Hello I've just successfully lit a LED with a atmega88 using GDC.
(AVR is a 8bit micro controller with 16bits pointers)

I had to change GDC to accept a zero critsize and implemented
these stubs for volatile operations on the memmory mapped IO.

extern (C) void _d_criticalenter() {}
extern (C) void _d_criticalexit() {}

The toolchain is using newlib for now.
My next step is to try making it with the avr-libc, and then get the IRQs working with the prologue and epilogue generated by it.

Regards, Marcelo

On 21 September 2013 19:34, Marcelo <mpolitzer.c@gmail.com> wrote:

> Hello I've just successfully lit a LED with a atmega88 using GDC. (AVR is a 8bit micro controller with 16bits pointers)
>
> I had to change GDC to accept a zero critsize and implemented these stubs for volatile operations on the memmory mapped IO.
>
> extern (C) void _d_criticalenter() {}
> extern (C) void _d_criticalexit() {}
>
> The toolchain is using newlib for now.
> My next step is to try making it with the avr-libc, and then get the IRQs
> working with the prologue and epilogue generated by it.
>
> Regards, Marcelo
>

[Like]

On 21 September 2013 10:34, Marcelo <mpolitzer.c@gmail.com> wrote:
> Hello I've just successfully lit a LED with a atmega88 using GDC. (AVR is a 8bit micro controller with 16bits pointers)
>
> I had to change GDC to accept a zero critsize and implemented these stubs for volatile operations on the memmory mapped IO.
>
> extern (C) void _d_criticalenter() {}
> extern (C) void _d_criticalexit() {}
>
> The toolchain is using newlib for now.
> My next step is to try making it with the avr-libc, and then get the IRQs
> working with the prologue and epilogue generated by it.
>
> Regards, Marcelo

Awesome.  Do let me know how you get on.  I expect to see links and patches. =)

-- 
Iain Buclaw

*(p < e ? p++ : p) = (c & 0x0f) + '0';

On Saturday, 21 September 2013 at 09:34:26 UTC, Marcelo wrote:
> Hello I've just successfully lit a LED with a atmega88 using GDC.
> (AVR is a 8bit micro controller with 16bits pointers)
>
> I had to change GDC to accept a zero critsize and implemented
> these stubs for volatile operations on the memmory mapped IO.
>
> extern (C) void _d_criticalenter() {}
> extern (C) void _d_criticalexit() {}

Hey, me too I need that! Mind to share?

21-Sep-2013 13:34, Marcelo пишет:
> Hello I've just successfully lit a LED with a atmega88 using GDC.
> (AVR is a 8bit micro controller with 16bits pointers)
>
> I had to change GDC to accept a zero critsize and implemented
> these stubs for volatile operations on the memmory mapped IO.
>
> extern (C) void _d_criticalenter() {}
> extern (C) void _d_criticalexit() {}
>
> The toolchain is using newlib for now.
> My next step is to try making it with the avr-libc, and then get the
> IRQs working with the prologue and epilogue generated by it.
>
> Regards, Marcelo

Another +1. Would be awesome to see this as a git repo and/or some howto. After all I used to teach folks basics on MCUs with precisely these chips (and then there are *duinos sold everywhere).

-- 
Dmitry Olshansky

On Saturday, 21 September 2013 at 20:00:27 UTC, Dmitry Olshansky wrote:

*Just a bump for the OP to see it.*