http://192.168.180.206:8001/ 2026-05-15T08:28:19+00:00 http://192.168.180.206:8001/ http://192.168.180.206:8001/_media/wiki:dokuwiki.svg text/html 2021-07-07T10:40:13+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bluetooth:advertisement?rev=1625654413&do=diff Advertisement BLE has 40 channels (wider spacing 2MHz than classic BT) Channels 37, 38, 39 are designated to be advertisement channels. Those channels are located at begining, middle at end of radio band. Location was chosen to do not interact with main 3 WiFi channels (1,6,11) text/html 2018-08-24T09:28:29+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bluetooth:bcm20702a1?rev=1535102909&do=diff BCM20702A0 based USB dongles * ASUSTek Computer, Inc. Broadcom BCM20702A0 Bluetooth * ASUS Bt-400 0b05:17cd Firmware [ 489.427780] usb 3-7: new full-speed USB device number 9 using xhci_hcd [ 489.450343] usb 3-7: New USB device found, idVendor=0b05, idProduct=17cb, bcdDevice= 1.12 [ 489.450345] usb 3-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 489.450346] usb 3-7: Product: BCM20702A0 [ 489.450347] usb 3-7: Manufacturer: Broadcom Corp [ 489.450348] usb 3-7: SerialN… text/html 2025-06-25T11:55:44+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bluetooth:ble_console?rev=1750852544&do=diff ble console <https://github.com/nrfconnect/sdk-nrf/blob/main/scripts/shell/ble_console/ble-console.desktop> text/html 2022-11-10T09:49:59+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bluetooth:bluez?rev=1668073799&do=diff bluez Debug MGMT_DEBUG=1 /usr/local/libexec/bluetooth/bluetoothd -n -d -f /etc/bluetooth/main.conf Issues Not possible to enable continuous BLE discovery: BLE discovery works for 10 seconds, then it waits 5 second and start again. #define IDLE_DISCOV_TIMEOUT (5) ... /* * In case the restart of the discovery failed, then just trigger * it for the next idle timeout again. */ trigger_start_discovery(adapter, IDLE_DISCOV_TIMEOUT * 2); ... if (adapter->no_scan_restart_delay) trigger_star… text/html 2022-12-12T10:59:59+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bluetooth:gatt_caching?rev=1670842799&do=diff GATT Caching First read: * Attribute Caching in BLE: Advantages and Pitfalls Some references: * bluetoothctl remove XX:XX:XX:XX:XX:XX does not remove cache file #191 * Service changed indication * Service Change on BLE GATT Table * <https://stackoverflow.com/questions/43446918/bluez-showing-old-cached-data-on-dbus> * ESP-IDF: * How to Indicate BLE 'Service Changed' (0x2A05) #451 * How to Indicate BLE 'Service Changed' (0x2A05) #1777 * service_change_demo.zip * Gene… text/html 2018-09-19T09:18:22+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bluetooth:kernel?rev=1537348702&do=diff mount -t debugfs none /sys/kernel/debug echo "file net/bluetooth/* +pfl" > /sys/kernel/debug/dynamic_debug/control Enable pr_debug CFLAGS += -DDEBUG=1 cp /lib/modules/$(uname -r)/build/.config . cp /lib/modules/$(uname -r)/build/Module.symvers . make oldconfig #make EXTRAVERSION=-my modules_prepare make modules_prepare make M=net/bluetooth sudo cp net/bluetooth/bluetooth.ko /lib/modules/`uname -r`/updates depmod -a sudo rmmod btusb btrtl btintel btbcm bnep btusb bluetooth modinfo …