From 7339ce31d962a66be62772beb67fe479fafdacda Mon Sep 17 00:00:00 2001
From: helei <helei@nky.com>
Date: Sat, 22 Aug 2026 11:55:05 +0800
Subject: [PATCH] =?UTF-8?q?V1.5:=20=E6=A0=B9=E6=B2=BB485=E6=8E=A5=E6=94=B6?=
 =?UTF-8?q?=E5=81=9C=E6=91=86(ORE=E5=90=8ERxState=E5=8D=A1BUSY=5FRX?=
 =?UTF-8?q?=E8=87=B4Receive=5FIT=E9=9D=99=E9=BB=98=E5=A4=B1=E8=B4=A5,?=
 =?UTF-8?q?=E5=BC=BA=E5=88=B6=E5=BD=92=E4=BD=8D=E5=86=8D=E9=87=8D=E6=8C=82?=
 =?UTF-8?q?;=E6=9F=A5=E8=AF=A2=E5=89=8D=E6=A3=80=E6=9F=A5=E5=85=9C?=
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---
 V1.5/STM32F103_App1/HardWare/UART/uart.c | 10 ++++++++++
 V1.5/鐗堟湰璇存槑.md                     |  3 +++
 2 files changed, 13 insertions(+)

diff --git a/V1.5/STM32F103_App1/HardWare/UART/uart.c b/V1.5/STM32F103_App1/HardWare/UART/uart.c
index 240b46d..66fffb6 100644
--- a/V1.5/STM32F103_App1/HardWare/UART/uart.c
+++ b/V1.5/STM32F103_App1/HardWare/UART/uart.c
@@ -190,6 +190,7 @@ void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
         __HAL_UART_CLEAR_NEFLAG(huart);
         __HAL_UART_CLEAR_IDLEFLAG(huart);
         huart->ErrorCode = HAL_UART_ERROR_NONE;
+        huart1.RxState = HAL_UART_STATE_READY;   /* 关键：HAL 错误处理后 RxState 常卡 BUSY_RX，Receive_IT 会静默失败，接收永久停摆 */
         HAL_UART_Receive_IT(&huart1, &uart1_rx_byte, 1);   /* 蓝牙/调试口被 ORE 弄挂后立即恢复接收 */
     }
     else if (huart->Instance == USART2) {
@@ -199,6 +200,7 @@ void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
         __HAL_UART_CLEAR_NEFLAG(huart);
         __HAL_UART_CLEAR_IDLEFLAG(huart);
         huart->ErrorCode = HAL_UART_ERROR_NONE;
+        huart2.RxState = HAL_UART_STATE_READY;   /* 关键：HAL 错误处理后 RxState 常卡 BUSY_RX，Receive_IT 会静默失败，接收永久停摆 */
         HAL_UART_Receive_IT(&huart2, &uart2_rx_byte, 1);   /* RS485 秤口同样自愈 */
     }
     else if (huart->Instance == UART5) {
@@ -208,6 +210,7 @@ void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
         __HAL_UART_CLEAR_NEFLAG(huart);
         __HAL_UART_CLEAR_IDLEFLAG(huart);
         huart->ErrorCode = HAL_UART_ERROR_NONE;
+        huart5.RxState = HAL_UART_STATE_READY;   /* 关键：HAL 错误处理后 RxState 常卡 BUSY_RX，Receive_IT 会静默失败，接收永久停摆 */
         HAL_UART_Receive_IT(&huart5, &uart5_rx_byte, 1);   /* HLW8032 口同样自愈 */
     }
     else if (huart->Instance == USART3) {
@@ -270,6 +273,13 @@ void USART2_FlushRxBuf(void)
 {
     uart2_rx_ready = 0;
     uart2_cmd_index = 0;
+    /* 兜底：接收中断意外停摆时（ORE 后状态卡 BUSY_RX）拉起来。不 Abort，不动正常状态 */
+    if (!(USART2->CR1 & USART_CR1_RXNEIE)) {
+        __HAL_UART_CLEAR_OREFLAG(&huart2);
+        huart2.ErrorCode = HAL_UART_ERROR_NONE;
+        huart2.RxState = HAL_UART_STATE_READY;
+        HAL_UART_Receive_IT(&huart2, &uart2_rx_byte, 1);
+    }
 }
 
 /* 从 USART2 接收缓冲区取出一帧（20ms 无新字节结束），返回帧长度，0 表示暂无完整帧 */
diff --git a/V1.5/鐗堟湰璇存槑.md b/V1.5/鐗堟湰璇存槑.md
index 5d18030..419ca18 100644
--- a/V1.5/鐗堟湰璇存槑.md
+++ b/V1.5/鐗堟湰璇存槑.md
@@ -190,3 +190,6 @@
 - 485 鏌ヨ鏃ュ織澧炲己锛氭煡璇㈠彂鍑� 1s 鏃犱换浣曞簲绛斿抚鎵� WARN锛堟棤搴旂瓟锛夛紝鏈夊簲绛斿垯鍘熸湁 hex/瑙ｆ瀽鏃ュ織瑕嗙洊
 - 鎾ゆ帀 485 鏌ヨ鍓嶇殑 ForceRxReset锛圓bortReceive 閲嶆寕浼氭妸鎺ユ敹鎼炴锛屽彧鏀跺埌搴旂瓟鏈�鍚庝竴涓瓧鑺傦級锛�
   鏀逛负鍙竻杞欢缂撳啿涓嶅姩纭欢锛屾帴鏀跺洖鍒版渶鍒濆父寮�鏂瑰紡锛涘抚澶存悳绱�/鍥炲０璇嗗埆/鏃犲簲绛旀棩蹇椾繚鐣�
+- 鏍规不 485 鎺ユ敹鍋滄憜锛欻AL 澶勭悊 ORE 閿欒鍚� RxState 甯稿崱 BUSY_RX锛岃嚜鎰堥噷鐨� Receive_IT 闈欓粯澶辫触
+  鈫� 閿欒鍥炶皟閲嶆寕鍓嶅己鍒� RxState=READY锛涙煡璇㈠墠娓呯紦鍐叉椂椤哄甫妫�鏌ユ帴鏀朵腑鏂槸鍚﹀仠鎽嗗苟鎷夎捣锛堜笉 Abort锛�
+  USART1/USART5 鑷剤鍚屾牱鍔犲浐