1

main.py

@@ -6,6 +6,9 @@ import network
 import st7789py as st7789
 from config import CURRENT_CONFIG
 from audio import AudioPlayer, Microphone
+
+# Define colors that might be missing in st7789py
+DARKGREY = 0x4208
 from display import Display
 from websocket_client import WebSocketClient
 import uselect
@@ -89,7 +92,7 @@ def draw_mic_icon(display, x, y, active=True):
     if not display or not display.tft:
         return
     
-    color = st7789.GREEN if active else st7789.DARKGREY
+    color = st7789.GREEN if active else DARKGREY
     
     display.tft.fill_rect(x + 5, y, 10, 5, color)
     display.tft.fill_rect(x + 3, y + 5, 14, 10, color)
@@ -137,7 +140,7 @@ def draw_progress_bar(display, x, y, width, height, progress, color=st7789.CYAN)
     if not display or not display.tft:
         return
     
-    display.tft.fill_rect(x, y, width, height, st7789.DARKGREY)
+    display.tft.fill_rect(x, y, width, height, DARKGREY)
     if progress > 0:
         bar_width = int(width * min(progress, 1.0))
         display.tft.fill_rect(x, y, bar_width, height, color)
@@ -176,7 +179,7 @@ def render_confirm_screen(display, asr_text=""):
     display.tft.fill_rect(0, 0, 240, 30, st7789.CYAN)
     display.text("说完了吗？", 75, 8, st7789.BLACK)
     
-    display.tft.fill_rect(10, 50, 220, 80, st7789.DARKGREY)
+    display.tft.fill_rect(10, 50, 220, 80, DARKGREY)
     display.text(asr_text if asr_text else "未识别到文字", 20, 75, st7789.WHITE)
     
     display.tft.fill_rect(20, 150, 80, 30, st7789.GREEN)

websocket_client.py

@@ -147,10 +147,13 @@ class WebSocketClient:
 
             # Read payload
             data = bytearray(length)
-            view = memoryview(data)
+            
+            # Use smaller chunks for readinto to avoid memory allocation issues in MicroPython
             pos = 0
             while pos < length:
-                read_len = self.sock.readinto(view[pos:])
+                chunk_size = min(length - pos, 512)
+                chunk_view = memoryview(data)[pos:pos + chunk_size]
+                read_len = self.sock.readinto(chunk_view)
                 if read_len == 0: 
                     return None
                 pos += read_len

websocket_server/server.py

@@ -43,6 +43,49 @@ def calculate_md5(filepath):
             hash_md5.update(chunk)
     return hash_md5.hexdigest()
 
+
+def get_font_data(unicode_val):
+    """从字体文件获取单个字符数据（带缓存）"""
+    if unicode_val in font_cache:
+        return font_cache[unicode_val]
+    
+    try:
+        char = chr(unicode_val)
+        gb_bytes = char.encode('gb2312')
+        if len(gb_bytes) == 2:
+            code = struct.unpack('>H', gb_bytes)[0]
+            area = (code >> 8) - 0xA0
+            index = (code & 0xFF) - 0xA0
+            
+            if area >= 1 and index >= 1:
+                offset = ((area - 1) * 94 + (index - 1)) * 32
+                
+                if font_data_buffer:
+                    if offset + 32 <= len(font_data_buffer):
+                        font_data = font_data_buffer[offset:offset+32]
+                        font_cache[unicode_val] = font_data
+                        return font_data
+                else:
+                    # Fallback to file reading if buffer failed
+                    script_dir = os.path.dirname(os.path.abspath(__file__))
+                    font_path = os.path.join(script_dir, FONT_FILE)
+                    if not os.path.exists(font_path):
+                        font_path = os.path.join(script_dir, "..", FONT_FILE)
+                    if not os.path.exists(font_path):
+                        font_path = FONT_FILE
+                    
+                    if os.path.exists(font_path):
+                        with open(font_path, "rb") as f:
+                            f.seek(offset)
+                            font_data = f.read(32)
+                            if len(font_data) == 32:
+                                font_cache[unicode_val] = font_data
+                                return font_data
+    except:
+        pass
+    return None
+
+
 def init_font_cache():
     """初始化字体缓存和MD5"""
     global font_cache, font_md5, font_data_buffer
@@ -93,7 +136,7 @@ def get_output_path():
     timestamp = time.strftime("%Y%m%d_%H%M%S")
     return os.path.join(OUTPUT_DIR, f"image_{timestamp}_{image_counter}.png")
 
-THUMB_SIZE = 245
+THUMB_SIZE = 240
 
 # 字体请求队列（用于重试机制）
 font_request_queue = {}
@@ -131,26 +174,49 @@ async def start_async_image_generation(websocket: WebSocket, asr_text: str):
     
     await websocket.send_text(f"TASK_ID:{task_id}")
     
-    def progress_callback(progress: int, message: str):
-        """进度回调函数"""
+    # 获取当前事件循环
+    try:
+        loop = asyncio.get_running_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+    
+    # 使用队列在线程和主事件循环之间传递消息
+    message_queue = asyncio.Queue()
+    
+    async def progress_callback_async(progress: int, message: str):
+        """异步进度回调"""
         task.progress = progress
         task.message = message
         try:
-            asyncio.run_coroutine_threadsafe(
-                websocket.send_text(f"TASK_PROGRESS:{task_id}:{progress}:{message}"),
-                asyncio.get_event_loop()
-            )
+            await websocket.send_text(f"TASK_PROGRESS:{task_id}:{progress}:{message}")
         except Exception as e:
             print(f"Error sending progress: {e}")
     
+    def progress_callback(progress: int, message: str):
+        """进度回调函数（在线程中调用）"""
+        task.progress = progress
+        task.message = message
+        # 通过队列在主循环中发送消息
+        asyncio.run_coroutine_threadsafe(
+            progress_callback_async(progress, message),
+            loop
+        )
+    
     try:
         task.status = "optimizing"
         
         await websocket.send_text("STATUS:OPTIMIZING:正在优化提示词...")
         await asyncio.sleep(0.2)
         
+        # 同步调用优化函数
         optimized_prompt = await asyncio.to_thread(optimize_prompt, asr_text, progress_callback)
         
+        # 确保返回有效的提示词
+        if not optimized_prompt:
+            optimized_prompt = asr_text
+            print(f"Warning: optimize_prompt returned None, using original text: {asr_text}")
+        
         await websocket.send_text(f"PROMPT:{optimized_prompt}")
         task.optimized_prompt = optimized_prompt
         
@@ -158,6 +224,7 @@ async def start_async_image_generation(websocket: WebSocket, asr_text: str):
         await websocket.send_text("STATUS:RENDERING:正在生成图片，请稍候...")
         await asyncio.sleep(0.2)
         
+        # 同步调用图片生成函数
         image_path = await asyncio.to_thread(generate_image, optimized_prompt, progress_callback)
         
         task.result = image_path
@@ -178,8 +245,11 @@ async def start_async_image_generation(websocket: WebSocket, asr_text: str):
         task.status = "failed"
         task.error = str(e)
         print(f"Image generation task error: {e}")
-        await websocket.send_text(f"IMAGE_ERROR:图片生成出错: {str(e)}")
-        await websocket.send_text("STATUS:ERROR:图片生成出错")
+        try:
+            await websocket.send_text(f"IMAGE_ERROR:图片生成出错: {str(e)}")
+            await websocket.send_text("STATUS:ERROR:图片生成出错")
+        except Exception as ws_e:
+            print(f"Error sending error message: {ws_e}")
     finally:
         if task_id in active_tasks:
             del active_tasks[task_id]
@@ -198,7 +268,7 @@ async def send_image_to_client(websocket: WebSocket, image_path: str):
     await websocket.send_text(f"IMAGE_START:{len(image_data)}:{THUMB_SIZE}")
     
     # Send binary data directly
-    chunk_size = 4096  # Increased chunk size for binary
+    chunk_size = 512  # Decreased chunk size for ESP32 memory stability
     for i in range(0, len(image_data), chunk_size):
         chunk = image_data[i:i+chunk_size]
         await websocket.send_bytes(chunk)
@@ -208,49 +278,7 @@ async def send_image_to_client(websocket: WebSocket, image_path: str):
     print("Image sent to ESP32 (Binary)")
 
 
-def get_font_data(unicode_val):
-    """从字体文件获取单个字符数据（带缓存）"""
-    if unicode_val in font_cache:
-        return font_cache[unicode_val]
-    
-    try:
-        char = chr(unicode_val)
-        gb_bytes = char.encode('gb2312')
-        if len(gb_bytes) == 2:
-            code = struct.unpack('>H', gb_bytes)[0]
-            area = (code >> 8) - 0xA0
-            index = (code & 0xFF) - 0xA0
-            
-            if area >= 1 and index >= 1:
-                offset = ((area - 1) * 94 + (index - 1)) * 32
-                
-                if font_data_buffer:
-                    if offset + 32 <= len(font_data_buffer):
-                        font_data = font_data_buffer[offset:offset+32]
-                        font_cache[unicode_val] = font_data
-                        return font_data
-                else:
-                    # Fallback to file reading if buffer failed
-                    script_dir = os.path.dirname(os.path.abspath(__file__))
-                    font_path = os.path.join(script_dir, FONT_FILE)
-                    if not os.path.exists(font_path):
-                        font_path = os.path.join(script_dir, "..", FONT_FILE)
-                    if not os.path.exists(font_path):
-                        font_path = FONT_FILE
-                    
-                    if os.path.exists(font_path):
-                        with open(font_path, "rb") as f:
-                            f.seek(offset)
-                            font_data = f.read(32)
-                            if len(font_data) == 32:
-                                font_cache[unicode_val] = font_data
-                                return font_data
-    except:
-        pass
-    return None
-
-
-def send_font_batch_with_retry(websocket, code_list, retry_count=0):
+async def send_font_batch_with_retry(websocket, code_list, retry_count=0):
     """批量发送字体数据（带重试机制）"""
     global font_request_queue
     
@@ -269,10 +297,7 @@ def send_font_batch_with_retry(websocket, code_list, retry_count=0):
                 import binascii
                 hex_data = binascii.hexlify(font_data).decode('utf-8')
                 response = f"FONT_DATA:{code_str}:{hex_data}"
-                asyncio.run_coroutine_threadsafe(
-                    websocket.send_text(response),
-                    asyncio.get_event_loop()
-                )
+                await websocket.send_text(response)
                 success_codes.add(unicode_val)
             else:
                 failed_codes.append(code_str)
@@ -336,7 +361,7 @@ async def handle_font_request(websocket, message_type, data):
             code_list = codes_str.split(",")
             print(f"Batch Font Request for {len(code_list)} chars")
             
-            success_count, failed = send_font_batch_with_retry(websocket, code_list)
+            success_count, failed = await send_font_batch_with_retry(websocket, code_list)
             print(f"Font batch: {success_count} success, {len(failed)} failed")
             
             # 发送完成标记
@@ -345,7 +370,7 @@ async def handle_font_request(websocket, message_type, data):
             # 如果有失败的，进行重试
             if failed:
                 await asyncio.sleep(0.5)
-                send_font_batch_with_retry(websocket, failed, retry_count=1)
+                await send_font_batch_with_retry(websocket, failed, retry_count=1)
                 
         except Exception as e:
             print(f"Error handling batch font request: {e}")
@@ -402,24 +427,35 @@ class MyRecognitionCallback(RecognitionCallback):
         self.websocket = websocket
         self.loop = loop
         self.final_text = ""  # 保存最终识别结果
+        self.sentence_list = []  # 累积所有句子
 
     def on_open(self) -> None:
         print("ASR Session started")
+        self.sentence_list = []
+        self.final_text = ""
 
     def on_close(self) -> None:
         print("ASR Session closed")
+        # 关闭时将所有句子合并为完整文本
+        if self.sentence_list:
+            self.final_text = "".join(self.sentence_list)
+            print(f"Final combined ASR text: {self.final_text}")
 
     def on_event(self, result: RecognitionResult) -> None:
         if result.get_sentence():
              text = result.get_sentence()['text']
              print(f"ASR Result: {text}")
-             self.final_text = text  # 保存识别结果
+             # 累积每一句识别结果
+             self.sentence_list.append(text)
+             # 同时更新 final_text 以便 Stop 时获取
+             self.final_text = "".join(self.sentence_list)
              # 将识别结果发送回客户端
              try:
-                 asyncio.run_coroutine_threadsafe(
-                     self.websocket.send_text(f"ASR:{text}"), 
-                     self.loop
-                 )
+                 if self.loop.is_running():
+                     asyncio.run_coroutine_threadsafe(
+                         self.websocket.send_text(f"ASR:{text}"), 
+                         self.loop
+                     )
              except Exception as e:
                  print(f"Failed to send ASR result to client: {e}")
 
@@ -470,13 +506,31 @@ def optimize_prompt(asr_text, progress_callback=None):
         )
         
         if response.status_code == 200:
-            optimized = response.output.choices[0].message.content.strip()
-            print(f"Optimized prompt: {optimized}")
+            if hasattr(response, 'output') and response.output and \
+               hasattr(response.output, 'choices') and response.output.choices and \
+               len(response.output.choices) > 0:
                 
-            if progress_callback:
-                progress_callback(30, f"提示词优化完成: {optimized[:50]}...")
+                optimized = response.output.choices[0].message.content.strip()
+                print(f"Optimized prompt: {optimized}")
                 
-            return optimized
+                if progress_callback:
+                    progress_callback(30, f"提示词优化完成: {optimized[:50]}...")
+                
+                return optimized
+            elif hasattr(response, 'output') and response.output and hasattr(response.output, 'text'):
+                # Handle case where API returns text directly instead of choices
+                optimized = response.output.text.strip()
+                print(f"Optimized prompt (direct text): {optimized}")
+                
+                if progress_callback:
+                    progress_callback(30, f"提示词优化完成: {optimized[:50]}...")
+                
+                return optimized
+            else:
+                print(f"Prompt optimization response format error: {response}")
+                if progress_callback:
+                    progress_callback(0, "提示词优化响应格式错误")
+                return asr_text
         else:
             print(f"Prompt optimization failed: {response.code} - {response.message}")
             if progress_callback:
@@ -748,7 +802,8 @@ async def websocket_endpoint(websocket: WebSocket):
                         # 先发送 ASR 文字到 ESP32 显示
                         await websocket.send_text(f"ASR:{asr_text}")
                         
-                        await start_async_image_generation(websocket, asr_text)
+                        # 使用 create_task 异步执行，避免阻塞主循环处理字体请求
+                        asyncio.create_task(start_async_image_generation(websocket, asr_text))
                     else:
                         print("No ASR text, skipping image generation")
 
@@ -778,53 +833,6 @@ async def websocket_endpoint(websocket: WebSocket):
                         print(f"Font request error: {e}")
                         await websocket.send_text("FONT_BATCH_END:0:0")
             
-                        # 计算偏移量
-                        # GB2312 编码范围：0xA1A1 - 0xFEFE
-                        # 区码：高字节 - 0xA0
-                        # 位码：低字节 - 0xA0
-                        area = (code >> 8) - 0xA0
-                        index = (code & 0xFF) - 0xA0
-                        
-                        if area >= 1 and index >= 1:
-                            offset = ((area - 1) * 94 + (index - 1)) * 32
-                            
-                            # 读取字体文件
-                            # 注意：这里为了简单，每次都打开文件。如果并发高，应该缓存文件句柄或内容。
-                            # 假设字体文件在当前目录或上级目录
-                            # Prioritize finding the file in the script's directory
-                            script_dir = os.path.dirname(os.path.abspath(__file__))
-                            font_path = os.path.join(script_dir, FONT_FILE)
-                            
-                            # Fallback: check one level up
-                            if not os.path.exists(font_path):
-                                font_path = os.path.join(script_dir, "..", FONT_FILE)
-                                
-                            # Fallback: check current working directory
-                            if not os.path.exists(font_path):
-                                font_path = FONT_FILE
-                            
-                            if os.path.exists(font_path):
-                                print(f"Reading font from: {font_path} (Offset: {offset})")
-                                with open(font_path, "rb") as f:
-                                    f.seek(offset)
-                                    font_data = f.read(32)
-                                    
-                                    if len(font_data) == 32:
-                                        import binascii
-                                        hex_data = binascii.hexlify(font_data).decode('utf-8')
-                                        # Return the original requested code (unicode or hex) so client can map it back
-                                        response = f"FONT_DATA:{target_code_str}:{hex_data}"
-                                        # print(f"Sending Font Response: {response[:30]}...")
-                                        await websocket.send_text(response)
-                                    else:
-                                        print(f"Error: Read {len(font_data)} bytes for font data (expected 32)")
-                            else:
-                                print(f"Font file not found: {font_path}")
-                        else:
-                             print(f"Invalid GB2312 code derived: {code:X} (Area: {area}, Index: {index})")
-                    except Exception as e:
-                        print(f"Error handling FONT request: {e}")
-            
             elif "bytes" in message:
                 # 接收音频数据并追加到缓冲区
                 data = message["bytes"]