inserting assembly code in c language code

hi,

ASM and ENDASM directives indicate the beginning of a block of source text to merge into the .SRC file.

In your case: if you need with delay or long delay and you wish to write it with assembler then either create separate file with assembler code (.a51) or do it like this:

void my_delay()
{
#pragma asm

DELAY:
MOV R4,#4

DEL:
MOV R2,#00F3H
DJNZ R2,$
DJNZ R4,DEL
#pragma endasm
}

void main(void)
{
serial_init();
P2=0X33;
#pragma asm

DELAY:
MOV R4,#4
DEL:

MOV R2,#00F3H
DJNZ R2,$
DJNZ R4,DEL
RET            ; <- here is the error
; because it breaks C function and returns to not defined address
; due main() is root function which is not called from anywhere.

hi,

ASM and ENDASM directives indicate the beginning of a block of source text to merge into the .SRC file.

In your case: if you need with delay or long delay and you wish to write it with assembler then either create separate file with assembler code (.a51) or do it like this:

void my_delay()
{
#pragma asm

DELAY:
MOV R4,#4

DEL:
MOV R2,#00F3H
DJNZ R2,$
DJNZ R4,DEL
#pragma endasm
}

void main(void)
{
serial_init();
P2=0X33;
#pragma asm

DELAY:
MOV R4,#4
DEL:

MOV R2,#00F3H
DJNZ R2,$
DJNZ R4,DEL
RET            ; <- here is the error
; because it breaks C function and returns to not defined address
; due main() is root function which is not called from anywhere.

Thanks for reply but i followed your adivce but it did'nt work. actually i want to introduce assembly code in my c program because i want to insert a calculated delay in my program. so please any body kindly either tell me the way to do it in c or tell me the way to include assembly lines in my c code.
Bye

tell me the way to do it in c or tell me the way to include assembly lines in my c code.
Neither
Create a separate .a51 module and call the assembly code from your C

Erik