用定时器获取数据效率很高

Core/Src/main.c

@@ -42,6 +42,8 @@
 /* Private variables ---------------------------------------------------------*/
 I2C_HandleTypeDef hi2c2;
 
+TIM_HandleTypeDef htim6;
+
 SRAM_HandleTypeDef hsram1;
 
 /* USER CODE BEGIN PV */
@@ -53,6 +55,7 @@ void SystemClock_Config(void);
 static void MX_GPIO_Init(void);
 static void MX_FSMC_Init(void);
 static void MX_I2C2_Init(void);
+static void MX_TIM6_Init(void);
 /* USER CODE BEGIN PFP */
 
 /* USER CODE END PFP */
@@ -92,6 +95,7 @@ int main(void)
   MX_GPIO_Init();
   MX_FSMC_Init();
   MX_I2C2_Init();
+  MX_TIM6_Init();
   /* USER CODE BEGIN 2 */
   main_app();
   /* USER CODE END 2 */
@@ -179,6 +183,44 @@ static void MX_I2C2_Init(void)
 
 }
 
+/**
+  * @brief TIM6 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_TIM6_Init(void)
+{
+
+  /* USER CODE BEGIN TIM6_Init 0 */
+
+  /* USER CODE END TIM6_Init 0 */
+
+  TIM_MasterConfigTypeDef sMasterConfig = {0};
+
+  /* USER CODE BEGIN TIM6_Init 1 */
+
+  /* USER CODE END TIM6_Init 1 */
+  htim6.Instance = TIM6;
+  htim6.Init.Prescaler = 72-1;
+  htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
+  htim6.Init.Period = 10000-1;
+  htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+  if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
+  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
+  if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN TIM6_Init 2 */
+
+  /* USER CODE END TIM6_Init 2 */
+
+}
+
 /**
   * @brief GPIO Initialization Function
   * @param None