void port_b_init(void) {
    MDR_RST_CLK->PER_CLOCK |= RST_CLK_PER_CLOCK_PCLK_EN_PORTB;

    /* ADC 1273PV9R */

    /***** OUTPUT *****/
    /* SCLK - TIM3 CH3 PWM */
    PORT_InitTypeDef pb5;
    pb5.PORT_Pin     = PORT_Pin_5;
    pb5.PORT_OE      = PORT_OE_OUT;
    pb5.PORT_MODE  = PORT_MODE_DIGITAL;
    pb5.PORT_FUNC  = PORT_FUNC_OVERRID;
    pb5.PORT_SPEED = PORT_SPEED_FAST;       /* should be <= 50 ns */
    PORT_Init(MDR_PORTB, &pb5);

    /* #RFS & #TFS & A0 */
    PORT_InitTypeDef pb678;
    pb678.PORT_Pin   = PORT_Pin_6 | PORT_Pin_7 | PORT_Pin_8;
    pb678.PORT_OE    = PORT_OE_OUT;
    pb678.PORT_MODE  = PORT_MODE_DIGITAL;
    pb678.PORT_FUNC  = PORT_FUNC_PORT;
    pb678.PORT_SPEED = PORT_SPEED_FAST;
    PORT_Init(MDR_PORTB, &pb678);

    /***** INPUT *****/
    /* #DRDY */
    PORT_InitTypeDef pb9;
    pb9.PORT_Pin     = PORT_Pin_9;
    pb9.PORT_OE      = PORT_OE_IN;
    pb9.PORT_MODE  = PORT_MODE_DIGITAL;
    pb9.PORT_FUNC  = PORT_FUNC_PORT;
    pb9.PORT_SPEED = PORT_SPEED_FAST;
    PORT_Init(MDR_PORTB, &pb9);

    /* INPUT/OUTPUT */
    /* SDATA */
    PORT_InitTypeDef pb10;
    pb10.PORT_Pin   = PORT_Pin_10;
    pb10.PORT_MODE  = PORT_MODE_DIGITAL;
    pb10.PORT_FUNC  = PORT_FUNC_PORT;
    pb10.PORT_SPEED = PORT_SPEED_FAST;
    PORT_Init(MDR_PORTB, &pb10);
}