Re: [Paparazzi-devel] ARM Cortex-M4

[Piotr Esden-Tempski]

Ahh, ok good to know. I thought that you may have found a way of using the 
stlink or some other way of programming it using SWD.

One programmer that I really love for stm32 is the Black Magic Probe 
http://www.blacksphere.co.nz/main/blackmagic it sadly does not support the f2 
and f4 chips yet. But as far as I know Gareth is working on it. It skips the 
openocd and you connect using gdb directly to the programmer. It is incredibly 
fast and throws segfaults if you drop into an exception that I never got this 
functionality working in openocd, so BMP saved me a lot of time.

I have a Versallon somewhere I may give it a go.

I also found https://github.com/whitequark/stlink and I am about to try it. 
Sadly it only works on linux, it would be nice if it worked on Mac OS X too. ^^

Thanks for the info.

Cheers Esden
 
On Oct 14, 2011, at 1:45 AM, Hector Garcia de Marina wrote:

> Hi Piotr,
> 
> I am using the Olimex's JTAG + openocd. I had to wire out some pins to the 
> programmer.
> 
> I have never used SWD protocol, would you recommend me a programmer 
> compatible with openocd to use SWD in STM32? I already checked out 
> http://www.versaloon.com/ , but at this moment I am happy with the JTAG from 
> Olimex, but I am looking for moving to SWD. 
> 
> Cheers,
> Héctor
> 
> On Fri, Oct 14, 2011 at 10:29 AM, Piotr Esden-Tempski <address@hidden> wrote:
> It is great to hear that SAT works for it. I did not get around to try it 
> yet. (got the board just yesterday)
> 
> What are you using to flash the chip?
> 
> Cheers Esden
> 
> On Oct 14, 2011, at 1:12 AM, Hector Garcia de Marina wrote:
> 
> > Hello Piotr,
> >
> > already I am using g++ 4.6.1 (built with summon-arm-toolchain script, 
> > https://github.com/esden/summon-arm-toolchain). Employing FreeRTOS and 
> > Eigen for matrices.
> >
> > I agree with you, inspecting the asm code for my IIR filter, I found that 
> > currently the compiler is not so "smart", actually sometimes it does not 
> > use the MAC instructions (DSP). I guess it is a matter of time that 
> > "cortex-m4" option will use better this kind of instructions. On the other 
> > hand, all float operation units uses correctly the new hardware 
> > instructions.
> >
> > Héctor.
> >
> > On Fri, Oct 14, 2011 at 10:03 AM, Piotr Esden-Tempski <address@hidden> 
> > wrote:
> > Hi,
> >
> > On Oct 14, 2011, at 12:34 AM, Prof. Dr.-Ing. Heinrich Warmers wrote:
> >
> > > Hi all,
> > > i found a first prototype pcb with the new ARM Cortex-M4.
> > > http://www.watterott.com/de/Boards-/-Kits/ARM/Cortex-M4
> > > This processor has a FPU,  168MHz clock, 1Mbyte flash eprom and 198kyte 
> > > ram.
> > > The price is 14 euro.
> > > I think this processor allow DGPS and IMU fusion and may bee a candidate 
> > > for the future  autopilot hardware.
> > I have this board on my desk. You can get them for free from ST if you are 
> > in the US. As I am working on lisa/m v1.1 l added forward compatibility to 
> > this chip.
> >
> > The problem I see here is that the toolchains are in very early stages in 
> > supporting this new core, so it will take a while until they are stable 
> > enough to be used on production systems. But I am looking forward to that.
> >
> > Cheers Esden
> > _______________________________________________
> > Paparazzi-devel mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
> >
> >
> >
> > --
> > Héctor
> >
> >
> > _______________________________________________
> > Paparazzi-devel mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
> 
> 
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> 
> -- 
> Héctor
> 
> 
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