I would like to access any I/O pins of a bluetooth module of the likes of HC-06, HM-10 or their clones from both a Windows PC and/or Android system connected wirelessly to the module. I need Windows for one project and Android for another; they wouldn't use the same bluetooth module at the same time (that would be impossible, of course).
The 6 (or 4) pin header on the HC-06 and similar modules have nothing like a RS232 signal except for Tx and Rx, so I'd need to take those directly from the castellation in the smaller module soldered on it.
Since Windows and Android "see" the device as a serial port, I'd think the RS-232 signals like DTR, CTS, DCD, RTS, etc, should be available on the module and accessible to the remote end, but so far I've got no luck with programs like RealTerm to monitor or change any of the module's pins. I want to pass low throughput signals (e.g. low battery, turn LED on, etc.) remotely. Both the Android cell phone and the Windows PC have their own standard internal bluetooth adapters.
Something along these lines:
Can this be done? How?