Receiving Access Address for nRF52840 Radio

[TigerD]

Hi,

i have nRF52840 DK.

I am working on radio test code based radio_test example code with nRF5_SDK_17.0.2_d674dde version.

If the transmitter is configured as :   (BLEN = 4, BIG_ENDIAN)

    NRF_RADIO->TXADDRESS   = 0x00UL; 
   
    nrf_radio_prefix0_set(0xAB);
    nrf_radio_base0_set(0xABABABAB);

The receiver: (BLEN = 4, BIG_ENDIAN) 

      NRF_RADIO->RXADDRESSES = 0x01UL;  

      nrf_radio_prefix0_set(0xAB);
      nrf_radio_base0_set(0xABABABAB);

It receives packets.

But If base0 on both Tx/Rx is changed into :

    nrf_radio_base0_set(0x6372E1BEU); 

Then no packets are received.

Is this because the base0 address is BAD / INVALID, or is this caused by something else? 

Thank you,

David Zhou

[Amanda Hsieh]

Hi, 

You need to change the address on both RX and TX sides. 

Since we cannot reproduce it, How do you test it? 

Regards,
Amanda

[TigerD]

Hi Amanda,

I have changed on both sides (Tx and Rx ) as I indicated in the above post:

    nrf_radio_base0_set(0x6372E1BEU);   //for both Tx and Rx

I am using  radio_test example code with nRF5_SDK_17.0.2_d674dde version for Rx and Tx.

In Tx:   NRF_RADIO->TXADDRESS   = 0x00UL; so Base0+Prefix0 is Tx-ed.

In Rx:  NRF_RADIO->RXADDRESSES = 0x01UL; so Base0+Prefix0 to be matched.

That's my understanding.

Edit:  I have tested again, It works. I might have made mistakes. But I will do more testings.

Edit 2: I have tested all options, they are good. Thank you, case closed.

Thank you for your support,

David Zhou

[Amanda Hsieh]

Good to know it works. 

-Amanda