Hello: Circuit Cellar has an ad this month for a Luminary Micro Circuit Cellar Design Contest for the Stellaris Cortex-M3 chips. It is mainly of interest, because there is a $49 US eval board with an lm3s811 chip on it which contains a USB -JTAG interface which will work with Kiel/IAR and CodeSourcery. Luminary Micro states that in addition to being an eval board for this particular chip, there is a 20 pin JTAG output connector, and that the onboard Cortex chip can be bypassed, and that the eval board will function as a JTAG debugger/programmer for external Cortex micros! Check out the ad here..... http://www.luminarymicro.com/designstellaris2006
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#1171795
Looks like a nice dev board they have made for that competition. Lets hope that the mainline GCC supports Coretex M3 soon, and after that WinARM, GNU ARM and YAGARTO too.
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#1171796
Fordp wrote: > Looks like a nice dev board they have made for that competition. > > Lets hope that the mainline GCC supports Coretex M3 soon, and after that > WinARM, GNU ARM and YAGARTO too. You might take a look at this link: http://www.luminarymicro.com/support/training.html There is a "GCC Quickstart training module" which shows a GDB demo in command line using Code Sourcery's GCC that supports Cortex M3 http://www.codesourcery.com/gnu_toolchains/arm/ I ordered the Luminary Eval board, but Mouser doesn't yet have any to ship. They said "very soon" jc
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#1171797
Fordp wrote: > Looks like a nice dev board they have made for that competition. > > Lets hope that the mainline GCC supports Coretex M3 soon, and after that > WinARM, GNU ARM and YAGARTO too. It seems that the "mainline/trunk" gcc source-code in the CVS does not yet include options/code for the ARMv7-architecture (like i.e. Cortex M3 CPUs). As far is I can see support is currently just available in the "CSL"-branch maintained by Codesourcery which is the codebase for the Codesourcery "arm-none-eabi"-distribution (of cause) and seems to be the codebase for the gcc-binaries in Rowley's Crossworks too (not sure - I don't have Crossworks). Bintuils 2.17 (and the binutils created from a CVS-checkout as in WinARM 6/06) seem to support ARMv7/Cortex M3 already. I have found some pathes to add support in the gcc-Mailing-List provided by someone working for Codesourcery but like Fordp I hope the next official gcc-relase will include the support since I try to avoid patching the sources if possible. Esp. since the Codesourcery distribution can "co-exist" with WinARM (and maybe GNUARM or Yagarto). Maybe the "mainline" gcc 4.1.1 (as in WinARM) can support Cortex M3 already somehow when using the ARMv6-architecture option together with -mthumb. But I'm still not sure about the stack-aligment needed for proper exception-handling. Feedback from someone who could test this on hardware or with a ARMv7-simulator is welcome.
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