Difference between revisions of "BakeBit - Button/zh"
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|SIG || 信号 | |SIG || 信号 | ||
|} | |} | ||
| − | ==硬件连接== | + | == 示例程序：Button And Buzzer == |
| + | |||
| + | 本示例需要配合蜂鸣器使用。 | ||
| + | |||
| + | === 硬件连接 === | ||
简单的将 蜂鸣器 模块插入 D3接口，将 按键 插入 D4 接口，如下面这样： | 简单的将 蜂鸣器 模块插入 D3接口，将 按键 插入 D4 接口，如下面这样： | ||
::{| class="wikitable" | ::{| class="wikitable" | ||
|- | |- | ||
| − | |[[File: | + | |[[File:Button And Buzzer-1.jpg |frameless|300px]] || [[File:Button And Buzzer-2.jpg |frameless|300px]] |
|- | |- | ||
|} | |} | ||
| − | == | + | === 示例源代码 === |
| − | + | ||
<syntaxhighlight lang="python"> | <syntaxhighlight lang="python"> | ||
import time | import time | ||
| − | + | from bakebit import * | |
| + | import math | ||
| − | # | + | buzzer_pin = 3 #Port for buzzer |
| − | # | + | button = 4 #Port for Button |
| − | button | + | old_button_status = -1 |
| + | pinMode(buzzer_pin,"OUTPUT") # Assign mode for buzzer as output | ||
| + | pinMode(button,"INPUT") # Assign mode for Button as input | ||
| − | + | buzzer_on = False | |
| + | old_buzzer_on = not buzzer_on | ||
| + | button_pressed = False | ||
while True: | while True: | ||
| − | + | try: | |
| − | + | while True: | |
| − | + | button_status = digitalRead(button) #Read the Button status | |
| + | # print button_status | ||
| + | if old_button_status < 0: | ||
| + | break | ||
| − | + | if button_status != old_button_status: | |
| − | + | break | |
| + | time.sleep(0.2) | ||
| + | old_button_status = button_status | ||
| + | |||
| + | if button_status == 0: | ||
| + | button_pressed = True | ||
| + | else: | ||
| + | if button_pressed: | ||
| + | buzzer_on = not buzzer_on | ||
| + | button_pressed = False | ||
| + | |||
| + | if old_buzzer_on != buzzer_on: | ||
| + | old_buzzer_on = buzzer_on | ||
| + | if buzzer_on: | ||
| + | analogWrite(buzzer_pin,127) | ||
| + | print "Buzzing" | ||
| + | else: | ||
| + | analogWrite(buzzer_pin,0) | ||
| + | print "\tOff" | ||
| + | |||
| + | time.sleep(0.2) | ||
| + | except KeyboardInterrupt: # Stop the buzzer before stopping | ||
| + | digitalWrite(buzzer_pin,0) | ||
| + | break | ||
| + | except (IOError,TypeError) as e: | ||
| + | print("Error") | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | + | [https://github.com/friendlyarm/BakeBit/blob/master/Software/Python/bakebit_prj_Button_And_Buzzer.py Github] | |
| − | [ | + | |
| + | === 运行示例 === | ||
| + | |||
| + | 假设你已经参考[http://wiki.friendlyarm.com/bakebit bakebit教程]安装了BakeBit源代码，<br /> | ||
| + | 要运行示例程序，可以在开发板上进入 BakeBit/Software/Python目录,运行bakebit_prj_Button_And_Buzzer.py: | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | cd ~/BakeBit/Software/Python | ||
| + | sudo python bakebit_prj_Button_And_Buzzer.py | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | === 运行结果 === | ||
| + | |||
| + | 当点击按键时，蜂鸣器会响起，再次点击按键，蜂鸣器停止。 | ||
==相关资料== | ==相关资料== | ||
*[Schematic]([http://wiki.friendlyarm.com/wiki/images/8/8a/05-SCHEMATIC_Button.pdf BakeBit - Button.pdf]) | *[Schematic]([http://wiki.friendlyarm.com/wiki/images/8/8a/05-SCHEMATIC_Button.pdf BakeBit - Button.pdf]) | ||
| + | *[BakeBit Github项目](https://github.com/friendlyarm/BakeBit) | ||
| + | *[BakeBit Starter Kit手册](http://wiki.friendlyarm.com/bakebit/bakebit_starter_kit_manual_cn.pdf) | ||
Latest revision as of 07:46, 17 April 2017
1 介绍
- BakeBit - Button是一个瞬时（非自锁）按钮开关模块，用于检测按键事件，按钮被释放后自动恢复到常态。
- 在按钮未被按下时模块输出高电平，按钮被按下后输出低电平。
2 特性
- 使用标准的2.0mm 4 Pin BakeBit接口
- 数字信号输出
- PCB尺寸（mm）：20x24
- 引脚说明:
| 名称 | 描述 |
| GND | 地 |
| 5V | 电源5V |
| NC | 空 |
| SIG | 信号 |
3 示例程序：Button And Buzzer
本示例需要配合蜂鸣器使用。
3.1 硬件连接
简单的将 蜂鸣器 模块插入 D3接口，将 按键 插入 D4 接口，如下面这样：
3.2 示例源代码
import time from bakebit import * import math buzzer_pin = 3 #Port for buzzer button = 4 #Port for Button old_button_status = -1 pinMode(buzzer_pin,"OUTPUT") # Assign mode for buzzer as output pinMode(button,"INPUT") # Assign mode for Button as input buzzer_on = False old_buzzer_on = not buzzer_on button_pressed = False while True: try: while True: button_status = digitalRead(button) #Read the Button status # print button_status if old_button_status < 0: break if button_status != old_button_status: break time.sleep(0.2) old_button_status = button_status if button_status == 0: button_pressed = True else: if button_pressed: buzzer_on = not buzzer_on button_pressed = False if old_buzzer_on != buzzer_on: old_buzzer_on = buzzer_on if buzzer_on: analogWrite(buzzer_pin,127) print "Buzzing" else: analogWrite(buzzer_pin,0) print "\tOff" time.sleep(0.2) except KeyboardInterrupt: # Stop the buzzer before stopping digitalWrite(buzzer_pin,0) break except (IOError,TypeError) as e: print("Error")
3.3 运行示例
假设你已经参考bakebit教程安装了BakeBit源代码，
要运行示例程序，可以在开发板上进入 BakeBit/Software/Python目录,运行bakebit_prj_Button_And_Buzzer.py:
cd ~/BakeBit/Software/Python sudo python bakebit_prj_Button_And_Buzzer.py
3.4 运行结果
当点击按键时，蜂鸣器会响起，再次点击按键，蜂鸣器停止。
4 相关资料
- [Schematic](BakeBit - Button.pdf)
- [BakeBit Github项目](https://github.com/friendlyarm/BakeBit)
- [BakeBit Starter Kit手册](http://wiki.friendlyarm.com/bakebit/bakebit_starter_kit_manual_cn.pdf)
