227 wiersze
6.7 KiB
Python
227 wiersze
6.7 KiB
Python
#
|
|
# MicroPython SH1106 OLED driver, I2C and SPI interfaces
|
|
#
|
|
# The MIT License (MIT)
|
|
#
|
|
# Copyright (c) 2016 Radomir Dopieralski (@deshipu),
|
|
# 2017 Robert Hammelrath (@robert-hh)
|
|
#
|
|
# 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.
|
|
#
|
|
# Sample code sections
|
|
# ------------ SPI ------------------
|
|
# Pin Map SPI
|
|
# - 3v - xxxxxx - Vcc
|
|
# - G - xxxxxx - Gnd
|
|
# - D7 - GPIO 13 - Din / MOSI fixed
|
|
# - D5 - GPIO 14 - Clk / Sck fixed
|
|
# - D8 - GPIO 4 - CS (optional, if the only connected device)
|
|
# - D2 - GPIO 5 - D/C
|
|
# - D1 - GPIO 2 - Res
|
|
#
|
|
# for CS, D/C and Res other ports may be chosen.
|
|
#
|
|
# from machine import Pin, SPI
|
|
# import sh1106
|
|
|
|
# spi = SPI(1, baudrate=1000000)
|
|
# display = sh1106.SH1106_SPI(128, 64, spi, Pin(5), Pin(2), Pin(4))
|
|
# display.sleep(False)
|
|
# display.fill(0)
|
|
# display.text('Testing 1', 0, 0, 1)
|
|
# display.show()
|
|
#
|
|
# --------------- I2C ------------------
|
|
#
|
|
# Pin Map I2C
|
|
# - 3v - xxxxxx - Vcc
|
|
# - G - xxxxxx - Gnd
|
|
# - D2 - GPIO 5 - SCK / SCL
|
|
# - D1 - GPIO 4 - DIN / SDA
|
|
# - D0 - GPIO 16 - Res
|
|
# - G - xxxxxx CS
|
|
# - G - xxxxxx D/C
|
|
#
|
|
# Pin's for I2C can be set almost arbitrary
|
|
#
|
|
# from machine import Pin, I2C
|
|
# import sh1106
|
|
#
|
|
# i2c = I2C(scl=Pin(5), sda=Pin(4), freq=400000)
|
|
# display = sh1106.SH1106_I2C(128, 64, i2c, Pin(16), 0x3c)
|
|
# display.sleep(False)
|
|
# display.fill(0)
|
|
# display.text('Testing 1', 0, 0, 1)
|
|
# display.show()
|
|
|
|
from micropython import const
|
|
import utime as time
|
|
import framebuf
|
|
|
|
|
|
# a few register definitions
|
|
_SET_CONTRAST = const(0x81)
|
|
_SET_NORM_INV = const(0xa6)
|
|
_SET_DISP = const(0xae)
|
|
_SET_SCAN_DIR = const(0xc0)
|
|
_SET_SEG_REMAP = const(0xa0)
|
|
_LOW_COLUMN_ADDRESS = const(0x00)
|
|
_HIGH_COLUMN_ADDRESS = const(0x10)
|
|
_SET_PAGE_ADDRESS = const(0xB0)
|
|
|
|
|
|
class SH1106:
|
|
def __init__(self, width, height, external_vcc):
|
|
self.width = width
|
|
self.height = height
|
|
self.external_vcc = external_vcc
|
|
self.pages = self.height // 8
|
|
self.buffer = bytearray(self.pages * self.width)
|
|
fb = framebuf.FrameBuffer(self.buffer, self.width, self.height,
|
|
framebuf.MVLSB)
|
|
self.framebuf = fb
|
|
# set shortcuts for the methods of framebuf
|
|
self.fill = fb.fill
|
|
self.fill_rect = fb.fill_rect
|
|
self.hline = fb.hline
|
|
self.vline = fb.vline
|
|
self.line = fb.line
|
|
self.rect = fb.rect
|
|
self.pixel = fb.pixel
|
|
self.scroll = fb.scroll
|
|
self.text = fb.text
|
|
self.blit = fb.blit
|
|
|
|
self.init_display()
|
|
|
|
def init_display(self):
|
|
self.reset()
|
|
self.fill(0)
|
|
self.poweron()
|
|
self.show()
|
|
|
|
def poweroff(self):
|
|
self.write_cmd(_SET_DISP | 0x00)
|
|
|
|
def poweron(self):
|
|
self.write_cmd(_SET_DISP | 0x01)
|
|
|
|
def rotate(self, flag, update=True):
|
|
if flag:
|
|
self.write_cmd(_SET_SEG_REMAP | 0x01) # mirror display vertically
|
|
self.write_cmd(_SET_SCAN_DIR | 0x08) # mirror display hor.
|
|
else:
|
|
self.write_cmd(_SET_SEG_REMAP | 0x00)
|
|
self.write_cmd(_SET_SCAN_DIR | 0x00)
|
|
if update:
|
|
self.show()
|
|
|
|
def sleep(self, value):
|
|
self.write_cmd(_SET_DISP | (not value))
|
|
|
|
def contrast(self, contrast):
|
|
self.write_cmd(_SET_CONTRAST)
|
|
self.write_cmd(contrast)
|
|
|
|
def invert(self, invert):
|
|
self.write_cmd(_SET_NORM_INV | (invert & 1))
|
|
|
|
def show(self):
|
|
for page in range(self.height // 8):
|
|
self.write_cmd(_SET_PAGE_ADDRESS | page)
|
|
self.write_cmd(_LOW_COLUMN_ADDRESS | 2)
|
|
self.write_cmd(_HIGH_COLUMN_ADDRESS | 0)
|
|
self.write_data(self.buffer[
|
|
self.width * page:self.width * page + self.width
|
|
])
|
|
|
|
def reset(self, res):
|
|
if res is not None:
|
|
res(1)
|
|
time.sleep_ms(1)
|
|
res(0)
|
|
time.sleep_ms(20)
|
|
res(1)
|
|
time.sleep_ms(20)
|
|
|
|
|
|
class SH1106_I2C(SH1106):
|
|
def __init__(self, width, height, i2c, res=None, addr=0x3c,
|
|
external_vcc=False):
|
|
self.i2c = i2c
|
|
self.addr = addr
|
|
self.res = res
|
|
self.temp = bytearray(2)
|
|
if res is not None:
|
|
res.init(res.OUT, value=1)
|
|
super().__init__(width, height, external_vcc)
|
|
|
|
def write_cmd(self, cmd):
|
|
self.temp[0] = 0x80 # Co=1, D/C#=0
|
|
self.temp[1] = cmd
|
|
self.i2c.writeto(self.addr, self.temp)
|
|
|
|
def write_data(self, buf):
|
|
self.i2c.writeto(self.addr, b'\x40'+buf)
|
|
|
|
def reset(self):
|
|
super().reset(self.res)
|
|
|
|
|
|
class SH1106_SPI(SH1106):
|
|
def __init__(self, width, height, spi, dc, res=None, cs=None,
|
|
external_vcc=False):
|
|
self.rate = 10 * 1000 * 1000
|
|
dc.init(dc.OUT, value=0)
|
|
if res is not None:
|
|
res.init(res.OUT, value=0)
|
|
if cs is not None:
|
|
cs.init(cs.OUT, value=1)
|
|
self.spi = spi
|
|
self.dc = dc
|
|
self.res = res
|
|
self.cs = cs
|
|
super().__init__(width, height, external_vcc)
|
|
|
|
def write_cmd(self, cmd):
|
|
self.spi.init(baudrate=self.rate, polarity=0, phase=0)
|
|
if self.cs is not None:
|
|
self.cs(1)
|
|
self.dc(0)
|
|
self.cs(0)
|
|
self.spi.write(bytearray([cmd]))
|
|
self.cs(1)
|
|
else:
|
|
self.dc(0)
|
|
self.spi.write(bytearray([cmd]))
|
|
|
|
def write_data(self, buf):
|
|
self.spi.init(baudrate=self.rate, polarity=0, phase=0)
|
|
if self.cs is not None:
|
|
self.cs(1)
|
|
self.dc(1)
|
|
self.cs(0)
|
|
self.spi.write(buf)
|
|
self.cs(1)
|
|
else:
|
|
self.dc(1)
|
|
self.spi.write(buf)
|
|
|
|
def reset(self):
|
|
super().reset(self.res) |