PIC

Question 1

What does #fuses NOWDT do?

Answer 1

Disables the watch dog timer

Question 2

What does delay() do?

Answer 2

Stops the entire program

Question 3

What does #fuses WDT do?

Answer 3

Enables the watch dog timer

Question 4

What does #fuses NOPUT do?

Answer 4

Means there’s no power up timer

Question 5

What does #fuses NOPROTECT do?

Answer 5

Allows the code to be read from the chip

Question 6

What does #fuses NOBROWN do?

Answer 6

Disables brown out protection on the chip

Question 7

What does #fuses NOMCLR do?

Answer 7

Allows use of the internal reset circuitry

Question 8

What does #fuses NOLVP do?

Answer 8

Disables low voltage programming

Question 9

What does #fuses NOCPD do?

Answer 9

Means there’s no EE protection

Question 10

What does #fuses RSTOSC_HFINTRC_64MHZ do?

Answer 10

Allows the use of the 64 MHz internal oscillator

Question 11

What are the 5 steps to implement program?

Answer 11

1) #FUSES
2) #use delay (internal = ‘’ clock_out)
3) set up structure (IO pin definition)
(in main void)
4) set IO port direction
5) actual implementation

Question 12

Why would you use a volatile character array?

Answer 12

To allow the character array be changed externally at any time

Question 13

What is serial buffer?

Answer 13

Is an internal data store

Question 14

What does getc() do?

Answer 14

Fetches a character from the terminal

Question 15

What does the duty cycle do?

Answer 15

Sets the amount of time that the pwm is high for

Question 16

What are sinks and sources?

Answer 16

Source provides power, sink takes power

Question 17

What are the pros and cons of lookup tables?

Answer 17

It’s faster than calculating each time however it takes up more memory

Question 18

How do you set up the structure?

Answer 18

1) struct (IO port definitions)
{
data type, name of variable : 6 (for 6 bit);
}

Question 19

How of you map the structure to the registers?

Answer 19

byte IOportdirection = memory location (hex number)

Question 20

What are the three memory locations?

Answer 20

Port - reads
Latch - writes
tris - direction