feat: WiFi驱动(ath9k) + TTF字体 + shell命令行 + FirstInit WiFi跳过

新增: ath9k PCIe WiFi驱动(被动扫描/beacon解析), shell命令行(help/clear/echo/version/date/reboot/halt), Consolas 18px TTF字体, render_ascii.py

修改: dkm_net_api扩展scan接口, FirstInit无WiFi设备时跳过, DSK加载shell.elf, 非首次启动直接进shell

CODE/font/render_ascii.py

@@ -0,0 +1,54 @@
+"""render_ascii.py — render ASCII 32-126 from Consolas TTF to grayscale bitmaps
+Output: CODE/firstInit/ascii_bitmaps.c (included by main.c)
+
+Glyph cell: 11x18. Consolas 18px has advance=10, ascender top ~3, descender ~18.
+ASCII_STEP=11 gives 1px spacing between glyphs (10px glyph + 1px gap).
+"""
+from PIL import Image, ImageFont, ImageDraw
+
+ttf = r"C:\Windows\Fonts\consola.ttf"
+GLYPH_W = 11
+GLYPH_H = 18
+FONT_SIZE = 18
+
+font = ImageFont.truetype(ttf, FONT_SIZE)
+
+# Verify metrics on first glyph
+probe = font.getbbox("A")
+print(f"Consolas {FONT_SIZE}px — 'A' bbox={probe}, advance={font.getlength('A')}")
+
+lines = []
+lines.append("/* Auto-generated by render_ascii.py - Consolas 18px grayscale */")
+lines.append("/* 95 glyphs: ASCII 32 (space) .. 126 (~), cell 11x18 */")
+lines.append("/* Do not edit - regenerate via: py render_ascii.py */")
+lines.append("")
+lines.append(f"static const int g_ascii_w = {GLYPH_W};")
+lines.append(f"static const int g_ascii_h = {GLYPH_H};")
+lines.append(f"static const unsigned char g_ascii[95][{GLYPH_W}*{GLYPH_H}] = {{")
+
+for cp in range(32, 127):
+    ch = chr(cp)
+    img = Image.new("L", (GLYPH_W, GLYPH_H), 0)
+    draw = ImageDraw.Draw(img)
+    draw.text((0, 0), ch, font=font, fill=255)
+    pixels = list(img.tobytes())
+    if ch.isalnum():
+        comment = ch
+    elif ch == ' ':
+        comment = "space"
+    else:
+        comment = f"0x{cp:02x}"
+    lines.append(f"  /* '{comment}' */ {{")
+    for y_row in range(GLYPH_H):
+        row = ", ".join(str(pixels[y_row * GLYPH_W + x_col]) for x_col in range(GLYPH_W))
+        lines.append(f"    {row},")
+    lines.append("  },")
+
+lines.append("};")
+lines.append("")
+
+out_path = "CODE/firstInit/ascii_bitmaps.c"
+with open(out_path, "w", encoding="ascii") as f:
+    f.write("\n".join(lines))
+
+print(f"Generated {out_path} ({95*GLYPH_W*GLYPH_H} bytes of glyph data)")