added missing files

2026-05-21 21:34:11 +02:00 · 2016-12-01 00:16:11 +01:00
parent 68f9d7b21e
commit 62eee7a1ee
6 changed files with 1009 additions and 9 deletions
@@ -0,0 +1,289 @@
+#!/usr/bin/env python
+# -*- coding: latin-1 -*-
+#
+# $Id: lcd_class.py,v 1.27 2016/04/06 09:48:25 bob Exp $
+# Raspberry Pi Internet Radio
+# using an HD44780 LCD display
+#
+# Author : Bob Rathbone
+# Site   : http://www.bobrathbone.com
+#
+# From original LCD routines : Matt Hawkins
+# Site   : http://www.raspberrypi-spy.co.uk
+# Timing improvements fromobert Coward/Paul Carpenter
+# Site   : http://www.raspberrypi-spy.co.uk
+#          http://www.pcserviceslectronics.co.uk
+#
+# Expanded to use 4 x 20  display
+#
+# This program uses  Music Player Daemon 'mpd'and it's client 'mpc'
+# See http://mpd.wikia.com/wiki/Music_Player_Daemon_Wiki
+#
+# License: GNU V3, See https://www.gnu.org/copyleft/gpl.html
+#
+# Disclaimer: Software is provided as is and absolutly no warranties are implied or given.
+#             The authors shall not be liable for any loss or damage however caused.
+#
+
+import os
+import time
+import RPi.GPIO as GPIO
+from translate_class import Translate
+from config_class import Configuration
+from lcdproc.server import Server
+
+server=Server()
+
+# 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
+# 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
+
+# Define GPIO to LCD mapping
+##LCD_RS = 7
+##LCD_E  = 8
+##LCD_D4_21 = 21    # Rev 1 Board
+##LCD_D4_27 = 27    # Rev 2 Board
+##LCD_D5 = 22
+##LCD_D6 = 23
+##LCD_D7 = 24
+#lcd_bri = 10	# Brightness control (Pecus)
+
+# Define LCD device constants
+LCD_WIDTH = 20    # Default characters per line
+##LCD_CHR = True
+##LCD_CMD = False
+
+LCD_LINE_1 = 1
+LCD_LINE_2 = 2
+LCD_LINE_3 = 3
+LCD_LINE_4 = 4
+
+# Some LCDs use different addresses (16 x 4 line LCDs)
+# Comment out the above two lines and uncomment the two lines below
+# LCD_LINE_3 = 0x90 # LCD RAM address for the 3rd line
+# LCD_LINE_4 = 0xD0 # LCD RAM address for the 4th line
+
+# If using a 4 x 16 display also amend the lcd.setWidth(<width>) statement in rradio4.py
+
+# Timing constants
+
+translate = Translate()
+
+# Temporary files for displayed text. /tmp is a tempfs in RAM (Pecus)
+# Remember! If you don't want to kill your SD card, add line in /etc/fstab : (Pecus)
+# 'tmpfs     /tmp      /tmpfs    size=10M,noatime   0  0'  (Pecus)
+Line1File = "/tmp/radiod/line1.txt"  # (Pecus)
+Line2File = "/tmp/radiod/line2.txt"  # (Pecus)
+Line3File = "/tmp/radiod/line3.txt"  # (Pecus)
+Line4File = "/tmp/radiod/line4.txt"  # (Pecus)
+
+
+# Lcd Class 
+class Lcd_lcdproc:
+	width = LCD_WIDTH
+	# If display can support umlauts set to True else False
+        RawMode = False         # Test only
+        ScrollSpeed = 0.25       # Default scroll speed
+
+	def __init__(self):
+		# Create files for displayed texts (Pecus)
+		if not os.path.isdir("/tmp/radiod/"): # (Pecus)
+			os.mkdir ("/tmp/radiod/") # (Pecus)
+		self.writeToFile (Line1File,"1") # (Pecus)
+		self.writeToFile (Line2File,"2") # (Pecus)
+		self.writeToFile (Line3File,"3") # (Pecus)
+		self.writeToFile (Line4File,"4") # (Pecus)
+		return
+
+	# Initialise for either revision 1 or 2 boards
+	def init(self,boardRevision):
+
+		self.lcd_init()
+		return
+
+	# Initialise the display
+	def lcd_init(self):
+		# INIT
+		server.start_session()
+		self.screen = server.add_screen("Screen")
+		self.screen.set_heartbeat("off")
+		self.screen.set_duration(5)
+		self.line1_widget = self.screen.add_scroller_widget("MyStringWidget1", text="01234567890123456789",speed=2)
+		self.line2_widget = self.screen.add_scroller_widget("MyStringWidget2", text="11234567890123456789",speed=2)
+		self.line3_widget = self.screen.add_scroller_widget("MyStringWidget3", text="21234567890123456789",speed=2)
+		self.line4_widget = self.screen.add_scroller_widget("MyStringWidget4", text="31234567890123456789",speed=2)
+		self.line1_widget.set_top(1);
+		self.line2_widget.set_top(2);
+		self.line3_widget.set_top(3);
+		self.line4_widget.set_top(4);
+		self.line1_widget.set_left(1);
+		self.line2_widget.set_left(1);
+		self.line3_widget.set_left(1);
+		self.line4_widget.set_left(1);
+		self.line1_widget.set_direction("m");
+		self.line2_widget.set_direction("m");
+		self.line3_widget.set_direction("m");
+		self.line4_widget.set_direction("m");
+		#time.sleep(0.3)		     # Allow to settle before using
+		return
+	 
+	# Set the display width
+	def setWidth(self,width):
+		self.width = width
+		return
+
+	# Send string to display
+	def _string(self,message,line,speed):
+		s = message.ljust(self.width," ")
+		if not self.RawMode:
+			s = translate.toLCD(s)
+		if len(s)<=20:
+			speed=0
+
+		if speed==0:
+			s=s[0:19]
+		else:
+			s=s[0:160]+"      "
+
+
+		# SET TEXT
+		if line==1:
+			self.line1_widget.set_text(s)
+			self.line1_widget.set_speed(speed)
+		elif line==2:
+			self.line2_widget.set_text(s)
+			self.line2_widget.set_speed(speed)
+		elif line==3:
+			self.line3_widget.set_text(s)
+			self.line3_widget.set_speed(speed)
+		else:
+			self.line4_widget.set_text(s)
+			self.line4_widget.set_speed(speed)
+		return
+
+	# Display Line 1 on LED
+	def line1(self,text):
+		self.writeToFile (Line1File,text) # (Pecus)
+		# WRITE LINE 1
+		self._string(text,1,0)
+		return
+
+	# Display Line 2 on LED
+	def line2(self,text):
+		self.writeToFile (Line2File,text) # (Pecus)
+		# WRITE LINE 2
+		self._string(text,2,0)
+		return
+
+	# Display Line 3 on LED
+	def line3(self,text):
+		self.writeToFile (Line3File,text) # (Pecus)
+		# WRITE LINE 3
+		self._string(text,3,0)
+		return
+
+	# Display Line 4 on LED
+	def line4(self,text):
+		self.writeToFile (Line4File,text) # (Pecus)
+		# WRITE LINE 4
+		self._string(text,4,0)
+		return
+
+	# Scroll message on line 1
+	def scroll1(self,mytext,interrupt):
+		self.writeToFile (Line1File,mytext) # (Pecus)
+		self._scroll(mytext,LCD_LINE_1,interrupt)
+		return
+
+	# Scroll message on line 2
+	def scroll2(self,mytext,interrupt):
+		self.writeToFile (Line2File,mytext) # (Pecus)
+		self._scroll(mytext,LCD_LINE_2,interrupt)
+		return
+
+	# Scroll message on line 3
+	def scroll3(self,mytext,interrupt):
+		self.writeToFile (Line3File,mytext) # (Pecus)
+		self._scroll(mytext,LCD_LINE_3,interrupt)
+		return
+
+	# Scroll message on line 4
+	def scroll4(self,mytext,interrupt):
+		self.writeToFile (Line4File,mytext) # (Pecus)
+		self._scroll(mytext,LCD_LINE_4,interrupt)
+		return
+
+	# Scroll line - interrupt() breaks out routine if True
+	def _scroll(self,mytext,line,interrupt):
+
+		# WRITE PARTICULAR LINE line
+		self._string(mytext,line,2)
+		print "SCROLL: " + mytext
+		return
+
+	# Set Scroll line speed - Best values are 0.2 and 0.3
+	# Limit to between 0.05 and 1.0
+	def setScrollSpeed(self,speed):
+		#print "SCROLL SPEED: "+str(speed)
+		if speed < 0.1:
+			speed = 0.2
+		elif speed > 1.0:
+			speed = 0.3
+		self.ScrollSpeed = speed
+		speed=int(speed*10)
+		#self.line1_widget.set_speed(speed)
+		#self.line2_widget.set_speed(speed)
+		#self.line3_widget.set_speed(speed)
+		#self.line4_widget.set_speed(speed)
+		return
+
+	# Set raw mode on (No translation)
+	def setRawMode(self,value):
+		self.RawMode = value
+		return
+
+	# Clear display
+	def clearDisplay(self):
+		self.writeToFile (Line1File,"") # (Pecus)
+		self.writeToFile (Line2File,"") # (Pecus)
+		self.writeToFile (Line3File,"") # (Pecus)
+		self.writeToFile (Line4File,"") # (Pecus)
+		# CLEAR DISPLAY
+		self._string("                    ",1)
+		self._string("                    ",2)
+		self._string("                    ",3)
+		self._string("                    ",4)
+		time.sleep(E_POSTCLEAR)
+		return
+
+	# Set brightness (Pecus)
+	def setBright(self,value):
+		#GPIO.output(lcd_bri, value)
+		if value :
+			self.screen.set_backlight("on")
+		else:
+			self.screen.set_backlight("off")
+		return
+
+	# Write text to file (Pecus)
+	def writeToFile(self,fname,text): # (Pecus)
+		file = open(fname, "w") # (Pecus)
+		file.write(text) # (Pecus)
+		file.close() # (Pecus)
+		return # (Pecus)
+
+# End of Lcd_lcdproc class