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43 lines
963 B
Python
43 lines
963 B
Python
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# Import LCD library
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from RPLCD import i2c
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import subprocess
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import sys
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import os
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pid = os.getpid()
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cmnd = "ps -ef|grep lcd_control|grep -v grep |grep -v {}|wc -l".format(pid)
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status, output = subprocess.getstatusoutput(cmnd)
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print(output)
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if int(output) > 0:
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print("Running already!")
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#sys.exit()
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# constants to initialise the LCD
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lcdmode = 'i2c'
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cols = 20
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rows = 4
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charmap = 'A00'
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i2c_expander = 'PCF8574'
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# Generally 27 is the address;Find yours using: i2cdetect -y 1
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address = 0x27
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port = 0 # 0 on an older Raspberry Pi
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# Initialise the LCD
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lcd = i2c.CharLCD(i2c_expander, address, port=port, charmap=charmap,
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cols=cols, rows=rows)
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line1 = f'{"####": <20}'
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line2 = f'{"Restarting.....": <20}'
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line3 = f'{"####": <20}'
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line4 = f'{"####": <20}'
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lcd.backlight_enabled = True
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lcd.cursor_pos = (0, 0)
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lcd.write_string(line1)
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lcd.crlf()
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lcd.write_string(line2)
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lcd.crlf()
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lcd.write_string(line3)
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lcd.crlf()
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lcd.write_string(line4)
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