微机维护不考虑了，和我课冲突了

我是北辰大一的

import PCF8591 as ADC
import time
# 初始化
def makerobo_setup():
ADC.setup(0x48)# 设置PCF8591模块地址
global makerobo_state # 状态变量
# 方向判断函数
def makerobo_direction():
state = ['home', 'up', 'down', 'left', 'right', 'pressed'] # 方向状态信息
i = 0
if ADC.read(0) <= 30:
i = 1# up方向
if ADC.read(0) >= 225:
i = 2# down方向
if ADC.read(1) >= 225:
i = 4# left方向
if ADC.read(1) <= 30:
i = 3# right方向
if ADC.read(2) == 0 and ADC.read(1) == 128:
i = 5# Button按下
# home位置
if ADC.read(0) - 125 < 15 and ADC.read(0) - 125 > -15and ADC.read(1) - 125 < 15 and ADC.read(1) - 125 > -15 and ADC.read(2) == 255:
i = 0
return state[i] # 返回状态
# 循环函数
def makerobo_loop():
makerobo_status = '' # 状态值赋空值
while True:
makerobo_tmp = makerobo_direction() # 调用方向判断函数
if makerobo_tmp != None and makerobo_tmp != makerobo_status: # 判断状态是否发生改变
print (makerobo_tmp) # 打印出方向位
makerobo_status = makerobo_tmp # 把当前状态赋给状态值，以防止同一状态多次打印
# 异常处理函数
def destroy():
pass
# 程序入口
if __name__ == '__main__':
makerobo_setup() # 初始化
try:
makerobo_loop() # 调用循环函数
except KeyboardInterrupt: # 当按下Ctrl+C时，将执行destroy()子程序。
destroy() # 调用释放函数

import smbus
import PCF8591 as ADC
import time
# 对应比较旧的版本如RPI V1 版本，则 "bus = smbus.SMBus(0)"
bus = smbus.SMBus(1)
#通过 sudo i2cdetect -y -1 可以获取到IIC的地址
def setup(Addr):
global address
address = Addr
# 读取模拟量信息
def read(chn): #通道选择，范围是0-3之间
try:
if chn == 0:
bus.write_byte(address,0x40)
if chn == 1:
bus.write_byte(address,0x41)
if chn == 2:
bus.write_byte(address,0x42)
if chn == 3:
bus.write_byte(address,0x43)
bus.read_byte(address) # 开始进行读取转换
except Exception as e:
print ("Address: %s" % address)
print (e)
return bus.read_byte(address)
# 模块输出模拟量控制，范围为0-255
def write(val):
try:
temp = val # 将数值赋给temmp 变量
temp = int(temp) # 将字符串转换为整型
# 在终端上打印temp以查看，否则将注释掉
bus.write_byte_data(address, 0x40, temp)
except Exception as e:
print ("Error: Device address: 0x%2X" % address)
print (e)
def makerobo_setup():
ADC.setup(0x48) # 设置PCF8591模块地址
# 无限循环
def loop():
while True:
print (ADC.read(0)) #读取AIN0的数值，插上跳线帽之后，采用的是内部的电位器；
ADC.write(ADC.read(0)) # 控制AOUT输出电平控制LED灯
# 异常处理函数
def destroy():
ADC.write(0) #AOUT输出为0
#程序入口
if __name__ == "__main__":
try:
makerobo_setup() #地址设置
loop() # 调用无限循环
except KeyboardInterrupt:
destroy() #释放AOUT端口

import smbus
import PCF8591 as ADC
import time
# 对应比较旧的版本如RPI V1 版本，则 "bus = smbus.SMBus(0)"
bus = smbus.SMBus(1)
#通过 sudo i2cdetect -y -1 可以获取到IIC的地址
def setup(Addr):
global address
address = Addr
# 读取模拟量信息
def read(chn): #通道选择，范围是0-3之间
try:
if chn == 0:
bus.write_byte(address,0x40)
if chn == 1:
bus.write_byte(address,0x41)
if chn == 2:
bus.write_byte(address,0x42)
if chn == 3:
bus.write_byte(address,0x43)
bus.read_byte(address) # 开始进行读取转换
except Exception as e:
print ("Address: %s" % address)
print (e)
return bus.read_byte(address)
# 模块输出模拟量控制，范围为0-255
def write(val):
try:
temp = val # 将数值赋给temmp 变量
temp = int(temp) # 将字符串转换为整型
# 在终端上打印temp以查看，否则将注释掉
bus.write_byte_data(address, 0x40, temp)
except Exception as e:
print ("Error: Device address: 0x%2X" % address)
print (e)
def makerobo_setup():
ADC.setup(0x48) # 设置PCF8591模块地址
# 无限循环
import RPi.GPIO as GPIO
import time
def loop():
while True:
print (ADC.read(0)) #读取AIN0的数值，插上跳线帽之后，采用的是内部的电位器；
ADC.write(ADC.read(0)) # 控制AOUT输出电平控制LED灯
# 异常处理函数
def destroy():
ADC.write(0) #AOUT输出为0
#程序入口
if __name__ == "__main__":
try:
makerobo_setup() #地址设置
loop() # 调用无限循环
except KeyboardInterrupt:
destroy() #释放AOUT端口

pyright © 1999-2020, CSDN.NET, All Rights Reserved
打开APP
xbw12138
关注
树莓派蜂鸣器+超声波测距模块 原创
2016-07-15 21:10:11
3点赞
xbw12138
码龄8年
关注
/2016/07/15
by xbw/
///环境 树莓派 2B+
</pre><p></p><pre>
#! /usr/bin/python
# -*- coding:utf-8 -*-
import 网页链接 as GPIO
import time
def checkdist():
#发出触发信号
GPIO.output(2,GPIO.HIGH)
#保持10us以上（我选择15us）
time.sleep(0.000015)
GPIO.output(2,GPIO.LOW)
while not GPIO.input(3):
pass
#发现高电平时开时计时
t1 = time.time()
while GPIO.input(3):
pass
#高电平结束停止计时
t2 = time.time()
#返回距离，单位为米
return (t2-t1)*340/2
def beep():
print '有人靠近！！！'
GPIO.output(9,GPIO.LOW)
time.sleep(0.5)
GPIO.output(9,GPIO.HIGH)
time.sleep(0.5)
GPIO.setmode(GPIO.BCM)
#第3号针，GPIO2
GPIO.setup(2,GPIO.OUT,initial=GPIO.LOW)
#第5号针，GPIO3
GPIO.setup(3,GPIO.IN)
#第17号针，GPIO9
GPIO.setup(9,GPIO.OUT)
time.sleep(2)
try:
while True:
print '距离: %0.2f m' %checkdist()
if int(checkdist())<=1:
beep()
time.sleep(0.5)
except KeyboardInterrupt:
GPIO.cleanup()