System configuration

Disable serial, enable I2C2, set clock source to HSI48.

halconf.h

  * @brief   Enables the I2C subsystem.
  */
 #if !defined(HAL_USE_I2C) || defined(__DOXYGEN__)
-#define HAL_USE_I2C                 FALSE
+#define HAL_USE_I2C                 TRUE
 #endif
 
 /**
  * @brief   Enables the SERIAL subsystem.
  */
 #if !defined(HAL_USE_SERIAL) || defined(__DOXYGEN__)
-#define HAL_USE_SERIAL              TRUE
+#define HAL_USE_SERIAL              FALSE
 #endif
 
 /**

mcuconf.h

 #define STM32_PLS                           STM32_PLS_LEV0
 #define STM32_HSI_ENABLED                   TRUE
 #define STM32_HSI14_ENABLED                 TRUE
-#define STM32_HSI48_ENABLED                 FALSE
+#define STM32_HSI48_ENABLED                 TRUE
 #define STM32_LSI_ENABLED                   TRUE
 #define STM32_HSE_ENABLED                   FALSE
 #define STM32_LSE_ENABLED                   FALSE
-#define STM32_SW                            STM32_SW_PLL
+#define STM32_SW                            STM32_SW_HSI48
 #define STM32_PLLSRC                        STM32_PLLSRC_HSI_DIV2
 #define STM32_PREDIV_VALUE                  1
 #define STM32_PLLMUL_VALUE                  12
  * I2C driver system settings.
  */
 #define STM32_I2C_USE_I2C1                  FALSE
-#define STM32_I2C_USE_I2C2                  FALSE
+#define STM32_I2C_USE_I2C2                  TRUE
 #define STM32_I2C_BUSY_TIMEOUT              50
 #define STM32_I2C_I2C1_IRQ_PRIORITY         3
 #define STM32_I2C_I2C2_IRQ_PRIORITY         3