Question
In MPLAB XIDE create a program using assembly to produce three different LED combinations using 4 LED lights and 4 switches that correspond to each
In MPLAB XIDE create a program using assembly to produce three different LED combinations using 4 LED lights and 4 switches that correspond to each LED. There will be 4 inputs and 4 outputs. The program includes three levels (the three LED combinations). Each level will be a random combination (i.e. red, blue, green, orange). The player will then repeat the combinations as accurately as possible. If the player repeats the led sequence correctly, the code will branch to the next set of outputs the player moves to the next level). If the user repeats the LED sequence incorrectly all LEDs will turn on, all LEDs are clear and the game restarts the code will branch back to the beginning, which restarts the game. Here is the template. I already tried writing my own code in the temple. Please make changes where is needed to make this code work.
;******************************************************************************
; This file is a basic template for creating relocatable assembly code for *
; a PIC18F1330. Copy this file into your project directory and modify or *
; add to it as needed. *
; *
; The PIC18FXXXX architecture allows two interrupt configurations. This *
; template code is written for priority interrupt levels and the IPEN bit *
; in the RCON register must be set to enable priority levels. If IPEN is *
; left in its default zero state, only the interrupt vector at 0x008 will *
; be used and the WREG_TEMP, BSR_TEMP and STATUS_TEMP variables will not *
; be needed. *
; *
; Refer to the MPASM User's Guide for additional information on the *
; features of the assembler and linker. *
; *
;******************************************************************************
; *
; Filename: *
; Date: *
; File Version: *
; *
; Author: *
; Company: *
; *
;******************************************************************************
; *
; Files required: P18F1330.INC *
; *
;******************************************************************************
LIST P=18F1330, F=INHX32 ;directive to define processor and file format
#include
;******************************************************************************
;Configuration bits
;Microchip has changed the format for defining the configuration bits, please
;see the .inc file for futher details on notation. Below are a few examples.
; Oscillator Selection:
; CONFIG OSC = LP ;LP
CONFIG OSC = INTIO1
CONFIG WDT = OFF
;******************************************************************************
;Variable definitions
; These variables are only needed if low priority interrupts are used.
; More variables may be needed to store other special function registers used
; in the interrupt routines.
UDATA
WREG_TEMP RES 1 ;variable in RAM for context saving
STATUS_TEMP RES 1 ;variable in RAM for context saving
BSR_TEMP RES 1 ;variable in RAM for context saving
UDATA_ACS
EXAMPLE RES 1 ;example of a variable in access RAM
;******************************************************************************
;EEPROM data
; Data to be programmed into the Data EEPROM is defined here
DATA_EEPROM CODE 0xf00000
DE "Test Data",0,1,2,3,4,5
;******************************************************************************
;Reset vector
; This code will start executing when a reset occurs.
RESET_VECTOR CODE 0x0000
goto Main ;go to start of main code
;******************************************************************************
;High priority interrupt vector
; This code will start executing when a high priority interrupt occurs or
; when any interrupt occurs if interrupt priorities are not enabled.
HI_INT_VECTOR CODE 0x0008
bra HighInt ;go to high priority interrupt routine
;******************************************************************************
;Low priority interrupt vector
; This code will start executing when a low priority interrupt occurs.
; This code can be removed if low priority interrupts are not used.
LOW_INT_VECTOR CODE 0x0018
bra LowInt ;go to low priority interrupt routine
;******************************************************************************
;High priority interrupt routine
; The high priority interrupt code is placed here.
CODE
HighInt:
; *** high priority interrupt code goes here ***
retfie FAST
;******************************************************************************
;Low priority interrupt routine
; The low priority interrupt code is placed here.
; This code can be removed if low priority interrupts are not used.
LowInt:
movff STATUS,STATUS_TEMP ;save STATUS register
movff WREG,WREG_TEMP ;save working register
movff BSR,BSR_TEMP ;save BSR register
; *** low priority interrupt code goes here ***
movff BSR_TEMP,BSR ;restore BSR register
movff WREG_TEMP,WREG ;restore working register
movff STATUS_TEMP,STATUS ;restore STATUS register
retfie
;******************************************************************************
;Start of main program
; The main program code is placed here.
Main:
BSF OSCCON, 6 ;Oscillator set to 8 MHz
BSF OSCCON, 5
BSF OSCCON, 4
BSF TRISB, 4 ;Init PORTB bit 0 as an output port
BCF TRISB, 5
BCF TRISB, 0
BCF TRISB, 1
BCF TRISB, 2
BCF T0CON, 5 ;Init TMR0 as a timer (not an event counter)
BCF T0CON, 6 ;Init TMR0 as a 16-bit counter (not 8 bit)
BCF T0CON, 3 ;Init TMR0 PreScaler ON
BCF T0CON, 7 ;Init Timer to be OFF
BCF PORTB, 5 ;Init PORTB Bit 0 Low
BCF PORTB, 0
BCF PORTB, 1
BCF PORTB, 2
NOTPRESSED:
BTFSS PORTB, 4
BRA NOTPRESSED
BRA PRESSED
PRESSED:
;------------------------------------------------------------------------------
LEVEL1:
; 1ST LED
BSF T0CON, 2 ;Prescaler 1:128
BSF T0CON, 1 ;Prescaler 1:128
BSF T0CON, 0 ;Prescaler 1:128
MOVLW 0x48 ;Starting Count = 0000
MOVWF TMR0H
MOVLW 0xE4
MOVWF TMR0L
BSF T0CON, 7 ;Turn Timer 0N
BSF PORTB, 0
WaitMoreLEVEL1LED1:
BTFSS INTCON, TMR0IF ;Check for Count = FFFF
BRA WaitMoreLEVEL1LED1
BCF T0CON, 7 ;Turn Timer OFF
BCF INTCON, TMR0IF ;Reset TIMER interrupt low
BCF PORTB, 0
; 2ND LED
BSF T0CON, 2 ;Prescaler 1:128
BSF T0CON, 1 ;Prescaler 1:128
BSF T0CON, 0 ;Prescaler 1:128
MOVLW 0x48 ;Starting Count = 0000
MOVWF TMR0H
MOVLW 0xE4
MOVWF TMR0L
BSF T0CON, 7 ;Turn Timer 0N
BSF PORTB, 1
WaitLEVEL1LED2:
BTFSS INTCON, TMR0IF ;Check for Count = FFFF
BRA WaitLEVEL1LED2
BCF T0CON, 7 ;Turn Timer OFF
BCF INTCON, TMR0IF ;Reset TIMER interrupt low
BCF PORTB, 1
; 3RD LED
BSF T0CON, 2 ;Prescaler 1:128
BSF T0CON, 1 ;Prescaler 1:128
BSF T0CON, 0 ;Prescaler 1:128
MOVLW 0x48 ;Starting Count = 0000
MOVWF TMR0H
MOVLW 0xE4
MOVWF TMR0L
BSF T0CON, 7 ;Turn Timer 0N
BSF PORTB, 5
WaitMoreMORELEVEL1LED3:
BTFSS INTCON, TMR0IF ;Check for Count = FFFF
BRA WaitMoreMORELEVEL1LED3
BCF T0CON, 7 ;Turn Timer OFF
BCF INTCON, TMR0IF ;Reset TIMER interrupt low
BCF PORTB, 5
;4TH LED
BSF T0CON, 2 ;Prescaler 1:128
BSF T0CON, 1 ;Prescaler 1:128
BSF T0CON, 0 ;Prescaler 1:128
MOVLW 0x48 ;Starting Count = 0000
MOVWF TMR0H
MOVLW 0xE4
MOVWF TMR0L
BSF T0CON, 7 ;Turn Timer 0N
BSF PORTB, 2
WaitMoreMOREMORELEVEL1LED4:
BTFSS INTCON, TMR0IF ;Check for Count = FFFF
BRA WaitMoreMOREMORELEVEL1LED4
BCF T0CON, 7 ;Turn Timer OFF
BCF INTCON, TMR0IF ;Reset TIMER interrupt low
BCF PORTB, 2
;-----------------------------------------------------------------------------
;******************************************************************************
;End of program
END
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