# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

# Quick test of 3.5" TFT FeatherWing (HX8357) with Feather M0 or M4
# Will fill the TFT black and put a red pixel in the center, wait 2 seconds,
# then fill the screen blue (with no pixel), wait 2 seconds, and repeat.
import random
import time

import board
import digitalio

from adafruit_rgb_display import hx8357
from adafruit_rgb_display.rgb import color565

# Configuration for CS and DC pins (these are TFT FeatherWing defaults):
cs_pin = digitalio.DigitalInOut(board.D9)
dc_pin = digitalio.DigitalInOut(board.D10)

# Config for display baudrate (default max is 24mhz):
BAUDRATE = 24000000

# Setup SPI bus using hardware SPI:
spi = board.SPI()

# Create the HX8357 display:
display = hx8357.HX8357(spi, cs=cs_pin, dc=dc_pin, baudrate=BAUDRATE)

# Main loop:
while True:
    # Fill the screen red, green, blue, then black:
    for color in ((255, 0, 0), (0, 255, 0), (0, 0, 255)):
        display.fill(color565(color))
    # Clear the display
    display.fill(0)
    # Draw a red pixel in the center.
    display.pixel(display.width // 2, display.height // 2, color565(255, 0, 0))
    # Pause 2 seconds.
    time.sleep(2)
    # Clear the screen a random color
    display.fill(color565(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))
    # Pause 2 seconds.
    time.sleep(2)