[I2C] Able to build without HAL module

As Wire is a built-in library no need to modify it.

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

cores/arduino/stm32/stm32yyxx_hal_conf.h

@@ -21,7 +21,13 @@
  * Defined by default
  */
 #define HAL_ADC_MODULE_ENABLED
+
+#if !defined(HAL_I2C_MODULE_DISABLED)
 #define HAL_I2C_MODULE_ENABLED
+#else
+#undef HAL_I2C_MODULE_ENABLED
+#endif
+
 #define HAL_RTC_MODULE_ENABLED
 #define HAL_SPI_MODULE_ENABLED
 

cores/arduino/stm32/twi.c

@@ -42,6 +42,7 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+#if defined(HAL_I2C_MODULE_ENABLED)
 
 /* Private Defines */
 /// @brief I2C timout in tick unit
@@ -694,6 +695,7 @@ void I2C4_ER_IRQHandler(void)
 }
 #endif // !defined(STM32F0xx) && !defined(STM32L0xx)
 #endif // I2C4_BASE
+#endif /* HAL_I2C_MODULE_ENABLED */
 
 #ifdef __cplusplus
 }

cores/arduino/stm32/twi.h

@@ -47,6 +47,7 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+#if defined(HAL_I2C_MODULE_ENABLED)
 
 /* Exported types ------------------------------------------------------------*/
 /* offsetof is a gcc built-in function, this is the manual implementation */
@@ -163,6 +164,7 @@ i2c_status_e i2c_IsDeviceReady(i2c_t *obj, uint8_t devAddr, uint32_t trials);
 
 void i2c_attachSlaveRxEvent(i2c_t *obj, void (*function)(uint8_t *, int));
 void i2c_attachSlaveTxEvent(i2c_t *obj, void (*function)(void));
+#endif /* HAL_I2C_MODULE_ENABLED */
 
 #ifdef __cplusplus
 }