SMIW LAB 7

//////////////////////////////////////////////////////////////////////////////
// Laboratory AVR Microcontrollers Part1
// Program template for ASM lab 7
// Please fill in this information before starting coding
// Authors:
//. Write a program that copies data from TAB_ROM to TAB_RAM. Copying should
// start after any button is pressed. Turn LED connected to Port B.6 to state ON
// after that.
//1.
//2.
//3.
//4.
// Group:
// Section:
// Task number:
//
// Version: 2020v3.0
//////////////////////////////////////////////////////////////////////////////
.nolist ;quartz assumption 4Mhz
.include "m2560def.inc"
//////////////////////////////////////////////////////////////////////////////
// Change this variable to test different values from 0 to 100
.equ xlength = 100
;//////////////////////////////////////////////////////////////////////////////
; EEPROM - data non-volatile memory segment Please don't use
.ESEG
;//////////////////////////////////////////////////////////////////////////////
; StaticRAM - data memory.segment
.DSEG
.ORG 0x200; may be omitted this is the default value
; Destination table (xlengthx bytes).
TAB_RAM: .BYTE xlength
;//////////////////////////////////////////////////////////////////////////////
; CODE - Program memory segment
; Please Remember that it is "word" address space
;
.CSEG
.org 0x0000 ; may be omitted this is default value
jmp RESET ; Reset Handler

;//////////////////////////////////////////////////////////////////////////////
; Program start
RESET:
 cli ; disable all interrupts
// Set stack pointer to the top of RAM
 ldi R16, HIGH(RAMEND)
 out SPH, R16
 ldi R16, LOW(RAMEND)
 out SPL, R16
// 1. Place here code related to initialization of all ports
// for instance: port A as input and no pullups
// DDRA=0x00
clr r16				; ustawienie 0x00 w rejestrze
ser r17				; ustawienie 0xFF w rejestrze

out DDRA, r16		; PORTA - jako wejsciowy
out PORTA, r17		; PORTA - wejscia PULL-UP
out DDRB, r17		; PORTB - jako wyjscie
out PORTB, r17		; PORTB - wyjscie w stan niski by diody nie œwieci³y
// PORTA=0x00
// port B as output and initial value FF
// DDRB=0xFF
// PORTB=0xFF
 //
 // Writing a logic one to PINxn toggles the value of PORTxn, regardless of the value of DDRxn
 // Note that the SBI instruction can be used to toggle one single bit in a port.
 // for instance: sbi DDRB, 0
// 2. Enable interrupts if needed
// sei

//------------------------------------------------------------------------------
// 3. Load initial values of index registers
// Z, X, Y
ldi ZL, BYTE3(TAB_ROM<<1)
out RAMPZ, ZL
ldi ZH, BYTE2(TAB_ROM<<1)
ldi ZL, BYTE1(TAB_ROM<<1)

ldi YH, BYTE2(TAB_RAM)
ldi YL, BYTE1(TAB_RAM)

CZEKAJ:
in r16, PINA
cpi r16, 0xFF
breq CZEKAJ

PETLA_KOPIUJACA:
elpm R16, Z+ // nastepna wartosc do R16
cpi R16, 0
breq ZERO // jesli zero, skok do ZERO
rjmp LADUJ

ZERO:
elpm R16, Z // nastepna wartosc do r16
cpi R16, 0
breq KONIEC // jesli zero, skok do ZERO
ldi R16, 0

LADUJ:
st Y+, R16
rjmp PETLA_KOPIUJACA

KONIEC:
// wlaczenie leda na porcie b.6
cbi PORTB, 6




//------------------------------------------------------------------------------
// Program end - Ending loop
//------------------------------------------------------------------------------
End:
 rjmp END
//------------------------------------------------------------------------------
// Table Declaration - place here test values
// Test with other table values and different begin addresses of a table (also above 0x8000)
//
//.org 0x8000
TAB_ROM: .db 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x1F
//.db 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1F, 0x1F
/*.db 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F
.db 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F
.db 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F
.db 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F
.db 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F
.db 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F
.db 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F
.db 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F
.db 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaA, 0xaB, 0xaC, 0xaD, 0xAE, 0xAF
.db 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF
.db 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF
.db 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF
.db 0xFF, 0xFE, 0xFD, 0xFC, 0xFB, 0xFA, 0xF9, 0xF8, 0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xF0*/
// please correct end of this table according to the guidelines given by the teacher
.db 0x00,0x00
.EXIT
//-------------