bluetooth — 提供无线蓝牙功能

该模块提供ble蓝牙通讯、HID模拟设备功能。

ble类

ble类, 支持客户端与主机端的BLE通讯及HID功能。HID功能,遵循BLE HID规范,可实现模拟无线蓝牙HID设备(如鼠标，键盘，游戏手柄等人机交互设备)。

class bluetooth.ble

BLE 通讯

ble.init(name='mpython')

BLE客户端设备初始化。当不带参数时,默认客户端设备名为 mpython 。

  • name - 客户端设备名称,字符串类型。

ble.start_advertising()

BLE客户端设备开启广播。开启后,可被BLE主机设置搜索。

ble.board_send(buf)

BLE客户端向BLE主机端发送字节缓存

ble.board_register_output_callback(f)

接收BLE主机端的数据的回调函数, f 为回调函数,函数定义如下, f(bytearray) 。

ble.stop_advertising()

BLE客户端设备关闭广播

ble.hidd_send_consumer(ble.HID_CONSUMER_xxx, True)

模拟HID消费类设备的控制器。如,蓝牙遥控器。

  • 第一参数 - HID Consumer类的常用的按键ID。如你想控制电视机开机,则用 ble.HID_CONSUMER_POWER 。具体的按键常量详见 HID Consumer ID表 。

  • 第二参数- 按键状态, True 为按下, False 为松开。

电视遥控音量加减的示例:

# 导入蓝牙ble类
from bluetooth import ble
import time

# ble初始化
ble.init()
# 等待主机设备连接
time.sleep(2)
# 按下音量+
ble.hidd_send_consumer(ble.HID_CONSUMER_VOLUME_UP,True)
# 按下保持状态
time.sleep(1)
# 释放按键
ble.hidd_send_consumer(ble.HID_CONSUMER_VOLUME_UP,False)

# 按下音量-
ble.hidd_send_consumer(ble.HID_CONSUMER_VOLUME_DOWN,True)
# 按下保持状态
time.sleep(1)
# 释放按键
ble.hidd_send_consumer(ble.HID_CONSUMER_VOLUME_DOWN,False)
ble.hidd_send_keyboard(keys = [key1...], modifier = KEY_MASK_NONE)

模拟HID键盘设备。

  • keys - 一个或多个按键的数组类型。当数组内成员表示为按下的按键,如要释放按键只需将数组内对应位置的值赋值为0。具体的按键常量详见 HID Keyboard ID表 。

  • modifier - 键盘组合按键,默认为 KEY_MASK_NONE 表示为单按键 ,可以为以下值。如要用到2个组合按键,可使用 | 或逻辑运算,像 Ctrl + Alt 组合按键时为 KEY_MASK_L_CTRL | KEY_MASK_L_ALT

    • KEY_MASK_NONE - 0

    • KEY_MASK_L_CTRL - 1

    • KEY_MASK_L_SHIFT - 2

    • KEY_MASK_L_ALT - 4

    • KEY_MASK_L_GUI - 8

    • KEY_MASK_R_CTRL - 16

    • KEY_MASK_R_SHIFT - 32

    • KEY_MASK_R_ALT - 64

    • KEY_MASK_R_GUI - 128

键盘示例:

# Ctrl + F组合按键
ble.hidd_send_keyboard([ble.HID_KEY_F],ble.KEY_MASK_L_CTRL)
# 释放按键
ble.hidd_send_keyboard([0])

# Ctrl + Alt + Del 组合按键
ble.hidd_send_keyboard([ble.HID_KEYPAD_DOT],ble.KEY_MASK_L_CTRL | ble.KEY_MASK_L_ALT )
 # 释放按键
ble.hidd_send_keyboard([0])

# 单按键 A
ble.hidd_send_keyboard([ble.HID_KEY_A])
# 释放按键
ble.hidd_send_keyboard([0])
ble.hidd_send_mouse(button=0, x=0, y=0)

模拟HID鼠标设备。

  • button - 鼠标按键, 可以为以下值:

    • 0 - 释放按键

    • ble.HID_MOUSE_LEFT - 鼠标左键

    • ble.HID_MOUSE_MIDDLE - 鼠标中键

    • ble.HID_MOUSE_RIGHT - 鼠标右键

  • x - 鼠标坐标x轴的相对位移,范围-1023 ~ 1023

  • y - 鼠标坐标y轴的相对位移,范围-1023 ~ 1023

鼠标示例:

# 按下鼠标左键
ble.hidd_send_mouse(ble.HID_MOUSE_LEFT)
# 释放鼠标按键
ble.hidd_send_mouse(0)
# 坐标x轴位移
ble.hidd_send_mouse(x = 50 )

常量

HID Consumer

HID Consumer Usage IDs

数值

定义

ble.HID_CONSUMER_POWER

48

Power

ble.HID_CONSUMER_RESET

49

Reset

ble.HID_CONSUMER_SLEEP

50

Sleep

ble.HID_CONSUMER_MENU

64

Menu

ble.HID_CONSUMER_SELECTION

128

Selection

ble.HID_CONSUMER_ASSIGN_SEL

129

Assign Selection

ble.HID_CONSUMER_MODE_STEP

130

Mode Step

ble.HID_CONSUMER_RECALL_LAST

131

Recall Last

ble.HID_CONSUMER_QUIT

148

Quit

ble.HID_CONSUMER_HELP

149

Help

ble.HID_CONSUMER_CHANNEL_UP

156

Channel Increment

ble.HID_CONSUMER_CHANNEL_DOWN

157

Channel Decrement

ble.HID_CONSUMER_PLAY

176

Play

ble.HID_CONSUMER_PAUSE

177

Pause

ble.HID_CONSUMER_RECORD

178

Record

ble.HID_CONSUMER_FAST_FORWARD

179

Fast Forward

ble.HID_CONSUMER_REWIND

180

Rewind

ble.HID_CONSUMER_SCAN_NEXT_TRK

181

Scan Next Track

ble.HID_CONSUMER_SCAN_PREV_TRK

182

Scan Previous Track

ble.HID_CONSUMER_STOP

183

Stop

ble.HID_CONSUMER_EJECT

184

Eject

ble.HID_CONSUMER_RANDOM_PLAY

185

Random Play

ble.HID_CONSUMER_SELECT_DISC

186

Select Disk

ble.HID_CONSUMER_ENTER_DISC

187

Enter Disc

ble.HID_CONSUMER_REPEAT

188

Repeat

ble.HID_CONSUMER_STOP_EJECT

204

Stop/Eject

ble.HID_CONSUMER_PLAY_PAUSE

205

Play/Pause

ble.HID_CONSUMER_PLAY_SKIP

206

Play/Skip

ble.HID_CONSUMER_VOLUME

224

Volume

ble.HID_CONSUMER_BALANCE

225

Balance

ble.HID_CONSUMER_MUTE

226

Mute

ble.HID_CONSUMER_BASS

227

Bass

ble.HID_CONSUMER_VOLUME_UP

233

Volume Increment

ble.HID_CONSUMER_VOLUME_DOWN

234

Volume Decrement

HID Keyboard

HID Keyboard Usage IDs

数值

定义

ble.HID_KEY_A

4

Keyboard A and a

ble.HID_KEY_B

5

Keyboard B and b

ble.HID_KEY_C

6

Keyboard C and c

ble.HID_KEY_D

7

Keyboard D and d

ble.HID_KEY_E

8

Keyboard E and e

ble.HID_KEY_F

9

Keyboard F and f

ble.HID_KEY_G

10

Keyboard G and g

ble.HID_KEY_H

11

Keyboard H and h

ble.HID_KEY_I

12

Keyboard I and i

ble.HID_KEY_J

13

Keyboard J and j

ble.HID_KEY_K

14

Keyboard K and k

ble.HID_KEY_L

15

Keyboard L and l

ble.HID_KEY_M

16

Keyboard M and m

ble.HID_KEY_N

17

Keyboard N and n

ble.HID_KEY_O

18

Keyboard O and o

ble.HID_KEY_P

19

Keyboard P and p

ble.HID_KEY_Q

20

Keyboard Q and q

ble.HID_KEY_R

21

Keyboard R and r

ble.HID_KEY_S

22

Keyboard S and s

ble.HID_KEY_T

23

Keyboard T and t

ble.HID_KEY_U

24

Keyboard U and u

ble.HID_KEY_V

25

Keyboard V and v

ble.HID_KEY_W

26

Keyboard W and w

ble.HID_KEY_X

27

Keyboard X and x

ble.HID_KEY_Y

28

Keyboard Y and y

ble.HID_KEY_Z

29

Keyboard Z and z

ble.HID_KEY_1

30

Keyboard 1

ble.HID_KEY_2

31

Keyboard 2

ble.HID_KEY_3

32

Keyboard 3

ble.HID_KEY_4

33

Keyboard 4

ble.HID_KEY_5

34

Keyboard 5

ble.HID_KEY_6

35

Keyboard 6

ble.HID_KEY_7

36

Keyboard 7

ble.HID_KEY_8

37

Keyboard 8

ble.HID_KEY_9

38

Keyboard 9

ble.HID_KEY_0

39

Keyboard 0

ble.HID_KEY_RETURN

40

Keyboard Return (ENTER)

ble.HID_KEY_ESCAPE

41

Keyboard ESCAPE

ble.HID_KEY_DELETE

42

Keyboard DELETE (Backspace)

ble.HID_KEY_TAB

43

Keyboard Tab

ble.HID_KEY_SPACEBAR

44

Keyboard Spacebar

ble.HID_KEY_MINUS

45

Keyboard - and (underscore)

ble.HID_KEY_EQUAL

46

Keyboard = and +

ble.HID_KEY_LEFT_BRKT

47

Keyboard [ and {

ble.HID_KEY_RIGHT_BRKT

48

Keyboard ] and }

ble.HID_KEY_BACK_SLASH

49

Keyboard and |

ble.HID_KEY_SEMI_COLON

51

Keyboard ; and :

ble.HID_KEY_SGL_QUOTE

52

Keyboard ‘ and “

ble.HID_KEY_GRV_ACCENT

53

Keyboard Grave Accent and Tilde

ble.HID_KEY_COMMA

54

Keyboard , and <

ble.HID_KEY_DOT

55

Keyboard . and >

ble.HID_KEY_FWD_SLASH

56

Keyboard / and ?

ble.HID_KEY_CAPS_LOCK

57

Keyboard Caps Lock

ble.HID_KEY_F1

58

Keyboard F1

ble.HID_KEY_F2

59

Keyboard F2

ble.HID_KEY_F3

60

Keyboard F3

ble.HID_KEY_F4

61

Keyboard F4

ble.HID_KEY_F5

62

Keyboard F5

ble.HID_KEY_F6

63

Keyboard F6

ble.HID_KEY_F7

64

Keyboard F7

ble.HID_KEY_F8

65

Keyboard F8

ble.HID_KEY_F9

66

Keyboard F9

ble.HID_KEY_F10

67

Keyboard F10

ble.HID_KEY_F11

68

Keyboard F11

ble.HID_KEY_F12

69

Keyboard F12

ble.HID_KEY_PRNT_SCREEN

70

Keyboard Print Screen

ble.HID_KEY_SCROLL_LOCK

71

Keyboard Scroll Lock

ble.HID_KEY_PAUSE

72

Keyboard Pause

ble.HID_KEY_INSERT

73

Keyboard Insert

ble.HID_KEY_HOME

74

Keyboard Home

ble.HID_KEY_PAGE_UP

75

Keyboard PageUp

ble.HID_KEY_DELETE_FWD

76

Keyboard Delete Forward

ble.HID_KEY_END

77

Keyboard End

ble.HID_KEY_PAGE_DOWN

78

Keyboard PageDown

ble.HID_KEY_RIGHT_ARROW

79

Keyboard RightArrow

ble.HID_KEY_LEFT_ARROW

80

Keyboard LeftArrow

ble.HID_KEY_DOWN_ARROW

81

Keyboard DownArrow

ble.HID_KEY_UP_ARROW

82

Keyboard UpArrow

ble.HID_KEY_NUM_LOCK

83

Keypad Num Lock and Clear

ble.HID_KEY_DIVIDE

84

Keypad /

ble.HID_KEY_MULTIPLY

85

Keypad *

ble.HID_KEY_SUBTRACT

86

Keypad -

ble.HID_KEY_ADD

87

Keypad +-

ble.HID_KEY_ENTER

88

Keypad ENTER

ble.HID_KEYPAD_1

89

Keypad 1 and End

ble.HID_KEYPAD_2

90

Keypad 2 and Down Arrow

ble.HID_KEYPAD_3

91

Keypad 3 and PageDn

ble.HID_KEYPAD_4

92

Keypad 4 and Lfet Arrow

ble.HID_KEYPAD_5

93

Keypad 5

ble.HID_KEYPAD_6

94

Keypad 6 and Right Arrow

ble.HID_KEYPAD_7

95

Keypad 7 and Home

ble.HID_KEYPAD_8

96

Keypad 8 and Up Arrow

ble.HID_KEYPAD_9

97

Keypad 9 and PageUp

ble.HID_KEYPAD_0

98

Keypad 0 and Insert

ble.HID_KEYPAD_DOT

99

Keypad . and Delete

ble.HID_KEY_MUTE

127

Keyboard Mute

ble.HID_KEY_VOLUME_UP

128

Keyboard Volume up

ble.HID_KEY_VOLUME_DOWN

129

Keyboard Volume down

HID Mouse

HID Mouse Usage IDs

数值

定义

ble.HID_MOUSE_LEFT

253

Mouse Left

ble.HID_MOUSE_MIDDLE

254

Mouse Middle

ble.HID_MOUSE_RIGHT

255

Mouse Right
PPT 翻页遥控器
 1# MIT license; Copyright (c) 2019 Labplus & mPython Development 
 2# V1.0 Tangliufeng
 3# 掌控板PPT翻页遥控器
 4# 使用方式: 短按键A-上页；短按键B-下页；长按键A-进入放映；长按键B-退出放映
 5#
 6from mpython import *
 7from bluetooth import ble
 8import time
 9# 按键状态标志
10btn_a_status, btn_b_status = [0, 0]
11
12oled.DispChar('PPT 翻页控制器',20,20)
13oled.show()
14
15# ble初始化
16ble.init('PPT_Remote')
17# 等待蓝牙主机
18sleep(2)
19
20while True:
21    # 当按键A为低电平且标志为0
22    if button_a.value() == 0 and btn_a_status == 0:
23        btn_a_time = time.ticks_ms()
24        # 按键保持标志
25        a_hold_flag = False
26        # 当按键一直按下
27        while not button_a.value():
28            # 当按下保持2秒
29            if time.ticks_diff(time.ticks_ms(), btn_a_time) > 2000:
30                # 发送 F5,放映幻灯片
31                ble.hidd_send_keyboard([ble.HID_KEY_F5])
32                print("Pressed F5")
33                # 按键保持标志置为1
34                a_hold_flag = True
35                break
36        # 如果没有持续按下按键
37        if a_hold_flag is False:
38            # 发送 LeftArrow,幻灯片上页
39            ble.hidd_send_keyboard([ble.HID_KEY_LEFT_ARROW])
40            print("Pressed LeftArrow")
41        # 按键状态置为1
42        btn_a_status = 1
43
44    # 当按键A为高电平且标志为1时,释放按键
45    elif button_a.value() == 1 and btn_a_status == 1:
46        print("Relesed Button A")
47        ble.hidd_send_keyboard([0])
48        btn_a_status = 0
49
50    if button_b.value() == 0 and btn_b_status == 0:
51        btn_b_time = time.ticks_ms()
52        b_hold_flag = False
53
54        while not button_b.value():
55            if time.ticks_diff(time.ticks_ms(), btn_b_time) > 2000:
56                # 发送 ESC,退出放映幻灯片
57                ble.hidd_send_keyboard([ble.HID_KEY_ESCAPE])
58                print("Pressed ESC")
59                b_hold_flag = True
60                break
61
62        if b_hold_flag is False:
63            # 发送 RightArrow,幻灯片翻页
64            ble.hidd_send_keyboard([ble.HID_KEY_RIGHT_ARROW])
65            print("Pressed RightArrow")
66
67        btn_b_status = 1
68
69    elif button_b.value() == 1 and btn_b_status == 1:
70        print("Relesed Button B")
71        ble.hidd_send_keyboard([0])
72        btn_b_status = 0