If I look at the STM32F410RB datasheet on page , I can see the following pin name:PB13 - I2C4_SMBAPB14 - I2C4_SDA (FM+) used for Fm+ mode (1MHz)PB15 - I2C4_SCL (FM+) used for Fm+ mode (1MHz)So far, so good, but when I try to configure these pins in t...