PIC Flashcards
What does #fuses NOWDT do?
Disables the watch dog timer
What does delay() do?
Stops the entire program
What does #fuses WDT do?
Enables the watch dog timer
What does #fuses NOPUT do?
Means there’s no power up timer
What does #fuses NOPROTECT do?
Allows the code to be read from the chip
What does #fuses NOBROWN do?
Disables brown out protection on the chip
What does #fuses NOMCLR do?
Allows use of the internal reset circuitry
What does #fuses NOLVP do?
Disables low voltage programming
What does #fuses NOCPD do?
Means there’s no EE protection
What does #fuses RSTOSC_HFINTRC_64MHZ do?
Allows the use of the 64 MHz internal oscillator
What are the 5 steps to implement program?
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
Why would you use a volatile character array?
To allow the character array be changed externally at any time
What is serial buffer?
Is an internal data store
What does getc() do?
Fetches a character from the terminal
What does the duty cycle do?
Sets the amount of time that the pwm is high for
What are sinks and sources?
Source provides power, sink takes power
What are the pros and cons of lookup tables?
It’s faster than calculating each time however it takes up more memory
How do you set up the structure?
1) struct (IO port definitions)
{
data type, name of variable : 6 (for 6 bit);
}
How of you map the structure to the registers?
byte IOportdirection = memory location (hex number)
What are the three memory locations?
Port - reads
Latch - writes
tris - direction
