#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# The MIT License (MIT)
# Copyright (C) 2018 Seeed Technology Co.,Ltd.
#
# This is the library for Grove Base Hat
# which used to connect grove sensors for Raspberry Pi.
'''
This is the code for
- `OLED Display 1.12" <https://www.seeedstudio.com/Grove-OLED-Display-1-1-p-824.html>`_
- `OLED Display 1.12" V2 <https://www.seeedstudio.com/Grove-OLED-Display-1-12-V2-p-3031.html>`_
Examples:
.. code-block:: python
import time
from grove.factory import Factory
oled = Factory.getDisplay("SH1107G")
rows, cols = oled.size()
print("OLED model: {}".format(oled.name))
print("OLED type : {} x {}".format(cols, rows))
oled.setCursor(0, 0)
oled.write("hello world!")
oled.setCursor(0, cols - 1)
oled.write('X')
oled.setCursor(rows - 1, 0)
for i in range(cols):
oled.write(chr(ord('A') + i))
time.sleep(3)
oled.clear()
'''
from grove.display.base import *
from upm.pyupm_lcd import *
from grove.i2c import Bus
import sys, mraa
# sphinx autoapi required
__all__ = ["SH1107G_SSD1327"]
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],
]
[docs]class SH1107G_SSD1327(Display):
'''
OLED Display 1.12"(v2) use chip SSD1327 or SH1107G.
Args:
address(int): I2C device address, default to 0x3E.
'''
MAX_GRAY = 100
_REG_CMD = 0x00
_REG_DATA = 0x40
_PAGE_CNT = 16
_PAGE_BYTES = 128
_TOTAL_BYTES= _PAGE_CNT * _PAGE_BYTES
def __init__(self, address = 0x3C):
super(SH1107G_SSD1327, self).__init__()
# self._bus = Bus()
self._bus = mraa.I2c(0)
self._addr = address
self._bus.address(self._addr)
if self._bus.writeByte(0):
print("Check if the OLED SH1107G/SSD1307 inserted, then try again")
sys.exit(1)
# id = self._bus.read_byte_data(self._addr, SH1107G_SSD1327._REG_CMD)
id = self._bus.readReg(SH1107G_SSD1327._REG_CMD)
# print(" id = 0x{:2x}".format(id))
self._sh1107 = (id & 0x3F) == 0x07
if not self._sh1107:
self._ssd1327 = SSD1327(0)
return
blk = [0xAE] # Display OFF
blk.append(0xD5) # Set Dclk
blk.append(0x50) # 100Hz
blk.append(0x20) # Set row address
blk.append(0x81) # Set contrast control
blk.append(0x80)
blk.append(0xA0) # Segment remap
blk.append(0xA4) # Set Entire Display ON
blk.append(0xA6) # Normal display
blk.append(0xAD) # Set external VCC
blk.append(0x80)
blk.append(0xC0) # Set Common scan direction
blk.append(0xD9) # Set phase leghth
blk.append(0x1F)
blk.append(0xDB) # Set Vcomh voltage
blk.append(0x27)
blk.append(0xAF) # Display ON
blk.append(0xB0)
blk.append(0x00)
blk.append(0x10)
self._cmds(blk)
self.clear()
def _cmd(self, cmd):
try:
# self._bus.write_byte_data(self._addr,
self._bus.writeReg(
SH1107G_SSD1327._REG_CMD, cmd)
except IOError:
print("*** Check if OLED module inserted ***")
sys.exit(1)
def _cmds(self, cmds):
for c in cmds:
self._cmd(c)
def _datas(self, datas):
length = len(datas)
data = bytearray(length + 1)
data[0] = SH1107G_SSD1327._REG_DATA
for i in range(length):
data[i + 1] = datas[i]
try:
self._bus.write(data)
# self._bus.write_i2c_block_data(self._addr,
# SH1107G_SSD1327._REG_DATA, datas)
except IOError:
print("*** Check if OLED module inserted ***")
sys.exit(1)
@property
def name(self):
'''
Get device name
Returns:
string: SH1107G/SSD1307 depends your device plugin.
'''
return "SH1107G" if self._sh1107 else "SSD1327"
[docs] def type(self):
'''
Get device type
Returns:
int: ``TYPE_GRAY``
'''
return TYPE_GRAY
def size(self):
if not self._sh1107:
# Gray OLED 96x96
return 12, 12
# Gray OLED 128x128
return 16, 16
[docs] def clear(self):
'''
Clears the screen and positions the cursor in the upper-left corner.
'''
if not self._sh1107:
self._ssd1327.clear()
return
zeros = [ 0x0 for dummy in range(SH1107G_SSD1327._TOTAL_BYTES) ]
self.draw(zeros, SH1107G_SSD1327._TOTAL_BYTES)
[docs] def draw(self, data, bytes):
'''
Quickly transfer/draw bulk data (specified by data) to OLED,
transfer size specified by bytes.
Args:
data (list of int): the data to transfer/draw
bytes (int) : data size
'''
if not self._sh1107:
self._ssd1327.draw(data, bytes)
return
# all pages fill with data
for i in range(SH1107G_SSD1327._PAGE_CNT):
if i > bytes / SH1107G_SSD1327._PAGE_BYTES:
return
self._cmd(BASE_PAGE_START_ADDR + i)
self._cmd(BASE_LOW_COLUMN_ADDR)
self._cmd(BASE_HIGH_COLUMN_ADDR)
# fill one PAGE bytes
for k in range(0, SH1107G_SSD1327._PAGE_BYTES, 32):
# I2C limit to 32 bytes each transfer
begin = i * SH1107G_SSD1327._PAGE_BYTES + k
end = begin + 32
self._datas(data[begin:end])
[docs] def home(self):
'''
Positions the cursor in the upper-left of the OLED.
That is, use that location in outputting subsequent text to the display.
'''
if not self._sh1107:
self._ssd1327.home()
return
self.setCusor(0, 0)
[docs] def setCursor(self, row, column):
'''
Position the OLED cursor; that is, set the location
at which subsequent text written to the OLED will be displayed.
Args:
row (int): the row at which to position cursor, with 0 being the first row
column(int): the column at which to position cursor, with 0 being the first column
Returns:
None
'''
if not self._sh1107:
self._ssd1327.setCursor(row, column)
return
self._cmd(BASE_PAGE_START_ADDR + row)
self._cmd(0x08 if column % 2 else BASE_LOW_COLUMN_ADDR)
self._cmd(BASE_HIGH_COLUMN_ADDR + (column >> 1))
def _putchar(self, c):
asc = ord(c)
if asc < 32 or asc > 127:
asc = ord(' ')
for i in range(8):
fontmap = []
fontmap.append(BasicFont[asc - 32][i])
self._datas(fontmap)
[docs] def write(self, msg):
'''
Write character(s) to the OLED.
Args:
msg (string): the character(s) to write to the display
Returns:
None
'''
if not self._sh1107:
self._ssd1327.write(msg)
return
for i in range(len(msg)):
self._putchar(msg[i])
def _backlight_on(self, en):
self._cmd(DISPLAY_CMD_ON if en else DISPLAY_CMD_OFF)
def main():
import time
oled = SH1107G_SSD1327()
rows, cols = oled.size()
print("OLED model: {}".format(oled.name))
print("OLED type : {} x {}".format(cols, rows))
oled.backlight(False)
time.sleep(1)
oled.backlight(True)
oled.setCursor(0, 0)
oled.write("hello world!")
oled.setCursor(0, cols - 1)
oled.write('X')
oled.setCursor(rows - 1, 0)
for i in range(cols):
oled.write(chr(ord('A') + i))
time.sleep(3)
oled.clear()
if __name__ == '__main__':
main()