Write the code needed to perform the following operation and insert it as needed in the program shell below. Setup Port A, pin 4 as input, with pull up resistor enabled, Setup Port H, all pins as an outputs, Continuously read the input on Port A, pin 4 Write to Port H, all pins (all 0s or 1s) the data read from Port A, pin 4 (0 or 1) Write the code so as to not affect any other port bits or setup INCLUDE .DEF TEMP=R16 .CSEG ; The start of the code segment .ORG 0X0000 ; Set the beginning of code at the reset interrupt vector RJMP MAIN ;jump to main program from the reset interrupt MAIN: LDI TEMP, LOW(RAMEND) ; Setup Stack OUT SPL, TEMP ; Set SPL to the low byte of RAMEND LDI TEMP, HIGH(RAMEND) ; OUT SPH, TEMP ; Set SPH to the high byte of RAMEND ;insert code here LOOP: ; A continuous loop is an essential ; part of any embedded program ;insert code here RJMP LOOP ; Start the LOOP over
Write the code needed to perform the following operation and insert it as needed in the program shell below. Setup Port A, pin 4 as input, with pull up resistor enabled, Setup Port H, all pins as an outputs, Continuously read the input on Port A, pin 4 Write to Port H, all pins (all 0s or 1s) the data read from Port A, pin 4 (0 or 1) Write the code so as to not affect any other port bits or setup INCLUDE .DEF TEMP=R16 .CSEG ; The start of the code segment .ORG 0X0000 ; Set the beginning of code at the reset interrupt vector RJMP MAIN ;jump to main program from the reset interrupt MAIN: LDI TEMP, LOW(RAMEND) ; Setup Stack OUT SPL, TEMP ; Set SPL to the low byte of RAMEND LDI TEMP, HIGH(RAMEND) ; OUT SPH, TEMP ; Set SPH to the high byte of RAMEND ;insert code here LOOP: ; A continuous loop is an essential ; part of any embedded program ;insert code here RJMP LOOP ; Start the LOOP over
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
- Write the code needed to perform the following operation and insert it as needed in the
program shell below.
- Setup Port A, pin 4 as input, with pull up resistor enabled,
- Setup Port H, all pins as an outputs,
- Continuously read the input on Port A, pin 4
- Write to Port H, all pins (all 0s or 1s) the data read from Port A, pin 4 (0 or 1)
- Write the code so as to not affect any other port bits or setup
INCLUDE <m2560def.inc>
.DEF TEMP=R16
.CSEG ; The start of the code segment
.ORG 0X0000 ; Set the beginning of code at the reset interrupt
RJMP MAIN ;jump to main program from the reset interrupt
MAIN:
LDI TEMP, LOW(RAMEND) ; Setup Stack
OUT SPL, TEMP ; Set SPL to the low byte of RAMEND
LDI TEMP, HIGH(RAMEND) ;
OUT SPH, TEMP ; Set SPH to the high byte of RAMEND
;insert code here
LOOP: ; A continuous loop is an essential
; part of any embedded program
;insert code here
RJMP LOOP ; Start the LOOP over
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