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grove_oled_display_128x64.py
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grove_oled_display_128x64.py
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#!/usr/bin/env python
#
# This library is for Grove - OLED Display 0.96"(https://www.seeedstudio.com/Grove-OLED-Display-0.96%22-p-781.html)
#
# This is the library for Grove Base Hat which used to connect grove sensors for raspberry pi.
#
'''
## License
The MIT License (MIT)
Grove Base Hat for the Raspberry Pi, used to connect grove sensors.
Copyright (C) 2018 Seeed Technology Co.,Ltd.
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.
'''
import time
from grove.i2c import Bus
_COMMAND_MODE = 0x80
_DATA_MODE = 0x40
_NORMAL_DISPLAY = 0xA6
_DISPLAY_OFF = 0xAE
_DISPLAY_ON = 0xAF
_INVERSE_DISPLAY = 0xA7
_SET_BRIGHTNESS = 0x81
BasicFont = [[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x5F, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x07, 0x00, 0x07, 0x00, 0x00, 0x00],
[0x00, 0x14, 0x7F, 0x14, 0x7F, 0x14, 0x00, 0x00],
[0x00, 0x24, 0x2A, 0x7F, 0x2A, 0x12, 0x00, 0x00],
[0x00, 0x23, 0x13, 0x08, 0x64, 0x62, 0x00, 0x00],
[0x00, 0x36, 0x49, 0x55, 0x22, 0x50, 0x00, 0x00],
[0x00, 0x00, 0x05, 0x03, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x1C, 0x22, 0x41, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x41, 0x22, 0x1C, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x08, 0x2A, 0x1C, 0x2A, 0x08, 0x00, 0x00],
[0x00, 0x08, 0x08, 0x3E, 0x08, 0x08, 0x00, 0x00],
[0x00, 0xA0, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00],
[0x00, 0x60, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x20, 0x10, 0x08, 0x04, 0x02, 0x00, 0x00],
[0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E, 0x00, 0x00],
[0x00, 0x00, 0x42, 0x7F, 0x40, 0x00, 0x00, 0x00],
[0x00, 0x62, 0x51, 0x49, 0x49, 0x46, 0x00, 0x00],
[0x00, 0x22, 0x41, 0x49, 0x49, 0x36, 0x00, 0x00],
[0x00, 0x18, 0x14, 0x12, 0x7F, 0x10, 0x00, 0x00],
[0x00, 0x27, 0x45, 0x45, 0x45, 0x39, 0x00, 0x00],
[0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30, 0x00, 0x00],
[0x00, 0x01, 0x71, 0x09, 0x05, 0x03, 0x00, 0x00],
[0x00, 0x36, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00],
[0x00, 0x06, 0x49, 0x49, 0x29, 0x1E, 0x00, 0x00],
[0x00, 0x00, 0x36, 0x36, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0xAC, 0x6C, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x08, 0x14, 0x22, 0x41, 0x00, 0x00, 0x00],
[0x00, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00, 0x00],
[0x00, 0x41, 0x22, 0x14, 0x08, 0x00, 0x00, 0x00],
[0x00, 0x02, 0x01, 0x51, 0x09, 0x06, 0x00, 0x00],
[0x00, 0x32, 0x49, 0x79, 0x41, 0x3E, 0x00, 0x00],
[0x00, 0x7E, 0x09, 0x09, 0x09, 0x7E, 0x00, 0x00],
[0x00, 0x7F, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00],
[0x00, 0x3E, 0x41, 0x41, 0x41, 0x22, 0x00, 0x00],
[0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C, 0x00, 0x00],
[0x00, 0x7F, 0x49, 0x49, 0x49, 0x41, 0x00, 0x00],
[0x00, 0x7F, 0x09, 0x09, 0x09, 0x01, 0x00, 0x00],
[0x00, 0x3E, 0x41, 0x41, 0x51, 0x72, 0x00, 0x00],
[0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F, 0x00, 0x00],
[0x00, 0x41, 0x7F, 0x41, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x20, 0x40, 0x41, 0x3F, 0x01, 0x00, 0x00],
[0x00, 0x7F, 0x08, 0x14, 0x22, 0x41, 0x00, 0x00],
[0x00, 0x7F, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00],
[0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F, 0x00, 0x00],
[0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F, 0x00, 0x00],
[0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E, 0x00, 0x00],
[0x00, 0x7F, 0x09, 0x09, 0x09, 0x06, 0x00, 0x00],
[0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E, 0x00, 0x00],
[0x00, 0x7F, 0x09, 0x19, 0x29, 0x46, 0x00, 0x00],
[0x00, 0x26, 0x49, 0x49, 0x49, 0x32, 0x00, 0x00],
[0x00, 0x01, 0x01, 0x7F, 0x01, 0x01, 0x00, 0x00],
[0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F, 0x00, 0x00],
[0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F, 0x00, 0x00],
[0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F, 0x00, 0x00],
[0x00, 0x63, 0x14, 0x08, 0x14, 0x63, 0x00, 0x00],
[0x00, 0x03, 0x04, 0x78, 0x04, 0x03, 0x00, 0x00],
[0x00, 0x61, 0x51, 0x49, 0x45, 0x43, 0x00, 0x00],
[0x00, 0x7F, 0x41, 0x41, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x02, 0x04, 0x08, 0x10, 0x20, 0x00, 0x00],
[0x00, 0x41, 0x41, 0x7F, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x04, 0x02, 0x01, 0x02, 0x04, 0x00, 0x00],
[0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00],
[0x00, 0x01, 0x02, 0x04, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x20, 0x54, 0x54, 0x54, 0x78, 0x00, 0x00],
[0x00, 0x7F, 0x48, 0x44, 0x44, 0x38, 0x00, 0x00],
[0x00, 0x38, 0x44, 0x44, 0x28, 0x00, 0x00, 0x00],
[0x00, 0x38, 0x44, 0x44, 0x48, 0x7F, 0x00, 0x00],
[0x00, 0x38, 0x54, 0x54, 0x54, 0x18, 0x00, 0x00],
[0x00, 0x08, 0x7E, 0x09, 0x02, 0x00, 0x00, 0x00],
[0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C, 0x00, 0x00],
[0x00, 0x7F, 0x08, 0x04, 0x04, 0x78, 0x00, 0x00],
[0x00, 0x00, 0x7D, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x80, 0x84, 0x7D, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x7F, 0x10, 0x28, 0x44, 0x00, 0x00, 0x00],
[0x00, 0x41, 0x7F, 0x40, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x7C, 0x04, 0x18, 0x04, 0x78, 0x00, 0x00],
[0x00, 0x7C, 0x08, 0x04, 0x7C, 0x00, 0x00, 0x00],
[0x00, 0x38, 0x44, 0x44, 0x38, 0x00, 0x00, 0x00],
[0x00, 0xFC, 0x24, 0x24, 0x18, 0x00, 0x00, 0x00],
[0x00, 0x18, 0x24, 0x24, 0xFC, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x7C, 0x08, 0x04, 0x00, 0x00, 0x00],
[0x00, 0x48, 0x54, 0x54, 0x24, 0x00, 0x00, 0x00],
[0x00, 0x04, 0x7F, 0x44, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x3C, 0x40, 0x40, 0x7C, 0x00, 0x00, 0x00],
[0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C, 0x00, 0x00],
[0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C, 0x00, 0x00],
[0x00, 0x44, 0x28, 0x10, 0x28, 0x44, 0x00, 0x00],
[0x00, 0x1C, 0xA0, 0xA0, 0x7C, 0x00, 0x00, 0x00],
[0x00, 0x44, 0x64, 0x54, 0x4C, 0x44, 0x00, 0x00],
[0x00, 0x08, 0x36, 0x41, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x41, 0x36, 0x08, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x02, 0x01, 0x01, 0x02, 0x01, 0x00, 0x00],
[0x00, 0x02, 0x05, 0x05, 0x02, 0x00, 0x00, 0x00]]
class GroveOledDisplay128x64(object):
HORIZONTAL = 0x00
VERTICAL = 0x01
PAGE = 0x02
def __init__(self, bus=None, address=0x3C):
self.bus = Bus(bus)
self.address = address
self.off()
self.inverse = False
self.mode = self.HORIZONTAL
self.clear()
self.on()
def on(self):
self.send_command(_DISPLAY_ON)
def off(self):
self.send_command(_DISPLAY_OFF)
def send_command(self, command):
self.bus.write_byte_data(self.address, _COMMAND_MODE, command)
def send_data(self, data):
self.bus.write_byte_data(self.address, _DATA_MODE, data)
def send_commands(self, commands):
for c in commands:
self.send_command(c)
def clear(self):
self.off()
for i in range(8):
self.set_cursor(i, 0)
self.puts(' ' * 16)
self.on()
self.set_cursor(0, 0)
@property
def inverse(self):
return self._inverse
@inverse.setter
def inverse(self, enable):
self.send_command(_INVERSE_DISPLAY if enable else _NORMAL_DISPLAY)
self._inverse = enable
@property
def mode(self):
return self._mode
@mode.setter
def mode(self, mode):
self.send_command(0x20)
self.send_command(mode)
self._mode = mode
def set_cursor(self, row, column):
self.send_command(0xB0 + row)
self.send_command(0x00 + (8*column & 0x0F))
self.send_command(0x10 + ((8*column>>4)&0x0F))
def putc(self, c):
C_add = ord(c)
if C_add < 32 or C_add > 127: # Ignore non-printable ASCII characters
c = ' '
C_add = ord(c)
for i in range(0, 8):
self.send_data(BasicFont[C_add-32][i])
def puts(self, text):
for c in text:
self.putc(c)
def show_image(self, image):
from PIL import Image
import numpy as np
im = Image.open(image)
bw = im.convert('1')
pixels = np.array(bw.getdata())
page_size = 128 * 8
self.set_cursor(0, 0)
for page in range(8):
start = page_size * page
end = start + page_size
for i in range(start, start + 128):
data = np.packbits(pixels[i:end:128][::-1])[0]
self.send_data(data)
def main():
display = GroveOledDisplay128x64()
display.set_cursor(0, 0)
display.puts('hello')
display.set_cursor(1, 4)
display.puts('world')
if __name__ == "__main__":
main()