c499910df4
Replace the single beat-dot row with a full pad grid: each lane is a row of step pads coloured by dynamics (mute/normal/accent/ghost), with the playhead lit as it plays (per-lane, so polymeter shows). Header (title/BPM/RUN/item) is compacted above it; transport stays below. Pads are vectorio rects sharing one 8-colour palette and recolour in place via color_index (cheap, tear-free); the grid only rebuilds on track change. Caps at MAXLANES=5 rows (extra lanes still play). Verified by rendering the whole displayio scene graph headless (layout + playhead lighting correct). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
494 lines
22 KiB
Python
494 lines
22 KiB
Python
# VARASYS PolyMeter — PM_K-1 "Kit" firmware (CircuitPython edition)
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# Raspberry Pi Pico (Pico / Pico W / Pico 2) on the 52Pi EP-0172 "Pico Breadboard Kit Plus":
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# 3.5" ST7796 320x480 cap-touch (GT911), PSP joystick, WS2812 RGB, buzzer, 2 buttons.
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#
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# WHY CIRCUITPYTHON: the board then mounts as a USB drive (CIRCUITPY) carrying this code, your
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# tracks (programs.json) and a copy of the editor — edit on the web, "Save to device" writes
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# programs.json here, and CircuitPython auto-reloads with the new grooves. (USB-MIDI audio out
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# to the computer comes in a later phase.) Runs the SAME program strings as metronome.varasys.io.
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#
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# INSTALL: flash CircuitPython (https://circuitpython.org/board/raspberry_pi_pico/), then copy
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# this file as code.py plus programs.json onto the CIRCUITPY drive. It runs on boot.
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#
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# Fallback: the simpler MicroPython firmware (pico/main.py) is always available — BOOTSEL +
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# drag a MicroPython .uf2 to go back. The Pico cannot be bricked.
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#
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# Untested-panel notes & calibration flags are in CONFIG + pico-cp/README.md.
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import board, busio, digitalio, analogio, pwmio, displayio, vectorio, time, json, gc
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try: # CircuitPython 9.x
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from fourwire import FourWire
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from busdisplay import BusDisplay
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except ImportError: # CircuitPython 8.x
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from displayio import FourWire
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from displayio import Display as BusDisplay
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try:
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import neopixel_write # core module on RP2040 — drives WS2812 with no external library
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except ImportError:
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neopixel_write = None
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# ============================== CONFIG (tweak if needed) ==============================
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SPI_BAUD = 40_000_000
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WIDTH, HEIGHT = 320, 480
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MADCTL = 0x48 # portrait; 0x48 swaps R/B for this BGR panel (cyan reads cyan). Use 0x40 if reversed.
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INVERT_COLORS = True # most ST7796 modules need inversion ON; set False if colours look negative
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# Touch (GT911) — flip if taps land wrong:
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TOUCH_SWAP_XY = False
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TOUCH_INVERT_X = False
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TOUCH_INVERT_Y = False
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TOUCH_DEBUG = False
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# Joystick:
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JOY_INVERT_X = False
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JOY_INVERT_Y = False
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JOY_DEADZONE = 9000
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# ----- pins (fixed by the EP-0172 board) -----
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P_SCK, P_MOSI, P_CS, P_DC, P_RST = board.GP2, board.GP3, board.GP5, board.GP6, board.GP7
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P_SDA, P_SCL = board.GP8, board.GP9
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P_RGB, P_BUZ, P_BTNA, P_BTNB = board.GP12, board.GP13, board.GP15, board.GP14
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P_JOYX, P_JOYY = board.GP26, board.GP27
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# ----- baked default grooves (used only if programs.json is missing/bad) -----
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DEFAULT_PROGRAMS = [
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("Four on the floor", "t120;kick:4;snare:4=.x.x;hatClosed:4/2"),
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("Swing ride", "t150;ride:4/2s;kick:4=X..x;snare:4=.x.x"),
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("7/8 (2+2+3)", "t130;kick:2+2+3=x..x..x;hatClosed:2+2+3/2"),
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("5 over 4", "t100;kick:4;claves:5~"),
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("Straight click", "t120;beep:4"),
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]
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# ============================== COLOURS (0xRRGGBB; displayio handles 565) ==============================
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C_BG, C_PANEL, C_TXT, C_MUTE = 0x06090E, 0x1C222C, 0xC7D0DB, 0x788494
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C_CYAN, C_AMBER, C_GREEN, C_DIM = 0x0AB3F7, 0xFF9B2E, 0x2FE07A, 0x243240
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C_BTN = 0x1C222C
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LEVEL_RGB = {2: (255, 110, 0), 1: (0, 150, 255), 3: (130, 70, 255)}
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MAXLANES = 5 # lanes shown on the pad grid (extras still play)
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PAD_DIM = (0x10161E, 0x0A3A52, 0x4A3010, 0x2A1D4A) # idle pad: mute / normal / accent / ghost
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PAD_LIT = (0x39414D, 0x0AB3F7, 0xFF9B2E, 0x967BFF) # playhead pad: mute / normal / accent / ghost
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# WS2812 RGB LED — self-contained via the core neopixel_write module (no external library)
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class RGB:
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def __init__(self, pin):
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self.ok = neopixel_write is not None
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if self.ok:
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self.io = digitalio.DigitalInOut(pin); self.io.direction = digitalio.Direction.OUTPUT
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self.buf = bytearray(3)
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def set(self, r, g, b):
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if not self.ok: return
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self.buf[0] = g; self.buf[1] = r; self.buf[2] = b # WS2812 wants GRB order
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try: neopixel_write.neopixel_write(self.io, self.buf)
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except Exception: self.ok = False
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# ============================== ANTI-ALIASED FONTS (binary blobs on the drive; see pico/gen_font.py) ==============================
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def load_font(path):
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with open(path, "rb") as f:
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blob = f.read()
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count = blob[0]; p = 1; pixoff = 1 + count * 7; glyphs = {}
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for _ in range(count):
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cp = (blob[p] << 8) | blob[p+1]; w = blob[p+2]; h = blob[p+3]
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xoff = blob[p+4]; xoff = xoff - 256 if xoff > 127 else xoff
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top = blob[p+5]; adv = blob[p+6]; p += 7
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glyphs[cp] = (w, h, xoff, top, adv, pixoff); pixoff += (w * h + 1) // 2
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return (glyphs, blob)
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FONT_M = load_font("/font_m.bin")
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FONT_L = load_font("/font_l.bin")
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gc.collect()
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def _blend(bg, fg, i):
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t = i * 17
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r = (((bg >> 16) & 0xFF)*(255-t) + ((fg >> 16) & 0xFF)*t) // 255
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g = (((bg >> 8) & 0xFF)*(255-t) + ((fg >> 8) & 0xFF)*t) // 255
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b = ((bg & 0xFF)*(255-t) + (fg & 0xFF)*t) // 255
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return (r << 16) | (g << 8) | b
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def make_text(s, font, fg, bg):
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"""Render a string into a displayio TileGrid (anti-aliased via a 16-step blend palette)."""
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glyphs, blob = font
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w = 0; top0 = 999; bot = 0
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for c in s:
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g = glyphs.get(ord(c))
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if not g: continue
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w += g[4]
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if g[1]:
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if g[3] < top0: top0 = g[3]
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if g[3] + g[1] > bot: bot = g[3] + g[1]
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if top0 == 999: top0 = 0
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w = max(1, w); h = max(1, bot - top0)
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gc.collect()
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bmp = displayio.Bitmap(w, h, 16)
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pal = displayio.Palette(16)
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for i in range(16): pal[i] = _blend(bg, fg, i)
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pen = 0
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for c in s:
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g = glyphs.get(ord(c))
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if not g: continue
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gw, gh, xoff, gtop, adv, off = g
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for j in range(gh):
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row = (gtop - top0) + j
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for i in range(gw):
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k = j * gw + i
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byte = blob[off + (k >> 1)]
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nib = (byte >> 4) if (k & 1) == 0 else (byte & 0xF)
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if nib:
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x = pen + xoff + i
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if 0 <= x < w and 0 <= row < h: bmp[x, row] = nib
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pen += adv
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return displayio.TileGrid(bmp, pixel_shader=pal), w, h
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# ============================== POLYMETER ENGINE (same semantics as the web/MicroPython) ==============================
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PAT = {'X': 2, 'x': 1, 'g': 3, '.': 0, '-': 0, '_': 0}
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PRIO = {2: 3, 1: 2, 3: 1}
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def parse_program(s):
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bpm = 120; lanes = []
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for tok in s.strip().split(';'):
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tok = tok.strip()
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if not tok: continue
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if tok[0] == 't' and tok[1:].isdigit():
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bpm = int(tok[1:]); continue
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if ':' not in tok: continue
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lane = _parse_lane(tok)
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if lane: lanes.append(lane)
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if not lanes: lanes = [_parse_lane("beep:4")]
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return max(30, min(300, bpm)), lanes
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def _parse_lane(tok):
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poly = '~' in tok; mute = '!' in tok
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tok = tok.replace('~', '').replace('!', '')
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if '@' in tok: tok = tok.split('@')[0]
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sound, _, rest = tok.partition(':')
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pattern = None
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if '=' in rest: rest, _, pattern = rest.partition('=')
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sub = 1
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if '/' in rest:
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rest, _, sd = rest.partition('/'); sd = sd.rstrip('s')
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sub = int(sd) if sd.isdigit() else 1
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groups = [int(g) for g in rest.split('+') if g.isdigit()] or [4]
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beats = sum(groups); starts = set(); acc = 0
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for gp in groups: starts.add(acc); acc += gp
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steps = beats * sub
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if pattern:
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levels = [PAT.get(ch, 0) for ch in pattern]
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if len(levels) < steps: levels += [0] * (steps - len(levels))
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steps = len(levels)
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else:
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levels = []
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for i in range(steps):
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if i % sub == 0: levels.append(2 if (i // sub) in starts else 1)
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else: levels.append(0)
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return {'sound': sound, 'sub': sub, 'steps': steps, 'levels': levels, 'poly': poly, 'mute': mute}
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def load_programs():
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try:
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with open("/programs.json") as f:
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d = json.load(f)
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progs = [(p["name"], p["prog"]) for p in d["programs"]]
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if progs: return progs
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except Exception as e:
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print("programs.json:", e)
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return DEFAULT_PROGRAMS
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# ============================== GT911 TOUCH ==============================
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class GT911:
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def __init__(self, i2c):
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self.i2c = i2c; self.addr = None
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while not i2c.try_lock(): pass
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try: found = i2c.scan()
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finally: i2c.unlock()
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for a in (0x5D, 0x14):
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if a in found: self.addr = a; break
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if self.addr is None and found: self.addr = found[0]
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def _rd(self, reg, n):
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b = bytearray(n)
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while not self.i2c.try_lock(): pass
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try:
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self.i2c.writeto(self.addr, bytes([reg >> 8, reg & 0xFF]))
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self.i2c.readfrom_into(self.addr, b)
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finally: self.i2c.unlock()
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return b
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def _wr(self, reg, val):
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while not self.i2c.try_lock(): pass
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try: self.i2c.writeto(self.addr, bytes([reg >> 8, reg & 0xFF, val]))
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finally: self.i2c.unlock()
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def read(self):
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if self.addr is None: return None
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try: st = self._rd(0x814E, 1)[0]
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except OSError: return None
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if not (st & 0x80): return None
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n = st & 0x0F; pt = None
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if n >= 1:
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b = self._rd(0x8150, 4); tx = b[0] | (b[1] << 8); ty = b[2] | (b[3] << 8)
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pt = self._map(tx, ty)
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try: self._wr(0x814E, 0)
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except OSError: pass
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return pt
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def _map(self, tx, ty):
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if TOUCH_DEBUG: print("touch raw", tx, ty)
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if TOUCH_SWAP_XY: tx, ty = ty, tx
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if TOUCH_INVERT_X: tx = WIDTH - 1 - tx
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if TOUCH_INVERT_Y: ty = HEIGHT - 1 - ty
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if 0 <= tx < WIDTH and 0 <= ty < HEIGHT: return (tx, ty)
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return None
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# ============================== DISPLAY SETUP ==============================
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def st7796_init():
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inv = b'\x21\x00' if INVERT_COLORS else b'\x20\x00'
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return (
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b'\x01\x80\x78' # SWRESET + 120ms
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b'\x11\x80\x78' # SLPOUT + 120ms
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b'\xF0\x01\xC3' b'\xF0\x01\x96' # command-set unlock
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+ bytes([0x36, 0x01, MADCTL]) +
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b'\x3A\x01\x55' # 16bpp
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b'\xB4\x01\x01'
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b'\xB6\x03\x80\x02\x3B'
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b'\xE8\x08\x40\x8A\x00\x00\x29\x19\xA5\x33'
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b'\xC1\x01\x06' b'\xC2\x01\xA7'
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b'\xC5\x81\x18\x78' # VCOM + 120ms
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b'\xE0\x0E\xF0\x09\x0B\x06\x04\x15\x2F\x54\x42\x3C\x17\x14\x18\x1B'
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b'\xE1\x0E\xE0\x09\x0B\x06\x04\x03\x2B\x43\x42\x3B\x16\x14\x17\x1B'
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b'\xF0\x01\x3C' b'\xF0\x81\x69\x78' # lock + 120ms
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+ inv +
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b'\x29\x80\x32' # DISPON + 50ms
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)
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def make_display():
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displayio.release_displays()
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spi = busio.SPI(clock=P_SCK, MOSI=P_MOSI)
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bus = FourWire(spi, command=P_DC, chip_select=P_CS, reset=P_RST, baudrate=SPI_BAUD)
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return BusDisplay(bus, st7796_init(), width=WIDTH, height=HEIGHT, auto_refresh=False)
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def solid(color):
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p = displayio.Palette(1); p[0] = color; return p
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def rect(x, y, w, h, color):
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return vectorio.Rectangle(pixel_shader=solid(color), width=w, height=h, x=x, y=y)
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# ============================== APP ==============================
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class App:
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def __init__(self):
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self.display = make_display()
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self.i2c = busio.I2C(scl=P_SCL, sda=P_SDA, frequency=400_000)
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self.touch = GT911(self.i2c)
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self.led = RGB(P_RGB)
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self.buz = pwmio.PWMOut(P_BUZ, frequency=1600, variable_frequency=True, duty_cycle=0)
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self.buz_off = 0
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self.btnA = self._btn(P_BTNA); self.btnB = self._btn(P_BTNB)
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self._aPrev = True; self._bPrev = True
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self.jx = analogio.AnalogIn(P_JOYX); self.jy = analogio.AnalogIn(P_JOYY)
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self._joyNext = 0
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self._touchDown = False; self._touchSeen = 0
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self.running = False; self.bpm = 120; self.idx = 0; self.lanes = []; self.rgb = (0, 0, 0)
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self.programs = load_programs()
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self.buttons = []
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self.dirty = True
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self.pad_pal = displayio.Palette(8)
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for i in range(4): self.pad_pal[i] = PAD_DIM[i]; self.pad_pal[i + 4] = PAD_LIT[i]
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self.lane_pads = []; self.lane_lit = []
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self._build_scene()
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self.load(0)
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def _btn(self, pin):
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d = digitalio.DigitalInOut(pin); d.direction = digitalio.Direction.INPUT; d.pull = digitalio.Pull.UP
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return d
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# ---------- scene graph ----------
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def _build_scene(self):
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root = displayio.Group(); self.display.root_group = root
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root.append(rect(0, 0, WIDTH, HEIGHT, C_BG))
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tg, w, h = make_text("PM_K-1 KIT", FONT_M, C_CYAN, C_BG); tg.x = 12; tg.y = 8; root.append(tg)
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root.append(rect(0, 38, WIDTH, 2, C_PANEL))
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# dynamic groups
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self.g_bpm = displayio.Group(); root.append(self.g_bpm) # big tempo (right)
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self.g_run = displayio.Group(); root.append(self.g_run) # RUN / STOP (left)
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self.g_name = displayio.Group(); root.append(self.g_name) # item index + name
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self.g_grid = displayio.Group(); root.append(self.g_grid) # lanes × step pads
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# buttons (rects static; labels in per-button groups so play can toggle)
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bw, bh = 96, 56; gap = (WIDTH - 3*bw)//4; xs = [gap, gap*2+bw, gap*3+bw*2]
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self.btn_lbl = {}
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rows = [(300, ("prev", "play", "next")), (372, ("minus", "tap", "plus"))]
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for y, keys in rows:
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for x, key in zip(xs, keys):
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root.append(rect(x, y, bw, bh, C_BTN))
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root.append(rect(x, y, bw, 2, C_PANEL)); root.append(rect(x, y+bh-2, bw, 2, C_PANEL))
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lg = displayio.Group(); root.append(lg); self.btn_lbl[key] = (lg, x+bw//2, y+bh//2)
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self.buttons.append((x, y, bw, bh, key))
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self._label(key)
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def _place(self, group, s, x, y, fg, bg, font, right_edge=None):
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while len(group): group.pop()
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self.dirty = True
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if not s: return
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tg, w, h = make_text(s, font, fg, bg)
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tg.x = (right_edge - w) if right_edge is not None else x; tg.y = y; group.append(tg)
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def _center(self, group, s, cx, cy, fg, bg, font):
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while len(group): group.pop()
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tg, w, h = make_text(s, font, fg, bg); tg.x = cx - w//2; tg.y = cy - h//2; group.append(tg)
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self.dirty = True
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def _label(self, key):
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sym = {"prev": "◀◀", "next": "▶▶", "minus": "-", "plus": "+", "tap": "TAP",
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"play": "■" if self.running else "▶"}[key]
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lg, cx, cy = self.btn_lbl[key]
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self._center(lg, sym, cx, cy, C_GREEN if key == "play" else C_TXT, C_BTN, FONT_M)
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# ---------- program ----------
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def load(self, i):
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n = len(self.programs); self.idx = i % n
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self.name, prog = self.programs[self.idx]
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self.bpm, self.lanes = parse_program(prog)
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self.master = self.lanes[0]
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self._reset_clock(); self.draw_bpm(); self.draw_status(); self.build_grid()
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def _reset_clock(self):
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now = time.monotonic_ns()
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for L in self.lanes:
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L['next'] = now; L['step'] = -1; L['dur'] = int(60_000_000_000 / self.bpm / L['sub'])
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# ---------- audio + light ----------
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def click(self, level):
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self.buz.frequency = {2: 2300, 1: 1600, 3: 1050}.get(level, 1600)
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self.buz.duty_cycle = {2: 42000, 1: 30000, 3: 14000}.get(level, 30000)
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self.buz_off = time.monotonic_ns() + 22_000_000
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def flash(self, level):
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self.rgb = LEVEL_RGB.get(level, (0, 150, 255))
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self.led.set(*self.rgb)
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def led_off(self):
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self.rgb = (0, 0, 0)
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self.led.set(0, 0, 0)
|
||
|
||
# ---------- transport ----------
|
||
def toggle(self):
|
||
self.running = not self.running
|
||
if self.running: self._reset_clock()
|
||
else: self.buz.duty_cycle = 0; self.led_off(); self.reset_playheads()
|
||
self.draw_status(); self._label("play")
|
||
def set_bpm(self, v):
|
||
v = max(30, min(300, v))
|
||
if v != self.bpm:
|
||
self.bpm = v
|
||
for L in self.lanes: L['dur'] = int(60_000_000_000 / self.bpm / L['sub'])
|
||
self.draw_bpm()
|
||
def goto(self, i):
|
||
was = self.running; self.load(i); self._label("play")
|
||
if was: self.running = True; self._reset_clock()
|
||
def tap(self):
|
||
now = time.monotonic()
|
||
if not hasattr(self, '_taps'): self._taps = []
|
||
self._taps = [t for t in self._taps if now - t < 2.4]
|
||
self._taps.append(now)
|
||
if len(self._taps) >= 2:
|
||
span = (self._taps[-1] - self._taps[0]) / (len(self._taps) - 1)
|
||
if span > 0: self.set_bpm(round(60 / span))
|
||
|
||
# ---------- scheduler ----------
|
||
def tick(self):
|
||
now = time.monotonic_ns()
|
||
if self.buz_off and now >= self.buz_off: self.buz.duty_cycle = 0; self.buz_off = 0
|
||
if self.running:
|
||
fired = []
|
||
for li, L in enumerate(self.lanes):
|
||
adv = False
|
||
while now >= L['next']:
|
||
L['step'] = (L['step'] + 1) % L['steps']
|
||
lvl = 0 if L['mute'] else L['levels'][L['step']]
|
||
if lvl > 0: fired.append(lvl)
|
||
L['next'] += L['dur']; adv = True
|
||
if adv and li < len(self.lane_pads): self._move_playhead(li, L['step'])
|
||
if fired:
|
||
best = max(fired, key=lambda l: PRIO.get(l, 0)); self.click(best); self.flash(best)
|
||
if self.rgb != (0, 0, 0):
|
||
r, g, b = self.rgb; r = r*7//10; g = g*7//10; b = b*7//10
|
||
self.rgb = (r, g, b) if (r+g+b) > 12 else (0, 0, 0)
|
||
self.led.set(*self.rgb)
|
||
|
||
# ---------- inputs ----------
|
||
def poll(self):
|
||
a = self.btnA.value
|
||
if (not a) and self._aPrev: self.toggle()
|
||
self._aPrev = a
|
||
b = self.btnB.value
|
||
if (not b) and self._bPrev: self.tap()
|
||
self._bPrev = b
|
||
now = time.monotonic_ns()
|
||
if now >= self._joyNext:
|
||
x = self.jx.value - 32768; y = self.jy.value - 32768
|
||
if JOY_INVERT_X: x = -x
|
||
if JOY_INVERT_Y: y = -y
|
||
if abs(y) > JOY_DEADZONE:
|
||
self.set_bpm(self.bpm + (1 if y > 0 else -1) * (5 if abs(y) > 26000 else 1))
|
||
self._joyNext = now + 70_000_000
|
||
elif abs(x) > JOY_DEADZONE:
|
||
self.goto(self.idx + (1 if x > 0 else -1)); self._joyNext = now + 350_000_000; return
|
||
else:
|
||
self._joyNext = now + 20_000_000
|
||
pt = self.touch.read()
|
||
nowms = time.monotonic()
|
||
if pt:
|
||
self._touchSeen = nowms
|
||
if not self._touchDown:
|
||
self._touchDown = True; self.hit(pt[0], pt[1])
|
||
elif self._touchDown and (nowms - self._touchSeen) > 0.14:
|
||
self._touchDown = False
|
||
|
||
def hit(self, x, y):
|
||
for bx, by, bw, bh, key in self.buttons:
|
||
if bx <= x <= bx+bw and by <= y <= by+bh:
|
||
if key == 'play': self.toggle()
|
||
elif key == 'prev': self.goto(self.idx - 1)
|
||
elif key == 'next': self.goto(self.idx + 1)
|
||
elif key == 'minus': self.set_bpm(self.bpm - 1)
|
||
elif key == 'plus': self.set_bpm(self.bpm + 1)
|
||
elif key == 'tap': self.tap()
|
||
return
|
||
|
||
# ---------- drawing ----------
|
||
def draw_bpm(self):
|
||
self._place(self.g_bpm, str(self.bpm), 0, 44, C_TXT, C_BG, FONT_L, right_edge=WIDTH-12)
|
||
def draw_status(self):
|
||
self._place(self.g_run, "RUN" if self.running else "STOP", 12, 48,
|
||
C_GREEN if self.running else C_MUTE, C_BG, FONT_M)
|
||
self._place(self.g_name, "%d/%d %s" % (self.idx+1, len(self.programs), self.name[:18]),
|
||
12, 112, C_TXT, C_BG, FONT_M)
|
||
|
||
# ---------- pad grid (each lane = a row of step pads; playhead lit as it plays) ----------
|
||
def _padbase(self, L, s):
|
||
return 0 if L['mute'] else L['levels'][s]
|
||
def build_grid(self):
|
||
while len(self.g_grid): self.g_grid.pop()
|
||
self.lane_pads = []; self.lane_lit = []
|
||
n = min(len(self.lanes), MAXLANES)
|
||
top = 140; rowh = min(38, (294 - top) // max(1, n))
|
||
for li in range(n):
|
||
L = self.lanes[li]; y = top + li * rowh
|
||
tg, w, h = make_text((L.get('sound', '') or '?')[:4], FONT_M, C_MUTE, C_BG)
|
||
tg.x = 10; tg.y = y + 2; self.g_grid.append(tg)
|
||
steps = L['steps']; px0 = 66; pw = (WIDTH - 10 - px0) // steps; ph = max(8, rowh - 10)
|
||
pads = []
|
||
for s in range(steps):
|
||
r = vectorio.Rectangle(pixel_shader=self.pad_pal, width=max(2, pw - 1), height=ph, x=px0 + s*pw, y=y)
|
||
r.color_index = self._padbase(L, s); self.g_grid.append(r); pads.append(r)
|
||
self.lane_pads.append(pads); self.lane_lit.append(-1)
|
||
self.dirty = True
|
||
def _move_playhead(self, li, step):
|
||
pads = self.lane_pads[li]; prev = self.lane_lit[li]
|
||
if 0 <= prev < len(pads): pads[prev].color_index = self._padbase(self.lanes[li], prev)
|
||
if step < len(pads): pads[step].color_index = self._padbase(self.lanes[li], step) + 4
|
||
self.lane_lit[li] = step; self.dirty = True
|
||
def reset_playheads(self):
|
||
for li, pads in enumerate(self.lane_pads):
|
||
prev = self.lane_lit[li]
|
||
if 0 <= prev < len(pads): pads[prev].color_index = self._padbase(self.lanes[li], prev)
|
||
self.lane_lit[li] = -1
|
||
self.dirty = True
|
||
|
||
def run(self):
|
||
if self.touch.addr is None:
|
||
print("GT911 touch not found")
|
||
while True:
|
||
self.tick(); self.poll()
|
||
# push a complete frame only when something changed (no mid-update tearing);
|
||
# capped at the display's refresh rate, so dirty regions stay small and quick
|
||
if self.dirty and self.display.refresh():
|
||
self.dirty = False
|
||
time.sleep(0.0005)
|
||
|
||
App().run()
|