Re: [Sdcc-user] DS400 geting started

[Jean-Paul <tch...@fr...>]

Hello,


Instead of
>    P5 &=3D (~0x04);
and then
>    P5 |=3D 4 ; //led off

you're better off with
P5_2 ^=3D 1;

With the XOR, you are sure that the port pin is actually toggled, while
you have to write the code for delay and toggling just once ;-)

If _i _ has to remain < 1000, it could as well be an int.
On the other hand, as you just want to spend some time...

You can avoid the last line of your batch by simply adding:
-o hello390.hex

in the parameters of your second call to sdcc (linking).



That's for sure. As to your problem, I don't know. Are you sure that the=20
code is exactly as it is written here?


Jean-Paul

[Si votre adresse est ce que je suppose, on pourrait communiquer en=20
fran=E7ais, mais il ne faut pas froisser de sensibilit=E9s.]

On Wed, 7 Apr 2004 16:02:54 -0400, jonathan dumaresq=20
<jdu...@ci...> wrote:

> hi all. I just try to toggle the led on TINIm400 board.
>
> I know the pin on the borad is P5 bit 2 so I write this code:
>
> #include <tinibios.h>
> #include <ds400rom.h>
>
> #include <stdio.h>
>
> void main (void)
>  {
>   long i;
>    printf ("\n\rHello from 390.\n\rSee you, bye jonathan...\n");
>    while(1)
>     {
>
>    P5 &=3D (~0x04);
>     for(i =3D 0 ; i < 1000; i++); // some delay
>    P5 |=3D 4 ; //led off
>     for(i =3D 0 ; i < 1000; i++); // some delay
>    }
>
>  }
>
> here the batch file that i use to compile this code:
>
> set SDCCDIR=3DD:\Projet\TINI\sdcc-2.3.0-i586-mingw32msvc\sdcc
> set SDCCINC=3D%SDCCDIR%\include
> set SDCCLIB=3D%SDCCDIR%\lib\ds400
> set PATH=3D%SDCCDIR%\bin;%PATH%
>
>
> sdcc -V -c -I %SDCCINC% -mds400 hello390.c
> sdcc -V -L %SDCCLIB% -mds400 --model-flat24 --code-loc 0x400000 -Wl-r
> hello390.rel
> packihx hello390.ihx >hello390.hex
>
> if exist hello390.hex goto ok
>
> goto done
>
> :ok
>
> echo . BUILD COMPLTE
> :done
>
> I compile it with no error.
>
> I use the ToolKit for tini set to 400 board and load the hex in bank 40=
.
> I type E
>
> and nothhing happen.
>
> I remove the code in the while(1) and I see:
>
> Hello from 390.
>
> See you, bye jonathan...
>
>
> so I wonder what was the problem. If anyone here could take a look in m=
y
> little piece of code ..
>
> regards
>
> Jonathan Dumaresq
>
>
>
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