command AT. what is the possible problem? I also used voltage divider connected from the TXD of USB to UART converter andt inputed to RXD pin of GSM modem. The TXD pin of GSM modem is directly connected to RXD pin of USB to UART Converter and they are common ground. I measure the output voltage in USB to UART and its ok and the output of the voltage divider is almost 3.3V. Is there any problem with my connection? I badly need it to function the GSM modem of E-gizmo for our thesis. Any help to those knows on this scenarion??
Thank you.
I'm using USB to UART (Serial TTL) converter (http://www.e-gizmo.com/kit2.htm) of E-Gizmo to communicate to GSM modem at PC.
But it doesn't return OK if I type AT command AT. what is the possible problem? I also used voltage divider connected from the TXD of USB to UART converter andt inputed to RXD pin of GSM modem. The TXD pin of GSM modem is directly connected to RXD pin of USB to UART Converter and they are common ground. I measure the output voltage in USB to UART and its ok and the output of the voltage divider is almost 3.3V. Is there any problem with my connection? I badly need it to function the GSM modem of E-gizmo for our thesis. Any help to those knows on this scenarion??
Thank you.
