LeafLabs Garden

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1. 

   mbolivar
   LeafLabs

   gbulmer -

   There is an STM32F migration guide at ST Micro

   I hadn't seen that; thanks very much for posting. Should be super useful.

   Posted 4 years ago #
2. 

   davideq
   Member

   Not sure why the sample link doesn't show up for some its on the "Quick view" tab in the Key Features" section midway down the page, the link is on the right.

   Posted 4 years ago #
3. 

   gbulmer
   Moderator

   davidq -

   Not sure why the sample link doesn't show up for some its on the "Quick view" tab in the Key Features" section midway down the page, the link is on the right.

   Is it still there for you?
   http://www.st.com/internet/evalboard/product/252419.jsp

   Likely USA only :-(

   Posted 4 years ago #
4. 

   davideq
   Member

   Yes it is. Sorry its not showing up for you.

   Posted 4 years ago #
5. 

   gbulmer
   Moderator

   The thing I find most frustrating is ST Micro are headquartered in Europe, ARM in the UK, but the freebies go to the USA.

   Posted 4 years ago #
6. 

   ThomasB
   Member

   Maybe some kind of development aid ;)

   Posted 4 years ago #
7. 

   gbulmer
   Moderator

   Maybe some kind of development aid ;)

   LOL. Brilliant! hehe. Good one :-)

   With a pun as good as that, I'd hoped I could claim you for the Brits, but I see probably not :-)

   Posted 4 years ago #
8. 

   crenn
   Moderator

   I can 'almost' confirm it's US only, got a friend to check out whether he could see it and he could.

   Posted 4 years ago #
9. 

   x893
   Member

   Are anybody give a F4Dioscovery.
   Make a simple test for(int i = 0; i < 10000; i++) and say time for this

   Posted 4 years ago #
10. 

    davideq
    Member

    Just got my free sample today. The two I have on order from Mouser have not shipped yet.

    Once I get up to speed I will try the for loop thing if I get a chance.

    Posted 4 years ago #
11. 

    ThomasB
    Member

    Got my my F4 board today (from farnell),
    I think my Eclipse/GNU/OpenOcd will not work with ST Link V2,
    so now IAR will have a chance :)

    Posted 4 years ago #
12. 

    gbulmer
    Moderator

    Got mine from Farnell a few days ago.
    I am going to one of these seminars:
    https://www.silica.com/events/seminar/silica/view/stmicroelectronics-cortex-m4-seminar.html
    in just over a week.

    My plan is to get stuff set up on my Mac, ahead of time, and check with them if I have problems. I have a link somewhere to a set of instructions which might work. I'll post if I get anywhere.

    Posted 4 years ago #
13. 

    crenn
    Moderator

    I'm also acquiring a STM32F4DSICOVERY board through a friend and will be looking at helping to port libmaple to it as the STM32F4 could be the new base of several of my projects.

    Posted 4 years ago #
14. 

    davideq
    Member

    *****
    "Are anybody give a F4Dioscovery
    Make a simple test for(int i = 0; i < 10000; i++) and say time for this."

    Ok I just got the compiler and debugger to work. Man my C is super rusty.
    I did the test for you by hacking the gpio example and timing with my oscilloscope. They set up the clock to 168 Mhz, I am not yet comfit able with all the setup steps needed. I commented out most of their code and timed on one of the LEDs (PD12).

    It took 0.000592 seconds or (0.592 milli seconds.
    While I was at it I wanted to try the floating point so I did the sam thing with float instead of int and it took
    0.000776 seconds (0.776 mili seconds) but I think that's not the best it could do because the compiler said something about converting to double.

    That work out to about 10 clock cycles for the int loop per pass and 13 for the float version.

    I hope LeafLabs looks at this chip or maybe the 64 pin version for a board, it would be great. I hate the learning curve on this board so far.

    Posted 4 years ago #
15. 

    davideq
    Member

    counting to 20,000 took twice as long so I think I did it about right.

    Posted 4 years ago #

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