Find number of RX and TX-pin on ArduiMu v3+ for Software Serial

Other Hardware 3rd Party Boards
1

I've got an Arduino V3+ and need to find the correct PIN number for its RX and TX-pin on the FTDI-connector.

How can I find out the correct number of them to use them with the SoftwareSerial-library SoftwareSerial mySerial(bluetoothTx, bluetoothRx)?

Why I need the PIN numbers:
I'm connecting a Sparkfun Bluetooth Mate/BlueSMIRF to the ArduiMUs FTDI headers and need to set a few settings in its command mode before it operates without flaws.

This is the code:

#include <SoftwareSerial.h>

int bluetoothTx = 1;  // TX-O pin of bluetooth mate, Arduino D2
int bluetoothRx = 0;  // RX-I pin of bluetooth mate, Arduino D3
SoftwareSerial bluetooth(bluetoothTx, bluetoothRx);

void setup()
{
  Serial.begin(9600);  // Begin the serial monitor at 9600bps

  bluetooth.begin(115200);  // The Bluetooth Mate defaults to 115200bps
  bluetooth.print("$$");  // Enter command mode
  delay(5000);  // Short delay, wait for the Mate to send back CMD
  bluetooth.println("U,9600,N");  // Temporarily Change the baudrate to 9600, no parity
  // 115200 can be too fast at times for NewSoftSerial to relay the data reliably
  bluetooth.begin(9600);  // Start bluetooth serial at 9600
}

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2

Those are connected to the pins used by thehardware serial (0 and 1), the same as is used for serial monitor and reprogramming.

So for the code above where you have serial and the Bluetooth serial at the same time, you need to use different pins for the Bluetooth software serial.

3

Or would it suffice to send those messages via the ordinary Serial-port of the bluetooth device? -> Serial.print("$$$") to engage command mode, then Serial.println("Whatever Command")?

Since the bluetooth device engages command mode upon receiving $$$ without a newline I think this could work.

EDIT:

I tried this to set the Bluetooth Mate in Command Mode (LED on the Bluetooth module should blink very fast), but it doesn't:

void setup()
{
  Serial.begin(9600);  // Begin the serial monitor at 9600bps
  Serial.print("$$");  // Enter command mode
  delay(10000);  // Short delay, wait for the Mate to send back CMD
  Serial.println("U,9600,N");  // Temporarily Change the baudrate to 9600, no parity
}
4

Didn't you say the Bluetooth thing defaulted to a higher baud?