改用串口中断的方式获取串口数据

.gitignore

@@ -0,0 +1 @@
+.idea

.idea/.gitignore

@@ -1,8 +0,0 @@
-# 默认忽略的文件
-/shelf/
-/workspace.xml
-# 基于编辑器的 HTTP 客户端请求
-/httpRequests/
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml

.idea/debugServers/ST_LINK.xml

@@ -1,13 +0,0 @@
-<component name="DebugServers">
-  <stlink-debug-target name="ST-LINK" uniqueID="b9876587-065a-46e0-ac20-d8d8269162fc" selected="true">
-    <debugger version="1">
-      <debugger kind="GDB" isBundled="true" />
-      <env />
-    </debugger>
-    <gdbserver exe="C:\ST\STM32CubeCLT_1.19.0\STLink-gdb-server\bin\ST-LINK_gdbserver.exe" programmer="C:\ST\STM32CubeCLT_1.19.0\STM32CubeProgrammer\bin" />
-    <st-link />
-    <device interface="SWD" />
-    <connection port="61234" warmup-ms="500" />
-    <swo enabled="false" port="61235" />
-  </stlink-debug-target>
-</component>

.idea/editor.xml

@@ -1,252 +0,0 @@
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-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppWrongSlashesInIncludeDirective/@EntryIndexedValue" value="HINT" type="string" />
-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppZeroConstantCanBeReplacedWithNullptr/@EntryIndexedValue" value="SUGGESTION" type="string" />
-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppZeroValuedExpressionUsedAsNullPointer/@EntryIndexedValue" value="WARNING" type="string" />
-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=IdentifierTypo/@EntryIndexedValue" value="DO_NOT_SHOW" type="string" />
-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=IfStdIsConstantEvaluatedCanBeReplaced/@EntryIndexedValue" value="SUGGESTION" type="string" />
-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=StdIsConstantEvaluatedWillAlwaysEvaluateToConstant/@EntryIndexedValue" value="WARNING" type="string" />
-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=StringLiteralTypo/@EntryIndexedValue" value="DO_NOT_SHOW" type="string" />
-  </component>
-</project>

.idea/lora_bl.iml

@@ -1,2 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module classpath="CMake" type="CPP_MODULE" version="4" />

.idea/misc.xml

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CMakePythonSetting">
-    <option name="pythonIntegrationState" value="YES" />
-  </component>
-  <component name="CMakeWorkspace" PROJECT_DIR="$PROJECT_DIR$" />
-</project>

.idea/modules.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/lora_bl.iml" filepath="$PROJECT_DIR$/.idea/lora_bl.iml" />
-    </modules>
-  </component>
-</project>

.idea/vcs.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>

Core/Inc/stm32f1xx_it.h

@@ -53,6 +53,7 @@ void BusFault_Handler(void);
 void UsageFault_Handler(void);
 void DebugMon_Handler(void);
 void TIM3_IRQHandler(void);
+void USART2_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
 /* USER CODE END EFP */

Core/Src/main.c

@@ -370,11 +370,28 @@ static void MX_GPIO_Init(void)
   * @retval None
   */
 /* USER CODE END Header_StartDefaultTask */
+// 全局变量用于存储接收的数据和状态
+uint8_t rx_buffer;
+uint8_t rx_complete_flag = 0;
+
+// 串口中断回调函数
+void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
+{
+  if (huart == &huart2)
+  {
+    // 接收完成，设置标志位
+    rx_complete_flag = 1;
+
+    // 重新开启中断接收，准备接收下一个字节
+    HAL_UART_Receive_IT(&huart2, &rx_buffer, 1);
+  }
+}
+
 void StartDefaultTask(void *argument)
 {
   /* USER CODE BEGIN 5 */
-  uint8_t rx_data;          // 用于存储接收的数据
-  HAL_StatusTypeDef rx_status;  // 用于存储接收操作的状态
+  // 初始化时开启中断接收
+  HAL_UART_Receive_IT(&huart2, &rx_buffer, 1);
 
   /* Infinite loop */
   for(;;)
@@ -386,26 +403,14 @@ void StartDefaultTask(void *argument)
     uint8_t c = 0x0a;
     HAL_UART_Transmit(&huart2, &c, 1, HAL_MAX_DELAY);
 
-    // 从UART2接收一个字节，超时时间设置为100ms
-    rx_status = HAL_UART_Receive(&huart2, &rx_data, 1, 100);
-
-    // 检查接收状态并处理
-    if (rx_status == HAL_OK)
-    {
-      // 接收成功，可以在这里处理接收到的数据
-      // 例如: 回显接收到的数据
-      // HAL_UART_Transmit(&huart2, &rx_data, 1, HAL_MAX_DELAY);
-      printf("rx_status = %02x\r\n",rx_data);
-    }
-    else if (rx_status == HAL_TIMEOUT)
+    // 检查是否有数据接收完成
+    if (rx_complete_flag)
     {
-      // 接收超时，可以根据需要处理
-      printf("UART receive timeout\r\n");
-    }
-    else
-    {
-      // 其他错误情况
-      printf("UART receive error\r\n");
+      // 清除标志位
+      rx_complete_flag = 0;
+
+      // 处理接收到的数据
+      printf("Received data: %02x\r\n", rx_buffer);
     }
 
     // 延时1秒

Core/Src/stm32f1xx_hal_msp.c

@@ -142,6 +142,9 @@ void HAL_UART_MspInit(UART_HandleTypeDef* huart)
     GPIO_InitStruct.Pull = GPIO_NOPULL;
     HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
+    /* USART2 interrupt Init */
+    HAL_NVIC_SetPriority(USART2_IRQn, 5, 0);
+    HAL_NVIC_EnableIRQ(USART2_IRQn);
     /* USER CODE BEGIN USART2_MspInit 1 */
 
     /* USER CODE END USART2_MspInit 1 */
@@ -216,6 +219,8 @@ void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
     */
     HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);
 
+    /* USART2 interrupt DeInit */
+    HAL_NVIC_DisableIRQ(USART2_IRQn);
     /* USER CODE BEGIN USART2_MspDeInit 1 */
 
     /* USER CODE END USART2_MspDeInit 1 */

Core/Src/stm32f1xx_it.c

@@ -55,6 +55,7 @@
 /* USER CODE END 0 */
 
 /* External variables --------------------------------------------------------*/
+extern UART_HandleTypeDef huart2;
 extern TIM_HandleTypeDef htim3;
 
 /* USER CODE BEGIN EV */
@@ -173,6 +174,20 @@ void TIM3_IRQHandler(void)
   /* USER CODE END TIM3_IRQn 1 */
 }
 
+/**
+  * @brief This function handles USART2 global interrupt.
+  */
+void USART2_IRQHandler(void)
+{
+  /* USER CODE BEGIN USART2_IRQn 0 */
+
+  /* USER CODE END USART2_IRQn 0 */
+  HAL_UART_IRQHandler(&huart2);
+  /* USER CODE BEGIN USART2_IRQn 1 */
+
+  /* USER CODE END USART2_IRQn 1 */
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */

lora_bl.ioc

@@ -54,6 +54,7 @@ NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:false\:true\:false\:true\:false
 NVIC.TIM3_IRQn=true\:15\:0\:false\:false\:true\:false\:false\:true\:true
 NVIC.TimeBase=TIM3_IRQn
 NVIC.TimeBaseIP=TIM3
+NVIC.USART2_IRQn=true\:5\:0\:false\:false\:true\:true\:true\:true\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false\:false
 PA10.Mode=Asynchronous
 PA10.Signal=USART1_RX
@@ -107,7 +108,7 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART1_UART_Init-USART1-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART1_UART_Init-USART1-false-HAL-true,4-MX_USART2_UART_Init-USART2-false-HAL-true,5-MX_USART3_UART_Init-USART3-false-HAL-true
 RCC.ADCFreqValue=18000000
 RCC.AHBCLKDivider=RCC_SYSCLK_DIV2
 RCC.AHBFreq_Value=36000000