register setting problem on NRF52833!

RE: register setting problem on NRF52833!

Andreas — Mon, 30 Mar 2020 06:19:05 GMT

Hi,

As mentioned the Softdevice should not be enabled. In any case a little strange that only some registers are set, have you stepped through the code and verified whether the registers are just not set, or if they are not set but re-written later in the application?

Best regards,

Andreas

RE: register setting problem on NRF52833!

Armin_B — Thu, 26 Mar 2020 14:41:23 GMT

void radio_configure()
{
    // Radio config
    NRF_RADIO->TXPOWER   = (RADIO_TXPOWER_TXPOWER_Pos4dBm << RADIO_TXPOWER_TXPOWER_Pos);
    NRF_RADIO->FREQUENCY = 7UL;  // Frequency bin 2, 2402MHz
    NRF_RADIO->MODE      = (RADIO_MODE_MODE_Ble_1Mbit << RADIO_MODE_MODE_Pos);

    // Radio address config
    NRF_RADIO->PREFIX0 =
        ((uint32_t)swap_bits(0xC3) << 24) // Prefix byte of address 3 converted to nRF24L series format
      | ((uint32_t)swap_bits(0xC2) << 16) // Prefix byte of address 2 converted to nRF24L series format
      | ((uint32_t)swap_bits(0xC1) << 8)  // Prefix byte of address 1 converted to nRF24L series format
      | ((uint32_t)swap_bits(0xC0) << 0); // Prefix byte of address 0 converted to nRF24L series format

    NRF_RADIO->PREFIX1 =
        ((uint32_t)swap_bits(0xC7) << 24) // Prefix byte of address 7 converted to nRF24L series format
      | ((uint32_t)swap_bits(0xC6) << 16) // Prefix byte of address 6 converted to nRF24L series format
      | ((uint32_t)swap_bits(0xC4) << 0); // Prefix byte of address 4 converted to nRF24L series format

    NRF_RADIO->BASE0 = bytewise_bitswap(0x01234567UL);  // Base address for prefix 0 converted to nRF24L series format
    NRF_RADIO->BASE1 = bytewise_bitswap(0x89ABCDEFUL);  // Base address for prefix 1-7 converted to nRF24L series format

    NRF_RADIO->TXADDRESS   = 0x00UL;  // Set device address 0 to use when transmitting
    NRF_RADIO->RXADDRESSES = 0x01UL;  // Enable device address 0 to use to select which addresses to receive

    // Packet configuration
    NRF_RADIO->PCNF0 = (PACKET_S1_FIELD_SIZE     << RADIO_PCNF0_S1LEN_Pos) |
                       (PACKET_S0_FIELD_SIZE     << RADIO_PCNF0_S0LEN_Pos) |
                       (PACKET_LENGTH_FIELD_SIZE << RADIO_PCNF0_LFLEN_Pos); //lint !e845 "The right argument to operator '|' is certain to be 0"

    // Packet configuration
    NRF_RADIO->PCNF1 = (RADIO_PCNF1_WHITEEN_Disabled << RADIO_PCNF1_WHITEEN_Pos) |
                       (RADIO_PCNF1_ENDIAN_Big       << RADIO_PCNF1_ENDIAN_Pos)  |
                       (PACKET_BASE_ADDRESS_LENGTH   << RADIO_PCNF1_BALEN_Pos)   |
                       (PACKET_STATIC_LENGTH         << RADIO_PCNF1_STATLEN_Pos) |
                       (PACKET_PAYLOAD_MAXSIZE       << RADIO_PCNF1_MAXLEN_Pos); //lint !e845 "The right argument to operator '|' is certain to be 0"

    // CRC Config
    NRF_RADIO->CRCCNF = (RADIO_CRCCNF_LEN_Two << RADIO_CRCCNF_LEN_Pos); // Number of checksum bits
    if ((NRF_RADIO->CRCCNF & RADIO_CRCCNF_LEN_Msk) == (RADIO_CRCCNF_LEN_Two << RADIO_CRCCNF_LEN_Pos))
    {
        NRF_RADIO->CRCINIT = 0xFFFFUL;   // Initial value
        NRF_RADIO->CRCPOLY = 0x11021UL;  // CRC poly: x^16 + x^12^x^5 + 1
    }
    else if ((NRF_RADIO->CRCCNF & RADIO_CRCCNF_LEN_Msk) == (RADIO_CRCCNF_LEN_One << RADIO_CRCCNF_LEN_Pos))
    {
        NRF_RADIO->CRCINIT = 0xFFUL;   // Initial value
        NRF_RADIO->CRCPOLY = 0x107UL;  // CRC poly: x^8 + x^2^x^1 + 1
    }


        // ------------- DFE Config (Direction Finding Mode) --------------- //
    //@ tarnsmitter
    NRF_RADIO->DFEMODE = (RADIO_DFEMODE_DFEOPMODE_AoA << RADIO_DFEMODE_DFEOPMODE_Pos); // set DFEMODE as AOA
    
    /**
     * @brief configuring the radio in DFE mode with this settings:
     * CTEINLINECTRLEN = 1 >>>> inline configuration enabled
     * CTEINFOINS1 = NotInS1 >>>> CTEinfo settings for ADV PDU case 
    */

    NRF_RADIO->CTEINLINECONF = (RADIO_CTEINLINECONF_CTEINLINECTRLEN_Enabled  << RADIO_CTEINLINECONF_CTEINLINECTRLEN_Pos)|
                               (RADIO_CTEINLINECONF_CTEINFOINS1_NotInS1      << RADIO_CTEINLINECONF_CTEINFOINS1_Pos)|
                               (RADIO_CTEINLINECONF_CTEINLINERXMODE2US_125ns << RADIO_CTEINLINECONF_CTEINLINERXMODE2US_Pos); // set sample spacing equal to 125ns


    NRF_RADIO->DFECTRL1 = ((uint32_t)CTE_LENGTH_IN_8US             <<  RADIO_DFECTRL1_NUMBEROF8US_Pos)| // set CTE time length for TX
                          (RADIO_DFECTRL1_TSWITCHSPACING_4us       <<  RADIO_DFECTRL1_TSWITCHSPACING_Pos)|
                          (RADIO_DFECTRL1_TSAMPLESPACINGREF_125ns  <<  RADIO_DFECTRL1_TSAMPLESPACINGREF_Pos); //set switch time between atennas equal to 4us 
     

    NRF_RADIO->DFEPACKET.MAXCNT = (IQ_SAMP_BUFFER_SIZE << RADIO_DFEPACKET_MAXCNT_MAXCNT_Pos);

}

RE: register setting problem on NRF52833!

awneil — Thu, 26 Mar 2020 14:20:04 GMT

RE: register setting problem on NRF52833!

Armin_B — Thu, 26 Mar 2020 13:57:18 GMT

this is the function that set RADIO registers:

void radio_configure()
{
// Radio config
NRF_RADIO->TXPOWER = (RADIO_TXPOWER_TXPOWER_Pos4dBm << RADIO_TXPOWER_TXPOWER_Pos);
NRF_RADIO->FREQUENCY = 7UL; // Frequency bin 2, 2402MHz
NRF_RADIO->MODE = (RADIO_MODE_MODE_Ble_1Mbit << RADIO_MODE_MODE_Pos);

// Radio address config
NRF_RADIO->PREFIX0 =
((uint32_t)swap_bits(0xC3) << 24) // Prefix byte of address 3 converted to nRF24L series format
| ((uint32_t)swap_bits(0xC2) << 16) // Prefix byte of address 2 converted to nRF24L series format
| ((uint32_t)swap_bits(0xC1) << 8) // Prefix byte of address 1 converted to nRF24L series format
| ((uint32_t)swap_bits(0xC0) << 0); // Prefix byte of address 0 converted to nRF24L series format

NRF_RADIO->PREFIX1 =
((uint32_t)swap_bits(0xC7) << 24) // Prefix byte of address 7 converted to nRF24L series format
| ((uint32_t)swap_bits(0xC6) << 16) // Prefix byte of address 6 converted to nRF24L series format
| ((uint32_t)swap_bits(0xC4) << 0); // Prefix byte of address 4 converted to nRF24L series format

NRF_RADIO->BASE0 = bytewise_bitswap(0x01234567UL); // Base address for prefix 0 converted to nRF24L series format
NRF_RADIO->BASE1 = bytewise_bitswap(0x89ABCDEFUL); // Base address for prefix 1-7 converted to nRF24L series format

NRF_RADIO->TXADDRESS = 0x00UL; // Set device address 0 to use when transmitting
NRF_RADIO->RXADDRESSES = 0x01UL; // Enable device address 0 to use to select which addresses to receive

// Packet configuration
NRF_RADIO->PCNF0 = (PACKET_S1_FIELD_SIZE << RADIO_PCNF0_S1LEN_Pos) |
(PACKET_S0_FIELD_SIZE << RADIO_PCNF0_S0LEN_Pos) |
(PACKET_LENGTH_FIELD_SIZE << RADIO_PCNF0_LFLEN_Pos); //lint !e845 "The right argument to operator '|' is certain to be 0"

// Packet configuration
NRF_RADIO->PCNF1 = (RADIO_PCNF1_WHITEEN_Disabled << RADIO_PCNF1_WHITEEN_Pos) |
(RADIO_PCNF1_ENDIAN_Big << RADIO_PCNF1_ENDIAN_Pos) |
(PACKET_BASE_ADDRESS_LENGTH << RADIO_PCNF1_BALEN_Pos) |
(PACKET_STATIC_LENGTH << RADIO_PCNF1_STATLEN_Pos) |
(PACKET_PAYLOAD_MAXSIZE << RADIO_PCNF1_MAXLEN_Pos); //lint !e845 "The right argument to operator '|' is certain to be 0"

// CRC Config
NRF_RADIO->CRCCNF = (RADIO_CRCCNF_LEN_Two << RADIO_CRCCNF_LEN_Pos); // Number of checksum bits
if ((NRF_RADIO->CRCCNF & RADIO_CRCCNF_LEN_Msk) == (RADIO_CRCCNF_LEN_Two << RADIO_CRCCNF_LEN_Pos))
{
NRF_RADIO->CRCINIT = 0xFFFFUL; // Initial value
NRF_RADIO->CRCPOLY = 0x11021UL; // CRC poly: x^16 + x^12^x^5 + 1
}
else if ((NRF_RADIO->CRCCNF & RADIO_CRCCNF_LEN_Msk) == (RADIO_CRCCNF_LEN_One << RADIO_CRCCNF_LEN_Pos))
{
NRF_RADIO->CRCINIT = 0xFFUL; // Initial value
NRF_RADIO->CRCPOLY = 0x107UL; // CRC poly: x^8 + x^2^x^1 + 1
}

// ------------- DFE Config (Direction Finding Mode) --------------- //
//@ tarnsmitter
NRF_RADIO->DFEMODE = (RADIO_DFEMODE_DFEOPMODE_AoA << RADIO_DFEMODE_DFEOPMODE_Pos); // set DFEMODE as AOA

/**
* @brief configuring the radio in DFE mode with this settings:
* CTEINLINECTRLEN = 1 >>>> inline configuration enabled
* CTEINFOINS1 = NotInS1 >>>> CTEinfo settings for ADV PDU case
*/

NRF_RADIO->CTEINLINECONF = (RADIO_CTEINLINECONF_CTEINLINECTRLEN_Enabled << RADIO_CTEINLINECONF_CTEINLINECTRLEN_Pos)|
(RADIO_CTEINLINECONF_CTEINFOINS1_NotInS1 << RADIO_CTEINLINECONF_CTEINFOINS1_Pos)|
(RADIO_CTEINLINECONF_CTEINLINERXMODE2US_125ns << RADIO_CTEINLINECONF_CTEINLINERXMODE2US_Pos); // set sample spacing equal to 125ns

NRF_RADIO->DFECTRL1 = ((uint32_t)CTE_LENGTH_IN_8US << RADIO_DFECTRL1_NUMBEROF8US_Pos)| // set CTE time length for TX
(RADIO_DFECTRL1_TSWITCHSPACING_4us << RADIO_DFECTRL1_TSWITCHSPACING_Pos)|
(RADIO_DFECTRL1_TSAMPLESPACINGREF_125ns << RADIO_DFECTRL1_TSAMPLESPACINGREF_Pos); //set switch time between atennas equal to 4us

NRF_RADIO->DFEPACKET.MAXCNT = (IQ_SAMP_BUFFER_SIZE << RADIO_DFEPACKET_MAXCNT_MAXCNT_Pos);

}

RE: register setting problem on NRF52833!

awneil — Thu, 26 Mar 2020 13:07:04 GMT

Are you using a SoftDevice?

Note that the SoftDevice locks access to certain registers, so you cannot access them directly - you have to go via the appropriate API ...