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interfaces:bluetooth [2023/12/06 01:51] darron [Services] |
interfaces:bluetooth [2023/12/15 07:45] (current) darron [USB] |
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| ====Bluetooth==== | ====Bluetooth==== | ||
| - | Various Bluetooth device setup in Linux on RPi and similar devices. | + | See [[tools: |
| There are two standards in use known as BT classic and BT low energy. | There are two standards in use known as BT classic and BT low energy. | ||
| - | Anything other than BLE is considered | + | Anything other than BLE is considered |
| ^HCI / LMP^Version^ | ^HCI / LMP^Version^ | ||
| - | |0| 1.0b| | + | |0| |
| - | |1| 1.1| | + | |1| |
| - | |2| 1.2| | + | |2| |
| - | |3| 2.0+EDR| | + | |3| |
| - | |4| 2.1+EDR| | + | |4| |
| - | |5| 3.0+HS| | + | |5| |
| - | |6| 4.0| | + | |6| |
| - | |7| 4.1| | + | |7| |
| - | |8| 4.2| | + | |8| |
| - | |9| 5.0| | + | |9| |
| - | |10| 5.1| | + | |10| 5.1| |
| - | |11| 5.2| | + | |11| 5.2| |
| - | |12| 5.3| | + | |12| 5.3| |
| BT 3.0+HS utilises WiFi. BT 4.0 onward is BLE, anything prior is BDR/EDR. | BT 3.0+HS utilises WiFi. BT 4.0 onward is BLE, anything prior is BDR/EDR. | ||
| - | ===Hardware=== | + | ===RPi=== |
| - | + | ||
| - | ==RPi== | + | |
| The Raspberry Pi3/4 have built in BT BLE 5.0 but it can be awkward to setup | The Raspberry Pi3/4 have built in BT BLE 5.0 but it can be awkward to setup | ||
| Line 39: | Line 37: | ||
| </ | </ | ||
| - | Alternatively, | + | Alternatively, |
| - | on both the Pi3 and Pi4. | + | on both the Pi3 and Pi4 (reboot to take effect). |
| < | < | ||
| Line 115: | Line 113: | ||
| </ | </ | ||
| - | ==USB== | + | ===USB=== |
| - | Here is a list of obsolete | + | Here is a list of legacy |
| __BARROT__ | __BARROT__ | ||
| - | BT 2.0 CSR clones which are very cheap from pound stores. | + | CSR clones which are very cheap and found in pound stores. |
| + | |||
| + | BT 2.0 | ||
| < | < | ||
| Line 157: | Line 157: | ||
| __Silicon Wave__ | __Silicon Wave__ | ||
| - | A very old BT 1.2 interface | + | A very old USB adapter. |
| + | |||
| + | BT 1.2 | ||
| < | < | ||
| Line 218: | Line 220: | ||
| </ | </ | ||
| - | BT 2.0 + EDR | + | BT 2.0 |
| < | < | ||
| Line 245: | Line 247: | ||
| Manufacturer: | Manufacturer: | ||
| </ | </ | ||
| - | ===Services=== | ||
| - | ==DBUS== | ||
| - | |||
| - | I normally disable dbus with systemd and here is how to enable this service with `runit' | ||
| - | |||
| - | < | ||
| - | #!/bin/bash | ||
| - | sleep 1 | ||
| - | |||
| - | #LOG | ||
| - | exec 2>&1 | ||
| - | ulimit -aH | ||
| - | |||
| - | #RUN | ||
| - | export TZ=" | ||
| - | rm -Rf / | ||
| - | mkdir -p / | ||
| - | exec dbus-daemon --syslog --syslog-only --nofork --config-file=/ | ||
| - | </ | ||
| - | |||
| - | ==BLUETOOTHD== | ||
| - | |||
| - | Install bluez and various tools if not already installed | ||
| - | |||
| - | < | ||
| - | apt install bluez bluez-tools bluez-test-tools bluez-hcidump | ||
| - | </ | ||
| - | |||
| - | I prefer to run Bluetoothd from `runit' | ||
| - | |||
| - | This run file can work but it should wait until dbus is ready before starting. | ||
| - | |||
| - | See the wait method of runit to detect / | ||
| - | |||
| - | < | ||
| - | #!/bin/bash | ||
| - | sleep 5 | ||
| - | |||
| - | #LOG | ||
| - | exec 2>&1 | ||
| - | ulimit -aH | ||
| - | |||
| - | #RUN | ||
| - | export TZ=" | ||
| - | exec / | ||
| - | </ | ||
| - | |||
| - | ===Development=== | ||
| - | |||
| - | Install dev headers for the current installation of bluez | ||
| - | |||
| - | < | ||
| - | apt install libbluetooth-dev | ||
| - | </ | ||
| - | |||
| - | Access source code for documentation of how to use bluez | ||
| - | |||
| - | < | ||
| - | git clone https:// | ||
| - | </ | ||
