kopia lustrzana https://github.com/russhughes/st7789py_mpy
69 wiersze
1.4 KiB
Python
69 wiersze
1.4 KiB
Python
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"""
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scroll.py
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=========
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.. figure:: ../_static/scroll.jpg
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:align: center
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Test for hardware scrolling.
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Smoothly scrolls all font characters up the screen.
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Only works with fonts with heights that are even multiples of the screen height,
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(i.e. 8 or 16 pixels high)
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.. note:: This example requires the following modules:
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.. hlist::
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:columns: 3
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- `st7789py`
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- `tft_config`
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- `vga2_bold_16x16`
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"""
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import utime
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import random
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import st7789py as st7789
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import tft_config
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import vga2_bold_16x16 as font
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def main():
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""" main """
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tft = tft_config.config(tft_config.SCROLL)
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last_line = tft.height - font.HEIGHT
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tfa = tft_config.TFA # top free area when scrolling
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bfa = tft_config.BFA # bottom free area when scrolling
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tft.vscrdef(tfa, 240, bfa)
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tft.fill(st7789.BLUE)
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scroll = 0
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character = 0
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col = tft.width // 2 - 5 * font.WIDTH // 2
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while True:
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tft.fill_rect(0, scroll, tft.width, 1, st7789.BLUE)
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if scroll % font.HEIGHT == 0:
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tft.text(
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font,
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f'x{character:02x} {chr(character)}',
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col,
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(scroll + last_line) % tft.height,
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st7789.WHITE,
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st7789.BLUE)
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character = character + 1 if character < 256 else 0
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tft.vscsad(scroll + tfa)
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scroll += 1
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if scroll == tft.height:
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scroll = 0
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utime.sleep(0.01)
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main()
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