# The MIT License (MIT)
#
# Copyright (c) 2019 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_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._backlight = PWMOut(self._ss, 5)
self._backlight.duty_cycle = 0
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
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)
self._ss.pin_mode_bulk(self._button_mask, self._ss.INPUT_PULLUP)
#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)])