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tools:bluetooth [2023/12/06 03:15] – external edit 127.0.0.1tools:bluetooth [2023/12/15 07:48] (current) – [Python] darron
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 ====Bluetooth==== ====Bluetooth====
- 
-There are two standards in use known as BT classic and BT low energy. 
- 
-Anything other than BLE is considered obsolete now. 
- 
-^HCI / LMP^Version^ 
-|0| 1.0b| 
-|1| 1.1| 
-|2| 1.2| 
-|3| 2.0+EDR| 
-|4| 2.1+EDR| 
-|5| 3.0+HS| 
-|6| 4.0| 
-|7| 4.1| 
-|8| 4.2| 
-|9| 5.0| 
-|10| 5.1| 
-|11| 5.2| 
-|12| 5.3| 
- 
-BT 3.0+HS utilises WiFi. BT 4.0 onward is BLE, anything prior is BDR/EDR. 
  
 See [[interfaces:bluetooth]] for Linux Bluetooth devices and setup. See [[interfaces:bluetooth]] for Linux Bluetooth devices and setup.
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 ===Services=== ===Services===
  
-Development has two services dependencies, dbus and bluetoothd.+Development has two service dependencies, dbus and bluetoothd.
  
 ==DBUS== ==DBUS==
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 </code> </code>
  
-===Development===+===C development=== 
 + 
 +Development in C is mostly about reading the code examples.
  
 ==Headers== ==Headers==
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 </code> </code>
  
-=== Test===+== Test==
  
-Test [[:boards:wb15|BLE]] device.+Test [[:boards:wb15|STM32WB15CC]] BLE device.
  
 <code> <code>
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 Shutting down... Shutting down...
 </code> </code>
 +
 +LED on/off for demo connection above.
 +
 +<code>
 +[GATT client]# write-value -w 0x000E 0x01 0x01
 +Write command sent
 +[GATT client]# write-value -w 0x000E 0x01 0x00
 +Write command sent
 +[GATT client]#
 +</code>
 +
 +===Python===
 +
 +It's certainly a lot easier to write code to access BLE devices
 +in Python and preferred for demo purposes and maybe even
 +end use cases.
 +
 +<code>
 +apt install python3-gattlib
 +</code>
 +
 +Example for the [[:boards:wb15|STM32WB15CC]] BLE demo.
 +
 +<code>
 +import sys, time
 +
 +from gattlib import GATTRequester
 +
 +req = GATTRequester("00:80:E1:22:F9:7C", False)
 +
 +req.connect(True)
 +
 +for n in range(10):
 +    req.write_cmd(0x000E, bytes([0x01,0x01]))
 +    time.sleep(1)
 +    req.write_cmd(0x000E, bytes([0x01,0x00]))
 +    time.sleep(1)
 +
 +req.disconnect()
 +</code>