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1. 

   librae8226
   Member

   Fedora 12 Linux 64_bit
   STM32F103RBT6 board (not maple, I find nowhere to buy it - -!)
   Jlink v7
   openocd 0.4.0

   with those tools can I download mapleboot to my board?
   tks

   Posted 5 years ago #
2. 

   leaflabsandy
   Member

   A Futurlec (ETT) development board?
   I have looked at this board to make a Maple clone but put it on the back burner.
   You probably need to make sure the Bootx pins and blue LED are the same and setup like the Maples. I would advice using STM's free flash loader (my preference only)
   Note: I believe the ETT board already has a bootloader switch, you can use, but
   you need to switch over to the Maple's config. afterwards?

   info links: http://forums.leaflabs.com/topic.php?id=32
   http://forums.leaflabs.com/topic.php?id=88#post-485

   Posted 5 years ago #
3. 

   leaflabsandy
   Member

   Leaflabs is open sourced but ...

   What if Leaflabs said they had a new carburetor for an automobile.
   You said will this carburetor fit and run on my Fiat?

   You need to do some extensive research on the mounting/design of the carb. and to
   see if it will work with on your automobile. For a better word - Hack away.

   Leaflabs is open source but there is no way for them to know your
   configuration/setup/hardware of your target board let alone whether it will
   work on your clone even though it has the same vintage ARM chip on it.

   BTW ... Shipping: LeafLabs ships domestically (and Canada) for a flat rate of $5.00,
   and internationally at cost (usually around $13).

   Posted 5 years ago #
4. 

   gbulmer
   Moderator

   librae8226 - to emphasise llandy's point.

   The Maple uses more than the two USB pins to control the USB connection with the host.
   So you'll have to ensure some similar electronics to the Maple (shown on the Maple schematic) is connected, and if you want to use different pins to control the USB connection, you'll need to go hack on the bootloader.

   Otherwise your hardware looks comparable with the stuff used by the LeafLabs folks.

   Posted 5 years ago #
5. 

   leaflabsandy
   Member

   Quote: "The Maple uses more than the two USB pins to control the USB connection with the host."

   Reply: This clone board (Futurlec/ETT) does have an enable/disable circuit for
   the USB speed but it is manually done via a jumper? (It is not micro controlled)

   Posted 5 years ago #
6. 

   gbulmer
   Moderator

   librae8226 - is the ETT/Futurlec ET-STM32F103 the board you are using?

   The ETT/Futurlec ET-STM32F103 does have the electronics to control USB signalling and enumeration from the microcontroller, it is not manually controlled. Selection of whether the electronics is connected to the microcontroller, or direct to ground is via the UMODE jumper.

   On the ET-STM32F103, the UMODE jumper connects the signalling circuit to PD2 (which is STM32F103R pin P$54), where as the Maple drives that electronics with PC12 (STM32F103R P$53). So the bootloader needs to be hacked a little, if this is the board being used. Or pin PC12 (STM32F103R P$53) could be wired to the centre pin of the UMODE jumper.

   Further, the Maple detects the presence of USB 5V. I haven't looked to see what it does, but that is another difference.

   llandy - why do you call the ET-STM32F103 a 'clone'? What is it a clone of?
   AFAIK, it is a variant of one of ETT's common designs.

   Posted 5 years ago #
7. 

   leaflabsandy
   Member

   It could be made into a Maple "clone" with some hacking. After all, both the Maple and
   the ET-STM32103 does have the exact same ARM chip. Of course, the ETT board does not have the same form factor or board layout. Having both SD and RTC onboard is very nice and the price is easy on the wallet.

   BTW ... I cannot ascertain if the board is manufactured as a two layer or multilayer
   board which would reduced the noise on the board. A two layer board would be far
   inferior than the Maple's 4 layer design. The leafblowers found out the hard way
   in their board design phases.

   Gbulmer ... for a person that is not a "hardware type", your hardware skills are
   up there with the best of them!

   Posted 5 years ago #
8. 

   gbulmer
   Moderator

   llandy - okay. I thought you meant it was a clone of some 'official' board STM32F board.

   Yes, it certainly looks like a bootloader could be built for it quite quickly.

   I also like the buffered RS232, 8 buffered-LEDs, and preset-pot (Frob-Knob) and a few user buttons.
   The IDC headers kill it for me.

   When I bought mine, via a Thai friend, the board and Postage to the UK was under £17 (GBP)

   It is double sided.
   I shone a bright light through the board, and there is far too much light showing for anything with a power and ground planes.

   llandy - very kind of you to say, but I'm not a proper 'hardware type'. I 'jumped ship' in the first year of college from Physics and Electronics to Computer Science. I also know real industrial Electronic Engineers, including ex-ASIC designers. I know my place :-)

   Posted 5 years ago #
9. 

   librae8226
   Member

   Hehe, I am not using the ETT/Futurlec ET-STM32F103, but I had a brief look at it after reading your posts.

   My board is just a self-design for fun, although it is not my designed. And my purpose is only to make it work on my graduating projects. I got to know about maple several months ago and find it very nice, therefore I decide to do so.

   We are all elec fans and have great interests in it, isn't it? Just for fun, ^_^, and I am just finding if there's a solution to develop my board via USB, such a nice stuff.

   Posted 5 years ago #

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