RT-4D: реверс прошивки, русификация, кастомный UI, флешеры

- Полный RE стока V3.25 (Cortex-M4F) + FM100B: карта памяти, протокол, codeplug, UI-архитектура
- Русификация: свой CP1251-шрифт + патч рендера, перевод меню и надписей, ребренд Ru-4D V3.25
- Блюпринт переделки UI + C-тулчейн (clang thumbv7em), доказан инъекцией
- Готовые флешеры: WebSerial .html и Windows .exe со вшитой прошивкой
- Дамп SPI рации, стоковая прошивка, инструменты сборки

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

research/probe12.py

@@ -0,0 +1,53 @@
+import io
+data = open(r"C:/Users/vikto/Documents/Claude/rt-4d/radio-spi-dump.bin","rb").read()
+out=io.open(r"C:/Users/vikto/Documents/Claude/rt-4d/analyze/out12.txt","w",encoding="utf-8")
+
+def render(off):
+    lines=[]
+    for r in range(16):
+        line=""
+        for cb in range(2):
+            b=data[off+r*2+cb]
+            for bit in range(8):
+                line += "#" if (b>>bit)&1 else "."
+        lines.append(line)
+    return lines
+
+# find best global alignment offset (0..31) that maximizes clean glyphs across 0x198000..0x242000
+# metric: fraction of glyphs whose first & last rows are blank-ish and have connected mass
+import statistics
+def glyph_score(off):
+    g=data[off:off+32]
+    if all(b==0 for b in g) or all(b==0xff for b in g): return None
+    rows=[(g[2*r]|(g[2*r+1]<<8)) for r in range(16)]
+    setbits=sum(bin(x).count('1') for x in rows)
+    if setbits<8 or setbits>200: return 0
+    # top & bottom rows mostly empty is typical
+    edge = (bin(rows[0]).count('1')<=3) + (bin(rows[15]).count('1')<=3)
+    return edge
+
+best=None
+for align in range(0,32,2):
+    base=0x198000+0x4000+align  # start well past pinyin table
+    scores=[]
+    for g in range(2000):
+        off=base+g*32
+        s=glyph_score(off)
+        if s is not None: scores.append(s)
+    if scores:
+        avg=sum(scores)/len(scores)
+        if best is None or avg>best[1]:
+            best=(align,avg)
+out.write("best align offset within 32: %r\n"%(best,))
+
+# count non-empty 32-byte glyph cells in whole region for a glyph-count estimate
+region=data[0x19c000:0x242000]
+ng=len(region)//32
+nonempty=0
+for g in range(ng):
+    cell=region[g*32:g*32+32]
+    if any(b not in (0,0xff) for b in cell): nonempty+=1
+out.write("region 0x19c000-0x242000: %d 32-byte cells, %d non-empty (~glyphs)\n"%(ng,nonempty))
+out.write("A GB2312 full font would be ~7000-8000 glyphs.\n")
+out.close()
+print("done")