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Melissa LeBlanc-Williams Separated Driver and Examples aadd433 Apr 2, 2019
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# The MIT License (MIT)
#
# Copyright (c) 2019 Scott Shawcroft and Melissa LeBlanc-Williams
# for Adafruit Industries LLC
#
# 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.
"""
`adafruit_st7735r`
====================================================
Displayio driver for ST7735R based displays.
* Author(s): Scott Shawcroft and Melissa LeBlanc-Williams
Implementation Notes
--------------------
**Hardware:**
* 1.8" SPI TFT display, 160x128 18-bit color:
https://www.adafruit.com/product/618
* Adafruit 0.96" 160x80 Color TFT Display w/ MicroSD Card Breakout:
https://www.adafruit.com/product/3533
* 1.8" Color TFT LCD display with MicroSD Card Breakout:
https://www.adafruit.com/product/358
* Adafruit 1.44" Color TFT LCD Display with MicroSD Card breakout:
https://www.adafruit.com/product/2088
* Adafruit Mini Color TFT with Joystick FeatherWing:
https://www.adafruit.com/product/3321
**Software and Dependencies:**
* Adafruit CircuitPython firmware for the supported boards:
https://github.com/adafruit/circuitpython/releases
"""
import displayio
__version__ = "0.0.0-auto.0"
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_ST7735R.git"
_INIT_SEQUENCE = bytearray(
b"\x01\x80\x96" # SWRESET and Delay 150ms
b"\x11\x80\xff" # SLPOUT and Delay
b"\xb1\x03\x01\x2C\x2D" # _FRMCTR1
b"\xb2\x03\x01\x2C\x2D" # _FRMCTR2
b"\xb3\x06\x01\x2C\x2D\x01\x2C\x2D" # _FRMCTR3
b"\xb4\x01\x07" # _INVCTR line inversion
b"\xc0\x03\xa2\x02\x84" # _PWCTR1 GVDD = 4.7V, 1.0uA
b"\xc1\x01\xc5" # _PWCTR2 VGH=14.7V, VGL=-7.35V
b"\xc2\x02\x0a\x00" # _PWCTR3 Opamp current small, Boost frequency
b"\xc3\x02\x8a\x2a"
b"\xc4\x02\x8a\xee"
b"\xc5\x01\x0e" # _VMCTR1 VCOMH = 4V, VOML = -1.1V
b"\x20\x00" # _INVOFF
b"\x36\x01\x18" # _MADCTL bottom to top refresh
# 1 clk cycle nonoverlap, 2 cycle gate rise, 3 sycle osc equalie,
# fix on VTL
b"\x3a\x01\x05" # COLMOD - 16bit color
b"\xe0\x10\x02\x1c\x07\x12\x37\x32\x29\x2d\x29\x25\x2B\x39\x00\x01\x03\x10" # _GMCTRP1 Gamma
b"\xe1\x10\x03\x1d\x07\x06\x2E\x2C\x29\x2D\x2E\x2E\x37\x3F\x00\x00\x02\x10" # _GMCTRN1
b"\x13\x80\x0a" # _NORON
b"\x29\x80\x64" # _DISPON
)
# pylint: disable=too-few-public-methods
class ST7735R(displayio.Display):
"""ST7735 driver for ST7735R"""
def __init__(self, bus, *, bgr=False, **kwargs):
"""
:param bool bgr: (Optional) An extra init sequence to append (default=False)
"""
init_sequence = _INIT_SEQUENCE
if bgr:
init_sequence += b"\x36\x01\xC0" # _MADCTL Default rotation plus BGR encoding
super().__init__(bus, init_sequence, **kwargs)
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