//////////////////////////////////////////////////////////////////////////////
// Laboratory AVR Microcontrollers Part2
// Program template for lab 9
// Please fill in this information before starting coding
// Authors:
//
// Group:
// Section:
//
// Task:
//
// Todo:
//
//
// Version: 5.0
//////////////////////////////////////////////////////////////////////////////
.nolist ;quartz assumption 4Mhz
.include "m2560def.inc"
;//////////////////////////////////////////////////////////////////////////////
.list
.equ xlength = 100
;//////////////////////////////////////////////////////////////////////////////
; EEPROM - data non volatile memory segment
.ESEG
;//////////////////////////////////////////////////////////////////////////////
; StaticRAM - data memory.segment
.DSEG
.ORG 0x200;0x200; may be omitted this is default value
;//////////////////////////////////////////////////////////////////////////////
; 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
; Interrupts vector table / change to your procedure only when needed
jmp EXT_INT0 ; IRQ0 Handler
jmp EXT_INT1 ; IRQ1 Handler
jmp EXT_INT2 ; IRQ2 Handler
jmp EXT_INT3 ; IRQ3 Handler
jmp EXT_INT4 ; IRQ4 Handler
jmp EXT_INT5 ; IRQ5 Handler
jmp EXT_INT6 ; IRQ6 Handler
jmp EXT_INT7 ; IRQ7 Handler
jmp HPCINT0 ; PCINT0 Handler
jmp HPCINT1 ; PCINT1 Handler
jmp HPCINT2 ; PCINT2 Handler
jmp WDT ; WDT Handler
jmp TIM2_COMPA ; Timer2 CompareA Handler
jmp TIM2_COMPB ; Timer2 CompareB Handler
jmp TIM2_OVF ; Timer2 Overflow Handler
jmp TIM1_CAPT ; Timer1 Capture Handler
jmp TIM1_C0MPA ; Timer1 CompareA Handler
jmp TIM1_C0MPB ; Timer1 CompareB Handler
jmp TIM1_COMPC ; Timer1 CompareC Handler
jmp TIM1_0VF_CUSTOM ; Timer1 Overflow Handler
jmp TIM0_COMPA ; Timer0 CompareA Handler
jmp TIM0_COMPB ; Timer0 CompareB Handler
jmp TIM0_OVF ; Timer0 Overflow Handler
jmp SPI_STC ; SPI Transfer Complete Handler
jmp USART0_RXC ; USART0 RX Complete Handler
jmp USART0_UDRE ; USART0,UDR Empty Handler
jmp USART0_TXC ; USART0 TX Complete Handler
jmp ANA_COMP ; Analog COmparator Handler
jmp HADC ; ADC Conversion Complete Handler
jmp EE_RDY ; EEPROM Ready Handler
jmp TIM3_CAPT ; Timer3 Capture Handler
jmp TIM3_COMPA ; Timer3 CompareA Handler
jmp TIM3_COMPB ; Timer3 CompareB Handler
jmp TIM3_COMPC ; Timer3 CompareC Handler
jmp TIM3_OVF ; Timer3 Overflow Handler
jmp USART1_RXC ; USART1 RX Complete Handler
jmp USART1_UDRE ; USART1,UDR Empty Handler
jmp USART1_TXC ; USART1 TX Complete Handler
jmp TWI ; Two-wire Serial Interface Interrupt Handler
jmp SPM_RDY ; SPM Ready Handler
jmp TIM4_CAPT ; Timer4 Capture Handler
jmp TIM4_COMPA ; Timer4 CompareA Handler
jmp TIM4_COMPB ; Timer4 CompareB Handler
jmp TIM4_COMPC ; Timer4 CompareC Handler
jmp TIM4_OVF ; Timer4 Overlflow Handler
jmp TIM5_CAPT ; Timer5 Capture Handler
jmp TIM5_COMPA ; Timer5 CompareA Handler
jmp TIM5_COMPB ; Timer5 CompareB Handler
jmp TIM5_COMPC ; Timer5 CompareC Handler
jmp TIM5_OVF ; Timer5 Overlflow Handler
jmp USART2_RXC ; USART2 RX Complete Handler
jmp USART2_UDRE ; USART2,UDR Empty Handler
jmp USART2_TXC ; USART2 TX Complete Handler
jmp USART3_RXC ; USART3 RX Complete Handler
jmp USART3_UDRE ; USART3,UDR Empty Handler
jmp USART3_TXC ; USART3 TX Complete Handler
//////////////////////////////////////////////////////////////////////////////
EXT_INT0: ; IRQ0 Handler
EXT_INT1: ; IRQ1 Handler
EXT_INT2: ; IRQ2 Handler
EXT_INT3: ; IRQ3 Handler
EXT_INT4: ; IRQ4 Handler
EXT_INT5: ; IRQ5 Handler
EXT_INT6: ; IRQ6 Handler
EXT_INT7: ; IRQ7 Handler
HPCINT0: ; PCINT0 Handler
HPCINT1: ; PCINT1 Handler
HPCINT2: ; PCINT2 Handler
WDT: ; WDT Handler
TIM2_COMPA: ; Timer2 CompareA Handler
TIM2_COMPB: ; Timer2 CompareB Handler
TIM2_OVF: ; Timer2 Overflow Handler
TIM1_CAPT: ; Timer1 Capture Handler
TIM1_C0MPA: ; Timer1 CompareA Handler
TIM1_C0MPB: ; Timer1 CompareB Handler
TIM1_COMPC: ; Timer1 CompareC Handler
TIM1_0VF: ; Timer1 Overflow Handler
TIM0_COMPA: ; Timer0 CompareA Handler
TIM0_COMPB: ; Timer0 CompareB Handler
TIM0_OVF: ; Timer0 Overflow Handler
SPI_STC: ; SPI Transfer Complete Handler
USART0_RXC: ; USART0 RX Complete Handler
USART0_UDRE:; USART0,UDR Empty Handler
USART0_TXC: ; USART0 TX Complete Handler
ANA_COMP: ; Analog COmparator Handler
HADC: ; ADC Conversion Complete Handler
EE_RDY: ; EEPROM Ready Handler
TIM3_CAPT: ; Timer3 Capture Handler
TIM3_COMPA: ; Timer3 CompareA Handler
TIM3_COMPB: ; Timer3 CompareB Handler
TIM3_COMPC: ; Timer3 CompareC Handler
TIM3_OVF: ; Timer3 Overflow Handler
USART1_RXC: ; USART1 RX Complete Handler
USART1_UDRE:; USART1,UDR Empty Handler
USART1_TXC: ; USART1 TX Complete Handler
TWI: ; Two-wire Serial Interface Interrupt Handler
SPM_RDY: ; SPM Ready Handler
TIM4_CAPT: ; Timer4 Capture Handler
TIM4_COMPA: ; Timer4 CompareA Handler
TIM4_COMPB: ; Timer4 CompareB Handler
TIM4_COMPC: ; Timer4 CompareC Handler
TIM4_OVF: ; Timer4 Overlflow Handler
TIM5_CAPT: ; Timer5 Capture Handler
TIM5_COMPA: ; Timer5 CompareA Handler
TIM5_COMPB: ; Timer5 CompareB Handler
TIM5_COMPC: ; Timer5 CompareC Handler
TIM5_OVF: ; Timer5 Overlflow Handler
USART2_RXC: ; USART2 RX Complete Handler
USART2_UDRE:; USART2,UDR Empty Handler
USART2_TXC: ; USART2 TX Complete Handler
USART3_RXC: ; USART3 RX Complete Handler
USART3_UDRE:; USART3,UDR Empty Handler
USART3_TXC: ; USART3 TX Complete Handler
reti ; return from all no used
TIM1_0VF_CUSTOM:
; re init timer start value
ldi r19, 0xFE;BD
ldi r20, 0xFF;F0
sts TCNT1H, r20
sts TCNT1L, r19
; r21 is > 0 during 2s peroid between each full cycle
; (reading values from table is skipped 8 times)
; (each skipped cycle causes r21 to be decremented, until it reaches 0)
cpi r21, 0x00
brne decrement_delay_counter
; copy table address
mov ZL, XL
mov ZH, XH
; add table adress to index
add ZL, r17
; add carryover to ZH
ldi r25, 0x00
adc ZH, r25
; read table value to register
;ldi r25, 0x01
out RAMPZ, r22
elpm r23,Z
; display to port
out PORTC, r23
; increment index
inc r17
; check if index at table end
cpi r23, 0x00;r17, 0xF1
brne end_of_handler
; indexed through whole table, reset index, set delay counter to 8
ldi r17, 0x00
ldi r21, 0x08
jmp end_of_handler
decrement_delay_counter:
dec r21
end_of_handler:
reti
;//////////////////////////////////////////////////////////////////////////////
; Program start
RESET:
cli ; disable all interrupts
// Set stack pointer to top of RAM
ldi R16, HIGH(RAMEND)
out SPH, R16
ldi R16, LOW(RAMEND)
out SPL, R16
; init ports
ldi r16,0xFF
out DDRA, r16
out PORTA,r16
ldi r16,0xFF
out DDRB, r16
out PORTB,r16
ldi r16,0xFF
out DDRC, r16
out PORTC,r16
ldi r16,0xFF
out DDRD, r16
out PORTD,r16
// 1. Place here code related to initialization of ports and interrupts
// for instance:
// port A as input and switching Pull-up resistors on
// DDRA=0xFF
// PORTA=0xFF
// port C as output and initial value FF
// DDRB=0xFF
// PORTA=0xFF
//
// Writing a logic one to PINxn toggles the value of PORTxn, independent on the value of
DDRxn
// Note that the SBI instruction can be used to toggle one single bit in a port.
; set initial timer value ~40000
/*ldi r19, 0x40
ldi r20, 0x9C*/
ldi r19, 0xFE;BD
ldi r20, 0xFF;F0
sts TCNT1H, r20
sts TCNT1L, r19
; set prescaler to 1/256
ldi r19, TCCR1B
ori r19, 0x04
sts TCCR1B, r19
; enbable tim1 overflow
ldi r19, TIMSK1
ori r19, 0x01
sts TIMSK1, r19
// 2. Enable interrupts if needed sei
//------------------------------------------------------------------------------
// 3. Load initial values of index registers
// Z, X, Y
; Set Z pointer to message
ldi XH,high(TAB_ROM<<1)
ldi XL,low(TAB_ROM<<1)
ldi r22, byte3(TAB_ROM<<1)
; load 0 to index register
ldi r17, 0x00
//------------------------------------------------------------------------------
// Program end - Ending loop
//------------------------------------------------------------------------------
End:
rjmp END
//------------------------------------------------------------------------------
// Table Declaration - place here test values
// Test with different table values and different begin addresses of table (also above 0x8000)
//
;.org 0x8000
.org 0x7FFC
TAB_ROM:
.db 0x01, 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
//------------------------------------------------------------------------------