Re: [avr-gcc-list] secureAVR processors from Atmel working with avr-gcc

[E. Weddington]

Per Arnold Blåsmo wrote:

> Hi All!
>
> I just wants to share some information about using the avr-gcc and 
> avr-libc on the secureAVR chips from Atmel.
> In a project I am working on we decided to us Atmel secure chip 
> AT90SC3232CS instead of an ordinary Atmel chip.
> As most of you knows, info about the chips are under NDA. Therefor I 
> can not give any information about the chips them self.
> But, I can share info about that I have made it possible to compile a 
> program using avr-gcc and avr-libc and run it successfully on 
> AT90SC3232CS. It should work for other secureAVR chips also. I will do 
> it for the AT90SC144144CT in the near future.
> I translated the header file and modified avr-libc, avr-gcc and 
> avr-binutils to accept the new processor. The patches I made was only 
> the one that is suggested on avr-libc's home page for adding another 
> processor.
> The reason for doing this is that in my company we run all servers and 
> workstations on Linux. Our working environment is Linux. Since Atmel 
> only supports the IAR compiler on these chips and IAR only works on 
> MS-windows, I had a problem. I did not want to convert to MS-windows 
> so I had to try modyfing the avr-gcc toolchain.
> So far I have only compiled a simple program, but it worked. I am now 
> aiming for some more heavy stuff :-)

This is great!

> I edit my program using Eclipse.
> Compile it using avr-gcc and avr-libc.
> Convert the compiled .elf file to extended .coff for debugging
> I am using the Voyager emulator system from Atmel to do debugging of 
> my code.
> Since I do not have the spec. of the communication protocol with the 
> Voyager I have to use AVRStudio (on a windows PC :-( to debug.
> (I read somewhere that AVRstudio 4.10 can read .elf files, but have 
> not tested that yet)
Correct, but only ELF files that contain DWARF2 debugging info. So 
you'll have to rebuild your toolset to contain that configure option.
> Atmel supplies an windows-dll file for communication with the Voyager, 
> but I do not know any way to use a windows-dll in a Linux program. 
> Maybe usage of wine and winelib might do it? Perhaps make a Linux 
> program as a connection between simul-avr and Voyager?

You'll have to contact Atmel about this. This is the first I've heard 
about the Voyager emulation system from Atmel.
> If someone has be able to tun AVRstudio under wine or otherwise on 
> Linux, I would like to know how ;-)
I think I heard that it's possible, but I don't know how. Some other 
Linux people would have to comment on this.
Eric