Hello,
I'm using a nRF52 DK to test BLE communication with another microcontroller. What I need to test is the nRF52 pairing with another brand microcontroller, send a data stream and close the connection.
Could you please tell me which example from the Bluetooth samples list I can use for starting?
Thanks for your attention.
Regards,
The Bluetooth: Central / Heart-rate Monitor sample should be a good start.
Hello haakonsh,
Thank you very much. I've reviewed this example and it is supposed to connect with the first device with an strong signal. Is there a way to force the board to connect with the device with a given MAC address?
The NUS client is implemented in the SDK tree, so the changes you made were not included in the project you shared.
But are the changes included in the project in my computer?
Below the log I got:
*** Booting Zephyr OS build v3.2.99-ncs2 ***
bt_conn_auth_cb_register
bt_conn_auth_info_cb_register err: 0
bt_enable err: 0
Bluetooth initialized
uart_init
scan_init
Address filter added 60:55:F9:F5:29:D2 (public)
Scan module initialized
bt_nus_client_init
NUS Client module initialized
Starting Bluetooth Central UART example
scan err: 0
Scanning
Scanning successfully started
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:00.017,456] <inf> fs_nvs: nvs_mount: 6 Sectors of 4096 bytes
[00:00:00.017,486] <inf> fs_nvs: nvs_mount: alloc wra: 0, fe8
[00:00:00.017,517] <inf> fs_nvs: nvs_mount: data wra: 0, 0
[00:00:00.017,669] <inf> bt_sdc_hci_driver: hci_driver_open: SoftDevice Controller build revision:
d8 0c 2d 2f 36 ae e2 5c 80 26 80 4c 3f 4d 16 53 |..-/6..\ .&.L?M.S
50 96 c7 73 |P..s
[00:00:00.021,026] <inf> bt_hci_core: hci_vs_init: HW Platform: Nordic Semiconductor (0x0002)
[00:00:00.021,057] <inf> bt_hci_core: hci_vs_init: HW Variant: nRF52x (0x0002)
[00:00:00.021,087] <inf> bt_hci_core: hci_vs_init: Firmware: Standard Bluetooth controller (0x00) Version 216.11532 Build 3803067951
[00:00:00.021,667] <inf> bt_hci_core: bt_init: No ID address. App must call settings_load()
[00:00:00.025,177] <inf> central_uart: main: Bluetooth initialized
[00:00:00.025,817] <inf> bt_hci_core: bt_dev_show_info: Identity: D7:C8:04connected conn_err: 0
Connected: 60:55:F9:F5:29:D2 (public)
:2D:97:BA (random)
[00:00:00.025,848] <inf> bt_hci_core: bt_dev_show_info: HCI: version 5.3 (0x0c) revision 0x124b, manufacturer 0x0059
[00:00:00.025,909] <inf> bt_hci_core: bt_dev_show_info: LMP: version 5.3 (0x0c) subver 0x124b
[00:00:00.034,240] <inf> central_uart: scan_init: Scan module initialized
[00:00:00.039,733] <inf> central_uart: nus_client_init: NUS Client module initialized
[00:00:00.052,795] <inf> central_uart: main: Scanning successfully started
[00:00:00.058,654] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:00.064,880] <wrn> central_uart: main: NUS send timeout
[00:00:00.117,584] <inf> central_uart: scan_filter_match: Filters matched. Address: 60:55:F9:F5:29:D2 (public) connectable: 1
[00:00:00.120,239] <inf> central_uart: scan_filter_match: Filters matched. Address: 60:55:F9:F5:29:D2 (public) connectable: 0
[00:00:00.120,269] <wrn> central_uart: scan_connecting_error: Connecting failed
[00:00:00.287,994] <inf> central_uart: connected: Connected: 60:55:F9:F5:29:D2 (public)
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:00.586,059] <inf> central_uart: exchange_func: MTU exchange done
[00:00:01.069,122] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:01.075,317] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:02.079,681] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:00:02.086,212] <wrn> central_uart: main: NUS send timeout
[00:00:03.090,545] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:03.096,740] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:04.101,104] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:04.107,330] <wrn> central_uart: main: NUS send timeout
[00:00:05.111,602] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:05.117,797] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:06.122,100] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:06.128,326] <wrn> central_uart: main: NUS send timeout
[00:00:07.132,598] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:07.139,129] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:08.143,524] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:08.149,719] <wrn> central_uart: main: NUS send timeout
[00:00:09.153,961] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:09.160,156] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:10.164,459] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:10.170,654] <wrn> central_uart: main: NUS send timeout
[00:00:11.174,957] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:11.181,182] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:12.185,821] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:12.191,925] <wrn> central_uart: main: NUS send timeout
[00:00:13.196,258] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:13.202,484] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:14.206,756] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:14.212,951] <wrn> central_uart: main: NUS send timeout
[00:00:15.217,193] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:15.223,388] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:16.227,722] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:16.233,947] <wrn> central_uart: main: NUS send timeout
[00:00:17.238,372] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:17.244,598] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:18.248,870] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:18.255,065] <wrn> central_uart: main: NUS send timeout
[00:00:19.259,307] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:19.265,533] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:20.269,866] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:20.276,092] <wrn> central_uart: main: NUS send timeout
[00:00:21.280,303] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:21.286,743] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:22.291,107] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:22.297,302] <wrn> central_uart: main: NUS send timeout
[00:00:23.301,696] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:23.307,891] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:24.312,286] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:24.318,481] <wrn> central_uart: main: NUS send timeout
[00:00:25.322,784] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:25.329,010] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:26.333,343] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:26.339,843] <wrn> central_uart: main: NUS send timeout
[00:00:27.344,207] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:27.350,433] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:28.354,766] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:28.360,992] <wrn> central_uart: main: NUS send timeout
[00:00:29.365,264] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:29.371,490] <wrn> central_uart: main: NUS send timeout
Pairing failed conn: 60:55:F9:F5:29:D2 (public), reason 9
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
Service discovery completed
ATT[1]: UUID: 0x2803 Handle: 0x0029 Value:
Characteristic: 0xff01 Properties: 0x0008
ATT[2]: UUID: 0xff01 Handle: 0x002A Value:
ATT[3]: UUID: 0x2803 Handle: 0x002B Value:
Characteristic: 0xff02 Properties: 0x0012
ATT[4]: UUID: 0xff02 Handle: 0x002C Value:
ATT[5]: UUID: 0x2902 Handle: 0x002D Value:
CCCD
[00:00:30.293,670] <err> bt_smp: smp_timeout: SMP Timeout
[00:00:30.294,281] <wrn> central_uart: security_changed: Security failed: 60:55:F9:F5:29:D2 (public) level 1 err 9
[00:00:30.294,677] <wrn> central_uart: pairing_failed: Pairing failed conn: 60:55:F9:F5:29:D2 (public), reason 9
[00:00:30.375,762] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:30.381,958] <wrn> central_uart: main: NUS send timeout
[00:00:30.936,035] <inf> central_uart: discovery_complete: Service discovery completed
[00:00:30.978,515] <err> nus_c: bt_nus_handles_assign: Missing NUS TX CCC in characteristic.
[00:00:31.436,035] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:32.436,065] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:33.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:34.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:35.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:36.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:37.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:38.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:39.536,010] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:40.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:41.536,071] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:42.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:43.586,029] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:44.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:45.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:46.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:47.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:48.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:49.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:50.536,010] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:51.486,022] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
[00:00:52.585,998] <wrn> central_uart: ble_data_sent: ATT error code: 0x01
Now I can see the pairing is failing due to a timeout. It is probably blocked by the service discovery.
The ESP32 uses 16-bit services not 128-bit vendor specific services as NUS does. This means you need to change the UUID declarations from 128-bits to 16-bits uuids with BT_UUID_DECLARE_16().
But are the changes included in the project in my computer?
Yes, in your local NCS copy.
This means you need to change the UUID declarations from 128-bits to 16-bits uuids with BT_UUID_DECLARE_16().
I have just made this change and now I have errors like this in many lines:
error: macro "BT_UUID_INIT_16" passed 2 arguments, but takes just 1 161 | gatt_desc = bt_gatt_dm_desc_by_uuid(dm, gatt_chrc, BT_UUID_NUS_RX);
Do I have to replace functions?
I solve this problem by replacing:
/** @brief UUID of the NUS Service. **/ #define BT_UUID_NUS_VAL \ BT_UUID_16_ENCODE(0xFFFF) /** @brief UUID of the TX Characteristic. **/ #define BT_UUID_NUS_TX_VAL \ BT_UUID_16_ENCODE(0xFF01) /** @brief UUID of the RX Characteristic. **/ #define BT_UUID_NUS_RX_VAL \ BT_UUID_16_ENCODE(0xFF02)
by:
/** @brief UUID of the NUS Service. **/ #define BT_UUID_NUS_VAL \ (BT_UUID_16_ENCODE(0xFFFF)) /** @brief UUID of the TX Characteristic. **/ #define BT_UUID_NUS_TX_VAL \ (BT_UUID_16_ENCODE(0xFF01)) /** @brief UUID of the RX Characteristic. **/ #define BT_UUID_NUS_RX_VAL \ (BT_UUID_16_ENCODE(0xFF02))
After having flashed the nRF52 the data is not sent yet and I don't see anymore the UUID in the log (the discovery service is not found). Below the log output:
*** Booting Zephyr OS build v3.2.99-ncs2 ***
bt_conn_auth_cb_register
bt_conn_auth_info_cb_register err: 0
bt_enable err: 0
Bluetooth initialized
uart_init
scan_init
Address filter added 60:55:F9:F5:29:D2 (public)
Scan module initialized
bt_nus_client_init
NUS Client module initialized
Starting Bluetooth Central UART example
scan err: 0
Scanning
Scanning successfully started
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:00.017,303] <inf> fs_nvs: nvs_mount: 6 Sectors of 4096 bytes
[00:00:00.017,333] <inf> fs_nvs: nvs_mount: alloc wra: 0, fe8
[00:00:00.017,364] <inf> fs_nvs: nvs_mount: data wra: 0, 0
[00:00:00.017,486] <inf> bt_sdc_hci_driver: hci_driver_open: SoftDevice Controller build revision:
d8 0c 2d 2f 36 ae e2 5c 80 26 80 4c 3f 4d 16 53 |..-/6..\ .&.L?M.S
50 96 c7 73 |P..s
[00:00:00.020,843] <inf> bt_hci_core: hci_vs_init: HW Platform: Nordic Semiconductor (0x0002)
[00:00:00.020,874] <inf> bt_hci_core: hci_vs_init: HW Variant: nRF52x (0x0002)
[00:00:00.020,904] <inf> bt_hci_core: hci_vs_init: Firmware: Standard Bluetooth controller (0x00) Version 216.11532 Build 3803067951
[00:00:00.021,453] <inf> connected conn_err: 0
Connected: 60:55:F9:F5:29:D2 (public)
bt_hci_core: bt_init: No ID address. App must call settings_load()
[00:00:00.024,963] <inf> central_uart: main: Bluetooth initialized
[00:00:00.025,604] <inf> bt_hci_core: bt_dev_show_info: Identity: D7:C8:04:2D:97:BA (random)
[00:00:00.025,634] <inf> bt_hci_core: bt_dev_show_info: HCI: version 5.3 (0x0c) revision 0x124b, manufacturer 0x0059
[00:00:00.025,695] <inf> bt_hci_core: bt_dev_show_info: LMP: version 5.3 (0x0c) subver 0x124b
[00:00:00.034,118] <inf> central_uart: scan_init: Scan module initialized
[00:00:00.039,611] <inf> central_uart: nus_client_init: NUS Client module initialized
[00:00:00.052,642] <inf> central_uart: main: Scanning successfully started
[00:00:00.058,929] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:00.065,124] <wrn> central_uart: main: NUS send timeout
[00:00:00.069,824] <inf> central_uart: scan_filter_match: Filters matched. Address: 60:55:F9:F5:29:D2 (public) connectable: 1
[00:00:00.072,082] <inf> central_uart: scan_filter_match: Filters matched. Address: 60:55:F9:F5:29:D2 (public) connectable: 0
[00:00:00.072,113] <wrn> central_uart: scan_connecting_error: Connecting failed
[00:00:00.241,516] <inf> central_uart: connected: Connected: 60:55:F9:F5:29:D2 (public)
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:00.539,489] <inf> central_uart: exchange_func: MTU exchange done
[00:00:01.069,519] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:01.075,714] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:02.080,017] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:00:02.086,242] <wrn> central_uart: main: NUS send timeout
[00:00:03.090,759] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:03.096,954] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:04.101,257] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:04.107,482] <wrn> central_uart: main: NUS send timeout
[00:00:05.111,785] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:05.118,011] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:06.122,375] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:06.128,601] <wrn> central_uart: main: NUS send timeout
[00:00:07.132,904] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:07.139,221] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:08.143,402] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:08.149,627] <wrn> central_uart: main: NUS send timeout
[00:00:09.153,900] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:09.160,125] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:10.164,520] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:10.170,745] <wrn> central_uart: main: NUS send timeout
[00:00:11.175,048] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:11.181,274] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:12.185,638] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:12.192,108] <wrn> central_uart: main: NUS send timeout
[00:00:13.196,350] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:13.202,575] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:14.206,970] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:14.213,195] <wrn> central_uart: main: NUS send timeout
[00:00:15.217,468] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:15.223,693] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:16.227,996] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:16.234,222] <wrn> central_uart: main: NUS send timeout
[00:00:17.238,525] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:17.244,995] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:18.249,267] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:18.255,462] <wrn> central_uart: main: NUS send timeout
[00:00:19.259,704] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:19.265,899] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:20.270,263] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:20.276,489] <wrn> central_uart: main: NUS send timeout
[00:00:21.280,670] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:21.286,895] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:22.291,442] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:22.297,668] <wrn> central_uart: main: NUS send timeout
[00:00:23.301,940] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:23.308,166] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:24.312,408] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:24.318,634] <wrn> central_uart: main: NUS send timeout
[00:00:25.322,967] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:25.329,193] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:26.333,435] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:00:26.339,965] <wrn> central_uart: main: NUS send timeout
[00:00:27.344,238] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:27.350,433] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:28.354,766] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:28.361,022] <wrn> central_uart: main: NUS send timeout
[00:00:29.365,295] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:29.371,551] <wrn> central_uart: main: NUS send timeout
Pairing failed conn: 60:55:F9:F5:29:D2 (public), reason 9
Service not found
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:30.247,192] <err> bt_smp: smp_timeout: SMP Timeout
[00:00:30.247,802] <wrn> central_uart: security_changed: Security failed: 60:55:F9:F5:29:D2 (public) level 1 err 9
[00:00:30.248,168] <wrn> central_uart: pairing_failed: Pairing failed conn: 60:55:F9:F5:29:D2 (public), reason 9
[00:00:30.339,447] <inf> central_uart: discovery_service_not_found: Service not found
[00:00:30.375,793] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:30.382,019] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:31.386,260] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:31.392,517] <wrn> central_uart: main: NUS send timeout
[00:00:32.396,789] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:32.403,015] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:33.407,287] <wrn> central_uart: main: Failed to sendreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
data over BLE connection(err -128)
[00:00:33.413,513] <wrn> central_uart: main: NUS send timeout
[00:00:34.417,907] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:34.424,102] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:35.428,405] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:00:35.434,631] <wrn> central_uart: main: NUS send timeout
[00:00:36.439,147] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:36.445,251] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:37.449,523] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:37.455,749] <wrn> central_uart: main: NUS send timeout
[00:00:38.460,052] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:38.466,247] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:39.470,550] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:39.476,745] <wrn> central_uart: main: NUS send timeout
[00:00:40.481,018] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:40.487,243] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
Which could be the problem?
Hello Vidar Berg,
Do you have any hint to solve this issue? Thanks for your attention.
Hello,
Do you have a link to where the BT service on the ESP is documented?
Hello,
Yes. It is documented here.
Hello,
It's difficult to troubleshoot this without having the ESP to test against. But it looks like it worked better before you made the changes I suggested. Can you revert back to when the discovery worked? Then swap the TX and RX UUID (BT_UUID_NUS_TX_VAL & BT_UUID_NUS_RX_VAL) and see if that improves anything. Doing this should fix the warning you got here:
[00:00:30.978,515] <err> nus_c: bt_nus_handles_assign: Missing NUS TX CCC in characteristic
Hello,
I've rolled-back to the previous version and I don't have the warning you've mentioned. Nevertheless, the discovery service is not found:
*** Booting Zephyr OS build v3.2.99-ncs2 ***
bt_conn_auth_cb_register
bt_conn_auth_info_cb_register err: 0
bt_enable err: 0
Bluetooth initialized
uart_init
scan_init
Address filter added 60:55:F9:F5:29:D2 (public)
Scan module initialized
bt_nus_client_init
NUS Client module initialized
Starting Bluetooth Central UART example
scan err: 0
Scanning
Scanning successfully started
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:00.017,425] <inf> fs_nvs: nvs_mount: 6 Sectors of 4096 bytes
[00:00:00.017,456] <inf> fs_nvs: nvs_mount: alloc wra: 0, fe8
[00:00:00.017,486] <inf> fs_nvs: nvs_mount: data wra: 0, 0
[00:00:00.017,639] <inf> bt_sdc_hci_driver: hci_driver_open: SoftDevice Controller build revision:
d8 0c 2d 2f 36 ae e2 5c 80 26 80 4c 3f 4d 16 53 |..-/6..\ .&.L?M.S
50 96 c7 73 |P..s
[00:00:00.020,965] <inf> bt_hci_core: hci_vs_init: HW Platform: Nordic Semiconductor (0x0002)
[00:00:00.021,026] <inf> bt_hci_core: hci_vs_init: HW Variant: nRF52x (0x0002)
[00:00:00.021,057] <inf> connected conn_err: 0
Connected: 60:55:F9:F5:29:D2 (public)
bt_hci_core: hci_vs_init: Firmware: Standard Bluetooth controller (0x00) Version 216.11532 Build 3803067951
[00:00:00.021,606] <inf> bt_hci_core: bt_init: No ID address. App must call settings_load()
[00:00:00.025,115] <inf> central_uart: main: Bluetooth initialized
[00:00:00.025,756] <inf> bt_hci_core: bt_dev_show_info: Identity: D7:C8:04:2D:97:BA (random)
[00:00:00.025,787] <inf> bt_hci_core: bt_dev_show_info: HCI: version 5.3 (0x0c) revision 0x124b, manufacturer 0x0059
[00:00:00.025,848] <inf> bt_hci_core: bt_dev_show_info: LMP: version 5.3 (0x0c) subver 0x124b
[00:00:00.034,179] <inf> central_uart: scan_init: Scan module initialized
[00:00:00.039,672] <inf> central_uart: nus_client_init: NUS Client module initialized
[00:00:00.052,734] <inf> central_uart: main: Scanning successfully started
[00:00:00.057,098] <inf> central_uart: scan_filter_match: Filters matched. Address: 60:55:F9:F5:29:D2 (public) connectable: 1
[00:00:00.059,356] <inf> central_uart: scan_filter_match: Filters matched. Address: 60:55:F9:F5:29:D2 (public) connectable: 0
[00:00:00.059,387] <wrn> central_uart: scan_connecting_error: Connecting failed
[00:00:00.062,316] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:00.068,603] <wrn> central_uart: main: NUS send timeout
[00:00:00.223,999] <inf> central_uart: connected: Connected: 60:55:F9:F5:29:D2 (public)
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:00.521,972] <inf> central_uart: exchange_func: MTU exchange done
[00:00:01.073,120] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:01.079,315] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:02.083,709] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:02.089,935] <wrn> central_uart: main: NUS send timeout
[00:00:03.094,238] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:03.100,433] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:04.104,827] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:04.111,022] <wrn> central_uart: main: NUS send timeout
[00:00:05.115,325] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:05.121,887] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:06.126,220] <wrn> central_uart: main: Failed to sendreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
data over BLE connection(err -128)
[00:00:06.132,446] <wrn> central_uart: main: NUS send timeout
[00:00:07.136,779] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:07.143,005] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:08.147,338] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:08.153,564] <wrn> central_uart: main: NUS send timeout
[00:00:09.157,775] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:09.164,001] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:10.168,273] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:10.174,835] <wrn> central_uart: main: NUS send timeout
[00:00:11.179,107] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:11.185,333] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:12.189,727] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:12.195,953] <wrn> central_uart: main: NUS send timeout
[00:00:13.200,225] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:13.206,451] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:14.210,723] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:14.216,949] <wrn> central_uart: main: NUS send timeout
[00:00:15.221,466] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:15.227,722] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:16.232,025] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:16.238,250] <wrn> central_uart: main: NUS send timeout
[00:00:17.242,462] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:17.248,687] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:18.253,021] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:00:18.259,216] <wrn> central_uart: main: NUS send timeout
[00:00:19.263,427] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:19.269,653] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:20.274,200] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:20.280,395] <wrn> central_uart: main: NUS send timeout
[00:00:21.284,698] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:21.290,924] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:22.295,196] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:22.301,422] <wrn> central_uart: main: NUS send timeout
[00:00:23.305,694] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:23.311,889] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:24.316,192] <wrn> central_uart: main: Failed to sendreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
data over BLE connection(err -128)
[00:00:24.322,723] <wrn> central_uart: main: NUS send timeout
[00:00:25.327,117] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:25.333,343] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:26.337,677] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:26.343,902] <wrn> central_uart: main: NUS send timeout
[00:00:27.348,175] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:27.354,400] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:28.358,734] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:28.364,929] <wrn> central_uart: main: NUS send timeout
[00:00:29.369,171] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:29.375,518] <wrn> central_uart: main: NUS send timeout
Pairing failed conn: 60:55:F9:F5:29:D2 (public), reason 9
Service not found
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:30.229,705] <err> bt_smp: smp_timeout: SMP Timeout
[00:00:30.230,316] <wrn> central_uart: security_changed: Security failed: 60:55:F9:F5:29:D2 (public) level 1 err 9
[00:00:30.230,682] <wrn> central_uart: pairing_failed: Pairing failed conn: 60:55:F9:F5:29:D2 (public), reason 9
[00:00:30.321,960] <inf> central_uart: discovery_service_not_found: Service not found
[00:00:30.379,913] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:30.386,138] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:31.390,441] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:31.396,636] <wrn> central_uart: main: NUS send timeout
[00:00:32.400,909] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:32.407,165] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:33.411,437] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:33.417,663] <wrn> central_uart: main: NUS send timeout
[00:00:34.422,332] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:34.428,527] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:35.432,922] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:35.439,147] <wrn> central_uart: main: NUS send timeout
[00:00:36.443,389] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:36.449,615] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:37.453,918] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:37.460,113] <wrn> central_uart: main: NUS send timeout
[00:00:38.464,416] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:38.470,642] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:39.475,036] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:00:39.481,231] <wrn> central_uart: main: NUS send timeout
[00:00:40.485,595] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:40.491,821] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:41.496,124] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:41.502,349] <wrn> central_uart: main: NUS send timeout
[00:00:42.506,622] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:42.512,817] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:43.517,089] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:43.523,437] <wrn> central_uart: main: NUS send timeout
[00:00:44.527,709] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:44.533,935] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:45.538,299] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:45.544,494] <wrn> central_uart: main: NUS send timeout
[00:00:46.548,797] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:46.554,992] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:47.559,295] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:47.565,490] <wrn> central_uart: main: NUS send timeout
[00:00:48.569,793] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:48.576,110] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:49.580,413] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:49.586,639] <wrn> central_uart: main: NUS send timeout
[00:00:50.590,972] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:50.597,198] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:51.601,531] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:00:51.607,727] <wrn> central_uart: main: NUS send timeout
[00:00:52.611,999] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:52.618,225] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:53.622,711] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:00:53.628,967] <wrn> central_uart: main: NUS send timeout
[00:00:54.633,300] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:54.639,526] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:55.643,829] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:55.650,054] <wrn> central_uart: main: NUS send timeout
[00:00:56.654,357] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:56.660,552] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:57.664,825] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:00:57.671,234] <wrn> central_uart: main: NUS send timeout
[00:00:58.675,659] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:00:58.681,884] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:00:59.686,187] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:00:59.692,413] <wrn> central_uart: main: NUS send timeout
[00:01:00.696,716] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:00.702,941] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:01.707,305] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:01.713,500] <wrn> central_uart: main: NUS send timeout
[00:01:02.717,864] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:02.724,151] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:03.728,454] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:03.734,649] <wrn> central_uart: main: NUS send timeout
[00:01:04.738,922] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:04.745,117] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:05.749,481] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:05.755,706] <wrn> central_uart: main: NUS send timeout
[00:01:06.759,918] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:06.766,113] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:07.770,416] <wrn> central_uart: main: Failed to return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
send data over BLE connection(err -128)
[00:01:07.776,885] <wrn> central_uart: main: NUS send timeout
[00:01:08.781,158] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:08.787,353] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:09.791,717] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:01:09.797,943] <wrn> central_uart: main: NUS send timeout
[00:01:10.802,246] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:10.808,471] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:11.812,835] <wrn> central_uart: main: Failed to sendreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
data over BLE connection(err -128)
[00:01:11.819,061] <wrn> central_uart: main: NUS send timeout
[00:01:12.823,730] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:12.829,956] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:13.834,320] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:13.840,515] <wrn> central_uart: main: NUS send timeout
[00:01:14.844,909] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:14.851,104] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:15.855,438] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:01:15.861,663] <wrn> central_uart: main: NUS send timeout
[00:01:16.865,936] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:16.872,222] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:17.876,617] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:17.882,843] <wrn> central_uart: main: NUS send timeout
[00:01:18.887,145] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:18.893,341] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:19.897,735] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:19.903,961] <wrn> central_uart: main: NUS send timeout
[00:01:20.908,264] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:20.914,489] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:21.918,762] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:01:21.925,292] <wrn> central_uart: main: NUS send timeout
[00:01:22.929,626] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:22.935,821] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:23.940,124] <wrn> central_uart: main: Failed to sreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
end data over BLE connection(err -128)
[00:01:23.946,350] <wrn> central_uart: main: NUS send timeout
[00:01:24.950,622] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:24.956,817] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:25.961,212] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:25.967,407] <wrn> central_uart: main: NUS send timeout
[00:01:26.972,015] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:26.978,210] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:27.982,604] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:27.988,830] <wrn> central_uart: main: NUS send timeout
[00:01:28.993,072] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:28.999,267] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:30.003,570] <wrn> central_uart: main: Failed to sereturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
nd data over BLE connection(err -128)
[00:01:30.009,796] <wrn> central_uart: main: NUS send timeout
[00:01:31.014,068] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:31.020,294] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:32.024,627] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:01:32.030,853] <wrn> central_uart: main: NUS send timeout
[00:01:33.035,186] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:33.041,381] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
[00:01:34.045,745] <wrn> central_uart: main: Failed to senreturn ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
d data over BLE connection(err -128)
[00:01:34.051,971] <wrn> central_uart: main: NUS send timeout
[00:01:35.056,304] <wrn> central_uart: main: Failed to send data over BLE connection(err -128)
[00:01:35.062,500] <wrn> central_uart: main: NUS send timeout
return ENOTCONN
Failed to send data over BLE connection(err -128)
NUS send timeout
On the ESP32 side I see that both terminals are connected but there is no data transmission.