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#!/usr/bin/env python
#
# GrovePi Example for using the Grove - LCD RGB Backlight (http://www.seeedstudio.com/wiki/Grove_-_LCD_RGB_Backlight)
#
# The GrovePi connects the Raspberry Pi and Grove sensors. You can learn more about GrovePi here: http://www.dexterindustries.com/GrovePi
#
# Have a question about this example? Ask on the forums here: http://forum.dexterindustries.com/c/grovepi
#
'''
## License
The MIT License (MIT)
GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
Copyright (C) 2017 Dexter Industries
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
'''
from grove_rgb_lcd import *
setText("Hello world\nLCD test")
setRGB(0,128,64)
# Slowly change the colors every 0.01 seconds.
for c in range(0,255):
setRGB(c,255-c,0)
time.sleep(0.01)
setRGB(0,255,0)
setText("Bye bye, this should wrap")

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#!/usr/bin/env python
#
# GrovePi Example for using the Grove - LCD RGB Backlight (http://www.seeedstudio.com/wiki/Grove_-_LCD_RGB_Backlight)
#
# The GrovePi connects the Raspberry Pi and Grove sensors. You can learn more about GrovePi here: http://www.dexterindustries.com/GrovePi
#
# Have a question about this example? Ask on the forums here: http://forum.dexterindustries.com/c/grovepi
#
'''
## License
The MIT License (MIT)
GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
Copyright (C) 2017 Dexter Industries
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
'''
from grove_rgb_lcd import *
import random
try:
setRGB(0,255,0)
setText("Grove - LCD RGB Backlight")
time.sleep(2)
setText("Hello World")
time.sleep(2)
setText("Random colors")
for i in range(0,51):
setRGB(random.randint(0,255),random.randint(0,255),random.randint(0,255))
time.sleep(.1)
time.sleep(1)
# ascii char 255 is the cursor character
setRGB(255,255,255)
setText(chr(255)*32)
time.sleep(2)
# typewriter
setRGB(255,127,0)
str = "Hello World"
for i in range(0,12):
setText(str[:i])
time.sleep(.2)
time.sleep(2)
setRGB(255,0,255)
setText("1234567890ABCDEF1234567890ABCDEF")
time.sleep(2)
setText("Long strings will be truncated at 32 chars")
time.sleep(2)
setRGB(0,255,0)
setText("Automatic word wrapping")
time.sleep(2)
setText("Manual\nword wrapping")
time.sleep(2)
setRGB(0,255,255)
setText("ASCII printable and extended")
time.sleep(2)
chars = ""
for a in range(32,256):
chars += chr(a)
if len(chars) == 32:
setText(chars)
chars = ""
time.sleep(2)
setRGB(0,255,0)
setText("Solid colors")
time.sleep(2)
setText("Red")
setRGB(255,0,0)
time.sleep(.5)
setText("Green")
setRGB(0,255,0)
time.sleep(.5)
setText("Blue")
setRGB(0,0,255)
time.sleep(.5)
setText("Yellow")
setRGB(255,255,0)
time.sleep(.5)
setText("Magenta")
setRGB(255,0,255)
time.sleep(.5)
setText("Cyan")
setRGB(0,255,255)
time.sleep(.5)
setText("White")
setRGB(255,255,255)
time.sleep(.5)
setText("Black")
setRGB(0,0,0)
time.sleep(.5)
setText("Grey")
setRGB(127,127,127)
time.sleep(.5)
setRGB(255,255,255)
setText("Alphanumeric characters")
time.sleep(2)
setText("1234567890ABCDEF1234567890ABCDEF")
time.sleep(2)
setText("ABCDEFGHIJKLMNOPQRSTUVWXYZ")
time.sleep(2)
setText("abcdefghijklmnopqrstuvwxyz")
time.sleep(2)
setText("1234567890")
time.sleep(2)
setText("Shades of red")
for c in range(0,255):
setRGB(255,255-c,255-c)
time.sleep(.01)
setText("Shades of green")
for c in range(0,255):
setRGB(255-c,255,255-c)
time.sleep(.01)
setText("Shades of blue")
for c in range(0,255):
setRGB(255-c,255-c,255)
time.sleep(.01)
setText("Shades of yellow")
for c in range(0,255):
setRGB(255,255,255-c)
time.sleep(.01)
setText("Shades of magenta")
for c in range(0,255):
setRGB(255,255-c,255)
time.sleep(.01)
setText("Shades of cyan")
for c in range(0,255):
setRGB(255-c,255,255)
time.sleep(.01)
setText("Shades of grey")
for c in range(0,255):
setRGB(c,c,c)
time.sleep(.01)
except KeyboardInterrupt:
setText("KeyboardInterrupt")
setRGB(255,0,0)
except IOError:
setText("IOError")
setRGB(255,0,0)
time.sleep(1)
setText("All done")
setRGB(0,255,0)

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#!/usr/bin/env python
#
# GrovePi Example for using the Grove - LCD RGB Backlight without erasing the screen(http://www.seeedstudio.com/wiki/Grove_-_LCD_RGB_Backlight)
#
# The GrovePi connects the Raspberry Pi and Grove sensors. You can learn more about GrovePi here: http://www.dexterindustries.com/GrovePi
#
# Have a question about this example? Ask on the forums here: http://forum.dexterindustries.com/c/grovepi
#
'''
## License
The MIT License (MIT)
GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
Copyright (C) 2017 Dexter Industries
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
'''
from grove_rgb_lcd import *
import time
setRGB(0,255,0)
buf=list("Grove -Update without erase")
setText("".join(buf))
time.sleep(1)
for i in range(len(buf)):
buf[i]="."
setText_norefresh("".join(buf))
time.sleep(.1)

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#!/usr/bin/env python
#
# GrovePi Example for using the Grove - LCD RGB Backlight (http://www.seeedstudio.com/wiki/Grove_-_LCD_RGB_Backlight)
#
# The GrovePi connects the Raspberry Pi and Grove sensors. You can learn more about GrovePi here: http://www.dexterindustries.com/GrovePi
#
# Have a question about this example? Ask on the forums here: http://forum.dexterindustries.com/c/grovepi
#
# History
# ------------------------------------------------
# Author Date Comments
# Initial Authoring
# Karan 7 Jan 16 Library updated to add a function to update the text without erasing the screen
# Released under the MIT license (http://choosealicense.com/licenses/mit/).
# For more information see https://github.com/DexterInd/GrovePi/blob/master/LICENSE
#
# NOTE:
# Just supports setting the backlight colour, and
# putting a single string of text onto the display
# Doesn't support anything clever, cursors or anything
import time,sys
if sys.platform == 'uwp':
import winrt_smbus as smbus
bus = smbus.SMBus(1)
else:
import smbus
import RPi.GPIO as GPIO
rev = GPIO.RPI_REVISION
if rev == 2 or rev == 3:
bus = smbus.SMBus(1)
else:
bus = smbus.SMBus(0)
# this device has two I2C addresses
DISPLAY_RGB_ADDR = 0x62
DISPLAY_TEXT_ADDR = 0x3e
# set backlight to (R,G,B) (values from 0..255 for each)
def setRGB(r,g,b):
bus.write_byte_data(DISPLAY_RGB_ADDR,0,0)
bus.write_byte_data(DISPLAY_RGB_ADDR,1,0)
bus.write_byte_data(DISPLAY_RGB_ADDR,0x08,0xaa)
bus.write_byte_data(DISPLAY_RGB_ADDR,4,r)
bus.write_byte_data(DISPLAY_RGB_ADDR,3,g)
bus.write_byte_data(DISPLAY_RGB_ADDR,2,b)
# send command to display (no need for external use)
def textCommand(cmd):
bus.write_byte_data(DISPLAY_TEXT_ADDR,0x80,cmd)
# set display text \n for second line(or auto wrap)
def setText(text):
textCommand(0x01) # clear display
time.sleep(.05)
textCommand(0x08 | 0x04) # display on, no cursor
textCommand(0x28) # 2 lines
time.sleep(.05)
count = 0
row = 0
for c in text:
if c == '\n' or count == 16:
count = 0
row += 1
if row == 2:
break
textCommand(0xc0)
if c == '\n':
continue
count += 1
bus.write_byte_data(DISPLAY_TEXT_ADDR,0x40,ord(c))
#Update the display without erasing the display
def setText_norefresh(text):
textCommand(0x02) # return home
time.sleep(.05)
textCommand(0x08 | 0x04) # display on, no cursor
textCommand(0x28) # 2 lines
time.sleep(.05)
count = 0
row = 0
while len(text) < 32: #clears the rest of the screen
text += ' '
for c in text:
if c == '\n' or count == 16:
count = 0
row += 1
if row == 2:
break
textCommand(0xc0)
if c == '\n':
continue
count += 1
bus.write_byte_data(DISPLAY_TEXT_ADDR,0x40,ord(c))
# Create a custom character (from array of row patterns)
def create_char(location, pattern):
"""
Writes a bit pattern to LCD CGRAM
Arguments:
location -- integer, one of 8 slots (0-7)
pattern -- byte array containing the bit pattern, like as found at
https://omerk.github.io/lcdchargen/
"""
location &= 0x07 # Make sure location is 0-7
textCommand(0x40 | (location << 3))
bus.write_i2c_block_data(DISPLAY_TEXT_ADDR, 0x40, pattern)
# example code
if __name__=="__main__":
setText("Hello world\nThis is an LCD test")
setRGB(0,128,64)
time.sleep(2)
for c in range(0,255):
setText_norefresh("Going to sleep in {}...".format(str(c)))
setRGB(c,255-c,0)
time.sleep(0.1)
setRGB(0,255,0)
setText("Bye bye, this should wrap onto next line")