Ping to CC2540 Host Test App from Arduino?

Hi TI Community:

I am unable to get a response from a CC2540. I would appreciate any assistance. Thanks, in advance.

I am building a new home entertainment system called Votsh Waves (Details at http://www.votsh.com). I have constructed a custom pc board that has an Atmel ATmega256RFR2 and CC2540. The CC2540 has the HostTestAPP installed. The pin connections are:

2540               ATmega256RFR2

37 P1_7 TX1 <--> PD3

38 P1_6 RX1  <--> PD2

I wrote a sketch in Arduino IDE as:

#include <Arduino.h>    // Arduino main libraries
#include <SPI.h>        // Serial Device Interface 
#include <Wire.h>       // TWI/I2C library for Wiring & Arduino

unsigned long time = 0;
int firsttime = 1;

void setup(){

  Serial1.begin( 115200 );
 
  Serial.begin( 115200 );

  time = millis();

}

void loop(){

  while ( Serial1.available() )
  {
    Serial.print( "Received " );
    byte data0 = Serial1.read();
    Serial.print( data0 );
    Serial.println( "." );
  }

  if ( firsttime )
  {
    firsttime = 0;
    Serial.println( "BLE Experiment Started" );
  }

  // Do this every 1 second
  if ( ( time + 2000 ) < millis() )
  {
    time = millis();

    Serial.println("Sending command");
    byte buf[] = { 0x01, 0x09, 0x10, 0x00 };
    Serial1.write(buf, 4);
  
  }  
}

I chose the commands (x01, x09, x10, x00) from notes I found at http://e2e.ti.com/support/wireless_connectivity/f/538/t/206742.aspx. These command bytes should return the board address, according to the forum page.

I download the sketch to the Arduino, open the Serial Monitor and see:

BLE Experiment Started
Sending command
Sending command
Sending command
Sending command

There is no response from the 2540.

Any assistance would be greatly appreciated. Thank you.

-Frank