加入eeprom驱动，用于保存屏幕触控的校准数据

Core/Inc/stm32f1xx_hal_conf.h

@@ -45,7 +45,7 @@
 /*#define HAL_ETH_MODULE_ENABLED   */
 /*#define HAL_FLASH_MODULE_ENABLED   */
 #define HAL_GPIO_MODULE_ENABLED
-/*#define HAL_I2C_MODULE_ENABLED   */
+#define HAL_I2C_MODULE_ENABLED
 /*#define HAL_I2S_MODULE_ENABLED   */
 /*#define HAL_IRDA_MODULE_ENABLED   */
 /*#define HAL_IWDG_MODULE_ENABLED   */

Core/Src/main.c

@@ -40,6 +40,8 @@
 /* USER CODE END PM */
 
 /* Private variables ---------------------------------------------------------*/
+I2C_HandleTypeDef hi2c2;
+
 SRAM_HandleTypeDef hsram1;
 
 /* USER CODE BEGIN PV */
@@ -50,6 +52,7 @@ SRAM_HandleTypeDef hsram1;
 void SystemClock_Config(void);
 static void MX_GPIO_Init(void);
 static void MX_FSMC_Init(void);
+static void MX_I2C2_Init(void);
 /* USER CODE BEGIN PFP */
 
 /* USER CODE END PFP */
@@ -88,6 +91,7 @@ int main(void)
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
   MX_FSMC_Init();
+  MX_I2C2_Init();
   /* USER CODE BEGIN 2 */
   main_app();
   /* USER CODE END 2 */
@@ -141,6 +145,40 @@ void SystemClock_Config(void)
   }
 }
 
+/**
+  * @brief I2C2 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_I2C2_Init(void)
+{
+
+  /* USER CODE BEGIN I2C2_Init 0 */
+
+  /* USER CODE END I2C2_Init 0 */
+
+  /* USER CODE BEGIN I2C2_Init 1 */
+
+  /* USER CODE END I2C2_Init 1 */
+  hi2c2.Instance = I2C2;
+  hi2c2.Init.ClockSpeed = 100000;
+  hi2c2.Init.DutyCycle = I2C_DUTYCYCLE_2;
+  hi2c2.Init.OwnAddress1 = 0;
+  hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+  hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+  hi2c2.Init.OwnAddress2 = 0;
+  hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+  hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+  if (HAL_I2C_Init(&hi2c2) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN I2C2_Init 2 */
+
+  /* USER CODE END I2C2_Init 2 */
+
+}
+
 /**
   * @brief GPIO Initialization Function
   * @param None

Core/Src/stm32f1xx_hal_msp.c

@@ -81,6 +81,71 @@ void HAL_MspInit(void)
   /* USER CODE END MspInit 1 */
 }
 
+/**
+* @brief I2C MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hi2c: I2C handle pointer
+* @retval None
+*/
+void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(hi2c->Instance==I2C2)
+  {
+  /* USER CODE BEGIN I2C2_MspInit 0 */
+
+  /* USER CODE END I2C2_MspInit 0 */
+
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    /**I2C2 GPIO Configuration
+    PB10     ------> I2C2_SCL
+    PB11     ------> I2C2_SDA
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+    /* Peripheral clock enable */
+    __HAL_RCC_I2C2_CLK_ENABLE();
+  /* USER CODE BEGIN I2C2_MspInit 1 */
+
+  /* USER CODE END I2C2_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief I2C MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hi2c: I2C handle pointer
+* @retval None
+*/
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef* hi2c)
+{
+  if(hi2c->Instance==I2C2)
+  {
+  /* USER CODE BEGIN I2C2_MspDeInit 0 */
+
+  /* USER CODE END I2C2_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_I2C2_CLK_DISABLE();
+
+    /**I2C2 GPIO Configuration
+    PB10     ------> I2C2_SCL
+    PB11     ------> I2C2_SDA
+    */
+    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10);
+
+    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_11);
+
+  /* USER CODE BEGIN I2C2_MspDeInit 1 */
+
+  /* USER CODE END I2C2_MspDeInit 1 */
+  }
+
+}
+
 static uint32_t FSMC_Initialized = 0;
 
 static void HAL_FSMC_MspInit(void){