# 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
try:
from typing import Optional
from busio import I2C, SPI
from microcontroller import Pin
except ImportError:
pass
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: int = 0x5E,
i2c: Optional[I2C] = None,
spi: Optional[SPI] = None,
cs_pin: Optional[Pin] = None,
dc_pin: Optional[Pin] = None,
):
displayio.release_displays()
if i2c is None:
i2c = board.I2C()
if spi is None:
spi = board.SPI()
if cs_pin is None:
cs_pin = board.D5
if dc_pin is None:
dc_pin = 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_pin, chip_select=cs_pin)
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: float):
"""
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,
)
]
)