Momentum-Apps/mp_flipper/examples/flipperzero_canvas_test.py

import time
import flipperzero

color = False


def draw_action():
    print("on draw")

    global color

    for x in range(0, 128):
        color = not color

        for y in range(0, 64):
            flipperzero.canvas_set_color(
                flipperzero.CANVAS_BLACK if color else flipperzero.CANVAS_WHITE
            )
            flipperzero.canvas_draw_dot(x, y)

            color = not color

    color = not color

    flipperzero.canvas_set_text(64, 32, "Test")

    flipperzero.canvas_update()


print("start")

draw_action()

for _ in range(1, 5):
    time.sleep(1)

    draw_action()