How does one do the following in bluetoothctl from a script and command line that one would do in gatttool as follows: # gatttool -i hci0 -b $bd_addr -u 2a29 --char-read handle: 0x0017 value: 54 65 78 61 73 20 49 6e 73 74 72 75 6d 65 6e 74 73 # gatttool -i hci0 -b $bd_addr --char-desc | grep -i aa22 handle = 0x002f, uuid = f000aa22-0451-4000-b000-000000000000 # gatttool -i hci0 -b $bd_addr -a 0x002f --char-write-req -n 01 Characteristic value was written successfully For instance: # bluetoothctl connect CC:78:AB:7E:87:07 Attempting to connect to CC:78:AB:7E:87:07 Connection successful # bluetoothctl gatt.select-attribute 2a29 # bluetoothctl gatt.read No attribute selected # bluetoothctl gatt.select-attribute f000aa22-0451-4000-b000-000000000000 # bluetoothctl gatt.acquire-write No attribute selected # bluetoothctl gatt.write 0x01 No attribute selected John Klug
