3e4dd4c0bc
In addition to the clock scene, both the animation scene and the weather scene should now work under MicroPython on devices with 520kBytes of RAM (e.g. LoPy 1, WiPy 2) after: - combating heap fragmentation during initialization by temporarily allocating a large chunk of RAM in the beginning of main.py and freeing it after all modules have been imported and initialized - stream parsing the JSON response from the weather API - converting animations to binary and streaming them from the flash file system (additionally, older ESP8266 modules with 4MB flash have been found working under some circumstances with MicroPython 1.9.4 and an 8x8 LED matrix) - 3D parts: add diffuser grid and frame for square LED matrix displays - Arduino projects needs to be in a folder with the same name as the .ino file - config: allow multiple WiFi networks to be configured - config: add support for debug flags - config: add intensity configuration - HAL: unify serial input processing for Arduino and Pycom devices - HAL: handle UART write failures on Pycom devices - HAL: drop garbage collection from .update_display() because it takes several hundred milliseconds on 4MB devices - MCU: clear display when enabling/disabling MCU independence from host - PixelFont: move data to class attributes to reduce memory usage - PixelFont: add more characters - PixelFont: move data generation to scripts/generate-pixelfont.py - LedMatrix: support LED matrixes with strides other than 8 (e.g. as 16x16 matrices) - LedMatrix: add method to render text - LedMatrix: let consumers handle brightness themselves - AnimationScene: MicroPython does not implement bytearray.find - AnimationScene: ensure minimum on-screen time - BootScene: wifi connection and RTC sync progress for Pycom devices - ClockScene: delete unused code, switch to generic text rendering method - FireScene: classical fire effect - WeatherScene: bug fixes, switch to generic text rendering method - WeatherScene: ensure minimum on-screen time - WeatherScene: use custom JSON parsing to reduce memory usage
108 lines
3.2 KiB
Python
Executable File
108 lines
3.2 KiB
Python
Executable File
# This file implements a simple clock scene displaying the current time.
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#
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# While it is primarily designed to be run on the host computer, an MCU
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# running MicroPython might run it to provide automatic rendering of
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# the current time while the host computer is offline.
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#
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import time
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if not hasattr(time, 'ticks_ms'):
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# Emulate https://docs.pycom.io/firmwareapi/micropython/utime.html
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time.ticks_ms = lambda: int(time.time() * 1000)
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# Local imports
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from pixelfont import PixelFont
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class ClockScene:
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def __init__(self, display, config):
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self.display = display
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self.button_state = 0
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self.debug = False
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self.intensity = 16
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self.date_was_shown = False
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self.columns = display.columns
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if not config:
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return
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if 'debug' in config:
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self.debug = config['debug']
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if 'intensity' in config:
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self.intensity = int(round(config['intensity']*255))
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def reset(self):
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pass
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def input(self, button_state):
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if button_state & 0x22:
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# Handle long-press on either button
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self.button_state ^= 1
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self.display.clear()
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return button_state & ~0x22
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return 0 # signal that we did not handle the button press
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def set_intensity(self, value=None):
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if value is not None:
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self.intensity -= 1
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if not self.intensity:
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self.intensity = 16
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return self.intensity
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def render(self, frame, dropped_frames, fps):
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"""
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Render the current time and day of week
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"""
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display = self.display
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intensity = self.intensity
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# Automatically switch to showing the date for a few secs
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tmp = fps << 6
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tmp = ((fps << 4) + frame) % tmp
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y_off = 1
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(year, month, day, hour, minute, second, weekday, _) = time.localtime()[:8]
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if not self.button_state and tmp > (fps<<2):
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if self.date_was_shown:
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display.clear()
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self.date_was_shown = False
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if self.columns == 32:
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text = ' {:02d}:{:02d} '.format(hour, minute)
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if (int(time.ticks_ms() // 100.0) % 10) < 4:
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text = text.replace(':', ' ')
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display.render_text(PixelFont, text, 2, y_off, intensity)
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else:
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text = '{:02d}'.format(hour)
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display.render_text(PixelFont, text, 4, y_off, intensity)
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text = '{:02d}'.format(minute)
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display.render_text(PixelFont, text, 4, y_off+8, intensity)
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else:
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if self.columns == 32:
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text = '{:02d}.{:02d}.{:02d}'.format(day, month, year % 100)
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display.render_text(PixelFont, text, 2, y_off, intensity)
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else:
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text = '{:02d}{:02d}'.format(day, month)
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display.render_text(PixelFont, text, 0, y_off, intensity)
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display.put_pixel(7, y_off+PixelFont.height, intensity, intensity, intensity)
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text = '{:04d}'.format(year)
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display.render_text(PixelFont, text, 0, y_off+8, intensity)
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self.date_was_shown = True
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x_off = 2 if self.columns == 32 else 1
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lower_intensity = intensity // 3
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for i in range(7):
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color = intensity if i == weekday else lower_intensity
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b = (color << 1) // 7
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display.put_pixel(x_off, 7, color, color, b)
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if self.columns == 32:
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display.put_pixel(x_off+1, 7, color, color, b)
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display.put_pixel(x_off+2, 7, color, color, b)
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x_off += 4
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else:
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x_off += 2
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display.render()
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if self.button_state == 2:
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self.button_state = 0
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# Signal that we want to be continued to be rendered
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return True
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