I have uploaded my project,
1832.direction_finding_connectionless.zip
This problem has been bothering me for a long time!And if possible, I really hope someone could download it to see where the problem is. Thank you in advance！I have listed some modifications I made to the SDK examples（D:\NCS\ncs2.5.0\v2.5.0\nrf\samples\bluetooth\direction_finding_connectionless_rx&tx） and the experimental results later.
hardware: nrf5340-dk
ncs:2.5.0
sample: direction_finding_connectionless_rx & direction_finding_connectionless_tx (AoD mode)
issue:
Creating Periodic Advertising Sync...ASSERTION FAIL [err == 0] @ WEST_TOPDIR/zephyr/subsys/bluetooth/host/hci_core.c:338 *** Booting nRF Connect SDK v2.5.0 ***with err -11
after debug, I find the code stall at hci_core.c 388:
err = k_sem_take(&sync_sem, HCI_CMD_TIMEOUT); BT_ASSERT_MSG(err == 0, "command opcode 0x%04x timeout with err %d", opcode, err);
I cannot run into create_sync() after the scan_enable() is runed even if I run the Rx sample along with the TX sample.
antenna
RF connector
I can not find CTE advertising package.
[DEVICE]: 76:E6:BA:B0:C6:17 (random), AD evt type 3, Tx Pwr: 127, RSSI -64 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255
but the interval always is 0. and SID always is 255.
I cannot find : success. Periodic sync established.So, never run to receive CTE.
I connected an external antenna matrix with 4 antennas at the TX end using an RF connector, I tried the connection example (Direction finding central/peripheral) and used the same configuration as direction_finding_connectionless_rx/tx，and according to Direction finding central/peripheral testing, the antenna signal was indeed successfully connected to the external antenna.It did connect successfully and received CTE data.But in direction_finding_connectionless_rx/tx example, using the same configuration failed.
direction_finding_connectionless_tx(AOD mode)：
Configuration:
Control panel output：
*** Booting nRF Connect SDK v2.5.0 *** Starting Connectionless Beacon Demo Bluetooth initialization...success Advertising set create...success Update CTE params...success Periodic advertising params set...success Enable CTE...success Periodic advertising enable...success Extended advertising enable...success Started extended advertising as DF:51:35:BB:2D:FC (random)
direction_finding_connectionless_rx：
Configuration:
Control panel output：
First time programming code：
*** Booting nRF Connect SDK v2.5.0 *** Starting Connectionless Locator Demo Bluetooth initialization...success Scan callbacks register...success. Periodic Advertising callbacks register...success. Start scanning...success Waiting for periodic advertising... [DEVICE]: 36:24:D7:AC:34:13 (random), AD evt type 3, Tx Pwr: 127, RSSI -96 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 70:BD:2C:AA:B9:D6 (random), AD evt type 0, Tx Pwr: 127, RSSI -90 C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 70:BD:2C:AA:B9:D6 (random), AD evt type 4, Tx Pwr: 127, RSSI -89 C:1 S:1 D:0 SR:1 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 12:86:E6:5C:F9:40 (random), AD evt type 3, Tx Pwr: 127, RSSI -61 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 69:1B:97:62:73:42 (random), AD evt type 0, Tx Pwr: 127, RSSI -89 C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 7F:13:80:1F:B5:29 (random), AD evt type 0, Tx Pwr: 127, RSSI -96 C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 29:5A:96:94:BD:E3 (random), AD evt type 3, Tx Pwr: 127, RSSI -93 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 5F:97:DC:DC:01:BE (random), AD evt type 3, Tx Pwr: 127, RSSI -94 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 38:E9:2C:46:09:43 (random), AD evt type 3, Tx Pwr: 127, RSSI -86 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 7D:85:8C:FE:F6:99 (random), AD evt type 2, Tx Pwr: 127, RSSI -76 C:0 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 7A:73:92:C1:D1:1C (random), AD evt type 2, Tx Pwr: 127, RSSI -80 C:0 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 33:A5:ED:97:96:BF (random), AD evt type 3, Tx Pwr: 127, RSSI -78 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255
Continuous second time programming code:
[DEVICE]: 7B:34:B4:83:65:85 (random), AD evt type 3, Tx Pwr: 127, RSSI -68 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 76:E6:BA:B0:C6:17 (random), AD evt type 3, Tx Pwr: 127, RSSI -64 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 success. Found periodic advertising. Creating Periodic Advertising Sync...ASSERTION FAIL [err == 0] @ WEST_TOPDIR/zephyr/subsys/bluetooth/host/hci_core.c:338 *** Booting nRF Connect SDK v2.5.0 ***with err -11 Starting Connectionless Locator Demo Bluetooth initialization...failed (err -11) success Scan callbacks register...success. Periodic Advertising callbacks register...success. Start scanning...failed (err -11) Waiting for periodic advertising... *** Booting nRF Connect SDK v2.5.0 *** Starting Connectionless Locator Demo Bluetooth initialization...success Scan callbacks register...success. Periodic Advertising callbacks register...success. Start scanning...success Waiting for periodic advertising... [DEVICE]: FC:02:F2:8B:8A:8E (public), AD evt type 0, Tx Pwr: 127, RSSI -89 FR8010_MI C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 75:26:60:D1:5E:74 (random), AD evt type 3, Tx Pwr: 127, RSSI -92 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 38:FC:98:8C:0F:B3 (public), AD evt type 0, Tx Pwr: 127, RSSI -93 C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 38:FC:98:8C:0F:B3 (public), AD evt type 4, Tx Pwr: 127, RSSI -92 C:1 S:1 D:0 SR:1 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 72:E9:B7:AD:B2:40 (random), AD evt type 0, Tx Pwr: 127, RSSI -75 C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 72:E9:B7:AD:B2:40 (random), AD evt type 4, Tx Pwr: 127, RSSI -75 C:1 S:1 D:0 SR:1 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255
When I modify the code（hci_core.c 388） ，err -11 disappeared, but synchronization was still not achieved and CTE data was not received：
(Change HCI_CMD_TIMEOUT to K_FOREVER;I did not modify this code in the project I uploaded；
hci_core.c 66: #define HCI_CMD_TIMEOUT K_SECONDS(10))
err = k_sem_take(&sync_sem, K_FOREVER);
BT_ASSERT_MSG(err == 0, "command opcode 0x%04x timeout with err %d", opcode, err);
First time programming code：
*** Booting nRF Connect SDK v2.5.0 *** Starting Connectionless Locator Demo Bluetooth initialization...success Scan callbacks register...success. Periodic Advertising callbacks register...success. Start scanning...success Waiting for periodic advertising... [DEVICE]: 0B:77:C4:66:D4:59 (random), AD evt type 3, Tx Pwr: 127, RSSI -88 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 18:96:1D:03:92:A7 (random), AD evt type 3, Tx Pwr: 127, RSSI -92 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 6A:6A:79:86:AA:30 (random), AD evt type 0, Tx Pwr: 127, RSSI -78 C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 32:73:62:FF:00:78 (random), AD evt type 3, Tx Pwr: 127, RSSI -97 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 30:0A:60:4B:94:22 (random), AD evt type 3, Tx Pwr: 127, RSSI -98 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255
Continuous second time programming code:
[DEVICE]: 7A:29:E0:CF:BD:C0 (random), AD evt type 0, Tx Pwr: 127, RSSI -73 C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 7A:29:E0:CF:BD:C0 (random), AD evt type 4, Tx Pwr: 127, RSSI -71 C:1 S:1 D:0 SR:1 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 success. Found periodic advertising. Creating Periodic Advertising Sync...*** Booting nRF Connect SDK v2.5.0 *** Starting Connectionless Locator Demo Bluetooth initialization...success Scan callbacks register...success. Periodic Advertising callbacks register...success. Start scanning...success Waiting for periodic advertising... [DEVICE]: 59:A5:67:B4:31:29 (random), AD evt type 2, Tx Pwr: 127, RSSI -82 C:0 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 7A:29:E0:CF:BD:C0 (random), AD evt type 0, Tx Pwr: 127, RSSI -70 C:1 S:1 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255 [DEVICE]: 7A:29:E0:CF:BD:C0 (random), AD evt type 4, Tx Pwr: 127, RSSI -70 C:1 S:1 D:0 SR:1 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255
Antenna matrix connection（TX AOD）：
Four GPIOs used to control antenna switching are connected to the external antenna matrix via DuPont cables.The antenna array is connected through RF connectors.
antenna RF connectorI don't know if it's a problem with my hardware configuration or software configuration.
