serial cable replacement

Wireless & IoT
1

I am using a basic stamp microcontroller connected to a PC with a serial cable which is used for debuging and reprograming of the basic stamp. I am trying to replace the serial cable connection of the basic stamp to the PC using the BlueSMiRF module connected with the serial port of the basic stamp and the BlueTooth v1.2 USB Module connected on the PC. I managed to connect to the BlueSMiRF module but no data is coming in from the basic stamp. When I use a serial cable connection it works fine and the basic stamp is sending the data to the terminal window. I connected the Rx pin of the BlueSMiRF to the Tx pin of the db9 connector of the basic stamp and the Tx to the Rx pin and also ground and power pins are connected. I am trying to connect using the terminal window and the serial port assigned by the blutooth connection but no data is transmited.

Do I miss anything?

Do I need anything else to be able to use the BlueSMiRF module as a serial cable replacement?

Please help

2

adn29,

I am sure that you aren’t even following this thread any more, but I have been looking for a way to use the BlueSmirf as a serial cable replacement for my Board of Education for the Basic Stamp as well, so I thought I would drop what I’ve learned, and maybe someone else in the community can give us some more clues.

I have found that the BASIC Stamp uses DTR/DSR flow control, and that the BlueSmirf only has inherent connections for CTS/RTS flow control. Is there a way to force the BlueSmirf to use DTR/DSR? Could this possibly be acheived through some sort of emulation? For the most part though, I have come to terms with the fact that the BlueSmirf cannot use DTR/DSR flow control.