init

playbooks/files/scripts/lcd_control.py

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+# Import LCD library
+from RPLCD import i2c
+import psutil
+import datetime
+import os
+from uptime import uptime
+# Import sleep library
+from time import sleep
+
+# constants to initialise the LCD
+lcdmode = 'i2c'
+cols = 20
+rows = 4
+charmap = 'A00'
+i2c_expander = 'PCF8574'
+
+# Generally 27 is the address;Find yours using: i2cdetect -y 1 
+address = 0x27 
+port = 0 # 0 on an older Raspberry Pi
+
+# Initialise the LCD
+lcd = i2c.CharLCD(i2c_expander, address, port=port, charmap=charmap,
+                  cols=cols, rows=rows)
+
+
+while True:
+    myCmd = ""
+    # Write a string on first line and move to next line
+    mem_data = psutil.virtual_memory()
+    net_sum = psutil.net_if_addrs()["eth0"]
+    eth0_ip = (net_sum[0][1])
+    cpu_load = round(psutil.getloadavg()[0],2)
+    uptime_s = int(uptime())
+    uptime_f = str(datetime.timedelta(seconds=uptime_s))
+    line1 = f'{"Mem: " + str(mem_data.percent): <20}'
+    line2 = f'{"IP : " + str(eth0_ip): <20}'
+    line4 = f'{"CPU: " + str(cpu_load): <20}'
+    print(cpu_load)
+    lcd.backlight_enabled =  True
+    lcd.cursor_pos = (0, 0)
+    lcd.write_string(line1)
+    lcd.crlf()
+    lcd.write_string(line2)
+    lcd.crlf()
+    lcd.write_string('Up : ' + str(uptime_f))
+    lcd.crlf()
+    lcd.write_string(line4)
+    sleep(5)
+    #lcd.clear()
+    # Switch off backlight
+    #lcd.backlight_enabled =  False
+    #sleep(3)
+    # Clear the LCD screen
+    #lcd.close(clear=True)