(SOLVED) I2C, change pins

Hi all,

i want to move the I2C pins from PORTB 10/11 to PORTB 8/9. I have no CAN device, so this PINS are free to use.

i set:

#define HW_HAS_NO_CAN

#define HW_I2C_DEV              I2CD1

#define HW_I2C_GPIO_AF          GPIO_AF_I2C1

#define HW_I2C_SCL_PORT         GPIOB

#define HW_I2C_SCL_PIN          8

#define HW_I2C_SDA_PORT         GPIOB

#define HW_I2C_SDA_PIN          9

and enable I2C1 in mcuconf.h

but now signal on this pins :( is it correct, that the defines for the PINs and PORTs are nowhere used in the code ? grep found no match

do i have to change something more ?

Georg