gbulmer
Moderator
I noticed that Yagarto is providing a Mac toolchain:
http://www.yagarto.de/#downloadmac
CodeSourcery don't do Mac.
Is anyone using (any version) of Yagarto?
It offers GCC-4.6.2
According to http://gcc.gnu.org/gcc-4.6/changes.html
4.6 supports Cortex-M4, and hence may be better for STM32F4 development.
gbulmer
Moderator
feurig - roughly how long ago did you try Yagarto, i.e. which version?
If you could tell me what you tried (briefly:-) I can try a different approach. We could coordinate a plan of attack :-)
The codesourcery gcc in the Maple IDE is 4.4.1, which was released "July 22, 2009", but Yaragto's GCC-4.6.2 was released "October 26, 2011", according to http://gcc.gnu.org/releases.html
and as I wrote above, 4.6 claims Cortex-M4 support.
It is a could when you know you have to search for "Sourcery G++ Lite 2011.03-42", which leads you to https://sourcery.mentor.com/sgpp/lite/arm/portal/release1802
This release supports a F4.
they also have a newer packages with GCC 4.6.1, but I have not used it, yet. https://sourcery.mentor.com/sgpp/lite/arm/portal/release2032
gbulmer
Moderator
I don't have a big problem with registering with Code Sourcery, but they don't provide binary builds for Mac, and don't seem to provide all of the startup and link code in the source download.
I've written to Michael Fischer, and he replied that thumb2 should be there. I await further info.
poslathian
LeafLabs
hah, yagarto was the first stm32 toolchain I ever used, 2007 or thereabouts. Well it was modified, because at the time yagarto didnt support cortex m3. We built an stm32 toolchain out of eclipse, yagarto, codesourcery, and the olimex JTAG and openocd. It was enormous, and the setup documentation was many pages.
I prefer the IDE now ;)
gbulmer
Moderator
Yagarto has a Mac build for gcc-4.6.2, released October 2011
gcc-4.6 is the first gcc which claims to support Cortex-M4
Edit: http://gcc.gnu.org/gcc-4.6/changes.html
GCC now supports the Cortex-M4 processor implementing the v7-em version of the architecture using the option -mcpu=cortex-m4.
Scheduling descriptions for the Cortex-M4, the Neon and the floating point units of the Cortex-A9 and a pipeline description for the Cortex-A5 have been added.
The current Maple IDE uses gcc-4.4.1, released July 2009
So you might prefer the IDE now, but presumably you haven't really stressed or fully explored the STM32F4?
Of course, the STM32F4 will run Cortex-M3 code - Cortex-M3 is a subset of Cortex-M4, but there are a lot of useful extra instructions for Cortex-M4 including DSP (MAC and fused MAC) and some vector (SIMD) arithmetic (not NEON).
Years ago, I used gcc to get at the old Apple Mac PowerPC AltiVec SIMD hardware, and it worked reasonably well, at first with intrinsics, later with gcc doing more work. So I'd like to experiment with STM32F4 SIMD support, and DSP. I'm hoping gcc has that type of support, without me having to do it all by hand in assembler.
Rod
Member
gbulmer,
Another tool chain. Just got the F4 discovery to blink with it so not a lot of experience yet.
This one is cool in that gdb can debug the code via the stlink/v2 over usb.
Let us know if you find something with the full M4 support.
http://cu.rious.org/make/stm32-toolchain-on-mac-os-x/
'
rod$ arm-none-eabi-gcc --version
arm-none-eabi-gcc (Linaro GCC 4.5-2011.02-0) 4.5.2
'
gbulmer
Moderator
rod - thanks for the link.
The arm-none-eabi-gdb included in LeafLabs Maple IDE distribution can debug the STM32F4 on the STM32F4Discovery via the onboard SWD STLINK/V2. It can step, set breakpoints, etc. There is no need to build or install a new tool chain to get that.
The STM32F4 is a super-set of Cortex-M3, so I've been using the GNU toolchain distributed as part of the Maple IDE with the STM32F4Discovery, and normal stuff works. I can compile the ST Micro Peripheral libraries and examples, and they work. It is the extra stuff I want :-)
I'd really like a gcc-4.6.x
I have been persuaded of a better approach to the tool chain, which I'll try to make time to try out this week.
gbulmer: So I reloaded yagarto recently and also attempted to build a toolchain using the summon arm toolchain script because I needed to run lib maple on my osx-leopard (ppc) bench machine. No luck anywhere. At the same time I also just recieved an f4 discovery. What did you wind up using.
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