$6$

Based on the definition of the $C$ union below, answer the following questions.

Write the declaration of port$\_$d and tris$\_$d to work as PORTD and TRISD.

Use the BT$8$ in the union below to initialize the direction $($input$/$output$)$ as shown in the union below.

If $PB1$ is low, turn on the Buzzer. Do not use BT$8$ field. No debouncing.

Toggle all relays by using the relays field and the correct logical operations. Do not use BT$8$ field.

$(14$ Points$)$

typedef union $\{$

unsigned char BT$8$; $//$define the field BT$8$ to use it as a byte here

struct structure of $3$ Leds, PB$1,$ PB$2,2$ Relays, Buzzer

unsigned LEDs :$3\frac{\text{;}}{\frac{?}{?}}$ field Leds as one field for $3$ LEDs

unsigned PB$1$ : $1$; $//$field PB$1($one Push button$)$

unsigned PB$2$ : $1$; $//$field PB$2($one Push button$)$

unsigned Relays : $2$ ; $//$field Relays $(2$ relays as one field$)$

unsigned Buzzer : $1$ ; $//$field Buzzer $($output$,$ one bit$)$

$\}$

$\}$ubyte;