On 10/20/2011 2:39 AM, jana1972@centrum.cz wrote:
>
> Shall I start with assembly language or C language or different?
> What would you suggest.
> Are there more tutorials in assembly language or in C?
> Thanks
> L.
>

The one reason I would suggest learning assembly first is to get proper=20
chip support. What I mean by this is that in the PIC line of chips there=20
is a lot of variety. Choices are great but that also comes with the=20
downside that the software tools have to support that variety. The=20
problem with C tools on the pic is that you have to depend on the people=20
creating the compiler and hope they have taken the time to look at your=20
specific chip and implement all of its features, often that doesn't=20
happen. When you encounter a feature on a chip that your favorite=20
compiler doesn't support, for whatever reason , you are left with the=20
decision of changing compilers or changing chips. If you know assembly=20
you can still continue to use a chip in your current compiler by writing=20
,usually fairly short, assembly routines in the C code.

Assembly also helps because sometimes setting registers on the pic is=20
easier done with assembly than with the provided libraries.

For example :
__asm__ volatile(=93disi #0x3FFF=94); // disable temporarily all interrupts

It can be done in C but that done in assembly is just quicker.
Good luck
Mark



--=20
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