microprocessors
1.) What is the main difference between a function and an interrupt service routine (ISR)?
2.) What is the purpose of the interrupt vector table?
microprocessors 1.) What is the main difference between a function and an interrupt service routine (ISR)?...
Problem 3: Interrupt and Interrupts Handlers a) Can the phrases Interrupt Service Routine and Interrupt Handler be used interchangeably? b) Laboratory Assignment 2 has two Interrupt Handlers, one for a pin on PortF and one for the System Timer. Please state what each interrupt's function is and what event would cause the interrupt to occur. c) Review Lab 2 and provide pseudo code or a flow diagram for the program, Problem 3: Interrupt and Interrupts Handlers a) Can the phrases...
interrupts..microprocessors Introduction to Microprocessors We Woods IN MOV d e Roubos 8 Interrupts A. From the wikipedia article, name at least nine typical uses of interrupts. B. How can a microprocessor keep time, using interrupts ? C. In systems that are equipped with a power-off interrupt, what is the purpose of the power-off interrupt (many UNIX and Linux systems have a power off interrupt) ? D. The steps of interrupt processing in a micro-processor are broadly analogous to the steps...
1. Define these terms associated with Interrupt Service Routines (ISRs) [textbook Ch. 6] a. vectored interrupt b. NMI c. ?atenç? (related to ISR) d. GIE 2. a. What is pushed onto the stack at the start of an interrupt? Why? b. What are 4 common applications of interrupts?
State how to enable an interrupt by a NVIC function. What is the difference between the following two statements? NVIC->ISER[1] |= (1<<6); //enableIRQ(USART2_IRQn) NVIC_EnableIRQ ( 38 ); // 38: USART2 interrupt no Find out the NVIC functions for the following operation Resets the whole system including peripherals. Sets the priority grouping. Returns the value of the current priority grouping. Enables the interrupt IRQn. Disables the interrupt IRQn. Sets the priority for the interrupt IRQn. Returns the priority for the specified interrupt....
QUESTION 1. [14 marks] a) What is the main difference between programmed I/O and interrupt I/O? [4] b) During the initialization of programmed I/O, a test 1/0 command is issued by CPU. Explain the function of test I/O command. [4] c) What is the advantage of direct memory access (DMA) compared to programmed I/O? [4] d) When a DMA module takes control of a bus, and while it retains control of the bus, what does the processor do? [2]
. It is desired to write an interrupt driven software for the robot. Two global variables namely, currentStatus and previous Status should be declared that represent the current and previous state of the robot, Initially, both should be set to STOPPED. The robot can have several states (for example, STOPPED, MOVING, COLLECTING, etc.). Write the following C function to initialize all /O ports (5 points) C function to initial the ADC (5 points) a. b. C. d. e. f. C...
What is Interrupt? Draw the Interrupt Vector Table (IVT) for the Interrupt occurred in the following ASM code. CSM: ISR for INT 19 H: 0000: 3000 :- MOV AX, 0200 H 0F010:- L1: DEC AX 0000: 3002 :- MOV BX, 0000 H 0F011:- JNZ AX, L1 0000: 3004 :- INC BX 0F012:- IRET 0000: 3005 :- INT 19 H 0000: 3006 :- MOV DX, BX
Using 68HC12, The following code in C has a serious flaw in the interrupt service routine, what is it? void interrupt 56 port_p_handler() { if ((PIFP & 0x03) == 0x03) { PORTB = PORTB | 0x04; } ms_delay(20); PIFP = PIFB | 0xFF; }
b. The program code below involves IO. The first line of an interrupt (IRQ) service routine is also shown. Describe the purpose of each line of code and insert suitable comments EQU $1003 EQU $1007 EQU $4FFF IRQVECT EQU SFFF2 PORTC DDRC STACK ORG $1000 START SEI #STACK LDS LDD #INTSERV STD IRQVECT #S0F LDAA STAA DDRC PORTC STAA CLI More code ORG $2000 INTSERV LDAB PORTC [8 marks b. The program code below involves IO. The first line of...
The use of which of the following AVR instructions within an interrupt service routine would necessitate saving the status register at the routine? a. bset 1 b. push rO c. rjmp loop Od. sbis $16, 4 e. None of the above The use of which of the following AVR instructions within an interrupt service routine would necessitate saving the status register at the routine? a. bset 1 b. push rO c. rjmp loop Od. sbis $16, 4 e. None of...