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communicate between cell phone and MC ??

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felix0323

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I was using pic18f4550 and try to communicate with my cell phone(nokia 3220). I used a pl2303hx (usb to serial bridge controller) to communicate between the pinout of my cell phone and pin 23,24 (D+,D-) of the MC. But I get no response when I send AT command to the cell phone. I have used an LCD to show the feedback from the cell phone, but no response also.

So my questions are:
1. Do I need to set the baud rate or any setting for Rs232 in the MC ?
2. How can I show the feedback from the cell phone.
3. Any suggestion so that I can communicate the MC and cell phone ?

thx for all ur reply and sorry for bad language skill ....
 

google for circuit using for data cabel in nokia 3220
their are so maney project on internet like yr project
 

ya, actually i have search a lot of info for such project. but most of the project use MAx232 for their Rs232 connection..For mine case, i use pl2303hx so that my output was converter to the USB level.

today i have search some forum. i found that it was a mistake to communicate between cell phone with MC. Cause lack of a usb host controller.. am i right ?
 

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