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Need help with the STM32F4-Discovery board...

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LAN_403

Inducktion

Sat Oct 15 2011, 12:31AM

Registered Member #3637 Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068

I recently acquired this dev board from ST, and I haven't the foggiest idea where to begin with it...

I do have two goals though, and, I perfectly realize it's overkill for the job I have in mind, but I would like to make a Li-ion/NiCd battery charger with it...

I know you need C++ to program it, but other than that, this thing might as well be from Mars as far as I'm concerned.

RickR

Sat Oct 15 2011, 03:37AM

Registered Member #93 Joined: Thu Feb 09 2006, 04:11PM
Location: Houston, Texas
Posts: 64

Here's an IDE for the STM32F4: Atollic Website

I haven't used it at all for the F4, but I did compile a test program for the STM32F103RE evaluation board. They claim the free download version for the F4 version only supports C, but it seems to keep making reference in the IDE to C++.

CodeSourcery has command line-driven tools that I believe will work for the F4: CodeSourcery Site

I'm just getting started with the F4 also.

You might find this STMicroelectronics link useful also: STMicro Site Click on Design Support.

Just a bit more:Reference (choose Resources) The >1300 page reference manual can be found here.

This ought to help you get started.

Rick

Pinky's Brain

Sat Oct 15 2011, 03:55PM

Registered Member #2901 Joined: Thu Jun 03 2010, 01:25PM
Location:
Posts: 837

IMO C++ is not the language to program uCs, unless you just use the C++ compiler to have // comments ... that's fine.

A macro assembler is fine too.

Linas

Sat Nov 12 2011, 05:18PM

Registered Member #1143 Joined: Sun Nov 25 2007, 04:55PM
Location: Vilnius, Lithuania
Posts: 721

does any one tried to connect lcd to f4 board ?
i have working code for stm32f103 mcu, but still no luck adapting code for st32f407mcu.
only part witch is left is GPIO initialize function, if some one can help me with that i even could pay

(since i spend more than 20h just by doing that, and i am getting headache from all of this unsuccessful programing)

Patrick

Thu Feb 09 2012, 02:55AM

Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639

Hey! i just noticed this thread, i too am using a Discovery board from ST, the STM32L!

im using the "L" sereis but id like to do optical flow on one of the "F" chips from the MS kinnect. im still trying to figure out how to use a "SLAM" model for robot real time mapping.

how many of us are there here on the forum?

if i buy the chips alone and try to attch them to my own mainboard, does anyone know what code is needed for debug and usb connectivity? I know the need some low level code first to start working. There are two chips, the target and then the USB handler IC...

Carbon_Rod

Thu Feb 09 2012, 04:40AM

Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155

CodeSourcery is pretty much a waste of time, and a sleazy ploy to get around the GPL.
Think about the most unoptimized version of the gcc you can imagine.

The gcc is a great compiler, but almost all the board support packages and documentation will be for the over priced Codewarrior IDE/compiler, or horrid Raisonance/Cosmic compilers.

You will need a JTAG programmer if the board did not come with a USB/Serial bootloader programmed on chip. If you can get Uboot working it gets a little easier...

So you think everything is ready to go? Nope, the uC/OS RTOS for the M3 series they often bundle is unstable garbage. This company does not give a bean about other peoples time...

Patrick

Fri Feb 10 2012, 06:32PM

Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639

im trying to get a PID loop running in C on my STM32L... im finding a lot of examples, but i have no idea how good (or poor) they are.

Carbon_Rod

Sat Feb 11 2012, 08:20AM

Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155

In general your Kalman filter is a good solution:

Fuzzy logic performance is also fine for low CPU power systems:

However, it is always advisable to have set limits that override your control loop.
i.e. If the system behaves abnormally than default to a state known to be safe to people, and then the craft.

Steve Conner

Sat Feb 11 2012, 02:43PM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

Don't Keil or IAR have a free compiler that targets the STM32? I think the code size is limited, but it turns out enough for most hobby projects.

Carbon_Rod

Sat Feb 11 2012, 11:12PM

Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155

If your STM32F4DISCOVERY has the same model STM32F407VGT6 chip:

Information about the Ubuntu/linux based boot loader (or bypass using factory rom):

Full gcc cross compiler on MacOSX and Ubuntu/Linux:

Perhaps a small virtual machine for STM32 development with an update and build script would be helpful to a few people. As I find it helps to keep your cross-compiler development environments isolated and version locked to prevent random build environment problems.

cheers,

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