CC1101 Receive not working .Can somebody help ?

cc110L_easy_link_msp_exp430g2.zipWe have a easylink example for the MSP-EXP430G2 launchpad, see attached.

If you don't have a spectrum you should consider using SmartRF Studio. If you have a EM aimed on the 433 MHz band a TRXEB you can set the radio in cont. Rx and see if the RSSI goes up when you are supposed to send something. If you have a logic analyzer you can also set the receiver in async mode and monitor the output. If you actually sending something you should be able to recognize you sent packet in the data. 

Also check that the correct GDO pin is connected to the MSP.

The codes are more or less similar.I'm especially worried about the following piece of code that I'm trying to execute which is not working at all.

Could you please take a look and tell me what is wrong.

MAIN ROUTINE :

if(cc1101.ReceivePacket(rxBuffer, &len))

{

short s = cc1101.GetRSSI();

LED_PxOUT ^= LED1;

cc1101.SetReceive();

}

RECEIVE PACKET FUNCTION :

char CC1101::ReceivePacket(char *rxBuffer, char *length)
{
  char status[2];
  char pktLen;
  char returnval = 0;
  if ((SPIReadStatus(RXBYTES) & NUM_RXBYTES))
  {
    pktLen = SPIReadReg(RXFIFO); 			// Read length byte

    if (pktLen <= *length)                  // If pktLen size <= rxBuffer
    {
      SPIReadBurstReg(RXFIFO, rxBuffer, pktLen); // Pull data
      *length = pktLen;                     // Return the actual size
      SPIReadBurstReg(RXFIFO, status, 2);
                                            // Read appended status bytes
      returnval = (char)(status[LQI_RX] & CRC_OK);
    }                                       // Return CRC_OK bit
    else
    {
      *length = pktLen;                     // Return read size
      SPIStrobe(SFRX);      				// Flush RXFIFO
    }
  }

      return returnval;							//1 = good, 0 = bad
}

In the above code the compiler never enters the true logic of  if ((SPIReadStatus(RXBYTES) & NUM_RXBYTES))

I cannot seem to find any wrong with the code.

Hi

Start by making the code as simple as possible.

1. Use SmartRF Studio to generate settings for you. Do not do any changes to the typical settings.
2. Implement TX code to send one packet
   1. Power up device
   2. Reset CC1101 according to the manual reset routine in the data sheet
   3. Configure the radio with settings from SmartRF Studio
   4. Read back the values you have written to the registers to verify that the SPI is working correctly
   5. Write packet to TXFIFO (3, 1, 2, 3)
   6. Strobe STX
   7. Verify that the packet is sent (GDO0 is asserted and then de-asserted)
   8. On the receiver
      1. Power up device
      2. Reset CC1101 according to the manual reset routine in the data sheet
      3. Configure the radio with settings from SmartRF Studio
      4. Read back the values you have written to the registers to verify that the SPI is working correctly
      5. Strobe SRX
      6. Wait for packet to be received (GDO0 is asserted and then de-asserted)

If you never get a pulse on the GDO0 line on the receiver, the packet was never received.

Siri