commit d03691451f819ac2347336fc154aa350164538dc
Author: lhx <liy200110@163.com>
Date:   Tue Jun 9 10:19:38 2026 +0800

    初始化

diff --git a/__pycache__/ir_send.cpython-313.pyc b/__pycache__/ir_send.cpython-313.pyc
new file mode 100644
index 0000000..46295ef
Binary files /dev/null and b/__pycache__/ir_send.cpython-313.pyc differ
diff --git a/ir_bruteforce.py b/ir_bruteforce.py
new file mode 100644
index 0000000..a190165
--- /dev/null
+++ b/ir_bruteforce.py
@@ -0,0 +1,362 @@
+# -*- coding: utf-8 -*-
+"""
+红外板 — 发送协议穷举测试
+========================
+从接收已知: 客户码=3BC4, 方向键=0D/10/15/12
+逐个尝试常见红外板发送格式，找出正确的那一个。
+
+用法:
+    python ir_bruteforce.py -p COM8            # 自动试探所有协议
+    python ir_bruteforce.py -p COM8 -k 0D      # 指定键值测试
+    python ir_bruteforce.py -p COM8 --list     # 列出所有候选协议
+
+每次发送后观察投影仪是否有反应，按 y/n 确认，脚本记录有效协议。
+"""
+
+import sys
+import time
+import argparse
+import itertools
+import serial
+import serial.tools.list_ports
+
+
+BAUDRATE = 9600
+
+# 已知参数
+CUSTOMER_CODE = bytes([0x3B, 0xC4])  # 客户码
+KEY_CODES = {
+    "up":    0x0D,  # 上
+    "left":  0x10,  # 左
+    "down":  0x15,  # 下
+    "right": 0x12,  # 右
+}
+
+
+def build_frame(proto_name: str, key: int) -> bytes | None:
+    """
+    根据协议名构建发送帧。
+
+    常见红外板发送协议:
+      - raw3:        直接 3 字节 [客户码H, 客户码L, 键值]
+      - nec_std:     NEC 标准帧 [地址, ~地址, 命令, ~命令]
+      - nec_3B:      地址 0x3B (单字节) 的 NEC [0x3B, 0xC4, key, ~key]
+      - a5_prefix:   A5 前缀协议 [A5, len, 数据..., checksum]
+      - aa_prefix:   AA 前缀协议 [AA, 数据..., sum]
+      - text_crlf:   文本协议 "SEND xxxxxx\\r\\n"
+      - text_no_cr:  文本协议 "3BC40D"
+      - at_cmd:      AT 指令 "AT+IR=xxxxxx\\r\\n"
+      - nec_full:    NEC 完整帧 [addrL, addrH, cmd, ~cmd] (带反码)
+    """
+
+    hi, lo = CUSTOMER_CODE[0], CUSTOMER_CODE[1]
+
+    # ── 原始字节类 ──
+    if proto_name == "raw3":
+        return bytes([hi, lo, key])
+
+    if proto_name == "raw3_reversed":
+        return bytes([key, lo, hi])
+
+    if proto_name == "raw3_with_cr":
+        return bytes([hi, lo, key, 0x0D])
+
+    if proto_name == "raw3_with_crlf":
+        return bytes([hi, lo, key, 0x0D, 0x0A])
+
+    # ── NEC 标准变体 ──
+    if proto_name == "nec_3bytes":
+        # 最简 NEC: 地址 + 命令 (不带反码)
+        return bytes([hi, lo, key])
+
+    if proto_name == "nec_addr_inv":
+        # NEC: [地址, ~地址, 命令, ~命令]
+        return bytes([hi, hi ^ 0xFF, key, key ^ 0xFF])
+
+    if proto_name == "nec_addr_inv_both":
+        # NEC 有时用两字节地址: [addrL, addrH, cmd, ~cmd]
+        return bytes([lo, hi, key, key ^ 0xFF])
+
+    if proto_name == "nec_no_invert":
+        # 只发地址+命令，不做反码
+        return bytes([lo, key])
+
+    if proto_name == "nec_lo_cmd":
+        # [0x3B, key] — 只有客户码低字节+键值
+        return bytes([lo, key])
+
+    if proto_name == "nec_hi_cmd":
+        # [0x3B, 0xC4, key] — raw3 即此格式
+        return bytes([hi, key])
+
+    # ── 带前缀/帧头 ──
+    if proto_name == "a5_f5":
+        # 常见: [A5, len, data..., sum]
+        data = bytes([hi, lo, key])
+        frame = bytes([0xA5, len(data)]) + data
+        csum = sum(frame) & 0xFF
+        return frame + bytes([csum])
+
+    if proto_name == "a5_f5_nosum":
+        data = bytes([hi, lo, key])
+        return bytes([0xA5, len(data)]) + data
+
+    if proto_name == "aa_55":
+        data = bytes([hi, lo, key])
+        csum = sum(data) & 0xFF
+        return bytes([0xAA, 0x55]) + data + bytes([csum])
+
+    if proto_name == "aa_55_nosum":
+        return bytes([0xAA, 0x55, hi, lo, key])
+
+    if proto_name == "ff_prefix":
+        return bytes([0xFF, 0xFF, hi, lo, key])
+
+    if proto_name == "fe_prefix":
+        return bytes([0xFE, hi, lo, key, 0xFD])
+
+    if proto_name == "a0_prefix":
+        return bytes([0xA0, hi, lo, key, 0x0A])
+
+    # ── 文本协议类 ──
+    hex_str = f"{hi:02X}{lo:02X}{key:02X}"
+
+    if proto_name == "text_hex":
+        return hex_str.encode("ascii")
+
+    if proto_name == "text_hex_cr":
+        return (hex_str + "\r").encode("ascii")
+
+    if proto_name == "text_hex_crlf":
+        return (hex_str + "\r\n").encode("ascii")
+
+    if proto_name == "text_hex_nl":
+        return (hex_str + "\n").encode("ascii")
+
+    if proto_name == "text_send":
+        return f"SEND {hex_str}".encode("ascii")
+
+    if proto_name == "text_send_crlf":
+        return f"IR_SEND={hex_str}\r\n".encode("ascii")
+
+    if proto_name == "text_at_crlf":
+        return f"AT+IR={hex_str}\r\n".encode("ascii")
+
+    if proto_name == "text_at_send_crlf":
+        return f"AT+SEND={hex_str}\r\n".encode("ascii")
+
+    # ── 带空格分隔的十六进制文本 ──
+    if proto_name == "text_spaced_crlf":
+        return f"{hi:02X} {lo:02X} {key:02X}\r\n".encode("ascii")
+
+    if proto_name == "text_spaced_nl":
+        return f"{hi:02X} {lo:02X} {key:02X}\n".encode("ascii")
+
+    # ── 先发命令再发数据 ──
+    if proto_name == "cmd_tx_data":
+        # 先发 TX 命令，延时 50ms，再发数据
+        return None  # 特殊处理
+
+    if proto_name == "cmd_0x01_prefix":
+        return bytes([0x01, hi, lo, key])
+
+    if proto_name == "cmd_0x02_prefix":
+        return bytes([0x02, hi, lo, key])
+
+    if proto_name == "cmd_0x03_prefix":
+        return bytes([0x03, hi, lo, key])
+
+    return None
+
+
+# ═══════════════════════════════════════════════════════════════
+# 所有候选协议 (按可能性排序)
+# ═══════════════════════════════════════════════════════════════
+
+PROTOCOLS = [
+    # ── 最可能的: 二进制直发 ──
+    ("raw3",              "二进制3字节 [3B C4 XX]"),
+    ("raw3_reversed",     "二进制3字节反转 [XX C4 3B]"),
+    ("raw3_with_cr",      "二进制3字节 + CR [3B C4 XX 0D]"),
+    ("raw3_with_crlf",    "二进制3字节 + CRLF [3B C4 XX 0D 0A]"),
+
+    # ── NEC 变体 ──
+    ("nec_3bytes",        "NEC简化 3字节 [3B C4 XX]"),
+    ("nec_addr_inv",      "NEC标准 [addr, ~addr, cmd, ~cmd]"),
+    ("nec_addr_inv_both", "NEC双字节地址 [C4 3B XX ~XX]"),
+    ("nec_lo_cmd",        "NEC短帧 [C4 XX]"),
+    ("nec_hi_cmd",        "NEC短帧 [3B XX]"),
+    ("nec_no_invert",     "NEC无反码 [C4 XX]"),
+
+    # ── 带帧头 ──
+    ("a5_f5",             "A5帧头+校验 [A5 03 3B C4 XX SUM]"),
+    ("a5_f5_nosum",       "A5帧头无校验 [A5 03 3B C4 XX]"),
+    ("aa_55",             "AA55帧头 [AA 55 3B C4 XX SUM]"),
+    ("aa_55_nosum",       "AA55帧头无校验 [AA 55 3B C4 XX]"),
+    ("ff_prefix",         "FF前缀 [FF FF 3B C4 XX]"),
+    ("fe_prefix",         "FE帧 [FE 3B C4 XX FD]"),
+    ("a0_prefix",         "A0前缀 [A0 3B C4 XX 0A]"),
+    ("cmd_0x01_prefix",   "01前缀 [01 3B C4 XX]"),
+    ("cmd_0x02_prefix",   "02前缀 [02 3B C4 XX]"),
+    ("cmd_0x03_prefix",   "03前缀 [03 3B C4 XX]"),
+
+    # ── 文本协议 ──
+    ("text_hex",          "文本HEX \"3BC40D\""),
+    ("text_hex_cr",       "文本HEX+CR"),
+    ("text_hex_crlf",     "文本HEX+CRLF"),
+    ("text_hex_nl",       "文本HEX+LF"),
+    ("text_spaced_crlf",  "文本空格HEX \"3B C4 0D\\r\\n\""),
+    ("text_spaced_nl",    "文本空格HEX \"3B C4 0D\\n\""),
+    ("text_send",         "文本 \"SEND 3BC40D\""),
+    ("text_send_crlf",    "文本 \"IR_SEND=3BC40D\\r\\n\""),
+    ("text_at_crlf",      "AT指令 \"AT+IR=3BC40D\\r\\n\""),
+    ("text_at_send_crlf", "AT指令 \"AT+SEND=3BC40D\\r\\n\""),
+]
+
+
+def scan_usb_ttl():
+    """自动找 USB-to-TTL 端口"""
+    ports = serial.tools.list_ports.comports()
+    keywords = ["ch343", "ch340", "ch341", "usb-enhanced-serial",
+                "usb serial", "ft232", "cp210", "pl2303", "wch"]
+    for p in ports:
+        combined = f"{p.description or ''} {p.hwid or ''}".lower()
+        if any(kw in combined for kw in keywords):
+            return p.device
+    all_p = list(ports)
+    return all_p[0].device if all_p else None
+
+
+def brute_force(port: str, key_hex: str = "0D", start_from: int = 0):
+    """
+    逐个尝试所有协议。
+    每次发送后等待用户确认 (y=有效/n=无效/q=退出)
+    """
+    key = int(key_hex, 16)
+    hi, lo = CUSTOMER_CODE[0], CUSTOMER_CODE[1]
+    hex_3b = f"{hi:02X}{lo:02X}{key:02X}"
+
+    print(f"串口: {port} @ {BAUDRATE}bps")
+    print(f"客户码: {hi:02X} {lo:02X}")
+    print(f"测试键值: {key:02X} ({hex_3b})")
+    print(f"候选协议: {len(PROTOCOLS)} 个\n")
+
+    ser = serial.Serial(port, baudrate=BAUDRATE, timeout=0.3)
+    print("=" * 65)
+    print("  发送后观察投影仪是否响应，输入 y/n/q")
+    print("=" * 65)
+
+    working = []
+    total = len(PROTOCOLS)
+    skipped = 0
+
+    for i, (name, desc) in enumerate(PROTOCOLS):
+        if i < start_from:
+            skipped += 1
+            continue
+
+        frame = build_frame(name, key)
+
+        # 特殊协议: 先发送 "TX" 命令再发数据
+        if name == "cmd_tx_data":
+            try:
+                ser.write(b"TX\r\n")
+                ser.flush()
+                time.sleep(0.05)
+                ser.write(bytes([hi, lo, key]))
+                ser.flush()
+            except Exception as e:
+                print(f"  [{i+1}/{total}] {name}: 发送失败 - {e}")
+                continue
+            print(f"\n[{i+1}/{total}] {name}")
+            print(f"  描述: {desc}")
+            print(f"  发送: TX\\r\\n → [3B C4 {key:02X}]")
+
+        elif frame is not None:
+            try:
+                ser.reset_output_buffer()
+                ser.write(frame)
+                ser.flush()
+            except Exception as e:
+                print(f"  [{i+1}/{total}] {name}: 发送失败 - {e}")
+                continue
+
+            print(f"\n[{i+1}/{total}] {name}")
+            print(f"  描述: {desc}")
+            print(f"  HEX:  {frame.hex(' ').upper()}")
+            if all(32 <= b < 127 for b in frame):
+                print(f"  ASCII: {frame.decode('ascii')}")
+
+        else:
+            continue
+
+        # 用户确认
+        while True:
+            resp = input("  有效? [y/n/q/s(跳过)]: ").strip().lower()
+            if resp == 'y':
+                working.append((name, desc, frame.hex(" ").upper() if frame else "TX+data"))
+                print(f"  ✓ 已记录")
+                break
+            elif resp == 'n':
+                break
+            elif resp == 'q':
+                print(f"\n已测试 {i+1-skipped}/{total}")
+                ser.close()
+                return working
+            elif resp == 's':
+                print(f"  跳过")
+                break
+            else:
+                print("  请输入 y(有效) / n(无效) / q(退出)")
+
+        time.sleep(0.1)
+
+    ser.close()
+
+    print(f"\n测试完成: {i+1-skipped}/{total}")
+    return working
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="红外板发送协议 — 穷举测试",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+    parser.add_argument("-p", "--port", default=None, help="串口 (如 COM8)")
+    parser.add_argument("-k", "--key", default="0D",
+                        help=f"测试键值 hex (默认 0D=上). 已知: {', '.join(f'{k}={v:02X}' for k,v in KEY_CODES.items())}")
+    parser.add_argument("-s", "--start", type=int, default=0,
+                        help="从第 N 个协议开始 (断点续测)")
+    parser.add_argument("--list", action="store_true", help="列出所有候选协议")
+    args = parser.parse_args()
+
+    if args.list:
+        print("候选发送协议:")
+        for i, (name, desc) in enumerate(PROTOCOLS):
+            print(f"  [{i+1:>2}] {name:<22} {desc}")
+        return
+
+    port = args.port or scan_usb_ttl()
+    if not port:
+        print("✗ 未找到串口。用 -p 指定")
+        return
+
+    results = brute_force(port, args.key, start_from=args.start)
+
+    if results:
+        print("\n" + "=" * 65)
+        print("  有效协议:")
+        for name, desc, frame_hex in results:
+            print(f"  ✓ {name}: {desc}")
+            print(f"    HEX: {frame_hex}")
+    else:
+        print("\n✗ 没有找到有效协议。")
+        print("  可能原因:")
+        print("  1. 波特率不是 9600 — 用 --auto-baud 再测")
+        print("  2. 发送和接收需不同波特率")
+        print('  3. 红外板需要先发送"进入发送模式"的指令')
+        print("  4. 换个键值试试 -k 15")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/ir_diag.py b/ir_diag.py
new file mode 100644
index 0000000..17358e5
--- /dev/null
+++ b/ir_diag.py
@@ -0,0 +1,316 @@
+# -*- coding: utf-8 -*-
+"""
+红外板 — 收发联合诊断
+====================
+一边发送候选协议帧，一边同时读取串口返回，
+看板子收到数据后有没有任何回应（ACK/NAK/回显等）。
+
+同时抓取原始遥控信号的完整原始字节（不合并，带时间戳），
+检查是否有被 IDLE_TIMEOUT 截断的帧头/帧尾。
+
+用法:
+    python ir_diag.py -p COM8                      # 诊断模式1: 重新抓遥控信号
+    python ir_diag.py -p COM8 --echo               # 诊断模式2: 发送+监听回应
+    python ir_diag.py -p COM8 --boot               # 诊断模式3: 捕获上电启动信息
+"""
+
+import sys
+import time
+import argparse
+import serial
+import serial.tools.list_ports
+
+BAUDRATE = 9600
+
+# 已知数据
+CUSTOMER_HI = 0x3B
+CUSTOMER_LO = 0xC4
+KEY_CODES = {0x0D: "上", 0x15: "下", 0x10: "左", 0x12: "右"}
+
+
+def find_port():
+    """自动找 USB-to-TTL"""
+    ports = serial.tools.list_ports.comports()
+    keywords = ["ch343", "ch340", "ch341", "usb-enhanced-serial",
+                "usb serial", "ft232", "cp210", "pl2303", "wch"]
+    for p in ports:
+        combined = f"{p.description or ''} {p.hwid or ''}".lower()
+        if any(kw in combined for kw in keywords):
+            return p.device
+    all_p = list(ports)
+    return all_p[0].device if all_p else None
+
+
+# ═══════════════════════════════════════════════════════════════
+# 模式1: 详细捕获原始遥控信号 (逐字节, 不合并)
+# ═══════════════════════════════════════════════════════════════
+
+def capture_remote_detail(port: str):
+    """
+    逐字节捕获，每个字节都带时间戳。
+    可能发现: 帧头(如 AA 55)、长度字节、校验和等之前被忽略的字节。
+    """
+    print(f"打开 {port} @ {BAUDRATE} baud")
+    print("请按遥控器按键... (Ctrl+C 退出)\n")
+
+    ser = serial.Serial(port, baudrate=BAUDRATE, timeout=0.1)
+    print(f"{'时间':<12} {'字节':<6} {'HEX':<8} {'BIN':<12} {'ASCII'}")
+    print("-" * 65)
+
+    last_time = time.time()
+
+    try:
+        while True:
+            try:
+                n = ser.in_waiting
+            except serial.SerialException:
+                break
+
+            if n > 0:
+                now = time.time()
+                gap = now - last_time
+                data = ser.read(n)
+
+                for i, b in enumerate(data):
+                    ascii_ch = chr(b) if 32 <= b < 127 else "."
+                    ts = time.strftime("%H:%M:%S") + f".{int((now % 1) * 1000):03d}"
+
+                    if i == 0 and gap > 0.3:
+                        # 新的红外信号 — 画分隔线
+                        print(f"\n{'─' * 65}")
+                        print(f"  新信号 ↑ 距上次 {gap:.1f}s")
+                    print(f"{ts:<12} [{i+1}/{n}]  {b:02X}     {b:08b}    {ascii_ch}")
+
+                last_time = now
+            else:
+                time.sleep(0.01)
+
+    except KeyboardInterrupt:
+        pass
+    finally:
+        ser.close()
+
+    print("\n✓ 诊断完成。检查上面的字节序列:")
+    print("  1. 每次按键是否只有 3 个字节?")
+    print("  2. 前后有没有额外的帧头/帧尾字节?")
+    print("  3. 字节间有没有明显的停顿(说明是分帧发送)?")
+
+
+# ═══════════════════════════════════════════════════════════════
+# 模式2: 发送并监听回应
+# ═══════════════════════════════════════════════════════════════
+
+# 候选发送协议 — 带"编号"以便快速定位有效协议
+CANDIDATES = [
+    # (名称, 帧bytes)
+    ("raw_3bytes",         bytes([0x3B, 0xC4, 0x0D])),
+    ("raw_3bytes_rev",     bytes([0x0D, 0xC4, 0x3B])),
+    ("raw_plus_CR",        bytes([0x3B, 0xC4, 0x0D, 0x0D])),
+    ("raw_plus_CRLF",      bytes([0x3B, 0xC4, 0x0D, 0x0D, 0x0A])),
+    ("NEC_std",            bytes([0x3B, 0xC4, 0x0D, 0xF2])),
+    ("NEC_addr_inv",       bytes([0x3B, 0xC4 ^ 0xFF, 0x0D, 0x0D ^ 0xFF])),
+    ("A5_frame",           bytes([0xA5, 0x03, 0x3B, 0xC4, 0x0D])),
+    ("A5_frame_sum",       bytes([0xA5, 0x03, 0x3B, 0xC4, 0x0D, 0xE9])),
+    ("AA55_frame",         bytes([0xAA, 0x55, 0x3B, 0xC4, 0x0D])),
+    ("AA55_frame_sum",     bytes([0xAA, 0x55, 0x3B, 0xC4, 0x0D, 0xA2])),
+    ("FF_prefix",          bytes([0xFF, 0xFF, 0x3B, 0xC4, 0x0D])),
+    ("FE_FD_frame",        bytes([0xFE, 0x3B, 0xC4, 0x0D, 0xFD])),
+    ("A0_prefix",          bytes([0xA0, 0x3B, 0xC4, 0x0D, 0x0A])),
+    ("01_prefix",          bytes([0x01, 0x3B, 0xC4, 0x0D])),
+    ("AT_send_crlf",       b"AT+SEND=3BC40D\r\n"),
+    ("text_hex_crlf",      b"3BC40D\r\n"),
+    ("text_spaced_crlf",   b"3B C4 0D\r\n"),
+    ("text_send_crlf",     b"SEND 3BC40D\r\n"),
+    ("text_at_crlf",       b"AT+IR=3BC40D\r\n"),
+    ("IR_SEND_crlf",       b"IR_SEND=3BC40D\r\n"),
+]
+
+
+def send_and_listen(port: str):
+    """
+    发送每个候选帧，然后立即监听串口回应。
+    使用非阻塞读取: 发完等100ms，把期间收到的所有字节打印出来。
+    """
+    print(f"打开 {port} @ {BAUDRATE} baud")
+    print("收发联合诊断 — 每个协议发送后监听板子是否有回应\n")
+
+    ser = serial.Serial(port, baudrate=BAUDRATE, timeout=0.1)
+
+    for i, (name, frame) in enumerate(CANDIDATES):
+        # 清空接收缓冲
+        ser.reset_input_buffer()
+        ser.reset_output_buffer()
+
+        # 发送
+        try:
+            ser.write(frame)
+            ser.flush()
+        except serial.SerialException as e:
+            print(f"  [{i+1:>2}] {name}: ✗ 发送失败 — {e}")
+            continue
+
+        # 等待回应 (给板子足够的处理时间)
+        time.sleep(0.15)
+
+        # 读取所有可用数据
+        response = bytearray()
+        while True:
+            n = ser.in_waiting
+            if n == 0:
+                break
+            response.extend(ser.read(n))
+            time.sleep(0.02)
+
+        # 打印结果
+        resp_str = ""
+        if response:
+            resp_str = f"← 板子回应 {len(response)}B: {response.hex(' ').upper()}"
+            try:
+                ascii_str = response.decode("ascii", errors="replace").strip()
+                if ascii_str:
+                    resp_str += f"  [{ascii_str}]"
+            except Exception:
+                pass
+
+        print(f"  [{i+1:>2}] {name}")
+        print(f"     发送: {frame.hex(' ').upper()}")
+        if resp_str:
+            print(f"     {resp_str}")
+        else:
+            print(f"     (板子无回应)")
+
+        time.sleep(0.05)
+
+    ser.close()
+
+    print("\n" + "=" * 65)
+    print("分析要点:")
+    print("  1. 有回应的 → 可能是板子返回了 ACK/NAK/回显，说明协议接近")
+    print("  2. 回应 = 发送内容 → 回显模式，说明板子期望特定格式")
+    print("  3. 回应包含 'OK'/'ERROR' 等 → 文本协议")
+    print("  4. 全无回应 → 要么协议全错，要么板子是单向的(不回显)")
+    print("\n提示: 同时也用手机摄像头看红外LED是否发光")
+
+
+# ═══════════════════════════════════════════════════════════════
+# 模式3: 上电启动捕获
+# ═══════════════════════════════════════════════════════════════
+
+def capture_boot(port: str):
+    """
+    打开串口后立即开始接收，看板子有没有上电启动信息。
+    也尝试切换 DTR (部分板子用 DTR 供电/复位)。
+    """
+    print("上电诊断 — 捕获板子启动信息\n")
+    print("提示: 拔掉 USB-to-TTL 再插入，然后按 Enter 继续...")
+    input()
+
+    # 先用 DTR 低电平"复位"
+    try:
+        ser = serial.Serial(port, baudrate=BAUDRATE, timeout=0.1)
+        ser.dtr = False
+        time.sleep(0.5)
+        ser.dtr = True
+        print(f"已打开 {port} (DTR 复位完成)")
+    except serial.SerialException as e:
+        print(f"✗ 无法打开 {port}: {e}")
+        return
+
+    print("等待板子启动输出... (10s)\n")
+
+    buffer = bytearray()
+    start = time.time()
+
+    try:
+        while time.time() - start < 10:
+            n = ser.in_waiting
+            if n > 0:
+                data = ser.read(n)
+                buffer.extend(data)
+                # 有数据就打印
+                ts = time.strftime("%H:%M:%S")
+                print(f"  [{ts}] {data.hex(' ').upper()}", end="")
+                try:
+                    ascii_str = data.decode("ascii", errors="replace").strip()
+                    if ascii_str:
+                        print(f"  [{ascii_str}]")
+                    else:
+                        print()
+                except Exception:
+                    print()
+                start = time.time()  # 有新数据就重置计时
+            else:
+                time.sleep(0.05)
+    except KeyboardInterrupt:
+        pass
+    finally:
+        ser.close()
+
+    if buffer:
+        print(f"\n启动阶段共收到 {len(buffer)} 字节:")
+        print(f"  HEX: {buffer.hex(' ').upper()}")
+        try:
+            text = buffer.decode("ascii", errors="replace")
+            if text.strip():
+                print(f"  ASCII: {text.strip()}")
+        except Exception:
+            pass
+    else:
+        print("\n无启动输出 — 板子不发送启动信息")
+
+
+# ═══════════════════════════════════════════════════════════════
+# 综合诊断: 以上全部
+# ═══════════════════════════════════════════════════════════════
+
+def run_all(port: str):
+    """运行全部诊断"""
+    print("=" * 65)
+    print("  阶段1: 上电启动捕获")
+    print("=" * 65)
+    capture_boot(port)
+
+    print("\n" + "=" * 65)
+    print("  阶段2: 详细遥控信号捕获")
+    print("=" * 65)
+    capture_remote_detail(port)
+
+    print("\n" + "=" * 65)
+    print("  阶段3: 发送+监听回应")
+    print("=" * 65)
+    send_and_listen(port)
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="红外板 — 收发联合诊断",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+    parser.add_argument("-p", "--port", default=None, help="串口")
+    parser.add_argument("--boot", action="store_true", help="捕获上电启动信息")
+    parser.add_argument("--echo", action="store_true", help="发送候选协议+监听回应")
+    parser.add_argument("--capture", action="store_true", help="详细捕获遥控信号")
+    parser.add_argument("--all", action="store_true", help="运行全部诊断")
+    args = parser.parse_args()
+
+    port = args.port or find_port()
+    if not port:
+        print("✗ 未找到串口。请用 -p 指定。")
+        return
+    print(f"串口: {port}")
+
+    if args.all:
+        run_all(port)
+    elif args.boot:
+        capture_boot(port)
+    elif args.echo:
+        send_and_listen(port)
+    elif args.capture:
+        capture_remote_detail(port)
+    else:
+        # 默认: 全部运行
+        run_all(port)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/ir_receive.py b/ir_receive.py
new file mode 100644
index 0000000..feac0ef
--- /dev/null
+++ b/ir_receive.py
@@ -0,0 +1,290 @@
+# -*- coding: utf-8 -*-
+"""
+红外收发板 — 接收测试
+=====================
+USB转TTL 连接红外收发板，接收并显示红外信号数据。
+
+用法:
+    python ir_receive.py                    # 自动查找串口, 9600 波特率
+    python ir_receive.py --ports            # 仅扫描串口
+    python ir_receive.py -p COM5            # 指定端口
+    python ir_receive.py -p COM5 -b 115200  # 指定端口和波特率
+    python ir_receive.py -p COM5 --hex-only # 仅显示十六进制
+
+依赖: pip install pyserial
+"""
+
+import sys
+import time
+import argparse
+import serial
+import serial.tools.list_ports
+
+
+# ═══════════════════════════════════════════════════════════════
+# 常见红外板串口波特率 (按优先级排列)
+# ═══════════════════════════════════════════════════════════════
+COMMON_BAUDRATES = [9600, 115200, 57600, 19200, 38400, 4800, 2400]
+
+# CH34x / 常见 USB-to-TTL 芯片 VID:PID
+USB_TTL_CHIPS = {
+    (0x1A86, 0x55D3): "CH343",
+    (0x1A86, 0x55D4): "CH344",
+    (0x1A86, 0x7523): "CH340",
+    (0x1A86, 0x5523): "CH341",
+    (0x1A86, 0x55D5): "CH342",
+    (0x0403, 0x6001): "FT232",
+    (0x067B, 0x2303): "PL2303",
+    (0x10C4, 0xEA60): "CP2102",
+}
+
+USB_TTL_KEYWORDS = [
+    "ch343", "ch340", "ch341", "ch342", "ch344",
+    "usb-enhanced-serial", "usb serial", "usb-serial",
+    "ft232", "ftdi", "cp210", "pl2303", "wch",
+]
+
+
+def scan_ports():
+    """扫描所有串口，标注 USB-to-TTL 设备"""
+    ports = serial.tools.list_ports.comports()
+    results = []
+
+    print("=" * 70)
+    print(f"{'端口':<8} {'芯片':<10} {'VID:PID':<12} {'描述'}")
+    print("-" * 70)
+
+    for port in ports:
+        vid_pid = (port.vid, port.pid) if port.vid and port.pid else None
+        chip = USB_TTL_CHIPS.get(vid_pid, "")
+        if not chip:
+            combined = f"{port.description or ''} {port.hwid or ''}".lower()
+            for kw in USB_TTL_KEYWORDS:
+                if kw in combined:
+                    chip = "USB-TTL"
+                    break
+
+        info = {
+            "device": port.device,
+            "description": port.description or "",
+            "vid": port.vid,
+            "pid": port.pid,
+            "chip": chip or None,
+        }
+        results.append(info)
+
+        vid_str = f"{port.vid:04X}:{port.pid:04X}" if vid_pid else "N/A"
+        chip_str = chip or "-"
+        print(f"{port.device:<8} {chip_str:<10} {vid_str:<12} {port.description or ''}")
+
+    print("=" * 70)
+    return results
+
+
+def find_usb_ttl_port():
+    """自动查找 USB-to-TTL 串口"""
+    ports = serial.tools.list_ports.comports()
+    candidates = []
+
+    for port in ports:
+        combined = f"{port.description or ''} {port.hwid or ''}".lower()
+        if any(kw in combined for kw in USB_TTL_KEYWORDS):
+            candidates.append(port)
+
+    if candidates:
+        p = candidates[0]
+        print(f"→ 自动选择: {p.device} — {p.description}")
+        return p.device
+
+    # 回退: 返回第一个可用端口
+    all_ports = list(ports)
+    if all_ports:
+        p = all_ports[0]
+        print(f"→ 回退使用: {p.device} — {p.description}")
+        return p.device
+
+    return None
+
+
+def try_connect(port: str, baudrate: int, timeout: float = 1.0) -> serial.Serial | None:
+    """尝试以指定波特率打开串口"""
+    try:
+        ser = serial.Serial(
+            port=port,
+            baudrate=baudrate,
+            bytesize=serial.EIGHTBITS,
+            parity=serial.PARITY_NONE,
+            stopbits=serial.STOPBITS_ONE,
+            timeout=timeout,
+        )
+        return ser
+    except serial.SerialException:
+        return None
+
+
+def format_hex(data: bytes) -> str:
+    """格式化十六进制显示"""
+    return data.hex(" ").upper()
+
+
+def format_binary(data: bytes) -> str:
+    """格式化二进制显示"""
+    return " ".join(f"{b:08b}" for b in data)
+
+
+def run_receiver(port: str, baudrate: int, hex_only: bool = False):
+    """
+    主接收循环 — 持续读取串口数据并显示。
+    按 Ctrl+C 退出。
+    """
+    print(f"\n打开串口 {port} @ {baudrate} baud...")
+    ser = try_connect(port, baudrate, timeout=0.5)
+    if ser is None:
+        print(f"✗ 无法打开 {port}")
+        return
+
+    print(f"✓ 已连接。等待红外信号... (按 Ctrl+C 退出)\n")
+    print("-" * 70)
+
+    buffer = bytearray()
+    last_print_time = time.time()
+    IDLE_PRINT_THRESHOLD = 0.15  # 空闲超过此秒数则打印之前累积的数据
+
+    try:
+        while True:
+            try:
+                waiting = ser.in_waiting
+            except (serial.SerialException, OSError) as e:
+                print(f"\n✗ 串口断开: {e}")
+                break
+
+            if waiting > 0:
+                try:
+                    chunk = ser.read(waiting)
+                except serial.SerialException:
+                    break
+                buffer.extend(chunk)
+                last_print_time = time.time()
+            else:
+                # 空闲时: 如果缓冲区有数据且空闲足够久，打印
+                if buffer and (time.time() - last_print_time) > IDLE_PRINT_THRESHOLD:
+                    data = bytes(buffer)
+                    timestamp = time.strftime("%H:%M:%S")
+
+                    if hex_only:
+                        print(f"[{timestamp}] ({len(data)}B) {format_hex(data)}")
+                    else:
+                        print(f"[{timestamp}] 收到 {len(data)} 字节")
+                        print(f"  HEX:  {format_hex(data)}")
+                        print(f"  BIN:  {format_binary(data)}")
+                        # 尝试 ASCII 解码
+                        try:
+                            ascii_str = data.decode("ascii")
+                            if ascii_str.isprintable():
+                                print(f"  ASCII: {ascii_str.strip()}")
+                        except UnicodeDecodeError:
+                            pass
+                        print()
+
+                    buffer.clear()
+
+                time.sleep(0.02)
+
+    except KeyboardInterrupt:
+        print("\n\n用户中断")
+
+    finally:
+        ser.close()
+        print(f"✓ 已关闭 {port}")
+
+
+def auto_baudrate_test(port: str):
+    """
+    波特率自动探测 — 提示用户按红外遥控器，
+    在不同波特率下监听，看哪个能收到有效数据。
+    """
+    print("\n" + "=" * 70)
+    print("  波特率自动探测")
+    print("=" * 70)
+    print("请持续按红外遥控器任意键...\n")
+
+    for baud in COMMON_BAUDRATES:
+        print(f"  测试 {baud:>6} baud ... ", end="", flush=True)
+        ser = try_connect(port, baud, timeout=0.3)
+        if ser is None:
+            print("无法打开")
+            continue
+
+        # 等待一小段时间收集数据
+        received = bytearray()
+        deadline = time.time() + 2.0
+        while time.time() < deadline:
+            try:
+                n = ser.in_waiting
+                if n > 0:
+                    received.extend(ser.read(n))
+            except serial.SerialException:
+                break
+            time.sleep(0.05)
+
+        ser.close()
+
+        if received:
+            print(f"收到 {len(received)} 字节! → {format_hex(bytes(received))}")
+        else:
+            print("无数据")
+
+    print("\n提示: 有数据的波特率即为正确波特率。")
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="红外收发板 — 接收测试",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+示例:
+  %(prog)s                          自动查找串口, 9600bps, 持续接收
+  %(prog)s --ports                  仅扫描串口
+  %(prog)s -p COM5                  指定端口接收
+  %(prog)s -p COM5 -b 115200       指定端口和波特率
+  %(prog)s -p COM5 --auto-baud     自动探测波特率
+  %(prog)s -p COM5 --hex-only      仅显示十六进制
+        """,
+    )
+    parser.add_argument("-p", "--port", default=None, help="串口 (如 COM5)")
+    parser.add_argument("-b", "--baudrate", type=int, default=9600, help="波特率 (默认 9600)")
+    parser.add_argument("--ports", action="store_true", help="仅扫描串口")
+    parser.add_argument("--auto-baud", action="store_true", help="自动探测波特率")
+    parser.add_argument("--hex-only", action="store_true", help="仅显示十六进制")
+    args = parser.parse_args()
+
+    # 仅扫描
+    if args.ports:
+        scan_ports()
+        return
+
+    # 确定端口
+    port = args.port
+    if port is None:
+        print("未指定端口，自动扫描 USB-to-TTL 设备...\n")
+        scan_ports()
+        port = find_usb_ttl_port()
+        if port is None:
+            print("\n✗ 未找到任何串口。请检查:")
+            print("  1. USB-to-TTL 是否已插入")
+            print("  2. 设备管理器中是否出现 COM 口")
+            print("  3. 驱动是否已安装")
+            return
+        print()
+
+    # 自动探测波特率
+    if args.auto_baud:
+        auto_baudrate_test(port)
+        return
+
+    # 持续接收
+    run_receiver(port, args.baudrate, hex_only=args.hex_only)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/ir_send.py b/ir_send.py
new file mode 100644
index 0000000..035772e
--- /dev/null
+++ b/ir_send.py
@@ -0,0 +1,529 @@
+# -*- coding: utf-8 -*-
+"""
+红外收发板 — 发送脚本 (投影仪遥控)
+===================================
+通过 USB-TTL 连接红外收发板，发送红外信号控制投影仪。
+
+协议说明 (来自板子文档):
+  发送红外信号: {A1, F1, <红外码3字节>}
+  修改通信地址: {A1, F2, <新地址>, 00, 00}
+  修改波特率:   {A1, F3, <速率编号>, 00, 00}
+
+  其中:
+    A1 = 帧头
+    F1 = 发射红外指令
+    F2 = 修改通信地址
+    F3 = 修改波特率
+
+用法:
+    python ir_send.py -p COM8 up           # 上
+    python ir_send.py -p COM8 down         # 下
+    python ir_send.py -p COM8 left         # 左
+    python ir_send.py -p COM8 right        # 右
+    python ir_send.py -p COM8 --raw 3BC40D # 发送原始红外码
+    python ir_send.py -p COM8 -i           # 交互模式 (w/s/a/d 方向键控制)
+
+依赖: pip install pyserial
+"""
+
+import sys
+import time
+import argparse
+import serial
+import serial.tools.list_ports
+
+
+# ═══════════════════════════════════════════════════════════════
+# 红外板协议常量
+# ═══════════════════════════════════════════════════════════════
+FRAME_HEADER  = 0xA1   # 帧头
+CMD_SEND_IR   = 0xF1   # 发射红外信号
+CMD_SET_ADDR  = 0xF2   # 修改通信地址
+CMD_SET_BAUD  = 0xF3   # 修改波特率
+
+DEFAULT_BAUDRATE = 9600
+
+# ═══════════════════════════════════════════════════════════════
+# 遥控器按键码 (从接收中采集到的红外原始码, 3字节)
+# ═══════════════════════════════════════════════════════════════
+IR_CODES = {
+    # 方向键
+    "up":       bytes([0x3B, 0xC4, 0x0D]),
+    "left":     bytes([0x3B, 0xC4, 0x10]),
+    "down":     bytes([0x3B, 0xC4, 0x15]),
+    "right":    bytes([0x3B, 0xC4, 0x12]),
+    # 继续通过接收测试添加...
+    # "ok":       bytes([0x3B, 0xC4, 0x??]),
+    # "menu":     bytes([0x3B, 0xC4, 0x??]),
+    # "power":    bytes([0x3B, 0xC4, 0x??]),
+}
+
+
+# ═══════════════════════════════════════════════════════════════
+# 帧构建
+# ═══════════════════════════════════════════════════════════════
+
+def build_send_frame(ir_code: bytes) -> bytes:
+    """
+    构建红外发射帧: {A1, F1, <3字节红外码>}
+
+    参数:
+        ir_code: 3 字节红外原始码, 如 b'\x3B\xC4\x0D'
+    返回:
+        5 字节完整发送帧
+    """
+    if len(ir_code) != 3:
+        raise ValueError(f"红外码必须是 3 字节, 实际 {len(ir_code)} 字节")
+
+    return bytes([FRAME_HEADER, CMD_SEND_IR]) + ir_code
+
+
+def build_set_addr_frame(new_addr: int) -> bytes:
+    """构建修改地址帧: {A1, F2, <新地址>, 00, 00}"""
+    return bytes([FRAME_HEADER, CMD_SET_ADDR, new_addr & 0xFF, 0x00, 0x00])
+
+
+def build_set_baud_frame(baud_code: int) -> bytes:
+    """
+    构建修改波特率帧: {A1, F3, <速率编号>, 00, 00}
+
+    已知波特率编号 (根据文档):
+      01 = 4800bps
+      (其他待补充, 默认 9600 可能对应 00 或其他值)
+    """
+    return bytes([FRAME_HEADER, CMD_SET_BAUD, baud_code & 0xFF, 0x00, 0x00])
+
+
+# ═══════════════════════════════════════════════════════════════
+# 串口扫描
+# ═══════════════════════════════════════════════════════════════
+
+USB_TTL_KEYWORDS = [
+    "ch343", "ch340", "ch341", "ch342", "ch344",
+    "usb-enhanced-serial", "usb serial", "usb-serial",
+    "ft232", "ftdi", "cp210", "pl2303", "wch",
+]
+
+
+def find_port():
+    """自动查找 USB-to-TTL 串口"""
+    ports = serial.tools.list_ports.comports()
+    for port in ports:
+        combined = f"{port.description or ''} {port.hwid or ''}".lower()
+        if any(kw in combined for kw in USB_TTL_KEYWORDS):
+            print(f"→ 自动选择: {port.device} — {port.description}")
+            return port.device
+    all_ports = list(ports)
+    if all_ports:
+        print(f"→ 回退使用: {all_ports[0].device}")
+        return all_ports[0].device
+    return None
+
+
+# ═══════════════════════════════════════════════════════════════
+# 发送核心
+# ═══════════════════════════════════════════════════════════════
+
+def send_ir(ser: serial.Serial, ir_code: bytes, repeat: int = 1):
+    """
+    
+    
+    参数:
+        ser:     已打开的串口                                 
+        ir_code: 3字节红外原始码                              
+        repeat:  重复发送次数 
+    """
+    frame = build_send_frame(ir_code)
+    
+
+
+    for i in range(repeat):
+        ser.write(frame)
+        ser.flush()
+        hex_str = ir_code.hex(" ").upper()
+        if repeat > 1:
+            print(f"  发送 [{i+1}/{repeat}]: {hex_str}")
+        else:
+            print(f"  发送: {hex_str} → 帧 {frame.hex(' ').upper()}")
+
+        if i < repeat - 1:
+            time.sleep(0.1)
+    
+
+def send_raw_ir(port: str, hex_str: str, repeat: int = 1):
+    """发送原始 3 字节红外码 (hex 字符串)"""
+    hex_str = hex_str.replace(" ", "").replace("-", "")
+    if len(hex_str) != 6:
+        print(f"✗ 红外码应为 6 位 hex (3字节), 实际 {len(hex_str)} 位")
+        return
+
+    try:
+        ir_code = bytes.fromhex(hex_str)
+    except ValueError as e:
+        print(f"✗ HEX 格式错误: {e}")
+        return
+
+    ser = serial.Serial(port, baudrate=DEFAULT_BAUDRATE, timeout=0.5)
+    try:
+        send_ir(ser, ir_code, repeat)
+    finally:
+        ser.close()
+
+
+def send_named(port: str, name: str, repeat: int = 1):
+    """发送命名按键"""
+    name = name.lower()
+    ir_code = IR_CODES.get(name)
+    if ir_code is None:
+        print(f"✗ 未知按键: {name}")
+        print(f"  已知按键: {', '.join(IR_CODES.keys())}")
+        return
+
+    ser = serial.Serial(port, baudrate=DEFAULT_BAUDRATE, timeout=0.5)
+    try:
+        send_ir(ser, ir_code, repeat)
+    finally:
+        ser.close()
+
+
+# ═══════════════════════════════════════════════════════════════
+# 交互模式 (同时收发)
+# ═══════════════════════════════════════════════════════════════
+
+INTERACTIVE_HELP = """
+╔══════════════════════════════════════════════╗
+║    投影仪红外遥控 — 收发一体交互模式       ║
+╠══════════════════════════════════════════════╣
+║  w/↑=上  s/↓=下  a/←=左  d/→=右          ║
+║  Enter = 重复上次按键                       ║
+╠══════════════════════════════════════════════╣
+║  :raw <hex>    发送自定义红外码              ║
+║  :learn <名> <hex>  学习新按键              ║
+║  :keys         列出已存按键                  ║
+║  :h            帮助                         ║
+║  :q            退出                         ║
+╠══════════════════════════════════════════════╣
+║  接收到的红外信号会实时显示在屏幕上          ║
+╚══════════════════════════════════════════════╝
+"""
+
+KEY_MAP = {
+    'w': 'up', 's': 'down', 'a': 'left', 'd': 'right',
+    'up': 'up', 'down': 'down', 'left': 'left', 'right': 'right',
+}
+
+# 接收到的新信号 → 显示的标签
+RX_LABELS = {
+    0x0D: "↑ 上",
+    0x15: "↓ 下",
+    0x10: "← 左",
+    0x12: "→ 右",
+}
+
+
+def _kbhit():
+    """检查是否有按键 (非阻塞)"""
+    try:
+        import msvcrt
+        return msvcrt.kbhit()
+    except ImportError:
+        return False
+
+
+def _getch():
+    """读取单个按键 (阻塞, 仅在 kbhit() 返回 True 后调用)"""
+    try:
+        import msvcrt
+        ch = msvcrt.getch()
+        if ch == b'\xe0':
+            ch2 = msvcrt.getch()
+            return {
+                b'H': 'up', b'P': 'down', b'K': 'left', b'M': 'right',
+            }.get(ch2, '')
+        return ch.decode("utf-8", errors="replace").lower()
+    except ImportError:
+        return ""
+
+
+def run_interactive(port: str, repeat: int = 1):
+    """收发一体交互模式 — 同时接收红外信号 + 按键发送"""
+    import msvcrt
+
+    codes = dict(IR_CODES)
+    cfg = {"repeat": repeat}  # 可变容器, 允许命令中修改
+    ser = serial.Serial(port, baudrate=DEFAULT_BAUDRATE, timeout=0)
+    print(f"✓ 已连接 {port} @ {DEFAULT_BAUDRATE} baud")
+    print(INTERACTIVE_HELP)
+
+    last_key = None        # 上一个按键名 (用于 Enter 重复)
+    rx_buffer = bytearray()
+    rx_last_byte_time = 0
+
+    print("┌──────────────────────────────────────────┐")
+    print("│  等待按键或红外信号...                    │")
+    print("└──────────────────────────────────────────┘")
+
+    try:
+        while True:
+            got_input = False
+
+            # ── 1. 检查串口接收 ──
+            try:
+                n = ser.in_waiting
+            except (serial.SerialException, OSError):
+                print("\n✗ 串口断开")
+                break
+
+            if n > 0:
+                data = ser.read(n)
+                now = time.time()
+
+                # 判断是否为新信号 (距上次字节 > 200ms)
+                if rx_buffer and (now - rx_last_byte_time) > 0.2:
+                    # 打印上一个信号
+                    _print_rx(bytes(rx_buffer))
+                    rx_buffer.clear()
+
+                rx_buffer.extend(data)
+                rx_last_byte_time = now
+                got_input = True
+
+            # 缓冲区有数据但已空闲 → 打印
+            if rx_buffer and (time.time() - rx_last_byte_time) > 0.2:
+                _print_rx(bytes(rx_buffer))                   
+                rx_buffer.clear()                             
+                got_input = True
+
+            # ── 2. 检查键盘输入 (非阻塞) ──
+            if msvcrt.kbhit():
+                ch = _getch()
+                got_input = True 
+
+                # 方向键
+                name = KEY_MAP.get(ch)
+                if name and name in codes:
+                    send_ir(ser, codes[name], cfg["repeat"])
+                    last_key = name
+                    continue
+
+                # 回车 = 重复上次
+                if ch in ('\r', '\n'):
+                    if last_key and last_key in codes:
+                        send_ir(ser, codes[last_key], cfg["repeat"])
+                    continue
+
+                # 命令模式
+                if ch in (':', '/', '\\'):
+                    # 读取整行命令
+                    print(f"\nIR> :", end="", flush=True)
+                    cmd_line = _read_line()
+                    _handle_command(ser, codes, cmd_line, cfg, last_key)
+                    print("┌──────────────────────────────────────────┐")
+                    print("│  等待按键或红外信号...                    │")
+                    print("└──────────────────────────────────────────┘")
+                    continue
+
+                # 退出
+                if ch in ('q', '\x1b', 'esc'):
+                    print("\n退出")
+                    break
+
+                # 帮助
+                if ch in ('h', '?'):
+                    print("\n" + INTERACTIVE_HELP)
+                    continue
+
+            # ── 3. 空闲时短暂休眠 ──
+            if not got_input:                                 
+                time.sleep(0.02)
+
+    except KeyboardInterrupt:
+        print("\n\n用户中断")
+    finally:
+        ser.close()
+        print(f"✓ 已关闭 {port}")
+
+
+def _print_rx(data: bytes):
+    """格式化打印接收到的红外信号"""
+
+    ts = time.strftime("%H:%M:%S")
+    hex_str = data.hex(" ").upper()
+
+    # 尝试识别
+    label = ""
+    if len(data) == 3 and data[0] == 0x3B and data[1] == 0xC4:
+        label = RX_LABELS.get(data[2], f"键值 0x{data[2]:02X}")
+
+    if label:
+        print(f"\n  ← [{ts}] 收到: {hex_str}  {label}")
+    else:
+        print(f"\n  ← [{ts}] 收到: {hex_str}  ({len(data)}字节)")
+
+
+def _read_line() -> str:
+    """读取一行输入 (在 kbhit 之后调用)"""
+    import msvcrt
+    line = ""
+    while True:
+        ch = msvcrt.getch()
+        if ch in (b'\r', b'\n'):
+            print()
+            return line
+        if ch == b'\x08':  # Backspace
+            if line:
+                line = line[:-1]
+                print('\b \b', end='', flush=True)
+            continue
+        if ch == b'\x1b':  # ESC 取消
+            print(" [取消]")
+            return ""
+        try:
+            c = ch.decode("utf-8")
+            line += c
+            print(c, end='', flush=True)
+        except UnicodeDecodeError:
+            pass
+
+
+def _handle_command(ser, codes, line, cfg, last_key):
+    """处理命令行输入"""
+    if not line:
+        return
+
+    parts = line.strip().split()
+    if not parts:
+        return
+
+    cmd = parts[0].lower()
+
+    if cmd in ('q', 'quit', 'exit'):
+        raise KeyboardInterrupt()
+
+    if cmd in ('h', 'help', '?'):
+        print(INTERACTIVE_HELP)
+        return
+
+    if cmd == 'keys':
+        print("已存按键:")
+        for k, v in codes.items():
+            marker = " ← 上次" if k == last_key else ""
+            print(f"  {k:<12} → {v.hex(' ').upper()}{marker}")
+        return
+
+    if cmd == 'learn' and len(parts) >= 3:
+        try:
+            data = bytes.fromhex(parts[2].replace(" ", ""))
+            codes[parts[1]] = data
+            print(f"  ✓ {parts[1]} → {data.hex(' ').upper()}")
+        except ValueError:
+            print("  ✗ HEX 格式错误")
+        return
+
+    if cmd == 'raw' and len(parts) >= 2:
+        hex_str = parts[1].replace(" ", "")
+        if len(hex_str) != 6:
+            print(f"  ✗ 红外码应为 6 位 hex (3字节)")
+            return
+        try:
+            data = bytes.fromhex(hex_str)
+            send_ir(ser, data, cfg["repeat"])
+        except ValueError:
+            print("  ✗ HEX 格式错误")
+        return
+
+    if cmd == 'repeat' and len(parts) >= 2:
+        try:
+            cfg["repeat"] = int(parts[1])
+            print(f"  ✓ 重复次数 = {cfg['repeat']}")
+        except ValueError:
+            print("  用法: repeat <次数>")
+        return
+
+    # 命名按键
+    if cmd in codes:
+        send_ir(ser, codes[cmd], cfg["repeat"])
+    else:
+        print(f"  ✗ 未知命令: {cmd}")
+
+
+# ═══════════════════════════════════════════════════════════════
+# 命令行入口
+# ═══════════════════════════════════════════════════════════════
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="红外收发板 — 投影仪遥控 (A1 F1 协议)",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+示例:
+  %(prog)s -p COM8 up               发送"上"键
+  %(prog)s -p COM8 down             发送"下"键
+  %(prog)s -p COM8 --raw 3BC40D    发送原始红外码
+  %(prog)s -p COM8 -i               交互模式 (w/s/a/d 方向键控制)
+  %(prog)s -p COM8 -i -n 3          交互模式, 每键重复3次
+        """,
+    )
+    parser.add_argument("key", nargs="?", default=None,
+                        help="按键名 (up/down/left/right)")
+    parser.add_argument("-p", "--port", default=None, help="串口 (如 COM8)")
+    parser.add_argument("-b", "--baudrate", type=int, default=DEFAULT_BAUDRATE,
+                        help=f"波特率 (默认 {DEFAULT_BAUDRATE})")
+    parser.add_argument("--raw", metavar="HEX", help="发送原始 3 字节红外码")
+    parser.add_argument("-n", "--repeat", type=int, default=1,
+                        help="重复发送次数 (默认 1)")
+    parser.add_argument("-i", "--interactive", action="store_true",
+                        help="交互模式 (w/s/a/d 方向键控制)")
+    parser.add_argument("--list", action="store_true", help="列出所有已知按键")
+    parser.add_argument("--set-addr", metavar="HEX", help="修改通信地址 (如 A5)")
+    parser.add_argument("--set-baud", metavar="CODE", help="修改波特率编号")
+    args = parser.parse_args()
+
+    # 确定端口
+    port = args.port or find_port()
+    if not port:
+        print("✗ 未找到串口。请用 -p 指定。")
+        return
+
+    # 列出按键
+    if args.list:
+        print("已知红外码:")
+        for key, code in IR_CODES.items():
+            print(f"  {key:<12} → {code.hex(' ').upper()}")
+        return
+
+    # 配置命令
+    if args.set_addr:
+        addr = int(args.set_addr, 16)
+        frame = build_set_addr_frame(addr)
+        ser = serial.Serial(port, baudrate=DEFAULT_BAUDRATE, timeout=0.5)
+        ser.write(frame)
+        ser.close()
+        print(f"✓ 已发送修改地址: {frame.hex(' ').upper()}")
+        return
+
+    if args.set_baud:
+        code = int(args.set_baud)
+        frame = build_set_baud_frame(code)
+        ser = serial.Serial(port, baudrate=DEFAULT_BAUDRATE, timeout=0.5)
+        ser.write(frame)
+        ser.close()
+        print(f"✓ 已发送修改波特率: {frame.hex(' ').upper()}")
+        return
+
+    # 交互模式
+    if args.interactive:
+        run_interactive(port, args.repeat)
+        return
+
+    # 单次发送
+    if args.raw:
+        send_raw_ir(port, args.raw, args.repeat)
+    elif args.key:
+        send_named(port, args.key, args.repeat)
+    else:
+        parser.print_help()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/ir_try.py b/ir_try.py
new file mode 100644
index 0000000..acf5a64
--- /dev/null
+++ b/ir_try.py
@@ -0,0 +1,92 @@
+# -*- coding: utf-8 -*-
+"""
+快速尝试单个协议 — 带手机摄像头观察红外LED是否发光
+"""
+
+import sys
+import time
+import serial
+
+PORT = sys.argv[1] if len(sys.argv) > 1 else "COM8"
+KEY = 0x0D  # 上
+
+ser = serial.Serial(PORT, baudrate=9600, timeout=0.3)
+
+# ═══════════════════════════════════════════════════════
+# 尝试1: 完整4字节 NEC [addr, ~addr, cmd, ~cmd]
+# ═══════════════════════════════════════════════════════
+frame = bytes([0x3B, 0xC4, KEY, KEY ^ 0xFF])
+print(f"尝试: NEC完整4字节 → {frame.hex(' ').upper()}")
+print("用手机摄像头看红外LED是否发光...")
+ser.reset_input_buffer()
+ser.write(frame)
+ser.flush()
+time.sleep(0.15)
+# 读回应
+resp = ser.read(ser.in_waiting)
+if resp:
+    print(f"  板子回应: {resp.hex(' ').upper()}")
+else:
+    print("  (无回应)")
+
+time.sleep(0.5)
+
+# ═══════════════════════════════════════════════════════
+# 尝试2: NEC 地址命令格式 [addr, cmd] (有些板子只要2字节)
+# ═══════════════════════════════════════════════════════
+frame = bytes([0x3B, KEY])
+print(f"\n尝试: NEC短帧2字节 → {frame.hex(' ').upper()}")
+print("用手机摄像头看红外LED是否发光...")
+ser.reset_input_buffer()
+ser.write(frame)
+ser.flush()
+time.sleep(0.15)
+resp = ser.read(ser.in_waiting)
+if resp:
+    print(f"  板子回应: {resp.hex(' ').upper()}")
+else:
+    print("  (无回应)")
+
+time.sleep(0.5)
+
+# ═══════════════════════════════════════════════════════
+# 尝试3: 带命令前缀的发送 (常见 YS-IRTM 风格)
+# A1 F1 + 地址 + 命令
+# ═══════════════════════════════════════════════════════
+frame = bytes([0xA1, 0xF1, 0x3B, KEY])
+print(f"\n尝试: A1F1命令格式 → {frame.hex(' ').upper()}")
+print("用手机摄像头看红外LED是否发光...")
+ser.reset_input_buffer()
+ser.write(frame)
+ser.flush()
+time.sleep(0.15)
+resp = ser.read(ser.in_waiting)
+if resp:
+    print(f"  板子回应: {resp.hex(' ').upper()}")
+else:
+    print("  (无回应)")
+
+time.sleep(0.5)
+
+# ═══════════════════════════════════════════════════════
+# 尝试4: 换一种候选 — 单字节地址
+# ═══════════════════════════════════════════════════════
+frame = bytes([0xC4, KEY])
+print(f"\n尝试: 单地址2字节 → {frame.hex(' ').upper()}")
+ser.reset_input_buffer()
+ser.write(frame)
+ser.flush()
+time.sleep(0.15)
+resp = ser.read(ser.in_waiting)
+if resp:
+    print(f"  板子回应: {resp.hex(' ').upper()}")
+else:
+    print("  (无回应)")
+
+ser.close()
+
+print("\n──────")
+print("用手机摄像头观察:")
+print("  红外LED = 白色透明或深紫色的小珠子")
+print("  发送时如果发光 → 手机屏幕里能看到紫白色闪光")
+print("  完全不亮 → 发送协议不对，板子根本没发射")