Tutorial AVR

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Programmer and Target 89s51

Simple Mikrokontroller 89s51 Trainer

Standart
Mikrokontroller 89s51 Trainer

Super Mikrokontroller Trainer 89S52

Dot matrix Trainer
ATMEGA8

Programmer
ISP USB

Interfacing microcontroller MCS51 with Dot Matrix Display

Listing Program Assembly MCS51

RST bit P2.0
SHcp bit P2.1
STcp bit P2.2
DataDS bit P2.3
Row equ P0
;
mov P0,#11111111b
mov dptr,#text1
call _reset
start:
clr DataDS
call control
mov R1,#42
mov DPTR,#text1
loop:
setb DataDS
clr A
MOVC A,@A+DPTR
CPL A
mov P0,A
call control
call delay
mov Row,#11111111b
inc DPTR
djnz R1,loop
sjmp start
;
_reset:
setb RST
clr RST
setb RST
ret
;
control:
clr SHcp
setb SHcp
clr STcp
setb STcp
ret
;
delay: mov R0,#10
delay1: mov R2,#10
djnz R2,$
djnz R0,delay1
ret
;
Text1:
db 07Fh,40h,40h,40h,40h,80h ; L
db 07Ch,012h,011h,012h,07Ch,080h ; A
db 07Fh,049h,049h,049h,036h,080h ; B
db 000h,030h,030h,000h,000h,000h ; .
db 03Fh,040h,040h,040h,03Fh,080h ; U
db 03Eh,041h,041h,041h,022h,080h ; C
end

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