Create LCD_ DataTable.py

Author: rainierez

Adafruit_CharLCDPlate/LCD_ DataTable.py

@@ -0,0 +1,128 @@
+#!/usr/bin/python
+#----------------------------------------------------------------
+# Author: Chris Crumpacker                               
+# Date: May 2013
+#
+# Testing a data table on an 20x4 LCD, 
+# using a RaspberyPi and an MCP23017 I2C port expander
+# 
+# Using Adafruit_CharLCD code with the I2C and MCP230xx code as well
+#----------------------------------------------------------------
+
+from time import sleep
+from Adafruit_CharLCDPlate import Adafruit_CharLCDPlate
+from EoL_HandlingAnd4LineSupport import LCD_EoL_Handling
+
+class LCD_DataTable(Adafruit_CharLCDPlate):
+    # Limited to 4 characters, 
+    # position is left or right, 
+    # line is 1-4
+    def labelHalf(self, text, position, line):
+        if position == "left":
+            lcd.setCursor(0,line)
+            eol.message("    :")
+            lcd.setCursor(0,line)
+            eol.message(text[0:4]+':')        
+        elif position == "right":
+            lcd.setCursor(10,line)
+            eol.message("    :")
+            lcd.setCursor(10,line)
+            eol.message('|'+text[0:4]+':')
+            
+    # Limited to 4 characters, 
+    # position is left or right, 
+    # line is 1-4
+    def valueHalf(self, text, position, line):
+        if position == "left":
+            lcd.setCursor(5,line)
+            eol.message("    ")
+            lcd.setCursor(5,line)
+            eol.message(text[0:4])        
+        elif position == "right":
+            lcd.setCursor(16,line)
+            eol.message("    ")
+            lcd.setCursor(16,line)
+            eol.message(text[0:4])
+    
+    # Writes up to a 9 character lable and value to a full line
+    def wholeLine(self, label, value, line):
+        self.clearLine(line)
+        lcd.setCursor(0,line)
+        eol.message(label[0:10] + ': ')
+        lcd.setCursor(11,line)
+        eol.message(value[0:10])
+    
+    #Clears an entire line
+    def clearLine(self, line):
+        lcd.setCursor(0,line)
+        eol.message(" " * columns)
+        
+    # Clears just a half data set, label and value   
+    def clearDataSet(self, position,line):
+        if position == "left":
+            lcd.setCursor(0,line)
+            eol.message(" " * 10)
+        elif position == "right":
+            lcd.setCursor(10,line)
+            eol.message(" " * 10)
+    
+    # Clears just the value portion for a half data set
+    def clearHalfValue(self, position,line):
+        if position == "left":
+            lcd.setCursor(5,line)
+            eol.message("    ")      
+        elif position == "right":
+            lcd.setCursor(16,line)
+            eol.message("    ")
+
+#----------------------------------------------------------------
+# Main program, just trowing bogus data "against the wall"
+#----------------------------------------------------------------
+if __name__ == '__main__':
+    
+    #lcd size reference
+    columns = 20
+    rows = 4
+    
+    eol = LCD_EoL_Handling()
+    lcd = Adafruit_CharLCDPlate()
+    dt = LCD_DataTable()
+    
+    lcd.begin(columns, rows)
+    lcd.backlight(lcd.ON)
+    lcd.clear()
+    
+    lcd.message("20x4 Table Testing")
+    sleep(2)
+    
+    #Filling the table with bogus info
+    lcd.clear()
+    dt.labelHalf("Temp","left",0)
+    dt.labelHalf("Mode","right",0)
+    dt.labelHalf("Targ","left",1)
+    dt.labelHalf("Fan","right",1)
+    dt.valueHalf("Cool","right",0)
+    dt.valueHalf("75.5","left",0)
+    dt.valueHalf("Auto","right",1)
+    dt.valueHalf("74.0","left",1)
+    dt.wholeLine("Tempurature", "Too Hot",2)
+    
+    #Start testing updating and clearing parts
+    sleep(5)
+    dt.clearLine(0)
+    sleep(2)
+    dt.labelHalf("Temp","left",0)
+    dt.valueHalf("76.0","left",0)
+    sleep(2)
+    dt.valueHalf("74.75","left",0)
+    sleep(2)
+    dt.labelHalf("Mode","right",0)
+    dt.valueHalf("Both","right",0)
+    sleep(2)
+    dt.valueHalf("On","right",0)
+    sleep(2)
+    dt.clearDataSet("left",0)
+    sleep(2)
+    dt.labelHalf("Tempurature","left",0)
+    dt.valueHalf("85","left",0)
+    sleep(5)