GCC Compiler support for ATtiny10

[Rodney McCray]

Is there C compiler support for the ATtiny10 in AVR studio v4.17's GCC
compiler.  I cannot find header nor io.h files for it?

Best Regards
Rodney




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[Joerg Wunsch]

"Rodney McCray" <res1zgde@...> wrote:

> Is there C compiler support for the ATtiny10 in AVR studio v4.17's
> GCC compiler.

There's probably not even assembler support for it.  This device is
much unlike any other AVR (assuming you mean the "new" ATtiny10,
rather than the historical one), in that it only offers half of the
register file.

For just 1 KiB of flash ROM (or even only 512 B for its ATtiny5
derivative), it's probably best to resort to assembly language anyway.
For such a small instruction memory, every word counts.

--
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)


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[Weddington, Eric]

 

> -----Original Message-----
> From:
> avr-gcc-list-bounces+eric.weddington=atmel.com@...
> [mailto:avr-gcc-list-bounces+eric.weddington=atmel.com@nongnu.
> org] On Behalf Of Rodney McCray
> Sent: Friday, October 09, 2009 2:55 PM
> To: avr-gcc-list@...
> Subject: [avr-gcc-list] GCC Compiler support for ATtiny10
>
> Is there C compiler support for the ATtiny10 in AVR studio v4.17's GCC
> compiler.  I cannot find header nor io.h files for it?
>

Hi Rodney,

That is correct, ATtiny10 is not supported yet in the AVR GCC toolchain. No, I don't have a timeframe yet for its support.

And you could have just emailed me directly.

Eric Weddington


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[David Brown-4]

Weddington, Eric wrote:

>
>
>> -----Original Message----- From:
>> avr-gcc-list-bounces+eric.weddington=atmel.com@...
>> [mailto:avr-gcc-list-bounces+eric.weddington=atmel.com@nongnu. org]
>> On Behalf Of Rodney McCray Sent: Friday, October 09, 2009 2:55 PM
>> To: avr-gcc-list@... Subject: [avr-gcc-list] GCC Compiler
>> support for ATtiny10
>>
>> Is there C compiler support for the ATtiny10 in AVR studio v4.17's
>> GCC compiler.  I cannot find header nor io.h files for it?
>>
>
> Hi Rodney,
>
> That is correct, ATtiny10 is not supported yet in the AVR GCC
> toolchain. No, I don't have a timeframe yet for its support.
>
> And you could have just emailed me directly.
>
> Eric Weddington

I've just had a quick look at the datasheet for this device.  In some
ways, it should be easier for gcc than the ordinary avr's (the flash is
mapped to the data area, and there is no distinction between "high" and
"low" registers).  But I'd guess that there would have to be a number of
changes to get avr-gcc to work here.  The zero and tmp registers would
have to be changed, since registers 0 and 1 don't exist.  Perhaps the
other missing registers could be disabled by declaring dummy global
register variables?  And while having the flash in the data space is
nicer, it still means changes.

The Tiny10 is a nice device in many ways - very small and cheap.  But
its use is limited by its silly programming scheme - it requires 5V
power and 5V singles on 3 of the 4 IO pins.  If the rest of your circuit
is less than 5V, you'll spend almost as much money, and a lot more
space, on voltage protection for in-circuit programming.  Realistically,
these devices must be programmed before mounting.



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