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https://github.com/jayofelony/pwnagotchi.git
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I2C oled config can be added in the config.toml Default is 128x64 display on i2c address 0x3C ui.display.type = "i2coled" ui.display.i2c_addr = 0x3C ui.display.width = 128 ui.display.height = 64
294 lines
12 KiB
Python
294 lines
12 KiB
Python
# Copyright (c) 2014 Adafruit Industries
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# Author: Tony DiCola
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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from __future__ import division
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import logging
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import time
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import RPi.GPIO as GPIO
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import spidev
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from smbus import SMBus
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i2cbus = SMBus(1)
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# Constants
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SSD1306_I2C_ADDRESS = 0x3C # 011110+SA0+RW - 0x3C or 0x3D
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SSD1306_SETCONTRAST = 0x81
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SSD1306_DISPLAYALLON_RESUME = 0xA4
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SSD1306_DISPLAYALLON = 0xA5
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SSD1306_NORMALDISPLAY = 0xA6
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SSD1306_INVERTDISPLAY = 0xA7
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SSD1306_DISPLAYOFF = 0xAE
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SSD1306_DISPLAYON = 0xAF
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SSD1306_SETDISPLAYOFFSET = 0xD3
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SSD1306_SETCOMPINS = 0xDA
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SSD1306_SETVCOMDETECT = 0xDB
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SSD1306_SETDISPLAYCLOCKDIV = 0xD5
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SSD1306_SETPRECHARGE = 0xD9
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SSD1306_SETMULTIPLEX = 0xA8
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SSD1306_SETLOWCOLUMN = 0x00
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SSD1306_SETHIGHCOLUMN = 0x10
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SSD1306_SETSTARTLINE = 0x40
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SSD1306_MEMORYMODE = 0x20
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SSD1306_COLUMNADDR = 0x21
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SSD1306_PAGEADDR = 0x22
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SSD1306_COMSCANINC = 0xC0
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SSD1306_COMSCANDEC = 0xC8
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SSD1306_SEGREMAP = 0xA0
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SSD1306_CHARGEPUMP = 0x8D
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SSD1306_EXTERNALVCC = 0x1
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SSD1306_SWITCHCAPVCC = 0x2
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# Scrolling constants
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SSD1306_ACTIVATE_SCROLL = 0x2F
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SSD1306_DEACTIVATE_SCROLL = 0x2E
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SSD1306_SET_VERTICAL_SCROLL_AREA = 0xA3
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SSD1306_RIGHT_HORIZONTAL_SCROLL = 0x26
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SSD1306_LEFT_HORIZONTAL_SCROLL = 0x27
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SSD1306_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL = 0x29
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SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL = 0x2A
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class SSD1306Base(object):
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"""Base class for SSD1306-based OLED displays. Implementors should subclass
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and provide an implementation for the _initialize function.
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"""
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def __init__(self, width, height, address=SSD1306_I2C_ADDRESS, bus=None):
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self._log = logging.getLogger('Adafruit_SSD1306.SSD1306Base')
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# self._rst = None
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self.cmd_mode = 0x00
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self.data_mode = 0x40
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self.bus = i2cbus
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self.addr = address
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self.width = width
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self.height = height
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self._pages = height//8
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self._buffer = [0]*(width*self._pages)
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def _initialize(self):
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raise NotImplementedError
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def command(self, *cmd):
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"""Send command byte to display."""
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# I2C write.
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assert(len(cmd) <= 31)
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self.bus.write_i2c_block_data(self.addr, self.cmd_mode, list(cmd))
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def data(self, data):
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"""Send byte of data to display."""
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# I2C write.
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for i in range(0, len(data), 31):
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self.bus.write_i2c_block_data(self.addr, self.data_mode, list(data[i:i+31]))
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def begin(self, vccstate=SSD1306_SWITCHCAPVCC):
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"""Initialize display."""
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# Save vcc state.
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self._vccstate = vccstate
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# Reset and initialize display.
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self._initialize()
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# Turn on the display.
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self.command(SSD1306_DISPLAYON)
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def ShowImage(self):
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"""
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The image on the "canvas" is flushed through to the hardware display.
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Takes the 1-bit image and dumps it to the SSD1306 OLED display.
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"""
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self.command(SSD1306_COLUMNADDR)
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self.command(0) # Column start address. (0 = reset)
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self.command(self.width-1) # Column end address.
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self.command(SSD1306_PAGEADDR)
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self.command(0) # Page start address. (0 = reset)
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self.command(self._pages-1) # Page end address.
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for i in range(0, len(self._buffer), 16):
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self.bus.write_i2c_block_data(self.addr, self.data_mode, self._buffer[i:i+16])
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def getbuffer(self, image):
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"""Set buffer to value of Python Imaging Library image. The image should
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be in 1 bit mode and a size equal to the display size.
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"""
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if image.mode != '1':
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raise ValueError('Image must be in mode 1.')
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imwidth, imheight = image.size
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if imwidth != self.width or imheight != self.height:
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raise ValueError('Image must be same dimensions as display ({0}x{1}).' \
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.format(self.width, self.height))
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# Grab all the pixels from the image, faster than getpixel.
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pix = image.load()
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# Iterate through the memory pages
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index = 0
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for page in range(self._pages):
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# Iterate through all x axis columns.
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for x in range(self.width):
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# Set the bits for the column of pixels at the current position.
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bits = 0
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# Don't use range here as it's a bit slow
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for bit in [0, 1, 2, 3, 4, 5, 6, 7]:
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bits = bits << 1
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bits |= 0 if pix[(x, page*8+7-bit)] == 0 else 1
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# Update buffer byte and increment to next byte.
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self._buffer[index] = bits
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index += 1
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def clear(self):
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"""Clear contents of image buffer."""
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self._buffer = [0]*(self.width*self._pages)
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def set_contrast(self, contrast):
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"""Sets the contrast of the display. Contrast should be a value between
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0 and 255."""
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if contrast < 0 or contrast > 255:
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raise ValueError('Contrast must be a value from 0 to 255 (inclusive).')
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self.command(SSD1306_SETCONTRAST)
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self.command(contrast)
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def dim(self, dim):
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"""Adjusts contrast to dim the display if dim is True, otherwise sets the
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contrast to normal brightness if dim is False.
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"""
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# Assume dim display.
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contrast = 0
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# Adjust contrast based on VCC if not dimming.
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if not dim:
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if self._vccstate == SSD1306_EXTERNALVCC:
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contrast = 0x9F
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else:
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contrast = 0xCF
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self.set_contrast(contrast)
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class SSD1306_128_64(SSD1306Base):
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def __init__(self, width, height, address=None, bus=None):
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# Call base class constructor.
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super(SSD1306_128_64, self).__init__(128, 64, address, bus)
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def _initialize(self):
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# 128x64 pixel specific initialization.
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self.command(SSD1306_DISPLAYOFF) # 0xAE
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self.command(SSD1306_SETDISPLAYCLOCKDIV) # 0xD5
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self.command(0x80) # the suggested ratio 0x80
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self.command(SSD1306_SETMULTIPLEX) # 0xA8
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self.command(0x3F)
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self.command(SSD1306_SETDISPLAYOFFSET) # 0xD3
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self.command(0x0) # no offset
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self.command(SSD1306_SETSTARTLINE | 0x0) # line #0
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self.command(SSD1306_CHARGEPUMP) # 0x8D
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if self._vccstate == SSD1306_EXTERNALVCC:
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self.command(0x10)
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else:
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self.command(0x14)
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self.command(SSD1306_MEMORYMODE) # 0x20
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self.command(0x00) # 0x0 act like ks0108
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self.command(SSD1306_SEGREMAP | 0x1)
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self.command(SSD1306_COMSCANDEC)
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self.command(SSD1306_SETCOMPINS) # 0xDA
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self.command(0x12)
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self.command(SSD1306_SETCONTRAST) # 0x81
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if self._vccstate == SSD1306_EXTERNALVCC:
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self.command(0x9F)
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else:
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self.command(0xCF)
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self.command(SSD1306_SETPRECHARGE) # 0xd9
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if self._vccstate == SSD1306_EXTERNALVCC:
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self.command(0x22)
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else:
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self.command(0xF1)
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self.command(SSD1306_SETVCOMDETECT) # 0xDB
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self.command(0x40)
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self.command(SSD1306_DISPLAYALLON_RESUME) # 0xA4
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self.command(SSD1306_NORMALDISPLAY) # 0xA6
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class SSD1306_128_32(SSD1306Base):
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def __init__(self, width, height, address=None, bus=None):
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# Call base class constructor.
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super(SSD1306_128_64, self).__init__(128, 64, address, bus)
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def _initialize(self):
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# 128x32 pixel specific initialization.
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self.command(SSD1306_DISPLAYOFF) # 0xAE
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self.command(SSD1306_SETDISPLAYCLOCKDIV) # 0xD5
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self.command(0x80) # the suggested ratio 0x80
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self.command(SSD1306_SETMULTIPLEX) # 0xA8
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self.command(0x1F)
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self.command(SSD1306_SETDISPLAYOFFSET) # 0xD3
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self.command(0x0) # no offset
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self.command(SSD1306_SETSTARTLINE | 0x0) # line #0
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self.command(SSD1306_CHARGEPUMP) # 0x8D
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if self._vccstate == SSD1306_EXTERNALVCC:
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self.command(0x10)
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else:
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self.command(0x14)
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self.command(SSD1306_MEMORYMODE) # 0x20
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self.command(0x00) # 0x0 act like ks0108
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self.command(SSD1306_SEGREMAP | 0x1)
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self.command(SSD1306_COMSCANDEC)
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self.command(SSD1306_SETCOMPINS) # 0xDA
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self.command(0x02)
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self.command(SSD1306_SETCONTRAST) # 0x81
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self.command(0x8F)
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self.command(SSD1306_SETPRECHARGE) # 0xd9
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if self._vccstate == SSD1306_EXTERNALVCC:
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self.command(0x22)
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else:
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self.command(0xF1)
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self.command(SSD1306_SETVCOMDETECT) # 0xDB
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self.command(0x40)
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self.command(SSD1306_DISPLAYALLON_RESUME) # 0xA4
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self.command(SSD1306_NORMALDISPLAY) # 0xA6
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class SSD1306_96_16(SSD1306Base):
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def __init__(self, width, height, address=None, bus=None):
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# Call base class constructor.
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super(SSD1306_96_16, self).__init__(96, 16, address, bus)
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def _initialize(self):
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# 128x32 pixel specific initialization.
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self.command(SSD1306_DISPLAYOFF) # 0xAE
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self.command(SSD1306_SETDISPLAYCLOCKDIV) # 0xD5
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self.command(0x60) # the suggested ratio 0x60
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self.command(SSD1306_SETMULTIPLEX) # 0xA8
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self.command(0x0F)
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self.command(SSD1306_SETDISPLAYOFFSET) # 0xD3
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self.command(0x0) # no offset
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self.command(SSD1306_SETSTARTLINE | 0x0) # line #0
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self.command(SSD1306_CHARGEPUMP) # 0x8D
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if self._vccstate == SSD1306_EXTERNALVCC:
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self.command(0x10)
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else:
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self.command(0x14)
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self.command(SSD1306_MEMORYMODE) # 0x20
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self.command(0x00) # 0x0 act like ks0108
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self.command(SSD1306_SEGREMAP | 0x1)
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self.command(SSD1306_COMSCANDEC)
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self.command(SSD1306_SETCOMPINS) # 0xDA
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self.command(0x02)
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self.command(SSD1306_SETCONTRAST) # 0x81
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self.command(0x8F)
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self.command(SSD1306_SETPRECHARGE) # 0xd9
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if self._vccstate == SSD1306_EXTERNALVCC:
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self.command(0x22)
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else:
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self.command(0xF1)
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self.command(SSD1306_SETVCOMDETECT) # 0xDB
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self.command(0x40)
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self.command(SSD1306_DISPLAYALLON_RESUME) # 0xA4
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self.command(SSD1306_NORMALDISPLAY) # 0xA6 |