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问编写脚本以在Python中运行多个脚本
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Stack Overflow用户

提问于 2017-10-14 20:13:30

回答 2查看 1K关注 0票数 0

我正在做一个闹钟项目。谁能告诉我如何编写一个脚本来调用所有其他脚本。例如，我的树莓pi上有三个脚本，名为LCDTESTFORPI.py，另一个脚本名为“ex_7segmentLED.py”，第三个脚本名为“alarmpi.py”。我想要的是能够运行一个名为“alarmpi_init.py”的脚本，它将运行所有其他脚本，然后可以设置为在启动时运行。我知道这是有可能的，只是我不知道该怎么写。

以前，有人建议我应该使用正确的格式，将所有这些放入一个脚本的函数中，但我不知道如何做到这一点。

下面是提到的代码的副本：

LCDTESTFORPI.py

    #!/usr/bin/python
#
# HD44780 20x4 RGB LCD Test Script for
# Raspberry Pi
# 
# Adapted by: Kyle Prier
# Site: http://wwww.youtube.com/meistervision
# 
# Original Author : Matt Hawkins
# Site   : http://www.raspberrypi-spy.co.uk/
# 
# Date   : 09/08/2012
#

# The wiring for the LCD is as follows:
# 1 : GND
# 2 : 5V
# 3 : Contrast (0-5V)*
# 4 : RS (Register Select)
# 5 : R/W (Read Write)       - GROUND THIS PIN! We do not want the LCD to send anything to the Pi @ 5v
# 6 : Enable or Strobe
# 7 : Data Bit 0             - NOT USED
# 8 : Data Bit 1             - NOT USED
# 9 : Data Bit 2             - NOT USED
# 10: Data Bit 3             - NOT USED
# 11: Data Bit 4
# 12: Data Bit 5
# 13: Data Bit 6
# 14: Data Bit 7
# 15: LCD Backlight +5V
# 16: LCD Backlight GND (Red)
# 17: LCD Backlight GND (Green)
# 18: LCD Backlight GND (Blue)

#import
import RPi.GPIO as GPIO
import time

# Define GPIO to LCD mapping
LCD_RS = 25
LCD_E  = 24
LCD_D4 = 23
LCD_D5 = 17
LCD_D6 = 27
LCD_D7 = 22


# Define some device constants
LCD_WIDTH = 20    # Maximum characters per line
LCD_CHR = True
LCD_CMD = False

LCD_LINE_1 = 0x80 # LCD RAM address for the 1st line
LCD_LINE_2 = 0xC0 # LCD RAM address for the 2nd line
LCD_LINE_3 = 0x94 # LCD RAM address for the 3rd line
LCD_LINE_4 = 0xD4 # LCD RAM address for the 4th line 

# Timing constants
E_PULSE = 0.0005
E_DELAY = 0.0005

daynames = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]
monthnames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]

def ordinal(value):
    try:
        value = int(value)
    except ValueError:
        return value

    if value % 100//10 != 1:
        remainder = value % 10
        if remainder == 1:
            ordval = u"%d%s" % (value, "st")
        elif remainder == 2:
            ordval = u"%d%s" % (value, "nd")
        elif remainder  == 3:
            ordval = u"%s%s" % (value, "rd")
        else:
            ordval = u"%d%s" % (value, "th")
    else:
        ordval = u"%d%s" % (value, "th")
    return ordval

def main():
  # Main program block
  GPIO.setwarnings(False)
  GPIO.setmode(GPIO.BCM)       # Use BCM GPIO numbers
  GPIO.setup(LCD_E, GPIO.OUT)  # E
  GPIO.setup(LCD_RS, GPIO.OUT) # RS
  GPIO.setup(LCD_D4, GPIO.OUT) # DB4
  GPIO.setup(LCD_D5, GPIO.OUT) # DB5
  GPIO.setup(LCD_D6, GPIO.OUT) # DB6
  GPIO.setup(LCD_D7, GPIO.OUT) # DB7

  # Initialise display
  lcd_init()


  # Send some centred test
  lcd_byte(LCD_LINE_1, LCD_CMD)
  lcd_string("--------------------",2) 
  lcd_byte(LCD_LINE_2, LCD_CMD)
  lcd_string("AlarmPi Mk2",2)
  lcd_byte(LCD_LINE_3, LCD_CMD)
  lcd_string("Starting up...",2)
  lcd_byte(LCD_LINE_4, LCD_CMD)
  lcd_string("--------------------",2)    

  time.sleep(5) # 5 second delay 

  while True:
    lcd_byte(LCD_LINE_1, LCD_CMD)
    lcd_string("Wakey Wakey!",2)
    lcd_byte(LCD_LINE_2, LCD_CMD)
    lcd_string(time.strftime("%H:%M:%S"),2)  
    lcd_byte(LCD_LINE_3, LCD_CMD)
    day_index = int(time.strftime("%w"))
    lcd_string(daynames[day_index],2) 
    lcd_byte(LCD_LINE_4, LCD_CMD)
    mon_index = int(time.strftime("%m"))
    lcd_string(ordinal(int(time.strftime("%d"))) + " " + monthnames[mon_index] + " " + time.strftime("%Y"),2)
    time.sleep(1)

  time.sleep(30) # 30 second delay 

  # Clear display
  lcd_byte(LCD_LINE_1, LCD_CMD)
  lcd_string("",3)
  lcd_byte(LCD_LINE_2, LCD_CMD)
  lcd_string("",3)  
  lcd_byte(LCD_LINE_3, LCD_CMD)
  lcd_string("",2) 
  lcd_byte(LCD_LINE_4, LCD_CMD)
  lcd_string("",2)    

  time.sleep(3) # 3 second delay  


def lcd_init():
  # Initialise display
  lcd_byte(0x33,LCD_CMD)
  lcd_byte(0x32,LCD_CMD)
  lcd_byte(0x28,LCD_CMD)
  lcd_byte(0x0C,LCD_CMD)  
  lcd_byte(0x06,LCD_CMD)
  lcd_byte(0x01,LCD_CMD)  

def lcd_string(message,style):
  # Send string to display
  # style=1 Left justified
  # style=2 Centred
  # style=3 Right justified

  if style==1:
    message = message.ljust(LCD_WIDTH," ")  
  elif style==2:
    message = message.center(LCD_WIDTH," ")
  elif style==3:
    message = message.rjust(LCD_WIDTH," ")

  for i in range(LCD_WIDTH):
    lcd_byte(ord(message[i]),LCD_CHR)

def lcd_byte(bits, mode):
  # Send byte to data pins
  # bits = data
  # mode = True  for character
  #        False for command

  GPIO.output(LCD_RS, mode) # RS

  # High bits
  GPIO.output(LCD_D4, False)
  GPIO.output(LCD_D5, False)
  GPIO.output(LCD_D6, False)
  GPIO.output(LCD_D7, False)
  if bits&0x10==0x10:
    GPIO.output(LCD_D4, True)
  if bits&0x20==0x20:
    GPIO.output(LCD_D5, True)
  if bits&0x40==0x40:
    GPIO.output(LCD_D6, True)
  if bits&0x80==0x80:
    GPIO.output(LCD_D7, True)

  # Toggle 'Enable' pin
  time.sleep(E_DELAY)    
  GPIO.output(LCD_E, True)  
  time.sleep(E_PULSE)
  GPIO.output(LCD_E, False)  
  time.sleep(E_DELAY)      

  # Low bits
  GPIO.output(LCD_D4, False)
  GPIO.output(LCD_D5, False)
  GPIO.output(LCD_D6, False)
  GPIO.output(LCD_D7, False)
  if bits&0x01==0x01:
    GPIO.output(LCD_D4, True)
  if bits&0x02==0x02:
    GPIO.output(LCD_D5, True)
  if bits&0x04==0x04:
    GPIO.output(LCD_D6, True)
  if bits&0x08==0x08:
    GPIO.output(LCD_D7, True)

  # Toggle 'Enable' pin
  time.sleep(E_DELAY)    
  GPIO.output(LCD_E, True)  
  time.sleep(E_PULSE)
  GPIO.output(LCD_E, False)  
  time.sleep(E_DELAY)   

if __name__ == '__main__':
  main()

GPIO.cleanup()

这是ex_7segmentclock.py的一个副本

#!/usr/bin/python

import time
import datetime

from Adafruit_LED_Backpack import SevenSegment

# ===========================================================================
# Clock Example
# ===========================================================================
segment = SevenSegment.SevenSegment(address=0x70)

# Initialize the display. Must be called once before using the display.
segment.begin()

print "Press CTRL+Z to exit"

# Continually update the time on a 4 char, 7-segment display
while(True):
  now = datetime.datetime.now()
  hour = now.hour
  minute = now.minute
  second = now.second

  segment.clear()
  # Set hours
  segment.set_digit(0, int(hour / 10))     # Tens
  segment.set_digit(1, hour % 10)          # Ones
  # Set minutes
  segment.set_digit(2, int(minute / 10))   # Tens
  segment.set_digit(3, minute % 10)        # Ones
  # Toggle colon
  segment.set_colon(second % 2)              # Toggle colon at 1Hz

  # Write the display buffer to the hardware.  This must be called to
  # update the actual display LEDs.
  segment.write_display()

  # Wait a quarter second (less than 1 second to prevent colon blinking getting$
  time.sleep(0.25)

不幸的是，我无法打开另外两个代码文件，因为一个是.config文件，另一个当前正在从国家不同地区的设备上运行。但这里显示的两个代码文件是我想在这篇文章中使用的两个文件。

python

function

shell

boot

回答 2

Stack Overflow用户

发布于 2017-10-14 20:18:14

如果所有文件都驻留在同一目录中，这可能是alarmpi_init.py的一种实现

import LCDTESTFORPI
LCDTESTFORPI.main()

import ex_7segmentLED
import alarmpi

这将按该顺序执行所有三个脚本。请注意，使用if __name__ == '__main__'的脚本需要显式调用其main方法，而没有此部分的脚本将在没有它的情况下工作。

票数 0

Stack Overflow用户

发布于 2017-10-14 20:18:41

您是否尝试过使用以下命令创建一个名为alarm_init.sh的文件：

#!/bin/bash
cd /my/working/directory/
./script1.py  # you can add arguments space separated.
./script2.py
./script3.py

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/46744404

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