I'm attempting to program boards via the Arduino interface but using a Bluetooth serial link via an RN-42 (v6.15). I have the RN-42 paired and configured for 57600 and I am able to use a connected USB serial port to open two terminals (one via USB and one via BT) and communicate between the two terminals at 57600 with no issues. After several attempts at programming a board (cloned breadboard) through the RN-42 I used an FTDI interface to program successfully, so I know the bootloader is working as expected. I connected a terminal to the FTDI to look at the opening sequence sent by the Arduino interface to sync with the board... this was seen as a series of 0xFD. Connecting the RN-42 to the analyzer and retrying I see the sequence coming through as 0x30, 0x20 ?!? Both interfaces are set to 57600. Using a protocol analyzer I can see that 0x30,0x20 is the same exact level changes as 0xFD ... just stretched over a much longer time period. Is there some secret to this that I'm missing? Others have supposedly done this but it seems to be a hit-and-miss proposition.
I've attached the analyzer screen shots.
