Pull-request #945 - Fixed STM32L0 based platforms I2C alternate function

Author: mluis1

src/boards/B-L072Z-LRWAN1/i2c-board.c

@@ -45,8 +45,8 @@ void I2cMcuInit( I2c_t *obj, I2cId_t i2cId, PinNames scl, PinNames sda )
 
     I2cHandle.Instance  = ( I2C_TypeDef * )I2C1_BASE;
 
-    GpioInit( &obj->Scl, scl, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF1_I2C1 );
-    GpioInit( &obj->Sda, sda, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF1_I2C1 );
+    GpioInit( &obj->Scl, scl, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF4_I2C1 );
+    GpioInit( &obj->Sda, sda, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF4_I2C1 );
 }
 
 void I2cMcuFormat( I2c_t *obj, I2cMode mode, I2cDutyCycle dutyCycle, bool I2cAckEnable, I2cAckAddrMode AckAddrMode, uint32_t I2cFrequency )
@@ -82,8 +82,8 @@ void I2cMcuResetBus( I2c_t *obj )
     __HAL_RCC_I2C1_FORCE_RESET( );
     __HAL_RCC_I2C1_RELEASE_RESET( );
 
-    GpioInit( &obj->Scl, I2C_SCL, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF1_I2C1 );
-    GpioInit( &obj->Sda, I2C_SDA, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF1_I2C1 );
+    GpioInit( &obj->Scl, I2C_SCL, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF4_I2C1 );
+    GpioInit( &obj->Sda, I2C_SDA, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF4_I2C1 );
 
     I2cMcuFormat( obj, MODE_I2C, I2C_DUTY_CYCLE_2, true, I2C_ACK_ADD_7_BIT, 400000 );
 }

src/boards/NucleoL073/i2c-board.c

@@ -45,8 +45,8 @@ void I2cMcuInit( I2c_t *obj, I2cId_t i2cId, PinNames scl, PinNames sda )
 
     I2cHandle.Instance  = ( I2C_TypeDef * )I2C1_BASE;
 
-    GpioInit( &obj->Scl, scl, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF1_I2C1 );
-    GpioInit( &obj->Sda, sda, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF1_I2C1 );
+    GpioInit( &obj->Scl, scl, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF4_I2C1 );
+    GpioInit( &obj->Sda, sda, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF4_I2C1 );
 }
 
 void I2cMcuFormat( I2c_t *obj, I2cMode mode, I2cDutyCycle dutyCycle, bool I2cAckEnable, I2cAckAddrMode AckAddrMode, uint32_t I2cFrequency )
@@ -82,8 +82,8 @@ void I2cMcuResetBus( I2c_t *obj )
     __HAL_RCC_I2C1_FORCE_RESET( );
     __HAL_RCC_I2C1_RELEASE_RESET( );
 
-    GpioInit( &obj->Scl, I2C_SCL, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF1_I2C1 );
-    GpioInit( &obj->Sda, I2C_SDA, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF1_I2C1 );
+    GpioInit( &obj->Scl, I2C_SCL, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF4_I2C1 );
+    GpioInit( &obj->Sda, I2C_SDA, PIN_ALTERNATE_FCT, PIN_OPEN_DRAIN, PIN_NO_PULL, GPIO_AF4_I2C1 );
 
     I2cMcuFormat( obj, MODE_I2C, I2C_DUTY_CYCLE_2, true, I2C_ACK_ADD_7_BIT, 400000 );
 }