Ping to CC2540 Host Test App from Arduino?

Using Arduino Networking, Protocols, and Devices
#1

Hi Arduinoistas!

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 TI BLE 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

#2

The above sketch is correct. The mistake was mine, the crystal for the CC2540 was 16MHz and should have been 32Mhz.

#3

Hello,

Could you please tell us what do you mean? You went to the build.cfg file of cc2540 and you comment the SET_32KHz_OSC();

as the following : ???

define HAL_BOARD_INIT() \

{ \ /* Set to 16Mhz to set 32kHz OSC, then back to 32MHz / \ START_HSOSC_XOSC(); \ SET_OSC_TO_HSOSC(); \ /*SET_32KHZ_OSC();/ \ SET_OSC_TO_XOSC(); \ STOP_HSOSC(); \ \ /* Enable cache prefetch mode. */ \ PREFETCH_ENABLE(); \ }

Could you please help us how it worked with cc2540 ? Thank you,

#4