Source code for adafruit_featherwing.minitft_featherwing

# SPDX-FileCopyrightText: 2019 Melissa LeBlanc-Williams for Adafruit Industries
#
# SPDX-License-Identifier: MIT

"""
`adafruit_featherwing.minitft_featherwing`
====================================================

Helper for using the `Mini Color TFT with Joystick FeatherWing
<https://www.adafruit.com/product/3321>`_.

* Author(s): Melissa LeBlanc-Williams
"""

__version__ = "0.0.0-auto.0"
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_FeatherWing.git"

from collections import namedtuple
import board
from micropython import const
from adafruit_seesaw.seesaw import Seesaw
from adafruit_seesaw.pwmout import PWMOut
import displayio
from adafruit_st7735r import ST7735R

BUTTON_RIGHT = const(7)
BUTTON_DOWN = const(4)
BUTTON_LEFT = const(3)
BUTTON_UP = const(2)
BUTTON_SEL = const(11)
BUTTON_A = const(10)
BUTTON_B = const(9)

Buttons = namedtuple("Buttons", "up down left right a b select")


[docs]class MiniTFTFeatherWing: """Class representing an `Mini Color TFT with Joystick FeatherWing <https://www.adafruit.com/product/3321>`_. Automatically uses the feather's I2C bus.""" _button_mask = ( (1 << BUTTON_RIGHT) | (1 << BUTTON_DOWN) | (1 << BUTTON_LEFT) | (1 << BUTTON_UP) | (1 << BUTTON_SEL) | (1 << BUTTON_A) | (1 << BUTTON_B) ) # pylint: disable-msg=too-many-arguments def __init__(self, address=0x5E, i2c=None, spi=None, cs=None, dc=None): displayio.release_displays() if i2c is None: i2c = board.I2C() if spi is None: spi = board.SPI() if cs is None: cs = board.D5 if dc is None: dc = board.D6 self._ss = Seesaw(i2c, address) self._ss.pin_mode_bulk(self._button_mask, self._ss.INPUT_PULLUP) self._ss.pin_mode(8, self._ss.OUTPUT) self._ss.digital_write(8, True) # Reset the Display via Seesaw self._backlight = PWMOut(self._ss, 5) self._backlight.duty_cycle = 0 display_bus = displayio.FourWire(spi, command=dc, chip_select=cs) self.display = ST7735R( display_bus, width=160, height=80, colstart=24, rotation=270, bgr=True ) # pylint: enable-msg=too-many-arguments @property def backlight(self): """ Return the current backlight duty cycle value """ return self._backlight.duty_cycle / 255 @backlight.setter def backlight(self, brightness): """ Set the backlight duty cycle """ self._backlight.duty_cycle = int(255 * min(max(brightness, 0.0), 1.0)) @property def buttons(self): """ Return a set of buttons with current push values """ try: button_values = self._ss.digital_read_bulk(self._button_mask) except OSError: return Buttons( *[ False for button in ( BUTTON_UP, BUTTON_DOWN, BUTTON_LEFT, BUTTON_RIGHT, BUTTON_A, BUTTON_B, BUTTON_SEL, ) ] ) return Buttons( *[ not button_values & (1 << button) for button in ( BUTTON_UP, BUTTON_DOWN, BUTTON_LEFT, BUTTON_RIGHT, BUTTON_A, BUTTON_B, BUTTON_SEL, ) ] )