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Direction_finding_Connectionless_rx

Hi all, i had some problems on showing IQ data. how can i output my IQ values? im using 52833dk. 

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  • Hi Zack_Lee

    As i can see, we're both working on the same example and having the same issues. Do you successfully receive packet from tx example ? Because i do, but not data are coming out. Here's below my output from rx example on nrf52833dk with antenna matrix from Nordic.

    *** Booting Zephyr OS build v2.6.0-rc1-ncs1-rc1  ***
    Starting Connectionless Locator Demo
    Bluetooth initialization...success
    Scan callbacks register...success.
    Periodic Advertising callbacks register...success.
    Start scanning...success
    Waiting for periodic advertising...
    [DEVICE]: 24:D4:13:1A:76:61 (random), AD evt type 5, Tx Pwr: 127, RSSI -43 DF Connectionless Beacon App C:0 S:0 D:0 SR:0 E:1 Prim: LE 1M, Secn: LE 2M, Interval: 0x0780 (2400 ms), SID: 0
    success. Found periodic advertising.
    Creating Periodic Advertising Sync...success.
    Waiting for periodic sync...
    [DEVICE]: 7F:D0:DA:D4:CB:A1 (random), AD evt type 0, Tx Pwr: 127, RSSI -68  C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255
    [DEVICE]: 7F:D0:DA:D4:CB:A1 (random), AD evt type 4, Tx Pwr: 127, RSSI -68  C:1 S:1 D:0 SR:1 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255
    PER_ADV_SYNC[0]: [DEVICE]: 24:D4:13:1A:76:61 (random) synced, Interval 0x0780 (2400 ms), PHY LE 2M
    success. Periodic sync established.
    Enable receiving of CTE...
    success. CTE receive enabled.
    Scan disable...Success.
    Waiting for periodic sync lost...
    PER_ADV_SYNC[0]: [DEVICE]: 24:D4:13:1A:76:61 (random), tx_power 127, RSSI -40, CTE AOA, data length 0, data: 
    CTE[0]: samples count 45, cte type AOA, slot durations: 2 [us], packet status CRC OK, RSSI -400
    PER_ADV_SYNC[0]: [DEVICE]: 24:D4:13:1A:76:61 (random), tx_power 127, RSSI -41, CTE AOA, data length 0, data: 
    CTE[0]: samples count 45, cte type AOA, slot durations: 2 [us], packet status CRC OK, RSSI -410
    PER_ADV_SYNC[0]: [DEVICE]: 24:D4:13:1A:76:61 (random), tx_power 127, RSSI -41, CTE AOA, data length 0, data: 
    CTE[0]: samples count 45, cte type AOA, slot durations: 2 [us], packet status CRC OK, RSSI -410
    PER_ADV_SYNC[0]: [DEVICE]: 24:D4:13:1A:76:61 (random), tx_power 127, RSSI -43, CTE AOA, data length 0, data: 
    CTE[0]: samples count 45, cte type AOA, slot durations: 2 [us], packet status CRC OK, RSSI -430
    PER_ADV_SYNC[0]: [DEVICE]: 24:D4:13:1A:76:61 (random), tx_power 127, RSSI -42, CTE AOA, data length 0, data: 
    CTE[0]: samples count 45, cte type AOA, slot durations: 2 [us], packet status CRC OK, RSSI -420

    The data length is 0 and i expect IQ data. Are you in this siutation Zack ?

    Sorry for the trouble-post, but i though it's similar to your case so an unique answer from Nordic dev could help both of us.

    Nathan

  • Hello Nathan, I'm a beginner of nrf5340, and recently I'm working on the direction finding sample. I used nrf5340dk without other antenna matrix, and here's my output:

    PER_ADV_SYNC[0]: [DEVICE]: 06:A2:07:3E:26:C0 (random), tx_power 127, RSSI -28, CTE AOA, data length 0, data: 
    CTE[59]: samples count 168, cte type Unknown, slot durations: 0 [us], packet status CRC OK, RSSI 0
    It's different with yours, and I don't know what's wrong. Maybe it's because I used PCB antenna only. Could you tell me the type/name of antenna matrix you used, and how to connect with a board? Thanks a lot.

    Best Regards.

Reply
  • Hello Nathan, I'm a beginner of nrf5340, and recently I'm working on the direction finding sample. I used nrf5340dk without other antenna matrix, and here's my output:

    PER_ADV_SYNC[0]: [DEVICE]: 06:A2:07:3E:26:C0 (random), tx_power 127, RSSI -28, CTE AOA, data length 0, data: 
    CTE[59]: samples count 168, cte type Unknown, slot durations: 0 [us], packet status CRC OK, RSSI 0
    It's different with yours, and I don't know what's wrong. Maybe it's because I used PCB antenna only. Could you tell me the type/name of antenna matrix you used, and how to connect with a board? Thanks a lot.

    Best Regards.

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