LeafLabs Garden

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1. 

   mbolivar
   LeafLabs

   adam,

   we'd love the extra RAM too. our hardware efforts are dedicated to Mini and Oak right now, but we will definitely revisit this issue in the future.

   Posted 5 years ago #
2. 

   Adam
   Member

   mbolivar,

   Ok, if I need the RAM I will go the way that was suggested earlier - buy a Maple, desolder the current STM32, and solder in one of the high-density devices.

   What about Maple Native? How far away is that? Will that have a high density device? What about Oak?

   Also - what about the Maple Mini? I do not see it in the maple github repository... as that has fewer components, it might be possible for me to make a few of those from scratch using the high-density devices.

   Posted 5 years ago #
3. 

   gbulmer
   Moderator

   I belive Maple mini is a 48 pin part.

   There were no High-Density STM32F's in 48 pin the last time I looked (that was before the iDiots at ST broke the web site though).

   Posted 5 years ago #
4. 

   Adam
   Member

   gbulmer,

   STM32F103RET6 has 64KB RAM, 512MB flash, and comes in the same LQFP64 package as the STM32RBT103RBT6:

   RBT6
   http://octopart.com/stm32f103rbt6-stmicroelectronics-6988878

   RET6
   http://octopart.com/stm32f103ret6-stmicroelectronics-8119628

   At least that is what the data sheets seem to say...

   I have never soldered fine-pitch leads like this but I guess it is time to try. I will see how far I can get with the 20KB of RAM in the current Maple though...

   Posted 5 years ago #
5. 

   gbulmer
   Moderator

   Adam - I was responding to

   Also - what about the Maple Mini? I do not see it in the maple github repository... as that has fewer components, it might be possible for me to make a few of those from scratch using the high-density devices.

   I repeat,

   ... Maple mini is a 48 pin part.

   There were no High-Density STM32F's in 48 pin ...

   Okay?

   Clearly, there are high density STM32F parts in other packages, but that was not what you were writing about.

   Posted 5 years ago #
6. 

   Adam
   Member

   gbulmer,

   Ooops, right you are. Sorry about that.

   Posted 5 years ago #
7. 

   okie
   Administrator

   Maple Mini EAGLE files are now on github:

   https://github.com/leaflabs/maple/tree/master/maplemini

   Posted 5 years ago #
8. 

   Adam
   Member

   Thank you okie!

   Hmmm, maybe I will look at making a Maple Mini HD with one of the 64-pin STM32s. The part-count is lower than the Maple, so it seems less daunting. :-)

   It looks like a 4-layer board, is that right? TOP, GND, SUPPLY, and BOTTOM seem to be the layers.

   Posted 5 years ago #
9. 

   okie
   Administrator

   That's right; Maple Mini has four copper layers.

   Posted 5 years ago #
10. 

    gbulmer
    Moderator

    okie - are you continuing with Eagle, rather than use KiCAD?

    Posted 5 years ago #
11. 

    x893
    Member

    I buy stm32 discovery at 10$ and use now with maple board (swd mode). Works fine. Also i add right header between D0 and extended header (near BUT key) with jtag signals for comfort usage of debugger. More helpful debug connection with installed shield on top.

    Posted 5 years ago #
12. 

    gbulmer
    Moderator

    x893 - would you post some details of how that STM32 Discovery is wired up, and the software you are using?
    Is it the STM32VLDISCOVERY (the STM32F100?)

    Posted 5 years ago #
13. 

    x893
    Member

    yes, STM32VLDISCOVERY
    st-link make on stm32f103c8t6 and stm32F100 as development cpu (not used for debug). I check with Keil ARM, IAR ARM, TrueSTUDIO tools and works notmal. Connect via 4 lines (gnd, swd,swclk, reset).

    Posted 5 years ago #
14. 

    gbulmer
    Moderator

    x8893 - does Openocd work using your STM32VLDISCOVERY as a JYAG/SW interface and Maple?

    Posted 5 years ago #
15. 

    x893
    Member

    Can't say anything about linux but i see ST-LINK_gdbserver.exe so not a problem with Eclipse IDE via GDB. I never use OpenOCD so can't say about it.

    Posted 5 years ago #

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