How to set up a Bluetooth connection

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1. How to setup Bluetooth[edit source]

1.1. Setup[edit source]

Check that the driver has been probed correctly in the kernel log message

[    0.923697] STM32 USART driver initialized
[    0.928711] 4000e000.serial: ttyS1 at MMIO 0x4000e000 (irq = 42, base_baud = 6046875) is a stm32-usart

Check the Bluetooth interface

 hciconfig -a
hci0:   Type: Primary  Bus: UART
       BD Address: 43:43:A1:12:1F:AC  ACL MTU: 1021:8  SCO MTU: 64:1
       DOWN 
       RX bytes:619 acl:0 sco:0 events:31 errors:0
       TX bytes:410 acl:0 sco:0 commands:31 errors:0
       Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
       Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
       Link policy: RSWITCH SNIFF 
       Link mode: SLAVE ACCEPT

1.2. Initialize the Bluetooth interface[edit source]

 hciconfig hci0 up
 hciconfig -a
hci0:   Type: Primary  Bus: UART
       BD Address: AA:AA:AA:AA:AA:AA  ACL MTU: 1021:8  SCO MTU: 64:1
       UP RUNNING 
       RX bytes:1378 acl:0 sco:0 events:74 errors:0
       TX bytes:1186 acl:0 sco:0 commands:74 errors:0
       Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
       Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
       Link policy: RSWITCH SNIFF 
       Link mode: SLAVE ACCEPT 
       Name: 'BlueZ 5.46'
       Class: 0x000000
       Service Classes: Unspecified
       Device Class: Miscellaneous, 
       HCI Version: 4.1 (0x7)  Revision: 0x0
       LMP Version: 4.1 (0x7)  Subversion: 0x2209
       Manufacturer: Broadcom Corporation (15)