mobilemedic Posted April 23, 2012 Share Posted April 23, 2012 Hello All. I hope I may find some proper direction from someone here to assit me in making this work. I am trying to get a Bluetooth link to work from my non Bluetooth cell phone. Its a old phone but I require this exact phone for my needs. I am trying to create a Bluetooth Link to my laptop and/or tablet at 38400 baud to the phone. Using the data cable to serial cable I purchased it works just fine with my USB -> serial adapter. The data cable after some disassembly is using the following lines. on the db9 and what I believe it is 1 DCD 2 RX 3 TX 4 DTR 5 Signal Ground 6 N/C 7 RTS 8 CTS 9 Ring I am using a RS232 to TTL converter based on the SP2323EEN Chip I have been waiting on some Voltage regulators and have been running both units off of 2 AA batteries to supply it the above +3 to make them work for the moment. I can hook this up to a PC and run Hyperterm.. and sync the BT on another PC and load Hyperterm and am able to send/receive text at 38400 baud just fine. So I know the issue lies in the RTS/CTS and possible DCD and DTR. I tried to loop them like you would with a null modem and no go. I assume on the modem/Phone side to enable DTR and DCD it requires voltage to make them HIGH? and possible the same for CTS/RTS. If so, how could i go abouts getting those working. Is there more than just voltage? I know taking my meter to the device when connected via the standard serial connection between PC and phone im readying around 7 volts on those lines If anyone can get me a bit closer on this project I would be greatly appreciated. Attached are pics of the 2 hardware devices I am working with. Thanks! MobileMedic Link to comment Share on other sites More sharing options...
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