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THE AVR FAMILY

software


;* A P P L I C A T I O N N O T E F O R T H E A V R F A M I L Y



;* Number : ET-AVR V1/V2

;* File Name :"ADC1.asm"

;* Title :READ ADC chanel 1 to RS232

;* Date /3/42

;* Version

;* Support telephone 1120-1 (ETT)

;* Support fax (ETT)

;* Support www :www.etteam.com,www.ett.co.th

;* Target MCU :AT90S8535/AT90LS8535

.include "8535def.inc"

.org $000

rjmp RESET ;Reset Handle

.org $00E ;interrupt vector for ADC

rjmp ATOD

;* Test/Example Program

.def temp = r19

RESET: ldi temp,low(RAMEND)

out SPL,temp ;init Stack Pointer Low

ldi temp,high(RAMEND)

out SPL+1,temp ;init Stack Pointer High

sei ;clear golbal interrupt

cbi UCR,RXCIE ;clesr rx interrupt

cbi UCR,TXCIE ;clesr tx interrupt

cbi UCR,UDRIE ;clesr data empty interrupt

cbi UCR,CHR9 ;send 8 data

ldi r17,51

out UBRR,r17 ;baud 9600 at 8MHz Xtal

sbi UCR,TXEN ;set pin tx as serial TX

ldi r17,0x00 ;set porta as Hi impledance

out DDRA,r17

out PORTA,r17

ldi r17,0x00 ;set chanl 1 ADC

out ADMUX,r17

ldi r17,0b00011000 ;set sampling rate

out ADCSR,r17

sbi ADCSR,ADEN ;enable ADC

adcloop1: sbi ADCSR,ADSC ;start conversion

rjmp adcloop1

;* program for interrupt service routine ADC *

ATOD: in r21,ADCL ;read low byte

in r22,ADCH ;read high byte

mov r23,r21

andi r22,0x03 ;detect 3 bit low of ADCH

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r22

ldi r22,0

adc r31,r22

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

swap r21

andi r21,0x0F ;detect 4 bit high of ADCL

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r21

ldi r21,0

adc r31,r21

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

andi r23,0x0F ;detect 4 bit low of ADCL

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r23

ldi r23,0

adc r31,r23

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

ldi r20,0x0A ;send 0AH to rs232

rcall TX232

ldi r20,0x0D ;send 0DH to rs232

rcall TX232

reti

TX232: sbis USR,UDRE ;wait until UDRE = 1

rjmp TX232

out UDR,r20 ;send data to serial

ret

RX232: sbis USR,RXC ;wait until have data in buffer

rjmp RX232

in r20,UDR ;read data from buffer

rcall TX232

ret

CSEG:

HEXTBL: .db 0x30,0X31 ;table for convert hex to ascii

.db 0X32,0X33

.db 0X34,0X35

.db 0X36,0X37

.db 0X38,0X39

.db 0X41,0X42

.db 0X43,0X44

.db 0X45,0X46

;* A P P L I C A T I O N N O T E F O R T H E A V R F A M I L Y

;* Number : ET-AVR V1/V2

;* File Name :"ADC3.asm"

;* Title :READ ADC chanel 3 to RS232

;* Date /3/42

;* Version

;* Support telephone 1120-1 (ETT)

;* Support fax (ETT)

;* Support www :www.etteam.com,www.ett.co.th

;* Target MCU :AT90S8535/AT90LS8535

.include "8535def.inc"

.org $000

rjmp RESET ;Reset Handle

.org $00E ;interrupt vector for ADC

rjmp ATOD

;* Test/Example Program

.def temp = r19

RESET: ldi temp,low(RAMEND)

out SPL,temp ;init Stack Pointer Low

ldi temp,high(RAMEND)

out SPL+1,temp ;init Stack Pointer High

sei ;clear golbal interrupt

cbi UCR,RXCIE ;clesr rx interrupt

cbi UCR,TXCIE ;clesr tx interrupt

cbi UCR,UDRIE ;clesr data empty interrupt

cbi UCR,CHR9 ;send 8 data

ldi r17,51

out UBRR,r17 ;baud 9600 at 8MHz Xtal

sbi UCR,TXEN ;set pin tx as serial TX

ldi r17,0x00 ;set porta as Hi impledance

out DDRA,r17

out PORTA,r17

ldi r17,0x02 ;set chanl 3 ADC

out ADMUX,r17

ldi r17,0b00011000 ;set sampling rate

out ADCSR,r17

sbi ADCSR,ADEN ;enable ADC

adcloop1: sbi ADCSR,ADSC ;start conversion

rjmp adcloop1

;* program for interrupt service routine ADC *

ATOD: in r21,ADCL ;read low byte

in r22,ADCH ;read high byte

mov r23,r21

andi r22,0x03 ;detect 3 bit low of ADCH

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r22

ldi r22,0

adc r31,r22

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

swap r21

andi r21,0x0F ;detect 4 bit high of ADCL

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r21

ldi r21,0

adc r31,r21

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

andi r23,0x0F ;detect 4 bit low of ADCL

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r23

ldi r23,0

adc r31,r23

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

ldi r20,0x0A ;send 0AH to rs232

rcall TX232

ldi r20,0x0D ;send 0DH to rs232

rcall TX232

reti

TX232: sbis USR,UDRE ;wait until UDRE = 1

rjmp TX232

out UDR,r20 ;send data to serial

ret

RX232: sbis USR,RXC ;wait until have data in buffer

rjmp RX232

in r20,UDR ;read data from buffer

rcall TX232

ret

CSEG:

HEXTBL: .db 0x30,0X31 ;table for convert hex to ascii

.db 0X32,0X33

.db 0X34,0X35

.db 0X36,0X37

.db 0X38,0X39

.db 0X41,0X42

.db 0X43,0X44

.db 0X45,0X46

<TBODY>

;* A P P L I C A T I O N N O T E F O R T H E A V R F A M I L Y

;* Number : ET-AVR V1/V2

;* File Name :"ADC8.asm"

;* Title :READ ADC chanel 8 to RS232

;* Date /3/42

;* Version

;* Support telephone 1120-1 (ETT)

;* Support fax (ETT)

;* Support www :www.etteam.com,www.ett.co.th

;* Target MCU :AT90S8535/AT90LS8535

.include "8535def.inc"

.org $000

rjmp RESET ;Reset Handle

.org $00E ;interrupt vector for ADC

rjmp ATOD

;* Test/Example Program

.def temp = r19

RESET: ldi temp,low(RAMEND)

out SPL,temp ;init Stack Pointer Low

ldi temp,high(RAMEND)

out SPL+1,temp ;init Stack Pointer High

sei ;clear golbal interrupt

cbi UCR,RXCIE ;clesr rx interrupt

cbi UCR,TXCIE ;clesr tx interrupt

cbi UCR,UDRIE ;clesr data empty interrupt

cbi UCR,CHR9 ;send 8 data

ldi r17,51

out UBRR,r17 ;baud 9600 at 8MHz Xtal

sbi UCR,TXEN ;set pin tx as serial TX

ldi r17,0x00 ;set porta as Hi impledance

out DDRA,r17

out PORTA,r17

ldi r17,0x07 ;set chanl 8 ADC

out ADMUX,r17

ldi r17,0b00011000 ;set sampling rate

out ADCSR,r17

sbi ADCSR,ADEN ;enable ADC

adcloop1: sbi ADCSR,ADSC ;start conversion

rjmp adcloop1

;* program for interrupt service routine ADC *

ATOD: in r21,ADCL ;read low byte

in r22,ADCH ;read high byte

mov r23,r21

andi r22,0x03 ;detect 3 bit low of ADCH

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r22

ldi r22,0

adc r31,r22

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

swap r21

andi r21,0x0F ;detect 4 bit high of ADCL

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r21

ldi r21,0

adc r31,r21

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

andi r23,0x0F ;detect 4 bit low of ADCL

ldi ZH,high(HEXTBL*2) ;get high of pointer

ldi ZL,low(HEXTBL*2) ;get low of pointer

add r30,r23

ldi r23,0

adc r31,r23

lpm ;get data from program memory

mov r20,r0 ;put data to rs232

rcall TX232

ldi r20,0x0A ;send 0AH to rs232

rcall TX232

ldi r20,0x0D ;send 0DH to rs232

rcall TX232

reti

TX232: sbis USR,UDRE ;wait until UDRE = 1

rjmp TX232

out UDR,r20 ;send data to serial

ret

RX232: sbis USR,RXC ;wait until have data in buffer

rjmp RX232

in r20,UDR ;read data from buffer

rcall TX232

ret

CSEG:

HEXTBL: .db 0x30,0X31 ;table for convert hex to ascii

.db 0X32,0X33

.db 0X34,0X35

.db 0X36,0X37

.db 0X38,0X39

.db 0X41,0X42

.db 0X43,0X44

.db 0X45,0X46

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