蓝牙：经典：SPP Shell

本文档介绍如何运行蓝牙经典 SPP 功能。 spp 命令提供蓝牙经典 SPP Shell 命令。

命令

spp 命令：

uart:~$ spp
spp - Bluetooth SPP sh commands
Subcommands:
  register_with_channel  : <channel> [limited credit value] [hold_credit]
  register_with_uuid     : <bt-uuid16(e.g. 1101)|bt-uuid32|bt-uuid128(e.g.
                           00001101-0000-1000-8000-00805F9B34FB)> [limited
                           credit value] [hold_credit]
  connect_by_channel     : <channel> [limited credit value] [hold_credit]
  connect_by_uuid        : <bt-uuid16(e.g. 1101)|bt-uuid32|bt-uuid128(e.g.
                           00001101-0000-1000-8000-00805F9B34FB)> [limited
                           credit value] [hold_credit]
  send                   : send [length of packet(s)]
  rls                    : [overrun|parity|framing]
  disconnect             : [none]
  recv_complete          : [none]

服务器注册

uart:~$ spp register_with_channel 9
SPP: server registered (channel=9)

连接

在创建 SPP 连接之前，应先建立 ACL 连接。

uart:~$ spp register_with_channel 9
SPP: server registered (channel=9)
SPP: accepted incoming connection (conn=0x20004dc8)
SPP: connected (ep=0x20000d20, channel=9)

发送数据

uart:~$ spp send 5
SPP: tx data (len=5)

断开连接

uart:~$ spp disconnect
SPP: disconnecting...
SPP: disconnected (ep=0x20000d20)

流控制

uart:~$ spp register_with_channel 0 1 hold_credit
SPP: server registered (channel=6)
SPP: accepted incoming connection (conn=0x20005c70)
SPP: connected (ep=0x20006508, channel=6)
SPP: rx data (ep=0x20006508, len=10)
00000000: ff ff ff ff ff ff ff ff  ff ff                   |........ ..      |
uart:~$ spp recv_complete
SPP: rx data (ep=0x20006508, len=10)
00000000: ff ff ff ff ff ff ff ff  ff ff                   |........ ..      |
uart:~$ spp recv_complete
uart:~$ spp recv_complete
SPP: no inprogress buffer
uart:~$ spp send 10
SPP: tx data (len=10)
uart:~$ spp send 10
SPP: tx data (len=10)