Looking for cross-compiling gnu toolchain for H8/500 series

Developer topics relating to software that reflashes or modifes ECU code and data

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Looking for cross-compiling gnu toolchain for H8/500 series

Postby cboles » Sat Feb 04, 2006 10:16 pm

I'm starting to write a kernel for the H8/500 which is use in some older Mitsubishi ECUs. I assumed that I could use to crosstool to build a gnu toolchain for h8500, but it looks like h8/500 support was dropped a while back and you need to buy GnuPro to get current gnu tools which support it. It seems like I should be able to dig up old enough gnu source a build a version which supports h8500, but I don't really know what issues I'll run into trying to build a cross-compiler with an older version like that. Does anyone have move experience in this area who might be able to help?

Colby
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Postby GTODesign » Tue Feb 07, 2006 12:57 pm

Not something I have direct experience of I must admit. I am however dealing with a few companies that might. I'm trying to source one of the Renesas H8/539F in-circuit programming boards/software from them so I'll ask them about your question and see what they say.
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Postby cboles » Tue Feb 07, 2006 1:26 pm

Thanks. If I can find a compiler, I should be able to write a kernel which supports 96-99 DSM vehicles that have that CPU, such as the Eclipse. I have a free assembler already, but after writing one kernel in assembly, and 4 others in C, I'd definitely prefer to keep using C...
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Postby NeverLies » Wed Feb 08, 2006 12:48 am

GTODesign wrote:Not something I have direct experience of I must admit. I am however dealing with a few companies that might. I'm trying to source one of the Renesas H8/539F in-circuit programming boards/software from them so I'll ask them about your question and see what they say.


Do u know if this company supports others H8 ? Do they have any datasheet available ?
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Postby evoman » Sun Feb 12, 2006 11:35 pm

cboles wrote:Thanks. If I can find a compiler, I should be able to write a kernel which supports 96-99 DSM vehicles that have that CPU, such as the Eclipse. I have a free assembler already, but after writing one kernel in assembly, and 4 others in C, I'd definitely prefer to keep using C...


Hi cboles!

I can send C-compilers for H8 and SH series MCU. This is free tools taken from Hitachi's '96 Electronic Components Databook CD.
Both are pure DOS only versions.

Pass this for your requirements?
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Postby GTODesign » Mon Feb 13, 2006 9:14 am

Well I've been faced with nothing but dead ends from my searches. I've found software claiming to be H8 compilers only for them to support H8/300 only.

If you could upload your Hitachi software that would be great.
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Postby cboles » Mon Feb 13, 2006 9:22 am

Yes, please email me or post a copy of this. When you say DOS-only, I assume you mean that I can't run it in a command shell under XP? I have to look around, there must be a free DOS emulator I can use so that I don't have to boot DOS on a machine.

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Postby Freon » Mon Feb 13, 2006 9:31 am

XP has several DOS/Win98/Win2k emulation options. Just right click on the shortcut to the application. May or may not help...
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