hello
with this code i get printed : "t3333333...."
you think the X register gets polluted by the delay fonction ?
Regards
Le 26.09.2014 04:11, Ben Shi a écrit :
> I am not sure how your function _lcdwritechar works, but I guess you might
> need such kind of code,
>
> .area DATA
>
> _varOne:
>
> .ds 1
>
> _lcdchar:
>
> .ds 1
>
> _pointer:
>
> .ds 1
>
> .....
>
> ldw x, #_string_0
>
> ldw _pointer, x
>
> main_loop:
>
> LDW X, #0d50
>
> CALL delay_m
>
> CALL ledon
>
> LDW X, #0d50
>
> CALL delay_m
>
> CALL ledoff
>
> ldw x, [_pointer.w]
>
> ldw _lcdchar, x
>
> call _lcdwritechar
>
> inc _pointer
>
> JP main_loop
>
> ....
>
> .area CODE
>
> _string_0:
>
> .ascii "toto"
>
> .db 0x00
>
> First, the variable _pointer is initialized to point to _string_0; second, in
> each iteration of the main loop, the content pointed by _pointer is moved to
> _lcdchar; third, _pointer increases each time.
>
> 在2014年09月25 23时32分，"remi"<r...@remi.lu>写道：
>
>> Hello
>>
>> I have spent a few years with MChip, I switched to stm8 recently.
>>
>> One of the reasons is pointer handeling (pic16 and 18) very limited ...
>>
>> and now, I am almost learning two things in the same time, STM8 and sdasm .
>>
>> Can some one direct me a little on how pointers are beeing
>>
>> used in sdasstm8 ?
>>
>> in this snipet, i am trying to go trhu a string and print it ...
>>
>> no luck so far, only the "t" is printed .
>>
>> I have already went thru sdccman.pdf ... but it mostly talk about its C and
>> inline assembly ,
>>
>> and stm8 axemples elsewhere are for other assemblers ... :)
>>
>> my goal , is to write 100% assembly code .
>>
>> Best regards
>>
>> .area DATA
>> _varOne:
>> .ds 1
>> _lcdchar:
>> .ds 1
>>
>> .....
>>
>> main_loop:
>>
>> LDW X, #0d50
>> CALL delay_m
>> CALL ledon
>>
>> LDW X, #0d50
>> CALL delay_m
>> CALL ledoff
>>
>> mov _lcdchar,string_0
>> call _lcdwritechar
>> inc [string_0]
>>
>> JP main_loop
>>
>> ....
>>
>> .area CODE
>> string_0:
>> .ascii "toto"
>> .db 0x00
>>
>> .area INITIALIZER
>> .area CABS (ABS)
>
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