εχω προσθεσει και play και pause και το LCD βγαζει αυτο τωρα....
τελικα διαβαζω απο το lcd.txt του Μοοδε , και δεν ξερω τι ειναι αυτες οι 3 γραμμες στο τελος
επισης δεν κανει σκρολ οταν ειναι κατι πανω απο 20 γραματα, πρεπει να ειναι λιγο δυσκολο να το κανεις
και ο κωδικας, που θελει καπια μαζεματακια ακομα μαλλον
#!/usr/bin/python
#
# Script for Raspberry Pi Internet Radio
#
# Author: Kyle Prier
# Site:
http://wwww.youtube.com/meistervision
#
# LCD author : Matt Hawkins
# Site :
http://www.raspberrypi-spy.co.uk/
#
# Date : 10/01/2012
#
# 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
import os
# Define GPIO to LCD mapping
LCD_RS = 7
LCD_E = 8
LCD_D4 = 25
LCD_D5 = 24
LCD_D6 = 23
LCD_D7 = 18
LED_ON = 15
# Defomte GPIO for Radio Controls
NEXT = 17
PREV = 4
PAUSE = 27
PLAY = 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
def main():
# Main program block
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
GPIO.setup(NEXT, GPIO.IN) # Next Channel button
GPIO.setup(PREV, GPIO.IN) # Previous Channel button
GPIO.setup(PAUSE, GPIO.IN) # Previous Channel button
GPIO.setup(PLAY, GPIO.IN) # Previous Channel button
# Initialise display
lcd_init()
# Send some test
lcd_byte(LCD_LINE_1, LCD_CMD)
lcd_string("KOROVIEV.COM",2)
lcd_byte(LCD_LINE_2, LCD_CMD)
lcd_string("AUDIO",2)
lcd_byte(LCD_LINE_3, LCD_CMD)
lcd_string("ENTERPRISES",2)
lcd_byte(LCD_LINE_4, LCD_CMD)
lcd_string("------------", 2)
time.sleep(8)
os.system("mpc play")
while 1:
if ( GPIO.input(NEXT) == False):
os.system("mpc next")
time.sleep(1)
os.system("mpc play")
if ( GPIO.input(PREV) == False):
os.system("mpc prev")
time.sleep(1)
os.system("mpc play")
if ( GPIO.input(PAUSE) == 0):
if (GPIO.input(PAUSE) == 1):
os.system("mpc play")
#time.sleep(0.05)
else:
os.system("mpc pause")
if ( GPIO.input(PLAY) == 0):
if (GPIO.input(PLAY) == 1):
os.system("mpc pause")
#time.sleep(0.05)
else:
os.system("mpc play")
# reading the MPD info
f=os.popen("mpc current")
station = ""
for i in f.readlines():
station += i
# reading the moode TXT file once for each line
with open('lcd.txt') as f:
for i, line2 in enumerate(f, 1):
if i == 2:
break
with open('lcd.txt') as f:
for i, line4 in enumerate(f, 1):
if i == 4:
break
with open('lcd.txt') as f:
for i, line9 in enumerate(f, 1):
if i == 9:
break
# Send lines to lcd
lcd_byte(LCD_LINE_1, LCD_CMD)
lcd_string(line2[7:27],1) # telling the program from which characters to read
lcd_byte(LCD_LINE_2, LCD_CMD)
lcd_string(line4[6:26],1)
lcd_byte(LCD_LINE_3, LCD_CMD)
lcd_string(" ",1)
lcd_byte(LCD_LINE_4, LCD_CMD)
lcd_string(line9[8:28],3)
time.sleep(20)
def lcd_init():
# Initialise display
lcd_byte(0x33,LCD_CMD)
lcd_byte(0x32,LCD_CMD)
lcd_byte(0x06,LCD_CMD)
lcd_byte(0x0C,LCD_CMD)
lcd_byte(0x28,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
),LCD_CHR)
def lcd_byte(bits, mode):
# Send byte to data pins
# bits = data
# mode = True for character
# False for command
GPI
utput(LCD_RS, mode) # RS
# High bits
GPIutput(LCD_D4, False)
GPIutput(LCD_D5, False)
GPIutput(LCD_D6, False)
GPIutput(LCD_D7, False)
if bits&0x10==0x10:
GPIutput(LCD_D4, True)
if bits&0x20==0x20:
GPIutput(LCD_D5, True)
if bits&0x40==0x40:
GPIutput(LCD_D6, True)
if bits&0x80==0x80:
GPIutput(LCD_D7, True)
# Toggle 'Enable' pin
time.sleep(E_DELAY)
GPIutput(LCD_E, True)
time.sleep(E_PULSE)
GPIutput(LCD_E, False)
time.sleep(E_DELAY)
# Low bits
GPIutput(LCD_D4, False)
GPIutput(LCD_D5, False)
GPIutput(LCD_D6, False)
GPIutput(LCD_D7, False)
if bits&0x01==0x01:
GPIutput(LCD_D4, True)
if bits&0x02==0x02:
GPIutput(LCD_D5, True)
if bits&0x04==0x04:
GPIutput(LCD_D6, True)
if bits&0x08==0x08:
GPIutput(LCD_D7, True)
# Toggle 'Enable' pin
time.sleep(E_DELAY)
GPIutput(LCD_E, True)
time.sleep(E_PULSE)
GPIutput(LCD_E, False)
time.sleep(E_DELAY)
if __name__ == '__main__':
main()
# try:
# main()
# except KeyboardInterrupt:
# pass
# finally:
# lcd_byte(0x01, LCD_CMD)
# lcd_string(" Goodbye!",LCD_LINE_1)
# GPIO.cleanup()
