92 lines
3.2 KiB
Python
92 lines
3.2 KiB
Python
# The MIT License (MIT)
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#
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# Copyright (c) 2018 Kattni Rembor for Adafruit Industries
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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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"""
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`adafruit_character_lcd.character_lcd_i2c`
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====================================================
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Module for using I2C with I2C/SPI character LCD backpack
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* Author(s): Kattni Rembor
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Implementation Notes
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--------------------
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**Hardware:**
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"* `I2C / SPI character LCD backpack <https://www.adafruit.com/product/292>`_"
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**Software and Dependencies:**
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* Adafruit CircuitPython firmware:
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https://github.com/adafruit/circuitpython/releases
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* Adafruit's Bus Device library (when using I2C/SPI):
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https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
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"""
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from adafruit_mcp230xx.mcp23008 import MCP23008
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from adafruit_character_lcd.character_lcd import Character_LCD_Mono
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__version__ = "0.0.0-auto.0"
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__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_CharLCD.git"
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class Character_LCD_I2C(Character_LCD_Mono):
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# pylint: disable=too-few-public-methods, too-many-arguments
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"""Character LCD connected to I2C/SPI backpack using its I2C connection.
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This is a subclass of Character_LCD and implements all of the same
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functions and functionality.
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To use, import and initialise as follows:
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.. code-block:: python
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import board
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import busio
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from adafruit_character_lcd.character_lcd_i2c import Character_LCD_I2C
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i2c = busio.I2C(board.SCL, board.SDA)
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lcd = Character_LCD_I2C(i2c, 16, 2)
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"""
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def __init__(self, i2c, columns, lines, address=None, backlight_inverted=False):
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"""Initialize character LCD connected to backpack using I2C connection
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on the specified I2C bus with the specified number of columns and
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lines on the display. Optionally specify if backlight is inverted.
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"""
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if address:
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mcp = MCP23008(i2c, address=address)
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else:
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mcp = MCP23008(i2c)
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super().__init__(
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mcp.get_pin(1),
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mcp.get_pin(2),
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mcp.get_pin(3),
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mcp.get_pin(4),
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mcp.get_pin(5),
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mcp.get_pin(6),
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columns,
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lines,
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backlight_pin=mcp.get_pin(7),
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backlight_inverted=backlight_inverted,
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)
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