Add Bad Apple on STM32F4 (WiP; timer is still missing)

# Copyright 2020 Birte Kristina Friesel

#

# SPDX-License-Identifier: CC0-1.0

prompt "Bad Apple on STM32F4 + SSD1306 128x64 LCD"

depends on arch_stm32f446re_nucleo

#depends on meta_driver_timer

depends on driver_ssd1306 && driver_ssd1306_mode_horizontal

depends on lib_inflate && lib_inflate_lut

depends on !loop

depends on !wakeup

# vim:ft=make

#

# Copyright 2020 Birte Kristina Friesel

#

# SPDX-License-Identifier: CC0-1.0

ifdef app

	override arch_drivers += i2c,timer

	CONFIG_driver_ssd1306 = y

	COMMON_FLAGS += -DCONFIG_driver_ssd1306

	CONFIG_driver_ssd1306_width = 128

	CONFIG_driver_ssd1306_height = 64

	CONFIG_lib_inflate = y

	CONFIG_lib_inflate_lut = y

	CONFIG_arch_msp430fr5994lp_large_mode = y

endif

#!/bin/sh

# [size=WxH] ./convert.sh <file> -r <frame rate> [additional ffmpeg args]

set -eu

mkdir -p tmp

ffmpeg -i "$@" tmp/frame%4d.png

parallel mogrify -resize "${size:-128x64}" -threshold 50% -- tmp/*.png

echo "const unsigned char frame_rate = $3;" > frames.cc

./frames-to-cc tmp/*.png >> frames.cc

rm -rf tmp

#!/usr/bin/env python3

from PIL import Image

import os

import sys

import zlib

buf_w, buf_h = map(int, os.getenv("size", "128x64").split("x"))

def load_image(filename):

    im = Image.open(filename)

    w, h = im.size

    buf = [0 for i in range(buf_w * buf_h // 8)]

    for y in range(min(h, buf_h)):

        for x in range(min(w, buf_w)):

            if im.getpixel((x, y)):

                buf[(y // 8) * buf_w + x] |= 1 << (y % 8)

    return buf

for i in range(1, len(sys.argv) - 2, 3):

    buf = (

        load_image(sys.argv[i])

        + load_image(sys.argv[i + 1])

        + load_image(sys.argv[i + 2])

    )

    c_buf = ",".join(map(str, buf))

    z_buf = zlib.compress(bytes(buf), 9)

    z_buf = z_buf[2:-4]

    out_buf = ",".join(map(str, z_buf))

    print(

        f'__attribute__((section(".text"))) unsigned char const frame{i:04d}[] = {{ {out_buf} }};'

    )

frames = list()

for i in range(1, len(sys.argv) - 2, 3):

    frames.append(f"(unsigned char*)frame{i:04d}")

prefix = '__attribute__((section(".text"))) unsigned char* const frames[] = {'

postfix = "};"

print(prefix + ", ".join(frames) + postfix)