Difference between revisions of "BakeBit - Button/zh"

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==介绍==
 
==介绍==
 
[[File:BakeBit - Button01.jpg|thumb|按键]]
 
[[File:BakeBit - Button01.jpg|thumb|按键]]
−
*BakeBit - Button是一个瞬时（非自锁）按钮开关模块，用于检测按键事件，按钮被释放后自己恢复到常态。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。
+
*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。
  
 
==特性==
 
==特性==
−
* 使用标准的2.0mm 4 PIN接口
+
* 使用标准的2.0mm 4 Pin BakeBit接口
−
* 尺寸为 20x24mm
+
* 数字信号输出
 
* PCB尺寸（mm）：20x24
 
* PCB尺寸（mm）：20x24
−
[[File:BakeBit - Button002.png | frameless|400px|BakeBit - Button.PCB]]
+
 
 +
[[File:BakeBit - Button002.png | frameless|300px|BakeBit - Button.PCB]]
  
 
* 引脚说明:
 
* 引脚说明:
Line 23: Line 25:
 
|SIG  || 信号
 
|SIG  || 信号
 
|}
 
|}
 +
== 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：
 +
 +
::{| class="wikitable"
 +
|-
 +
|[[File:Button And Buzzer-1.jpg |frameless|300px]]    || [[File:Button And Buzzer-2.jpg |frameless|300px]]
 +
|-
 +
|}
 +
 +
=== 示例源代码 ===
 +
 +
<syntaxhighlight lang="python">
 +
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")
 +
</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。
  
−
==硬件连接==
+
==相关资料==
−
参考下图连接模块：
+
*[Schematic]([http://wiki.friendlyarm.com/wiki/images/8/8a/05-SCHEMATIC_Button.pdf BakeBit - Button.pdf])
−
[[File:BakeBit - Button_nanopi_NEO.jpg|frameless|600px|BakeBit - Button_nanopi_NEO]]
+
*[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

English

1 介绍

按键
  • 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

BakeBit - Button.PCB

  • 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：

Button And Buzzer-1.jpg Button And Buzzer-2.jpg

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")

Github

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

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