I am trying out my new blue tooth interface which connects via serial port to laptop, there i link it to my PC bluetooth card, after pairing i launch hyper terminal on both systems and setup commports,
after that I can send serial data to the firefly(serial card) from the PC card, with NP!
but when i try to send data back (from the firefly to the PC) it no work, but TX continues to be oK?
Hyper Terminal is NOT recommended. Use something like Bray's terminal instead. It could be a software or hardware flow control setting that's not set properly.
I prefer TeraTerm over Bray Terminal. If you want to use TeraTerm though, I suggested editing the INI file to increase the maximum COM Port to 16 instead of 4.