how to send data to Microcontroller???

atmega8515 usart asm

how can i send data to ATmega8515 using Hyperterminal , i have connected the microcontroller to a MAX232 and the pc with the max232 using a serial RS232 cable
i've connected them as the graph in the attachmnt , and i have programmed the microcontroller with this program before conneting it with max232 and hyperteminal

the program :

;***************************************************************************
;* File Name :uart.asm
;* Title :UART based RS232 communication
;* Target MCU :AT90S8515
;*
;* DESCRIPTION
;* Test the UART based RS232 communication
;***************************************************************************

;***** Directives
.device atmega8515
.nolist
.include "m8515def.inc"
.list

.def temp = r16


;***** Interrupt vector table

rjmp RESET ; Reset handle
reti ; External Interrupt0 handle
reti ; External Interrupt1 handle
reti ; T/C1 Capture Event Interrupt handle
reti ; T/C1 CompareA Interrupt handle
reti ; T/C1 CompareB Interrupt handle
reti ; T/C1 Overflow Interrupt handle
reti ; T/C0 Overflow Interrupt handle
reti ; SPI Transfer Complete Interrupt handle
reti ; UART Rx Complete Interrupt handle
reti ; UART Data Register Empty Interrupt handle
reti ; UART Tx Complete Interrupt handle
reti ; Analog Comparator Interrupt handle



;***** Subroutines

uart_init:
sbi UCSRB, RXEN ; Rx Enable
LDI R18,$80
OUT UCSRC,R18
LDI R18,$86
OUT UCSRC,R18
LDI R18,$06
OUT UCSRC,R18
ldi temp, 51 ; Baudrate 9600 @ 8MHz Clock
out UBRRl, temp
ldi r18, $00
out UBRRH, R18
ret

getc:


IN TEMP, UDR
OUT PORTA, TEMP
ret

;***** Main


RESET:
ldi temp, LOW(RAMEND)
out SPL, temp ; Initialize SPL
ldi temp, HIGH(RAMEND)
out SPH, temp ; Initialize SPH

rcall uart_init ; Initialize UART


loop:sbis UCSRA, RXC ; Wait for character
rjmp loop
rcall getc ; Read character from RS232


rjmp loop ; Repeat endless






is this correct ???
ive send data and theres no response !

save data to atmega8515

Use C language, can save you a lot from troubles. Btw, give us also your real schematic.

atmega8515 8515def.inc

Here you are a file for sending data to AT90S8515, although the chip is defferent, I think it could help. Here is the code in BOLD.
--------------------------------------------------------------------------

.include "8515def.inc"
.def temp = r16
.org $000
rjmp start
.org $009
rjmp receiving

start:
cli
ldi temp,$5f
out spl,temp
ldi temp,$02
out sph,temp
ldi temp,$90
out ucr,temp
ldi temp,$40
out usr,temp
ldi temp,$33
out ubrr,temp
in temp,udr
ldi temp,$ff
out ddrc,temp
ldi temp,$ff
out portc,temp
sei

main_loop:
rjmp main_loop

receiving:
in temp,udr
com temp
out portc,temp
reti

---------------------------------------------------------------

sending data from microcontroller

glenjoy said:

Use C language, can save you a lot from troubles. Btw, give us also your real schematic.

Click to expand...

i dont know how to progam the microcontroller using C language , as i have mentioned that i want to program it using MEGAPRG program using its parallel port programmer.
i want to send a code from the microcontroller a message to appear on the hyperterminal (like HELLO)

THANKS

Added after 3 minutes:

seadolphine2000 said:

Here you are a file for sending data to AT90S8515, although the chip is defferent, I think it could help. Here is the code in BOLD.
--------------------------------------------------------------------------

.include "8515def.inc"
.def temp = r16
.org $000
rjmp start
.org $009
rjmp receiving

start:
cli
ldi temp,$5f
out spl,temp
ldi temp,$02
out sph,temp
ldi temp,$90
out ucr,temp
ldi temp,$40
out usr,temp
ldi temp,$33
out ubrr,temp
in temp,udr
ldi temp,$ff
out ddrc,temp
ldi temp,$ff
out portc,temp
sei

main_loop:
rjmp main_loop

receiving:
in temp,udr
com temp
out portc,temp
reti

---------------------------------------------------------------

Click to expand...

Thanks dear , but this is a very short program , can u post here a full program for ATmega8515 to receive a message from it on the hyperterminal

thanks

microcontroller data include

Try this and if it works, you can then develop it.

give data to microcontroller

It's excellent code................