TI Chronos 915MHz Communicating with CC110L RF Boosterpack

Hi,

 

Please make sure the Deviation is same on both modules and also pleasemake sure the Rx Filter BW is wide enough to offset any frequecy tolarences in between the transmitter and receiver.

Also make sure the Preamble length and Sync words match on both devices.

Thanks,

PM

Thank you for the response. I have adjusted the settings you mentioned using the user's manual for the boosterpack (shown below) 

 0x29,  // IOCFG2           GDO2 Output Configuration
    0x2E,  // IOCFG1           GDO1 Output Configuration
    0x06,  // IOCFG0           GDO0 Output Configuration
    0xFF,  // FIFOTHR          RX FIFO and TX FIFO Thresholds
    0xD3,  // SYNC1            Sync Word, High Byte
    0x91,  // SYNC0            Sync Word, Low Byte
    0xFF,  // PKTLEN           Packet Length
    0x04,  // PKTCTRL1         Packet Automation Control
    0x45,  // PKTCTRL0         Packet Automation Control
    0x00,  // ADDR             Device Address
    0x00,  // CHANNR           Channel Number
    0x0C,  // FSCTRL1          Frequency Synthesizer Control
    0x00,  // FSCTRL0          Frequency Synthesizer Control
    0x21,  // FREQ2            Frequency Control Word, High Byte
    0x6B,  // FREQ1            Frequency Control Word, Middle Byte
    0x24,  // FREQ0            Frequency Control Word, Low Byte
    0x1A,  // MDMCFG4          Modem Configuration
    0x71,  // MDMCFG3          Modem Configuration
    0x03,  // MDMCFG2          Modem Configuration
    0x21,  // MDMCFG1          Modem Configuration
    0xE5,  // MDMCFG0          Modem Configuration
    0x71,  // DEVIATN          Modem Deviation Setting
    0x07,  // MCSM2            Main Radio Control State Machine Configuration
    0x30,  // MCSM1            Main Radio Control State Machine Configuration
    0x18,  // MCSM0            Main Radio Control State Machine Configuration
    0x1D,  // FOCCFG           Frequency Offset Compensation Configuration
    0x1C,  // BSCFG            Bit Synchronization Configuration
    0x47,  // AGCCTRL2         AGC Control
    0x40,  // AGCCTRL1         AGC Control
    0xB0,  // AGCCTRL0         AGC Control
    0x00,  // WOREVT1          High Byte Event0 Timeout
    0x00,  // WOREVT0          Low Byte Event0 Timeout
    0x00,  // WORCTRL          Wake On Radio Control
    0xB7,  // FREND1           Front End RX Configuration
    0x10,  // FREND0           Front End TX Configuration
    0xE9,  // FSCAL3           Frequency Synthesizer Calibration
    0x2A,  // FSCAL2           Frequency Synthesizer Calibration
    0x00,  // FSCAL1           Frequency Synthesizer Calibration
    0x1F,  // FSCAL0           Frequency Synthesizer Calibration
    0x59,  // FSTEST           Frequency Synthesizer Calibration Control
    0x7F,  // PTEST            Production Test
    0x3F,  // AGCTEST          AGC Test
    0x88,  // TEST2            Various Test Settings
    0x31,  // TEST1            Various Test Settings
    0x09,  // TEST0            Various Test Settings

The chronos settings match in SmartRF but I am still not getting anything to receive on the boosterpack. I am currently using SmartRF in packetTX mode to send bytes but the module is not receiving anything. The booster pack is attached to the Stellaris Launchpad with an example energia code that contains a loop which turns on the receiver. I have also attached the code for reference as well. Are there any other suggestions on what could be the issue? I thought it would be as simple as changing the Chronos settings to match the RF Boosterpack but it is proving more difficult.

Thank you again,

WG

---

#include <SPI.h>
#include <AIR430BoostFCC.h>

// -----------------------------------------------------------------------------
/**
 *  Global data
 */

// Data to write to radio TX FIFO (60 bytes MAX.)
unsigned char txData[6] = { 0x30, 'A', 'i', 'r', '!', '\0' };    

// Data to read from radio RX FIFO (60 bytes MAX.)
unsigned char rxData[6] = { '\0', '\0', '\0', '\0', '\0', '\0' };

// -----------------------------------------------------------------------------
// Debug print functions

void printTxData()
{
  Serial.print("TX (DATA): ");
  Serial.println((char*)txData); 
}

void printRxData()
{
  /**
   *  The following illustrates various information that can be obtained when
   *  receiving a message. This includes: the received data and associated 
   *  status information (RSSI, LQI, and CRC_OK bit).
   */
  Serial.print("RX (DATA, RSSI, LQI, CRCBIT): ");
  Serial.print("(");
  Serial.print((char*)rxData);
  Serial.print(", ");
  Serial.print(Radio.getRssi());
  Serial.print(", ");
  Serial.print(Radio.getLqi());
  Serial.print(", ");
  Serial.print(Radio.getCrcBit());
  Serial.println(")");
}

// -----------------------------------------------------------------------------
// Main example

void setup()
{
  // The radio library uses the SPI library internally, this call initializes
  // SPI/CSn and GDO0 lines. Also setup initial address, channel, and TX power.
  Radio.begin(0x01, CHANNEL_1, POWER_MAX);

  // Setup serial for debug printing.
  Serial.begin(9600);
  
  /**
   *  Setup LED for example demonstration purposes.
   *
   *  Note: Set radio first to ensure that GDO2 line isn't being driven by the 
   *  MCU as it is an output from the radio.
   */
  pinMode(RED_LED, OUTPUT);
  digitalWrite(RED_LED, LOW);   // set the LED on
}

void loop()
{
  // Load the txData into the radio TX FIFO and transmit it to the broadcast
  // address.
  Radio.transmit(ADDRESS_BROADCAST, txData, 6);
  printTxData();                    // TX debug information
  
  // Increment tx data sequence number ('0'-'9' ASCII) for next transmission.
  if (txData[0] >= '0' && txData[0] < '9')
  {
    txData[0]++;
  }
  else
  {
    txData[0] = '0';
  }
  
  /**
   *  The radio transmitter and receiver cannot be operated at the same time.
   *  Wait until transmit completes before turning on the receiver. Please note
   *  that the radio is considered busy when it is transmitting.
   *
   *  WARNING: If busy is not checked between two successive radio operations
   *  receiverOn/transmit, the radio may not perform the specified task. The
   *  radio must be complete with the transmission before it can begin the next
   */
  while (Radio.busy());
  
  // Turn on the receiver and listen for incoming data. Timeout after 1 seconds.
  // The receiverOn() method returns the number of bytes copied to rxData.
  if (Radio.receiverOn(rxData, sizeof(rxData), 1000) > 0)
  {
    /**
     *  Data has been received and has been copied to the rxData buffer provided
     *  to the receiverOn() method. At this point, rxData is available. See
     *  printRxData() for more information.
     */
    digitalWrite(RED_LED, HIGH);
    printRxData();                  // RX debug information
  }
  digitalWrite(RED_LED, LOW);
}

William,

Please note that the Anaren Module is using a 27MHz XTAL reference. This causes you to have to recalculate the register settings to make sure that it will work.

/TA

Ah I see. Thank you for the answer. I have changed the XTAL for the chronos watch to 27MHz in SmartRF Studio but I am still not sure how to test to make sure it works. I am still not receiving anything through the energia test program when I run the PacketTX mode. Is there an example program I can use to work off of? I am fairly sure the settings are correct now.

Thank you,

W

I was actually trying to say the that the CC1101 Anaren boosterpack uses a 27MHz XTAL and the Chronos watch uses a 26MHz XTAL and therefore you will need two different set of configuration parameters for the two chips to be able to talk to each other.

I am not familiar with our Energia software and what it does, sorry.

Regards,
/TA

Ah I see. I'm sorry I misunderstood. The XTAL for the watch is set to 26MHz and instead of setting specific registers I changed the main settings in the watch in SmartRF to match 

// TX power = 0

// Manchester enable = false

// Modulated = true

// PA ramping = false

// Channel number = 0

// CRC autoflush = false

// RX filter BW = 812.500000

// Modulation format = 2-FSK

// Address config = No address check

// Base frequency = 902.299896

// Sync word qualifier mode = 30/32 sync word bits detected

// Device address = 0

// CRC enable = true

// Data rate = 37.9868

// Carrier frequency = 902.299896

// Data format = Normal mode

// Preamble count = 4

// Whitening = false

// Channel spacing = 99.777222

// Deviation = 228.515625 

Unfortunately, I still have not had any success. I am in the process of finding a cheap packet sniffer to make sure I am properly sending data across the correct frequency but if there are any other suggestions please let me know. 

Thank you,

Will