Re: AVR tiny13 ADC0 syntax problem

On Sat, 13 Sep 2008 12:43:57 -0700 (PDT), in comp.arch.embedded linnix
<me@xxxxxxxxxxxxxxxxxx> wrote:

On Sep 13, 11:01 am, Martin Griffith <mart_in_med...@xxxxxxxx> wrote:
On Sat, 13 Sep 2008 10:24:11 -0700 (PDT), in comp.arch.embedded linnix



<m...@xxxxxxxxxxxxxxxxxx> wrote:
On Sep 13, 7:55 am, Martin Griffith <mart_in_med...@xxxxxxxx> wrote:
On Sat, 13 Sep 2008 07:47:52 -0700 (PDT), in comp.arch.embedded linnix

<m...@xxxxxxxxxxxxxxxxxx> wrote:
On Sep 13, 7:34 am, Martin Griffith <mart_in_med...@xxxxxxxx> wrote:
The ADC0 is shared with the external reset pin, and I'm utterly
confused by atmels documentation on now to change it over from rst to
ADC function.

I don't want to set the no external reset fuse

Why not? As long as you use high voltage programmer (12V to reset),
you can still reprogram it.

I'm using GCC + studio4. Been to avrfreaks, I found nothing there.

Any hints, anyone?

martin

I don't have a HV programmer (yet)

Buy or build one. We will be using the reset pin for ADC or I/O as
well. I know for sure that the core cannot block reset in software
and low voltage ISP needs it to work. So, only HV prog. can work.

I've been reading the tiny13 data*** for hours, and it keeps
mentioning DIEOE,DIEOV etc to change the port function.

That's an internal signal derived from ADC port enable and DDRB5
direction. It will not override the reset signal.


I can't see how to set them in any registers, the compiler just
fllags errors when I try and use them.

My gut feeling is that setting the reset fuse wont help one little bit

The fuses are controlling the core hardware. I believe it is the
first step for using alternate functions of pin 1.


martin
Thanks linnix, I'll disorganise a HV programmer, I just wish the whole
thing was better documented, or even documented in the first place.

Alf....?

I really would have liked to get that ADC0 up and running by dawn

Frustatredly (I'm only trying to do a 555++) yours.. etc.etc

martin
.