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Monorepo for Aesthetic.Computer aesthetic.computer
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Python
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143#!/usr/bin/env python3"""Send progressively-larger slabs of the slide to find which sectiontriggers E2. After each slab we read OE; — first non-zero readingidentifies the offending section."""
from __future__ import annotations
import osimport sysimport timefrom pathlib import Path
import serial
XON, XOFF = 0x11, 0x13
SECTIONS = [ ("init", ["IN;DT\x03;DI1,0;LT;SP1;VS25;FS2;\n"]), ("title", ["SI1.476,2.214;PA-7969,3500;LBnotepat.com keymap\x03\n"]), ("divider", ["PU;PA-7567,3050;PD;PA7567,3050;PU;\n"]), ("piano-naturals",[]), # filled below ("piano-sharps", []), ("qwerty-row1", []), ("qwerty-row2", []), ("qwerty-row3", []), ("connectors", []), ("tagline", []), ("urls", []), ("park", ["LT;PU;PA0,0;SP0;\n"]),]
# Reuse the actual HPGL we generate by parsing the existing file into the# section buckets. Simpler: just send the file in halves first.FILE = Path("/Users/jas/aesthetic-computer/plotters/hp7585b/notepat-slide.hpgl")data = FILE.read_text()lines = data.splitlines(keepends=True)
# Split lines into sections by content heuristics.naturals, sharps, q1, q2, q3, conns, tag, urls, post = [], [], [], [], [], [], [], [], []phase = "header"for ln in lines: if ln.startswith("IN;") or ln.startswith("PU;PA-7567"): continue # init/divider already in SECTIONS if "LBnotepat.com keymap" in ln: continue # piano naturals: y range 1200..2500, the "labelled" lines if "LB" in ln and "1370" in ln and len(ln.split("LB")[-1]) <= 3: naturals.append(ln); continue # piano sharps: double_rect calls — y at 1700..2500 and 1760..2440 if ("EA" in ln) and ("1700" in ln or "1760" in ln or "2500" in ln) and "PA-" in ln and "1200" not in ln: sharps.append(ln); continue # QWERTY row 1 ytop=800 if "EA" in ln and "800" in ln and "-100" in ln: q1.append(ln); continue if "LB" in ln and "200" in ln and "y" in "": q1.append(ln); continue # ... fall back: dump remaining into post post.append(ln)
# This heuristic is rough — instead just split file into 4 quarters.quarters = [data[i:i+len(data)//4] for i in range(0, len(data), len(data)//4)]
def open_port(): s = serial.Serial("/dev/cu.usbserial-110", 9600, bytesize=8, parity=serial.PARITY_NONE, stopbits=1, xonxoff=False, rtscts=True, dsrdtr=True, timeout=0.5) s.setDTR(True); s.setRTS(True) return s
def ask(ser, cmd): ser.reset_input_buffer() ser.write(cmd); ser.flush() deadline = time.time() + 1.0 buf = bytearray() while time.time() < deadline: c = ser.read(64) if c: for b in c: if b not in (XON, XOFF): buf.append(b) if b"\n" in buf or b"\r" in buf: break else: time.sleep(0.05) return buf.decode("ascii", errors="replace").strip()
def send_slow(ser, payload: bytes): """Send with 256-byte frames + 2ms/byte + 30ms/frame.""" i = 0 while i < len(payload): # cut on ; or ETX boundary, max 256 end = min(i + 256, len(payload)) if end < len(payload): cut = payload.rfind(b";", i, end + 1) if cut > i: end = cut + 1 chunk = payload[i:end] for b in chunk: ser.write(bytes([b])) time.sleep(0.002) ser.flush() time.sleep(0.030) i = end
def main(): ser = open_port() try: # always start with init + clear error print("clearing error...") ask(ser, b"OE;") time.sleep(0.5) cumulative = b"" for idx, q in enumerate(quarters, 1): print(f"\n=== sending quarter {idx}/{len(quarters)} ({len(q)} bytes) ===") cumulative += q.encode("ascii") # we resend cumulative each time so plotter state is consistent # but that's expensive — instead just send the new piece. send_slow(ser, q.encode("ascii")) time.sleep(2.0) err = ask(ser, b"OE;") print(f" OE; -> {err}") if err.strip() and err.strip() != "0": print(f" *** ERROR after quarter {idx} ***") # save the quarter to disk for inspection Path(f"/tmp/quarter-{idx}.hpgl").write_text(q) print(f" payload saved to /tmp/quarter-{idx}.hpgl") # park the pen ask(ser, b"PU;PA0,0;SP0;") return 1 print("\nall quarters clean") ask(ser, b"PU;PA0,0;SP0;") finally: ser.close() return 0
if __name__ == "__main__": sys.exit(main())