PX0 Control PX0 I2C1_SCK_PIN I2C1_SDA_PIN I2C1_SDA_PIN == PX0 ... UART0_RX_PIN UART0_TX_PIN UART0_RX_PIN == PX0 I2C1_SCK_PIN == PX0 UART0_TX_PIN == PX0 SDA SCK TX RX ... I2C1 UART0 CONFIG STRENGTH DRIVE