コード例 #1
0
static int cflie_init()
{
    NRF24L01_Initialize();

    // CRC, radio on
    NRF24L01_SetTxRxMode(TX_EN);
    NRF24L01_WriteReg(NRF24L01_00_CONFIG, BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO) | BV(NRF24L01_00_PWR_UP)); 
    NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x01);              // Auto Acknowledgement for data pipe 0
    NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);          // Enable data pipe 0
    NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, TX_ADDR_SIZE-2); // 5-byte RX/TX address
    NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0x13);         // 3 retransmits, 500us delay

    NRF24L01_WriteReg(NRF24L01_05_RF_CH, rf_channel);        // Defined by model id
    NRF24L01_SetBitrate(data_rate);                          // Defined by model id

    NRF24L01_SetPower(Model.tx_power);
    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);             // Clear data ready, data sent, and retransmit

    NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, rx_tx_addr, TX_ADDR_SIZE);
    NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, rx_tx_addr, TX_ADDR_SIZE);

    // this sequence necessary for module from stock tx
    NRF24L01_ReadReg(NRF24L01_1D_FEATURE);
    NRF24L01_Activate(0x73);                          // Activate feature register
    NRF24L01_ReadReg(NRF24L01_1D_FEATURE);

    NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 0x01);       // Enable Dynamic Payload Length on pipe 0
    NRF24L01_WriteReg(NRF24L01_1D_FEATURE, 0x06);     // Enable Dynamic Payload Length, enable Payload with ACK
    // 50ms delay in callback
    return 50000;
}
コード例 #2
0
static uint16_t esky150_init()
{
    uint8_t rx_addr[ADDR_SIZE] = { 0x73, 0x73, 0x74, 0x63 };
    uint8_t tx_addr[ADDR_SIZE] = { 0x71, 0x0A, 0x31, 0xF4 };
    NRF24L01_Initialize();

    NRF24L01_WriteReg(NRF24L01_00_CONFIG, CRC_CONFIG); 
    NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);      // No Auto Acknoledgement
    NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);  // Enable data pipe 0
    NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, ADDR_SIZE-2);   // 4-byte RX/TX address
    NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0);    // Disable retransmit
    NRF24L01_SetPower(Model.tx_power);
    NRF24L01_SetBitrate(NRF24L01_BR_2M);
    NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, rx_addr, ADDR_SIZE);
    NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, tx_addr, ADDR_SIZE);


    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);     // Clear data ready, data sent, and retransmit
    NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, PAYLOADSIZE);   // bytes of data payload for pipe 0


    NRF24L01_Activate(0x73);
    NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 1); // Dynamic payload for data pipe 0
    // Enable: Dynamic Payload Length, Payload with ACK , W_TX_PAYLOAD_NOACK
    NRF24L01_WriteReg(NRF24L01_1D_FEATURE, BV(NRF2401_1D_EN_DPL) | BV(NRF2401_1D_EN_ACK_PAY) | BV(NRF2401_1D_EN_DYN_ACK));

    // Check for Beken BK2421/BK2423 chip
    // It is done by using Beken specific activate code, 0x53
    // and checking that status register changed appropriately
    // There is no harm to run it on nRF24L01 because following
    // closing activate command changes state back even if it
    // does something on nRF24L01
    NRF24L01_Activate(0x53); // magic for BK2421 bank switch
    printf("Trying to switch banks\n");
    if (NRF24L01_ReadReg(NRF24L01_07_STATUS) & 0x80) {
        printf("BK2421 detected\n");
//        long nul = 0;
        // Beken registers don't have such nice names, so we just mention
        // them by their numbers
        // It's all magic, eavesdropped from real transfer and not even from the
        // data sheet - it has slightly different values
        NRF24L01_WriteRegisterMulti(0x00, (uint8_t *) "\x40\x4B\x01\xE2", 4);
        NRF24L01_WriteRegisterMulti(0x01, (uint8_t *) "\xC0\x4B\x00\x00", 4);
        NRF24L01_WriteRegisterMulti(0x02, (uint8_t *) "\xD0\xFC\x8C\x02", 4);
        NRF24L01_WriteRegisterMulti(0x03, (uint8_t *) "\xF9\x00\x39\x21", 4);
        NRF24L01_WriteRegisterMulti(0x04, (uint8_t *) "\xC1\x96\x9A\x1B", 4);
        NRF24L01_WriteRegisterMulti(0x05, (uint8_t *) "\x24\x06\x7F\xA6", 4);
        NRF24L01_WriteRegisterMulti(0x0C, (uint8_t *) "\x00\x12\x73\x00", 4);
        NRF24L01_WriteRegisterMulti(0x0D, (uint8_t *) "\x46\xB4\x80\x00", 4);
        NRF24L01_WriteRegisterMulti(0x0E, (uint8_t *) "\x41\x10\x04\x82\x20\x08\x08\xF2\x7D\xEF\xFF", 11);
        NRF24L01_WriteRegisterMulti(0x04, (uint8_t *) "\xC7\x96\x9A\x1B", 4);
        NRF24L01_WriteRegisterMulti(0x04, (uint8_t *) "\xC1\x96\x9A\x1B", 4);
    } else {
        printf("nRF24L01 detected\n");
    }
    NRF24L01_Activate(0x53); // switch bank back

    // Delay 50 ms
    return 50000u;
}
コード例 #3
0
ファイル: esky_nrf24l01.c プロジェクト: DeviationTX/deviation
static void esky_init(u8 bind)
{
    NRF24L01_Initialize();

    // 2-bytes CRC, radio off
    NRF24L01_WriteReg(NRF24L01_00_CONFIG, BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO)); 
    NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);            // No Auto Acknoledgement
    NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);        // Enable data pipe 0
    if (bind) {
        set_bind_address();
    } else {
        set_data_address();
    }
    NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0);          // No auto retransmission
    NRF24L01_WriteReg(NRF24L01_05_RF_CH, 50);              // Channel 50 for bind packets
    NRF24L01_SetBitrate(0);                                // 1Mbps
    NRF24L01_SetPower(Model.tx_power);
    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);           // Clear data ready, data sent, and retransmit
//    NRF24L01_WriteReg(NRF24L01_08_OBSERVE_TX, 0x00);     // no write bits in this field
//    NRF24L01_WriteReg(NRF24L01_00_CD, 0x00);             // same
//    NRF24L01_WriteReg(NRF24L01_0C_RX_ADDR_P2, 0xC3);       // LSB byte of pipe 2 receive address
//    NRF24L01_WriteReg(NRF24L01_0D_RX_ADDR_P3, 0xC4);
//    NRF24L01_WriteReg(NRF24L01_0E_RX_ADDR_P4, 0xC5);
//    NRF24L01_WriteReg(NRF24L01_0F_RX_ADDR_P5, 0xC6);
    NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, PAYLOADSIZE);  // bytes of data payload for pipe 0
    NRF24L01_WriteReg(NRF24L01_12_RX_PW_P1, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_13_RX_PW_P2, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_14_RX_PW_P3, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_15_RX_PW_P4, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_16_RX_PW_P5, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_17_FIFO_STATUS, 0x00);      // Just in case, no real bits to write here
}
コード例 #4
0
ファイル: rx_v202.c プロジェクト: woogluf/bradwii
void initrx(void)
{
    NRF24L01_Initialize();

    reset_beken();

    // 2-bytes CRC, radio off
    uint8_t config = BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO) | BV(NRF24L01_00_PRIM_RX);

    NRF24L01_WriteReg(NRF24L01_00_CONFIG, config);
    NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);      // No Auto Acknoledgement
    NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);  // Enable data pipe 0
    NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, 0x03);   // 5-byte RX/TX address
    NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0xFF); // 4ms retransmit t/o, 15 tries
//    NRF24L01_WriteReg(NRF24L01_05_RF_CH, 0x08);      // Channel 8 - bind
    //NRF24L01_SetBitrate(NRF24L01_BR_1M);                          // 1Mbps
    NRF24L01_SetBitrate(NRF24L01_BR_250K); //250k for longer range.
    NRF24L01_SetPower(TXPOWER_100mW);
    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);     // Clear data ready, data sent, and retransmit
    NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, V2X2_PAYLOAD_SIZE);  // bytes of data payload for pipe 0
    NRF24L01_WriteReg(NRF24L01_17_FIFO_STATUS, 0x00); // Just in case, no real bits to write here
    uint8_t rx_tx_addr[] = {0x66, 0x88, 0x68, 0x68, 0x68};
//    uint8_t rx_p1_addr[] = {0x88, 0x66, 0x86, 0x86, 0x86};
    NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, rx_tx_addr, 5);
//    NRF24L01_WriteRegisterMulti(NRF24L01_0B_RX_ADDR_P1, rx_p1_addr, 5);
    NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, rx_tx_addr, 5);

    initialize_beken();

    lib_timers_delaymilliseconds(50);

    NRF24L01_FlushTx();
    NRF24L01_FlushRx();

    rf_ch_num = 0;

    // Turn radio power on
    config |= BV(NRF24L01_00_PWR_UP);
    NRF24L01_WriteReg(NRF24L01_00_CONFIG, config);
    // delayMicroseconds(150);
    lib_timers_delaymilliseconds(1); // 6 times more than needed

    valid_packets = missed_packets = bad_packets = 0;

    if (usersettings.boundprotocol == PROTO_NONE) {
        bind_phase = PHASE_NOT_BOUND;
        prepare_to_bind();
    } else {
        // Prepare to listen to bound protocol, if fails
        // try to bind
        bind_phase = PHASE_JUST_BOUND;
        set_bound();
    }
    switch_channel();
}
コード例 #5
0
ファイル: dm002_nrf24l01.c プロジェクト: F-D-R/deviation
static void DM002_init()
{
    NRF24L01_Initialize();
    NRF24L01_SetTxRxMode(TX_EN);
    XN297_SetTXAddr((uint8_t *)"\x26\xA8\x67\x35\xCC", DM002_ADDRESS_SIZE);

    NRF24L01_FlushTx();
    NRF24L01_FlushRx();
    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);     // Clear data ready, data sent, and retransmit
    NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);      // No Auto Acknowldgement on all data pipes
    NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);  // Enable data pipe 0 only
    NRF24L01_SetBitrate(NRF24L01_BR_1M);             // 1Mbps
    NRF24L01_SetPower(Model.tx_power);
    
    // Check for Beken BK2421/BK2423 chip
    // It is done by using Beken specific activate code, 0x53
    // and checking that status register changed appropriately
    // There is no harm to run it on nRF24L01 because following
    // closing activate command changes state back even if it
    // does something on nRF24L01
    NRF24L01_Activate(0x53); // magic for BK2421 bank switch
    dbgprintf("Trying to switch banks\n");
    if (NRF24L01_ReadReg(NRF24L01_07_STATUS) & 0x80) {
        dbgprintf("BK2421 detected\n");
        // Beken registers don't have such nice names, so we just mention
        // them by their numbers
        // It's all magic, eavesdropped from real transfer and not even from the
        // data sheet - it has slightly different values
        NRF24L01_WriteRegisterMulti(0x00, (u8 *) "\x40\x4B\x01\xE2", 4);
        NRF24L01_WriteRegisterMulti(0x01, (u8 *) "\xC0\x4B\x00\x00", 4);
        NRF24L01_WriteRegisterMulti(0x02, (u8 *) "\xD0\xFC\x8C\x02", 4);
        NRF24L01_WriteRegisterMulti(0x03, (u8 *) "\x99\x00\x39\x21", 4);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xD9\x96\x82\x1B", 4);
        NRF24L01_WriteRegisterMulti(0x05, (u8 *) "\x24\x06\x7F\xA6", 4);
        NRF24L01_WriteRegisterMulti(0x0C, (u8 *) "\x00\x12\x73\x00", 4);
        NRF24L01_WriteRegisterMulti(0x0D, (u8 *) "\x46\xB4\x80\x00", 4);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xDF\x96\x82\x1B", 4);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xD9\x96\x82\x1B", 4);
    } else {
        dbgprintf("nRF24L01 detected\n");
    }
    NRF24L01_Activate(0x53); // switch bank back
}
コード例 #6
0
u16 ASSAN_callback()
{
    switch (state)
    {
    // Bind
        case BIND0:
            //Config RX @1M
            NRF24L01_WriteReg(NRF24L01_05_RF_CH, RF_BIND_CHANNEL);
            NRF24L01_SetBitrate(NRF24L01_BR_1M);                    // 1Mbps
            NRF24L01_SetTxRxMode(RX_EN);
            state = BIND1;
            /* FALLTHROUGH */
        case BIND1:
            //Wait for receiver to send the frames
            if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & BV(NRF24L01_07_RX_DR))
            { //Something has been received
                NRF24L01_ReadPayload(packet, PACKET_SIZE);
                if(packet[19]==0x13)
                { //Last frame received
                    state = BIND2 | WAIT;
                    //Switch to TX
                    NRF24L01_SetTxRxMode(TXRX_OFF);
                    NRF24L01_SetTxRxMode(TX_EN);
                    //Prepare bind packet
                    memset(packet,0x05,PACKET_SIZE-5);
                    packet[15]=0x99;
                    for(u8 i=0;i<4;i++)
                        packet[16+i]=packet[23-i];
                    packet_count=0;
                    return 10000;
                }
            }
            return 1000;
        case BIND2|WAIT:
            if(++packet_count == 27) // Wait 270ms in total...
            {
                packet_count = 0;
                state &= ~WAIT;
            }
            return 10000;
        case BIND2:
            // Send 20 packets
            packet_count++;
            if(packet_count==20)
                packet[15]=0x13;    // different value for last packet
            NRF24L01_WritePayload(packet, PACKET_SIZE);
            if(packet_count==20)
            {
                state = DATA0 | WAIT;
                packet_count = 0;
            }
            return 22520;
        case DATA0|WAIT:
            if(++packet_count == 217)
                state &= ~WAIT;
            return 10000;
    // Normal operation
        case DATA0:
            // Bind Done
            PROTOCOL_SetBindState(0);
            NRF24L01_SetBitrate(NRF24L01_BR_250K);                  // 250Kbps
            NRF24L01_SetTxRxMode(TXRX_OFF);
            NRF24L01_SetTxRxMode(TX_EN);
            /* FALLTHROUGH */
        case DATA1:
        case DATA4:
            // Change ID and RF channel
            NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, packet+20+4*hopping_frequency_no, ADDRESS_LENGTH);
            NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[hopping_frequency_no]);
            hopping_frequency_no^=0x01;
            state=DATA2;
            return 2000;
        case DATA2:
        case DATA3:
            send_packet();
            state++;    // DATA 3 or 4
            return 5000;
    }
    return 0;
}
コード例 #7
0
ファイル: cflie_nrf24l01.c プロジェクト: phantom-8/deviation
static int cflie_init()
{
    NRF24L01_Initialize();

    // CRC, radio on
    NRF24L01_SetTxRxMode(TX_EN);
    NRF24L01_WriteReg(NRF24L01_00_CONFIG, BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO) | BV(NRF24L01_00_PWR_UP)); 
    NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x01);              // Auto Acknowledgement for data pipe 0
    NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);          // Enable data pipe 0
    NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, TX_ADDR_SIZE-2); // 5-byte RX/TX address
    NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0x13);         // 3 retransmits, 500us delay

    NRF24L01_WriteReg(NRF24L01_05_RF_CH, rf_channel);        // Defined by model id
    NRF24L01_SetBitrate(data_rate);                          // Defined by model id

    NRF24L01_SetPower(Model.tx_power);
    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);             // Clear data ready, data sent, and retransmit

    NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, rx_tx_addr, TX_ADDR_SIZE);
    NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, rx_tx_addr, TX_ADDR_SIZE);

    // this sequence necessary for module from stock tx
    NRF24L01_ReadReg(NRF24L01_1D_FEATURE);
    NRF24L01_Activate(0x73);                          // Activate feature register
    NRF24L01_ReadReg(NRF24L01_1D_FEATURE);

    NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 0x01);       // Enable Dynamic Payload Length on pipe 0
    NRF24L01_WriteReg(NRF24L01_1D_FEATURE, 0x06);     // Enable Dynamic Payload Length, enable Payload with ACK

    // Check for Beken BK2421/BK2423 chip
    // It is done by using Beken specific activate code, 0x53
    // and checking that status register changed appropriately
    // There is no harm to run it on nRF24L01 because following
    // closing activate command changes state back even if it
    // does something on nRF24L01
    NRF24L01_Activate(0x53); // magic for BK2421 bank switch
    dbgprintf("Trying to switch banks\n");
    if (NRF24L01_ReadReg(NRF24L01_07_STATUS) & 0x80) {
        dbgprintf("BK2421 detected\n");
        long nul = 0;
        // Beken registers don't have such nice names, so we just mention
        // them by their numbers
        // It's all magic, eavesdropped from real transfer and not even from the
        // data sheet - it has slightly different values
        NRF24L01_WriteRegisterMulti(0x00, (u8 *) "\x40\x4B\x01\xE2", 4);
        NRF24L01_WriteRegisterMulti(0x01, (u8 *) "\xC0\x4B\x00\x00", 4);
        NRF24L01_WriteRegisterMulti(0x02, (u8 *) "\xD0\xFC\x8C\x02", 4);
        NRF24L01_WriteRegisterMulti(0x03, (u8 *) "\xF9\x00\x39\x21", 4);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC1\x96\x9A\x1B", 4);
        NRF24L01_WriteRegisterMulti(0x05, (u8 *) "\x24\x06\x7F\xA6", 4);
        NRF24L01_WriteRegisterMulti(0x06, (u8 *) &nul, 4);
        NRF24L01_WriteRegisterMulti(0x07, (u8 *) &nul, 4);
        NRF24L01_WriteRegisterMulti(0x08, (u8 *) &nul, 4);
        NRF24L01_WriteRegisterMulti(0x09, (u8 *) &nul, 4);
        NRF24L01_WriteRegisterMulti(0x0A, (u8 *) &nul, 4);
        NRF24L01_WriteRegisterMulti(0x0B, (u8 *) &nul, 4);
        NRF24L01_WriteRegisterMulti(0x0C, (u8 *) "\x00\x12\x73\x00", 4);
        NRF24L01_WriteRegisterMulti(0x0D, (u8 *) "\x46\xB4\x80\x00", 4);
        NRF24L01_WriteRegisterMulti(0x0E, (u8 *) "\x41\x10\x04\x82\x20\x08\x08\xF2\x7D\xEF\xFF", 11);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC7\x96\x9A\x1B", 4);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC1\x96\x9A\x1B", 4);
    } else {
        dbgprintf("nRF24L01 detected\n");
    }
    NRF24L01_Activate(0x53); // switch bank back

    // 50ms delay in callback
    return 50000;
}
コード例 #8
0
ファイル: cflie_nrf24l01.c プロジェクト: phantom-8/deviation
static void set_rate_channel(u8 rate, u8 channel)
{
    NRF24L01_WriteReg(NRF24L01_05_RF_CH, channel);     // Defined by model id
    NRF24L01_SetBitrate(rate);             // Defined by model id
}
コード例 #9
0
ファイル: esky_nrf24l01.c プロジェクト: Chen-Leon/DeviationX
static void esky_init(u8 bind)
{
    NRF24L01_Initialize();

    // 2-bytes CRC, radio off
    NRF24L01_WriteReg(NRF24L01_00_CONFIG, BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO)); 
    NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);            // No Auto Acknoledgement
    NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);        // Enable data pipe 0
    if (bind) {
        set_bind_address();
    } else {
        set_data_address();
    }
    NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0);          // No auto retransmission
    NRF24L01_WriteReg(NRF24L01_05_RF_CH, 50);              // Channel 50 for bind packets
    NRF24L01_SetBitrate(0);                                // 1Mbps
    NRF24L01_SetPower(Model.tx_power);
    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);           // Clear data ready, data sent, and retransmit
//    NRF24L01_WriteReg(NRF24L01_08_OBSERVE_TX, 0x00);     // no write bits in this field
//    NRF24L01_WriteReg(NRF24L01_00_CD, 0x00);             // same
//    NRF24L01_WriteReg(NRF24L01_0C_RX_ADDR_P2, 0xC3);       // LSB byte of pipe 2 receive address
//    NRF24L01_WriteReg(NRF24L01_0D_RX_ADDR_P3, 0xC4);
//    NRF24L01_WriteReg(NRF24L01_0E_RX_ADDR_P4, 0xC5);
//    NRF24L01_WriteReg(NRF24L01_0F_RX_ADDR_P5, 0xC6);
    NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, PAYLOADSIZE);  // bytes of data payload for pipe 0
    NRF24L01_WriteReg(NRF24L01_12_RX_PW_P1, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_13_RX_PW_P2, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_14_RX_PW_P3, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_15_RX_PW_P4, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_16_RX_PW_P5, PAYLOADSIZE);
    NRF24L01_WriteReg(NRF24L01_17_FIFO_STATUS, 0x00);      // Just in case, no real bits to write here

    // Check for Beken BK2421/BK2423 chip
    // It is done by using Beken specific activate code, 0x53
    // and checking that status register changed appropriately
    // There is no harm to run it on nRF24L01 because following
    // closing activate command changes state back even if it
    // does something on nRF24L01
    NRF24L01_Activate(0x53); // magic for BK2421 bank switch
    printf("Trying to switch banks\n");
    if (NRF24L01_ReadReg(NRF24L01_07_STATUS) & 0x80) {
        printf("BK2421 detected\n");
        // Beken registers don't have such nice names, so we just mention
        // them by their numbers
        // It's all magic, eavesdropped from real transfer and not even from the
        // data sheet - it has slightly different values
        NRF24L01_WriteRegisterMulti(0x00, (u8 *) "\x40\x4B\x01\xE2", 4);
        NRF24L01_WriteRegisterMulti(0x01, (u8 *) "\xC0\x4B\x00\x00", 4);
        NRF24L01_WriteRegisterMulti(0x02, (u8 *) "\xD0\xFC\x8C\x02", 4);
        NRF24L01_WriteRegisterMulti(0x03, (u8 *) "\xF9\x00\x39\x21", 4);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC1\x96\x9A\x1B", 4);
        NRF24L01_WriteRegisterMulti(0x05, (u8 *) "\x24\x06\x7F\xA6", 4);
        NRF24L01_WriteRegisterMulti(0x0C, (u8 *) "\x00\x12\x73\x00", 4);
        NRF24L01_WriteRegisterMulti(0x0D, (u8 *) "\x46\xB4\x80\x00", 4);
        NRF24L01_WriteRegisterMulti(0x0E, (u8 *) "\x41\x10\x04\x82\x20\x08\x08\xF2\x7D\xEF\xFF", 11);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC7\x96\x9A\x1B", 4);
        NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC1\x96\x9A\x1B", 4);
    } else {
        printf("nRF24L01 detected\n");
    }
    NRF24L01_Activate(0x53); // switch bank back

    // Implicit delay in callback
    // delay(50);
}