Short Answer Write C code to setup PORTB in the following configuration. Do not

Question

Short Answer Write C code to setup PORTB in the following configuration. Do not write an entire C program, only write the lines required to perform the following configuration 1. PB7 through PB4 are inputs with internal pull up resistors enabled and -PB3 through PBO are outputs and set to logic high (5 Points) 2. low. Assume the PB3 has previously been configured as an input with pull-up resistor enabled. Write a while loop that executes and continues executing as long as PB3 is logic (5 Points)

Explanation / Answer

1.

ANSEL = ANSELH = 0;                   // All the I/O pins are configured as digital

PORTB = 0;                                        // Clear PORTB pins

TRISB = 0b11110000;                       // All the pins with 1 are input pins & with 0 are output pins

RBPU = 0;                                          // Enable Pull-up resistors

PORTB.PB0 = 1;                                // Set output pins to logic high

PORTB.PB1 = 1;

PORTB.PB2 = 1;

PORTB.PB3 = 1;

2.

while(PORTB.PB3     == 0){}

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