Bluetooth and Software serial

Development Boards Arduino
1

I have a device with an RN-42 bluetooth module in it. It sends out a serial stream of human readable data. I am trying to read this by using a bluesmirf connected to a pro-mini. I am presently trying to relay the bluetooth data thru an FTDI cable to my computer screen to see that I am reading the bluetooth data correctly - I think I am not.

I can read by original device’s bluetooth serial data using coolterm on my mac.

I can send hard coded serial over FTDI from the pro-mini OK.

But when I try to relay the data by:

#include <SoftwareSerial.h>

int txPin = 7;  // software serial transmit pin
int rxPin = 4;  // software serial receive pin

SoftwareSerial bluetoothSerial( rxPin, txPin );  // Rx, Tx

void setup() {
  

  bluetoothSerial.begin( 115200 );
  
  Serial.begin(9600);
 
}



void loop() {
  
if(bluetoothSerial.available())  
  {
    
    char received = bluetoothSerial.read();
    
    Serial.print(received);
        
 }
 
  
   //delay(25);

}

The FTDI serial on my screen looks like this:

e…{…,…{.a.t.s.r…n{.{…n"…{Wn.r5{{.u{{…t{…i.{.ni.{…a.tu.5t{.u…

Any thoughts on what might be wrong here?

2

In the BlueSmirf Getting hookup guide:

It says

" // 115200 can be too fast at times for NewSoftSerial to relay the data reliably"

You might try the example code there which just echoes things back and forth.