Re: [avrdude-dev] stk500 and firmware 1.14

[Theodore A. Roth]

On Thu, 20 Feb 2003, Brian Dean wrote:

:) On Wed, Feb 19, 2003 at 10:07:33PM -0800, Theodore A. Roth wrote:
:)
:) > This should probably be added to the config file of avrdude for
:) > parts which don't have serial ISP functionality. Look at the
:) > attached Devices.h (from Atmel appnote AVR061 avr061.zip file) and
:) > you can see which devices this is (serMP = FALSE).
:) >
:) > Another config item might be whether the device has a Full hi-v
:) > parallel support or not. Some devices (8-pins ones I think) can't
:) > use hi-v parallel programming but can use hi-v serial
:) > programming. This would be buf[4] in avrdude, I believe.
:)
:) What about this something like this in the config file for a part:
:)
:)      ...
:)      serial   = yes | no;
:)      parallel = yes | no | nohiv;
:)      ...
:)
:) The result of setting these would be to set some single bit flags that
:) could be queried within stk500_initialize() in order to pass the right
:) values to the stk500.

I think that is more complicated than it needs to be. If a device
doesn't support serial programming, then set parallel = yes, otherwise
default to serial.

:)      parallel = yes | no | nohiv;

This doesn't make sense. hiv is not an option when parallel
programming since you _must_ take reset to 12V in order for the device
to switch into parallel programming mode.

:)
:) Is it the case that _all_ devices support serial so maybe including
:) that would be redundent.

Some of the older parts (e.g. at90s8534, I believe) don't allow serial
programming. If you want to support all devices, it's not reduntant.

Ted